CN119980812A - A method and system for detecting construction leveling and compaction degree - Google Patents

Abstract

The present invention provides a method and system for detecting the degree of compaction of construction leveling, which are applied to the field of measurement data processing. The present invention detects the degree of compaction in the construction process in real time based on an electromagnetic induction sensor preset on a roller, which solves the problem that the traditional method relies on random inspection after the completion of construction and cannot adjust the construction parameters in time. By collecting electromagnetic parameters (such as conductivity, dielectric constant, and magnetic permeability) and matching them with the compaction state of the construction ground, the soil compaction condition is evaluated in real time. When insufficient compaction is found, the additional rolling times are automatically calculated, and the operating parameters of the roller are dynamically adjusted according to the compaction distribution thermal map. This process not only improves the construction accuracy and efficiency, but also avoids over-compaction or insufficient compaction, reduces rework and resource waste, provides real-time data feedback and automatic adjustment functions, realizes intelligent management of the construction process, and thus greatly improves the construction quality and resource utilization.

Description

Method and system for detecting construction flatness compactness

Technical Field

The invention relates to the field of measurement data processing, in particular to a method and a system for detecting the construction flatness and compactness.

Background

Modern compaction equipment, such as intelligent road rollers, already have certain automatic adjusting functions, and can execute construction tasks according to a preset rolling mode.

Most of the equipment still depends on experience judgment of operators, the real-time detection and automatic adjustment functions are lacked, the existing compactness detection method is mostly used for post detection, intelligent control cannot be performed in linkage with construction equipment, and accordingly construction quality is unstable.

Disclosure of Invention

The invention aims to solve the problems that most of current detection methods still depend on spot check after construction is finished, real-time compactness data cannot be obtained in the construction process, and construction parameters are difficult to adjust in time, and provides a detection method and a detection system for construction flatness compactness.

The invention adopts the following technical means for solving the technical problems:

The invention provides a method for detecting the compactness of construction flatness, which comprises the following steps:

Detecting a ground clearance between a road roller and a construction ground based on an electromagnetic induction sensor preset by the road roller;

judging whether the ground clearance is in a preset range or not;

if yes, a preset low-frequency electromagnetic signal is sent to the surface of the construction ground through the road roller, an induction electric field corresponding to the preset depth is collected according to the preset depth of the construction ground, and electromagnetic parameters of the induction electric field are analyzed, wherein the electromagnetic parameters specifically comprise conductivity, dielectric constant and magnetic conductivity;

Judging whether the electromagnetic parameters are matched with the final compaction state of the construction ground or not;

if the parameters are not matched, calculating the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters, activating a GPS preset by the road roller, generating a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjusting the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters specifically comprise rolling frequency, amplitude and running speed.

Further, before the step of transmitting the preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller, the method further includes:

identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay soil and loam soil;

judging whether the soil type is matched with a preset transmitting frequency range or not;

if so, acquiring electromagnetic environment noise of a construction site, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching a signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

Further, the step of collecting the induction electric field corresponding to the preset depth according to the preset depth of the construction ground and analyzing the electromagnetic parameters of the induction electric field further includes:

acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

judging whether the propagation data reach a preset propagation threshold value or not;

If not, identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.

Further, the step of generating a compaction distribution thermodynamic diagram of the work surface via the GPS, and dynamically adjusting the operating parameters of the compactor based on the compaction distribution thermodynamic diagram, further includes:

Acquiring topography elevation information of the construction ground based on azimuth data pre-acquired by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, elevation, speed, direction and rolling position;

judging whether the terrain elevation information detects a preset gradient error or not;

if so, dividing the construction ground into grid units with preset sizes, drawing a driving path of the road roller according to the terrain elevation information, generating a dynamic compaction evolution diagram of the road roller according to the driving path, and dynamically updating the azimuth data through the GPS.

Further, in the step of determining whether the ground clearance is within a preset range, the method further includes:

Based on the clearance change curve corresponding to the ground clearance, obtaining the rolling track of the road roller on the construction ground;

Judging whether the rolling track influences the clearance change curve or not;

if not, dynamically adjusting the rolling force of the road roller on the construction ground according to the foundation hardness of the construction ground, wherein the foundation hardness specifically comprises a soft foundation and a hard foundation.

Further, in the step of determining whether the electromagnetic parameter matches a final compaction state of the work surface, the method further includes:

identifying a final compaction state of the construction ground based on a compaction requirement preset on the construction ground, wherein the compaction requirement specifically comprises a soil type, a water content and a region compaction degree;

judging whether the final compaction state accords with a preset state or not;

if yes, activating a laser ranging sensor preset by the road roller, dynamically correcting electromagnetic signal attenuation caused by terrain gradient change, adaptively reducing the signal frequency of the low-frequency electromagnetic signal, measuring and correcting final compaction data in combination with surface conductivity.

Further, the step of detecting the ground clearance between the road roller and the construction ground based on the preset electromagnetic induction sensor of the road roller further comprises:

Based on the sensor pre-integrated with the road roller, collecting construction parameters of the road roller in the construction process, wherein the sensor specifically comprises a compactness sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, and the construction parameters specifically comprise soil compactness, contact pressure of a steel wheel on soil, soil temperature and soil moisture content;

judging whether the construction parameters meet the compaction requirements preset on the construction ground or not;

If so, dynamically adjusting the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensating the measurement error of the ground clearance according to the induction signal, wherein the ground material specifically comprises sandy soil, gravel and clay, and the induction signal specifically comprises induction signal frequency and induction signal intensity.

The invention also provides a system for detecting the construction flatness and compactness, which comprises the following steps:

The detection module is used for detecting the ground clearance between the road roller and the construction ground based on an electromagnetic induction sensor preset by the road roller;

The judging module is used for judging whether the ground clearance is in a preset range or not;

The execution module is used for sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller if the construction ground is on, collecting an induction electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyzing electromagnetic parameters of the induction electric field, wherein the electromagnetic parameters specifically comprise conductivity, dielectric constant and magnetic conductivity;

the second judging module is used for judging whether the electromagnetic parameters are matched with the final compaction state of the construction ground or not;

and the second execution module is used for calculating the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters if the two parameters are not matched, activating a GPS preset by the road roller, generating a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjusting the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters specifically comprise rolling frequency, amplitude and running speed.

Further, the method further comprises the following steps:

the identification module is used for identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay and loam;

The third judging module is used for judging whether the soil type is matched with a preset transmitting frequency range;

And the third execution module is used for acquiring electromagnetic environment noise of a construction site if the soil type is met, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching the signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

Further, the execution module further includes:

the acquisition unit is used for acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

the judging unit is used for judging whether the propagation data reach a preset propagation threshold value or not;

And the execution unit is used for identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range if not, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.

The invention provides a method and a system for detecting the construction flatness compactness, which have the following beneficial effects:

the invention detects compaction degree in the construction process in real time based on the preset electromagnetic induction sensor of the road roller, solves the problem that the traditional method cannot adjust construction parameters in time depending on sampling inspection after construction is finished, evaluates the soil compaction condition in real time by collecting electromagnetic parameters (such as conductivity, dielectric constant and magnetic conductivity) and matching with the compaction state of the construction ground, automatically calculates additional compaction times when insufficient compaction is found, dynamically adjusts the operation parameters of the road roller according to compaction distribution thermodynamic diagram, improves the construction precision and efficiency, can avoid the condition of excessive compaction or insufficient compaction, reduces reworking and resource waste, provides real-time data feedback and automatic adjustment functions, and realizes the intelligent management of the construction process, thereby greatly improving the construction quality and resource utilization rate.

Drawings

FIG. 1 is a schematic flow chart of one embodiment of a method for detecting the degree of compaction of a construction flatness of the present invention;

FIG. 2 is a block diagram illustrating an embodiment of a system for detecting degree of compaction of a construction surface according to the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present invention, as the achievement, functional features, and advantages of the present invention are further described with reference to the embodiments, with reference to the accompanying drawings.

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, a method for detecting the compactness of a construction leveling according to an embodiment of the present invention includes:

s1, detecting a ground clearance between a road roller and a construction ground based on an electromagnetic induction sensor preset by the road roller;

S2, judging whether the ground clearance is in a preset range or not;

s3, if yes, sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller, collecting an induction electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyzing electromagnetic parameters of the induction electric field, wherein the electromagnetic parameters specifically comprise conductivity, dielectric constant and magnetic conductivity;

s4, judging whether the electromagnetic parameters are matched with the final compaction state of the construction ground;

And S5, if the parameters are not matched, calculating the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters, activating a GPS preset by the road roller, generating a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjusting the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters comprise rolling frequency, amplitude and running speed.

In this embodiment, the system detects the ground clearance between the road roller and the construction ground based on the electromagnetic induction sensor preset in the road roller, and then the system judges whether the ground clearance is within a preset range to execute corresponding steps, for example, when the system judges that the ground clearance between the road roller and the construction ground is not within the preset range, the system considers that the road roller cannot uniformly contact the ground due to uneven ground and larger local height difference of the construction area, the compaction effect is affected, the system adjusts the suspension system or the compaction roller of the road roller to better fit the ground, ensures uniform compaction, increases the compaction frequency or amplitude, enhances the compaction effect, and adjusts the running speed of the road roller according to the compaction requirement of the construction area, Vibration parameters, even dynamically distributing weight to optimize compaction effect, for example, when the system judges that the ground clearance between the road roller and the construction ground is in a preset range, the system can consider that the road roller can uniformly contact the ground without affecting compaction effect, the system can send preset low-frequency electromagnetic signals to the ground surface of the construction ground through the road roller, collect induction electric fields corresponding to different depths according to preset depths of the construction ground, analyze electromagnetic parameters of the induction electric fields, wherein the electromagnetic parameters comprise specific conductivity, dielectric constant and magnetic conductivity, and the system can collect conductivity, change speed and change speed of the induction electric fields at different depths through analysis of the low-frequency electromagnetic signals and the induction electric field data, The electromagnetic parameters such as dielectric constant, magnetic permeability and the like reflect the compaction state of the construction ground from the surface layer to the deep layer, avoid the problem that the traditional method only depends on surface detection and possibly ignores insufficient compaction degree of the deep layer, ensure that the road roller is effectively contacted with the ground because the system only detects when the ground clearance is in a preset range, thereby avoiding the influence on the accuracy of data due to measurement errors or suspension, ensuring more stable and reliable transmission and feedback of electromagnetic signals, the traditional method is based on sampling detection, the method can continuously feed back in real time in the construction process, and the construction parameters such as rolling times, amplitude, speed and the like are dynamically adjusted according to the analyzed electromagnetic parameters, so that the unnecessary repeated rolling or insufficient compaction condition is reduced, the construction quality is improved, and by acquiring compaction data in real time, constructors can timely adjust the construction strategy, avoid excessive construction or reworking, reduce materials, improve the construction quality, and improve the construction quality, The system judges whether the electromagnetic parameters of the induction electric field are matched with the final compaction state of the construction ground so as to execute corresponding steps, for example, when the system judges that the electromagnetic parameters of the induction electric field can be matched with the final compaction state of the construction ground, the system can consider that the compaction degree of the construction ground meets the engineering standard, the compactness and the stability of soil meet the expected requirements without additional rolling, the system can store the electromagnetic parameters of the region into a construction database for subsequent quality inspection and construction tracing, and simultaneously marks the current region as a compacted state so as to ensure that constructors can visually know the whole compaction progress, avoid repeated rolling, automatically plan the running track of the road roller, guide the road roller to the region which does not reach the compaction standard, optimize the construction efficiency, and the system can reduce the vibration frequency according to the condition of the current construction region, For example, when the system determines that the electromagnetic parameters of the induction electric field cannot be matched with the final compaction state of the construction ground, the system considers that the compaction degree of the construction ground does not meet engineering specifications, extra rolling is possibly needed, the system calculates the extra rolling times of the road roller on the construction ground according to different electromagnetic parameters, activates a GPS (global positioning system) preset by the road roller, generates a compaction distribution thermodynamic diagram of the construction ground through the GPS, dynamically adjusts the operating parameters of the road roller based on the compaction distribution thermodynamic diagram, specifically comprises rolling frequency, amplitude and running speed, accurately judges which areas are not up to standard by analyzing the electromagnetic parameters of the induction electric field, does not need to rely on the traditional sampling detection mode, improves the comprehensiveness and accuracy of detection, calculates the extra rolling times based on the electromagnetic parameters, ensures that the rolling strength of each area meets the specifications, avoids excessive or insufficient rolling possibly caused by manual work, thereby optimizing the construction efficiency, and can guide the road roller to perform directional optimization aiming at the non-standard construction area according to the specific rolling frequency, and adjusts the rolling frequency, Amplitude and running speed, and the accurate construction is realized, and traditional construction methods may need to roll the whole area repeatedly, and the method only increases the rolling in the necessary area through thermodynamic diagram analysis, thereby reducing the fuel consumption, equipment abrasion and labor cost.

It should be noted that, the road roller is used to send a preset low-frequency electromagnetic signal to the surface of the construction ground, and according to the preset depth of the construction ground, an induction electric field corresponding to the preset depth is collected, and electromagnetic parameters of the induction electric field are analyzed, where specific examples are as follows:

The construction method is characterized in that in the construction process of a highway subgrade, the compactness of the engineering required subgrade reaches 95 percent (standard compactness) so as to ensure the service life and stability of the road, and a constructor adopts a real-time compactness evaluation system based on electromagnetic induction so as to replace the traditional sampling detection mode, realize non-contact and real-time monitoring in the compaction process, avoid reworking and improve the construction quality and efficiency;

first of all a low-frequency electromagnetic signal setting is performed,

The soil type of the construction area is gravel soil with moderate water content;

The target compactness is 95%;

The electromagnetic signal frequency is set to be 50kHz and the transmitting power is 5W;

The detection depth ranges are 5cm, 10cm and 20cm;

Then carrying out a real-time detection step in the construction process,

The method comprises the steps of low-frequency electromagnetic signal emission, namely starting an electromagnetic induction sensor on a road roller, and uniformly sending a low-frequency electromagnetic signal of 50kHz to the ground surface, wherein the signal enters the construction ground and is attenuated and scattered along with the increase of depth to form induction electric fields of different depths;

The induction electric field acquisition, wherein a plurality of sensors arranged in the system are arranged at the bottom of the road roller, the induction electric field data are acquired at the depths of 5cm, 10cm and 20cm, and electromagnetic parameters are recorded, including,

Conductivity (sigma) reflects the water content and pore structure of the soil;

dielectric constant (epsilonr) indicating the compaction of the soil, a greater dielectric constant indicating that the soil is more compact;

Permeability (mu) for detecting the effect of mineral particles or metallic substances in the soil;

and then carrying out data analysis and comparison, wherein the system compares the acquired data of the electric fields with different depths and the compactness target parameters required by the construction standard, and the result is as follows:

;

The system detection shows that the depth of 5cm and 10cm reaches the target compactness, but the dielectric constant of 20cm is lower, the conductivity is higher, and the fact that more pores exist in deep soil and the compactness is insufficient is indicated;

and finally, dynamically adjusting a construction scheme, judging that the depth of 20cm does not reach the target compactness by the system, automatically triggering a construction adjustment mechanism, and taking the following optimization measures:

Calculating additional rolling times, namely calculating according to electromagnetic data, and needing 2 times of rolling;

Adjusting parameters of the road roller:

the rolling frequency is increased by 10 percent (the vibration effect is improved, and the compaction of deep soil is promoted);

The running speed is reduced by 15 percent (the rolling time is prolonged, and the uniform stress is ensured);

The amplitude is increased by 5% (the acting force on deep soil is enhanced);

activating GPS, generating a real-time thermodynamic diagram:

the compaction condition of the construction area can be visually displayed on a thermodynamic diagram, the uncompacted area is marked with red, and the qualified area is displayed with green;

constructors can check compaction distribution conditions in real time through the display screen, so that pressure leakage or overpressure is avoided;

detecting again after construction adjustment, detecting electromagnetic parameters of an induced electric field again by a system after carrying out rolling for 2 times, and comparing, wherein the dielectric constant of the depth of 20cm is increased to 6.6, the conductivity is reduced to 0.09S/m, and the compactness reaches the standard;

In summary, in the above-mentioned example process, the system is through real-time monitoring compactness, avoid the construction to accomplish the back and just carry out the spot check, reduce the rework cost, electromagnetic induction technique has avoided traditional sampling detection to the destruction on ground simultaneously, promote detection efficiency, and be different from traditional method only to detect the top layer, this technique can evaluate the compaction condition of different degree of depth such as 5cm, 10cm, 20cm, and the system optimizes road roller parameter according to real-time data, improve construction quality and uniformity, constructor can directly look over uncompacted region, the accurate control road roller operation reduces the pressure leakage problem.

If the additional compaction times of the road roller to the construction ground are needed to be supplemented, according to the electromagnetic parameters, the additional compaction times of the road roller to the construction ground are calculated, a GPS preset by the road roller is activated, a compaction distribution thermodynamic diagram of the construction ground is generated through the GPS, and the operation parameters of the road roller are dynamically adjusted based on the compaction distribution thermodynamic diagram, wherein the specific examples are as follows:

Assuming that a runway with the length of 3,200m and the width of 60m is being built at an airport, the compactness of a foundation layer of the runway is required to be more than or equal to 97 percent so as to ensure the stability of taking off and landing of the aircraft, and the traditional sampling detection mode can acquire a result only by 2 hours, so that the construction progress is influenced, and therefore, a real-time compactness evaluation system based on electromagnetic induction is adopted;

the real-time monitoring finds out the problem, the system sends 40kHz low-frequency electromagnetic signals to the earth surface, and the compactness data is detected;

Detection result:

the compaction degree of the eastern side region (500 m long and 30m wide) is not enough (93% -94%), and the eastern side region needs to be additionally rolled for 1 time;

the compactness of the western region (length 700m, width 20 m) is lower than 92%, additional 2 times of rolling are needed, and rolling parameters are adjusted;

The GPS thermodynamic diagram shows that,

Yellow (compactness 93% -94%);

west region, red (compactness < 92%);

Then the system performs optimization adjustment, namely, the eastern side area (1 additional rolling is needed), the rolling frequency is adjusted to be 30 Hz-32 Hz, the default running speed is maintained to be 4km/h, the western side area (2 additional rolling is needed), the rolling frequency is adjusted to be 30 Hz-35 Hz, the running speed is reduced to be 4 km/h-2.5 km/h, and the amplitude is increased to be 1.2 mm-1.5 mm;

After construction adjustment, after the result is rolled for 2 times, the system detects electromagnetic parameters again, the compactness is improved to 97%, the construction requirement is met, after construction is finished, the whole thermodynamic diagram is green, the compactness is up to standard, the construction time is shortened by 20% compared with the traditional mode, and the detection cost is reduced by 30%;

in summary, in the above-mentioned example process, the system dynamically adjusts the operation parameters of the road roller by precisely controlling the rolling process, thereby improving rolling efficiency, calculating additional rolling times according to real-time data, avoiding unnecessary rolling operations, ensuring that different areas all reach standard compactness, enhancing engineering durability, and compacting distribution thermodynamic diagrams generated by GPS, so that a construction team can intuitively understand compacting conditions, precisely control rolling areas, reduce reworking and excessive rolling, improve construction efficiency, and reduce oil consumption and equipment wear.

In this embodiment, before step S3 of transmitting, by the road roller, a preset low-frequency electromagnetic signal to the surface of the construction ground, the method further includes:

S301, identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay soil and loam;

s302, judging whether the soil type is matched with a preset transmitting frequency range;

and S303, if so, acquiring electromagnetic environment noise of a construction site, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching a signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

In this embodiment, the system identifies the soil type of the construction ground, which specifically includes sandy soil, for example, when the system determines that the soil type of the construction ground cannot be matched with the preset emission frequency range, the system considers that the frequency of the current electromagnetic signal cannot effectively penetrate or correctly reflect the electromagnetic characteristics of the soil type, and the electromagnetic induction measurement data are possibly distorted to influence the accuracy of compaction evaluation, and the system adjusts the emission frequency according to the electromagnetic response characteristics of different soil types to enable the emission frequency to be more suitable for the current soil, such as sandy soil with higher permeability and lower conductivity, and is suitable for using electromagnetic signals with higher frequency (50 kHz-100 kHz) to obtain clearer induction data, wherein the moisture content of the clay is high, The system is large in conductivity, is suitable for using electromagnetic signals with lower frequency (10 kHz-30 kHz) to reduce signal attenuation, improve measurement depth, enable loam to be between the two, generally use medium frequency (30 kHz-50 kHz), ensure that the signals can penetrate deeply, maintain good resolution, and simultaneously send electromagnetic signals to construction ground again after adjusting emission frequency, collect induction electric fields with different depths to obtain accurate electromagnetic parameters conforming to the current soil type, and can influence final compaction requirements due to the change of the soil type, the system can adjust a compaction calculation model according to new electromagnetic data to optimize additional rolling times, reduce the cost of the system, and improve the quality of the soil, For example, when the system judges that the soil type of the construction ground can be matched with a preset transmitting frequency range, the system considers that the frequency of the current electromagnetic signal can effectively penetrate the soil and reflect electromagnetic characteristics, the system can collect electromagnetic environment noise of the construction site, dynamically adjust the transmitting power of the low-frequency electromagnetic signal according to different electromagnetic environment noise, adaptively switch the signal generating mode of the low-frequency electromagnetic signal according to different soil types, wherein the signal generating mode comprises sine waves, pulse waves and sweep frequency signals, the system can effectively overcome the interference of different electromagnetic environments of the construction site by dynamically adjusting the transmitting power of the electromagnetic signal, ensure that the electromagnetic signal can effectively penetrate the soil and accurately reflect the electromagnetic characteristics of the soil, avoid the attenuation or interference of the signal by adjusting the transmitting power according to different electromagnetic environment noise, improve the measuring precision, and simultaneously switch the signal generating mode (sine waves, Pulse wave and sweep frequency signal), the system can choose the most suitable signal mode to measure compaction according to the soil type and the change of electromagnetic environmental noise of the construction site, for example, sine wave is suitable for stable environment, smooth signal output can be provided, the system is suitable for obtaining accurate data under the environment with less interference, pulse wave is suitable for short-time and high-precision measurement, interference in continuous signals can be effectively avoided, the system is suitable for the region with more uniform soil type, sweep frequency signal is suitable for the condition with complex soil type or stronger environmental noise, wide-frequency-band signal can be provided, the system is helpful to penetrate different depths and obtain multi-level information, and by adjusting the transmitting power and the signal mode in real time, the system can always keep the best signal transmission quality and data acquisition capability under different construction environments, which means that the system can still provide accurate real-time compaction data even under the complex or more interference construction site, and is convenient for dynamically adjusting construction parameters such as rolling frequency, noise and the like, The speed and the running path ensure that the construction quality meets the standard, and in the construction process, the interference of electromagnetic environment noise is unavoidable, and by adjusting the transmitting power of signals according to different electromagnetic environment noise, the system can effectively reduce the interference influence, improve the stability and reliability of measurement, and can effectively avoid the error caused by the interference of external signals on the compactness evaluation, thereby improving the performance of the whole system.

In this embodiment, according to the preset depth of the construction ground, the step S3 of collecting the induced electric field corresponding to the preset depth and analyzing the electromagnetic parameters of the induced electric field further includes:

s31, acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

s32, judging whether the propagation data reach a preset propagation threshold value or not;

And S33, if not, identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.

In this embodiment, the system acquires the propagation data of the electromagnetic wave in the soil based on the receiving antenna preset by the road roller, the propagation data specifically include attenuation, reflection and phase shift parameters, and then the system judges whether the propagation data reach the preset propagation threshold value to execute corresponding steps, for example, when the system judges that the propagation data of the electromagnetic wave in the soil can reach the preset propagation threshold value, the system considers that the electromagnetic wave can effectively penetrate the soil and reflect the electromagnetic property of the soil, the propagation signal has good quality and is not interfered by excessive attenuation or reflection, and the system continuously acquires and analyzes the electromagnetic data of the deep soil through the receiving antenna, thereby obtaining high-precision soil conductivity, Parameters such as dielectric constant and magnetic conductivity are evaluated accurately at the same time, so as to judge whether the current soil meets the compaction requirement of engineering specifications, if the electromagnetic parameters indicate that the soil meets the required compaction degree, the system can confirm that the region is compacted and carry out the next work, otherwise, additional compaction can be carried out, and if the compaction degree does not meet the standards, the system dynamically adjusts the operation parameters of the road roller according to the acquired propagation data and the electromagnetic parameters, such as adjusting the compaction frequency, increasing or decreasing the compaction frequency, so as to optimize the compaction effect, adjusting the amplitude, improving the amplitude to increase the compaction force of the soil, or reducing the impact of the amplitude to the soil, adjusting the running speed, ensuring that the compaction is more uniform, The system dynamically adjusts the signal frequency of the electromagnetic wave according to different direction signal intensities, the signal frequency specifically comprises a low-frequency signal and a high-frequency signal, the system dynamically adjusts the signal frequency (low frequency or high frequency) according to the direction signal intensity in the soil depth range, thereby enhancing the penetrating power of the electromagnetic wave, for example, the low-frequency signal can penetrate deep soil better, the high-frequency signal is more suitable for shallow soil, the system can adapt to different soil conditions by adjusting the signal frequency, thereby optimizing the penetrating effect of the electromagnetic wave, meanwhile, as the change of the soil type and the soil condition can influence the propagation characteristic of the electromagnetic wave, in the region with relatively compact or poor penetrating power of the electromagnetic wave, the system can improve the penetrating power of the signal by adjusting the signal frequency, which can enable the system to self-adaptively adjust in different construction environments, improve the detecting performance of the compactness, and dynamically adjust the signal frequency (low frequency or high frequency) according to the direction signal intensity in the soil depth range, thereby enhancing the penetrating power of the electromagnetic wave, for example, the low-frequency signal can penetrate deep soil better, the high-frequency signal can be more suitable for shallow soil, the system can adapt to different soil conditions, and the penetrating power can be optimized due to the change of the soil conditions, and the change of the soil conditions can influence the propagation characteristic of the electromagnetic wave, and the system in the region with relatively compact or poor penetrating power, the system can improve the penetrating power, the system in the working condition, the condition of the condition, the system can be more adaptively adjusted in the condition, and the detecting performance of the system, and the system can be improved, and the detecting performance, and the compactness, can be improved The data loss or error caused by depth and electromagnetic interference can ensure the quality and reliability of the acquired data, so that the system can acquire more accurate soil electromagnetic parameters and provide powerful support for subsequent compaction degree evaluation.

In this embodiment, the step S5 of generating, by the GPS, a compaction distribution thermodynamic diagram of the construction ground, and dynamically adjusting an operation parameter of the road roller based on the compaction distribution thermodynamic diagram, further includes:

s51, acquiring topography elevation information of the construction ground based on azimuth data pre-acquired by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, elevation, speed, direction and rolling position;

S52, judging whether the terrain elevation information detects a preset gradient error or not;

And S53, if so, dividing the construction ground into grid units with preset sizes, drawing a driving path of the road roller according to the terrain elevation information, generating a dynamic compaction evolution diagram of the road roller according to the driving path, and dynamically updating the azimuth data through the GPS.

In this embodiment, the system acquires the topography elevation information of the construction ground based on the azimuth data collected in advance by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, elevation, speed, direction and rolling position, then the system judges whether the topography elevation information detects the preset gradient error or not to execute the corresponding steps, for example, when the system judges that the topography elevation information of the construction ground does not detect the preset gradient error, the system considers that the gradient of the current construction area accords with the design requirement, the construction ground is smoother, the risk of influencing the compaction effect due to the gradient abnormality does not exist, the system can continue to work according to the preset rolling path and parameters without additional gradient correction, thus ensuring the stable construction process, improving the construction efficiency, and simultaneously combining other parameters (such as soil type, compactness, electromagnetic parameters and the like) of the construction ground, further optimizing the operation parameters such as adjusting the rolling frequency, amplitude and running speed to ensure the optimal compaction effect, and uploading the current topography elevation information, the rolling track and the compaction data to the construction platform to form the real-time construction data record, so as to prevent the subsequent construction error from being influenced by the gradient error due to the fact that the slope of the road roller is still in the preset gradient error is detected in the ground, the system is not considered to be in the dynamic condition that the current gradient is still in the slope is detected, the current construction error is not required to be detected, the system is still in the dynamic condition is judged to be in the slope is required to be the ground, and the current slope is not is detected, the system can accurately identify concave-convex areas of the construction ground by detecting elevation information of the construction terrain, judging gradient errors, dividing the construction ground based on the grid units, enabling the system to refine compaction requirements of different areas, avoiding compaction non-uniformity caused by local elevation changes, improving construction quality, simultaneously, according to the elevation information of different grid units, dynamically adjusting travel paths of the road roller, ensuring that compaction operation covers the whole construction area, optimizing travel routes, reducing unnecessary repeated compaction, improving construction efficiency, reducing energy consumption, and dynamically adjusting rolling parameters such as rolling times, amplitude, rolling frequency and the like by means of the compaction evolution diagram, so as to meet design requirements of the construction ground, ensure that final compaction degree reaches the design standards of the construction ground, and further ensure that the compaction operation of the road roller is always improved due to the fact that the GPS dynamic update of the azimuth of the road roller is not uniform, the compaction operation is ensured to cover the whole construction area, the travel routes are optimized, unnecessary repeated rolling is reduced, the construction efficiency is improved, the energy consumption is reduced, and the rolling state of different areas is analyzed in real time by means of the compaction evolution diagram, the system is dynamically adjusted, the rolling parameters such as rolling times, the rolling frequency and the rolling frequency are dynamically adjusted, so that the design requirements of the construction ground are met, and the final compaction degree is ensured, the compaction operation is achieved, and the compaction operation is always has the accuracy is improved due to the fact that the rolling operation of the road roller is not uniform in the azimuth of the system or is changed due to the fact to the change of the rolling data of the rolling road roller.

The terrain elevation information refers to elevation or relative elevation data of each position of the construction ground, and is usually obtained by devices such as GPS, laser radar (LiDAR), unmanned plane mapping, total station, ground sensor, etc., and is used for describing relief conditions of the construction area and for evaluating terrain features such as gradients, depressions, elevations, etc.

In this embodiment, in step S2 of determining whether the ground clearance is within a preset range, the method further includes:

S21, based on a clearance change curve corresponding to the ground clearance, acquiring a rolling track of the road roller on the construction ground;

s22, judging whether the rolling track influences the clearance change curve or not;

And S23, if not, dynamically adjusting the rolling force of the road roller on the construction ground according to the foundation hardness of the construction ground, wherein the foundation hardness specifically comprises a soft foundation and a hard foundation.

In the embodiment, the system acquires rolling tracks of the road roller on the construction ground based on the clearance change curve corresponding to the ground clearance interval, and then the system judges whether the rolling tracks influence the clearance change curve or not so as to execute corresponding steps; for example, when the system judges that the rolling track of the road roller on the construction ground can influence the gap change curve, the system considers that the current rolling operation has obvious effect on the compaction state of the construction ground, the ground clearance of the construction ground is changed, the system records the gap change curve in real time, analyzes the specific effect of the rolling track on the ground, ensures that the rolling intensity is matched with the ground reaction, adjusts the rolling frequency and amplitude according to the compactness, enables the rolling track to adapt to the current soil characteristic, prevents excessive or insufficient rolling, properly adjusts the running speed, reduces the rolling frequency in the area with obvious compaction effect, increases the vibration intensity in the area with insufficient compaction, improves the construction efficiency, for example, when the system judges that the rolling track of the road roller on the construction ground can not influence the gap change curve, the system considers that the current rolling operation can not have enough effect on the compaction state of the construction ground, the system can dynamically adjust the rolling track of the construction ground according to the foundation hardness of the construction ground, the foundation hardness of the foundation of the soft foundation, the system can dynamically adjust the rolling track of the construction ground according to the soft foundation, can identify whether the current rolling is effective or not, repeated operation is required in the standard region, the sufficient effect is improved, and the necessary time is reduced for the soft rolling track is not needed when the system is required to be adjusted for the soft rolling ground, the system can increase rolling frequency or adjust rolling mode, make soil particles more closely arrange, improve foundation bearing capacity, prevent subsidence uneven, to hard foundation, the system can reduce rolling frequency or adopt different vibration modes, avoid excessively rolling and lead to the earth's surface to destroy or the material is broken, thereby prolong the life of construction ground, and through GPS location and rolling track analysis, the system can automatically regulated road roller travel route, make the rolling more even, avoid appearing not compacting or excessively compacting the region, this kind of dynamic adjustment mechanism ensures that whole construction ground reaches even compaction standard, improve engineering quality, reduce follow-up maintenance cost.

In this embodiment, in step S4 of determining whether the electromagnetic parameter matches the final compaction state of the construction ground, the method further includes:

s41, identifying a final compaction state of the construction ground based on a compaction requirement preset on the construction ground, wherein the compaction requirement specifically comprises soil type, water content and regional compaction degree;

s42, judging whether the final compaction state accords with a preset state or not;

And S43, if so, activating a laser ranging sensor preset by the road roller, dynamically correcting electromagnetic signal attenuation caused by terrain gradient change, adaptively reducing the signal frequency of the low-frequency electromagnetic signal, measuring and correcting final compaction data in combination with surface conductivity.

In this embodiment, the system identifies the final compaction state of the construction ground based on the preset compaction requirements of the construction ground, specifically including soil type, water content and area compaction, and then the system determines whether the final compaction state meets the preset state to perform the corresponding steps, for example, when the system determines that the final compaction state of the construction ground cannot meet the preset state, the system considers that the compaction degree of the construction ground cannot meet the engineering requirements, and there may be insufficient compaction or excessive compaction, the bearing capacity and stability of the foundation are affected, and the system determines whether the soil particle structure is loose or not due to the soil particle structure by comparing the soil type, water content and area compaction, The system calculates additional rolling times and optimizes rolling tracks to ensure that the rolling operation is more uniform and the soil compactness meets the design requirement, reduces rolling vibration frequency or reduces rolling times to avoid surface material damage or elastic loss if excessive compaction occurs, and suggests to spray proper amount of water to improve the compressibility of the soil to achieve the optimal compacting effect if the water content is lower, temporarily stops the construction if the water content is higher, waits for natural drainage of the soil or uses drainage equipment to accelerate treatment to avoid the reduction of construction quality if the phenomenon of 'floating slurry'; for example, when the system judges that the final compaction state of the construction ground can meet the preset state, the system can consider that the compaction degree of the construction ground meets the engineering requirement, the system can activate a laser ranging sensor preset by a road roller, dynamically correct the electromagnetic signal attenuation caused by the change of the slope of the terrain, adaptively reduce the signal frequency of a low-frequency electromagnetic signal, measure and correct final compaction data in combination with the surface conductivity, the system can dynamically adjust the transmission mode of the signal through accurate terrain data to ensure the minimization of the signal attenuation, thereby improving the accuracy of the compaction data, simultaneously adaptively reduce the frequency of the low-frequency electromagnetic signal to effectively reduce the error caused by reflection or interference of the electromagnetic wave at the place with larger slope, in addition, the measurement of the surface conductivity can be combined to evaluate the compaction condition of the soil more accurately, and the conductivity of the soil is closely related to the soil density, therefore, accurate correction can be carried out through the conductivity data, the final compaction data is ensured to be consistent with the actual ground state, and the electromagnetic signals and the ground surface conductivity data are corrected in real time, so that the accuracy of the data is improved, and the working parameters of the road roller, such as rolling frequency, The driving speed and the like ensure that the compaction degree of each area meets the requirements in the construction process, the compaction unevenness caused by the change of the terrain is avoided, the construction efficiency can be maximized, the repeated rolling time and the energy consumption are reduced, the compaction state can be timely detected and adjusted by the system, each area is ensured to reach the preset compaction standard, the quality problem caused by insufficient compaction or excessive compaction is reduced, and therefore, the stability and the durability of the ground are ensured after the construction is finished, and the later maintenance and reinforcement requirements are further reduced.

The method is characterized in that a laser ranging sensor preset by the road roller is activated, electromagnetic signal attenuation caused by terrain gradient change is dynamically corrected, the signal frequency of the low-frequency electromagnetic signal is adaptively reduced, and final compaction data are measured and corrected in combination with surface conductivity, wherein the specific examples are as follows:

Assuming that in the construction project of a mountain road, the ground of the construction section has significant gradient change; in some areas, the gradient is larger (for example, between 5 and 10 degrees), which can affect the working efficiency of the road roller and the accuracy of the low-frequency electromagnetic signals;

The system working principle and the adjusting process are that a laser ranging sensor detects gradient change, and the laser ranging sensor on the road roller monitors elevation change of the construction ground in real time; when the sensor detects that the gradient of the construction ground exceeds a preset threshold (for example, 7 degrees), the system automatically records the gradient information and sends the gradient information to the control system;

Dynamically correcting the attenuation of an electromagnetic signal, wherein the electromagnetic signal may be attenuated due to the change of a propagation path in a region with a larger gradient, for example, the propagation angle of the electromagnetic wave may be changed on a mountain road with a larger gradient, so that the intensity of the signal may be reduced, assuming that the attenuation of the signal is 20% calculated by a system in a region with a gradient of 7 DEG (for example, the signal with the original intensity of 0.5 is attenuated to 0.4), and dynamically adjusting the gain of a receiving end or increasing the transmission power of the electromagnetic wave by the system to compensate for the attenuation, so that the electromagnetic signal can be restored to the original intensity;

The system can adjust the frequency of the low-frequency signal from a default 80Hz to 50Hz to enhance the penetrating capacity of the electromagnetic wave to soil, and the frequency adjustment can help the electromagnetic signal to penetrate construction soil better, especially in areas with larger gradients, so as to avoid excessive attenuation of the signal;

the system further evaluates the compaction state of the soil through a conductivity measuring instrument after gradient adjustment and electromagnetic signal frequency adaptation by combining surface conductivity measurement, corrects compaction data, and gives a higher water content of the soil, which may result in softer soil and insufficient compaction, assuming that the soil in the area is wet clay, based on this data, corrects compaction data originally obtained from the electromagnetic signal, calculates the actual compaction of the soil, for example, the original electromagnetic induction data shows a compaction of 95%, but after combining conductivity and gradient compensation, the system gives a compaction of 92%, and gives a command suggesting an increase in the number of passes;

dynamically adjusting the road roller operating parameters and eventually dynamically adjusting the compaction operation of the road roller by feeding back the corrected data to the control system of the road roller, for example, the system may recommend increasing the compaction frequency, decreasing the running speed, or increasing the vibration amplitude to ensure that the soil reaches the desired compaction degree;

In summary, the system can accurately measure and adjust rolling operation in complex terrains through self-adaptive adjustment of gradient, signal attenuation and conductivity, successfully overcomes the influence of gradient change on electromagnetic signals, updates compaction data in real time, optimizes operation of the road roller to ensure that the construction ground meets the designed compaction standard, improves construction efficiency, ensures construction quality, avoids insufficient compaction or misjudgment caused by gradient problems, improves overall construction precision and effect of projects, and can remarkably improve accuracy and instantaneity of compaction degree detection in the construction process and avoid errors after manual sampling inspection or construction is finished and reduce potential risks of engineering.

In this embodiment, based on an electromagnetic induction sensor preset by the road roller, in step S1 of detecting a ground clearance between the road roller and a construction ground, the method further includes:

s11, based on a sensor pre-integrated by the road roller, collecting construction parameters of the road roller in a construction process, wherein the sensor specifically comprises a compactness sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, and the construction parameters specifically comprise soil compactness, contact pressure of a steel wheel on soil, soil temperature and soil moisture content;

s12, judging whether the construction parameters meet the compaction requirements preset on the construction ground;

And S13, if so, dynamically adjusting the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensating the measurement error of the ground clearance according to the induction signal, wherein the ground material specifically comprises sand, gravel and clay, and the induction signal specifically comprises induction signal frequency and induction signal intensity.

In the embodiment, the system is based on a sensor group which is integrated in advance by the road roller, wherein the sensors specifically comprise a compaction degree sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, construction parameters of the road roller in the construction process are collected, the construction parameters specifically comprise soil compaction degree, contact pressure of a steel wheel on soil, soil temperature and soil moisture content, and then the system judges whether the construction parameters meet compaction requirements preset on the construction ground or not so as to execute corresponding steps; for example, when the system determines that the construction parameters of the road roller in the construction process do not meet the preset compaction requirements of the construction ground, the system considers that the construction ground cannot meet the compaction degree of the design requirements at the current stage, the problems of insufficient compaction, excessive compaction or uneven compaction and the like possibly exist, the system increases the compaction frequency, increases the compaction times per unit area to ensure that the soil is fully compacted, if the contact pressure is not proper, the setting of the road roller can be adjusted, the contact pressure of the steel wheel can be increased or reduced to obtain the optimal compaction effect, the running speed is too high, the running speed can be automatically adjusted to ensure the compaction uniformity, meanwhile, the recommended adjustment of the construction time is performed, the compaction operation is performed in a period with moderate temperature is selected to ensure the optimal compaction effect of the soil, the system delays the construction in cold weather to avoid negative influences of the temperature on the soil moisture and the compaction process, the construction parameters are continuously monitored, the operation mode is dynamically adjusted in the process, for example, in the case of excessively wet soil, the system can help compaction by increasing the vibration amplitude of the compaction, if the contact pressure of the steel wheel is too high, for example, when the system judges that the construction parameters of the road roller in the construction process can meet the preset compaction requirements of the construction ground, the system can consider that the construction ground meets the compaction degree of the design requirements at the current stage, the system can dynamically adjust the induction signals of the electromagnetic induction sensor according to the ground materials of the construction ground, the ground materials specifically comprise sand, gravel and clay, the induction signals specifically comprise induction signal frequency and induction signal intensity, the measurement error of the ground clearance is adaptively compensated according to the induction signals, the system can adaptively compensate the measurement error of the ground clearance according to different ground materials (such as sand, gravel and clay) by dynamically adjusting the induction signal frequency and intensity of the electromagnetic induction sensor, which means that the system can accurately measure the ground clearance of the road roller and the construction ground no matter how the ground materials change, the system can monitor compaction effect more accurately by adjusting the induction signals and compensating the measurement error in real time, the compaction degree of the construction ground meeting the design requirements is ensured, the compaction quality is avoided due to the fact that the measurement error is not enough or the gravel is improved, and the overall compaction quality is not being improved, and the soil quality is not being accurately measured according to the different, and the different types of the measurement materials can be accurately measured, and the soil quality is not being different, and the soil quality is not accurately measured, and the soil is not can be accurately measured.

It should be noted that, according to the ground material of the construction ground, the induction signal of the electromagnetic induction sensor is dynamically adjusted, and according to the induction signal, the measurement error of the ground clearance is adaptively compensated, and specific examples are as follows:

Under the condition that the soil types are different in soil materials and comprise sand, clay and gravel, the measurement result of the electromagnetic induction sensor can be influenced by the soil properties, so that the system needs to dynamically adjust the frequency and the intensity of induction signals;

sand (low conductivity) soil characteristics:

The system can automatically improve the signal frequency of the electromagnetic induction sensor so as to ensure that the electromagnetic wave can effectively penetrate the soil, and can increase the strength of the signal so as to compensate the lower conductivity of the sand, the strong signal can compensate the attenuation caused by the low conductivity of the sand so as to ensure that the sensor can acquire accurate ground clearance data, and the electromagnetic induction sensor of the road roller can effectively penetrate the sand and accurately measure the ground clearance by improving the frequency and the strength of the signal so as to ensure that the rolling depth in the construction process meets the design requirement;

clay (highly conductive) soil properties:

The clay has higher conductivity, and particularly under the moist condition, the electromagnetic wave propagation can be attenuated rapidly; the clay particles are very fine and compact, so that the propagation of electromagnetic waves in the soil is greatly reflected and attenuated; because the clay has stronger conductivity, the system can automatically reduce the frequency of electromagnetic signals, so that the signals can penetrate through the clay layer better; the system can ensure that the electromagnetic signal is transmitted more stably in the clay by adjusting the frequency and the intensity, and can not cause excessive reflection or attenuation due to high conductivity, thereby ensuring accurate measurement of the ground clearance;

Gravel (loose and inhomogeneous) soil properties:

The system can automatically adjust the frequency of electromagnetic signals according to the concrete compactness and humidity conditions of the gravels, if the soil is loose, the system can select electromagnetic signals with lower frequency, thus being beneficial to enhancing the penetrating capacity of the signals, the system can dynamically adjust the signal strength according to the humidity of the soil due to the unstable conductivity of the gravels, the signal strength can be required to be increased for dry gravels, and the signal strength can be properly reduced for wet gravels so as to avoid excessive reflection of the signals, and by adjusting the frequency and the strength, the system can ensure that the electromagnetic signals in the gravels can adapt to different soil compactnesses and humidities, ensure accurate measurement of the ground clearance and avoid errors caused by soil non-uniformity;

In summary, according to the above-mentioned example, by dynamically adjusting the signal frequency and the signal strength of the electromagnetic induction sensor, the system can optimize the propagation effect of electromagnetic waves according to the characteristics of different soil materials, so as to effectively compensate measurement errors, specifically, the system adjusts signal parameters according to different physical characteristics of sand, clay and gravel, so as to ensure that the sensor can accurately measure the ground clearance, thereby not only improving the compaction precision of the road roller under different soil conditions, but also enhancing the data reliability in the construction process, and finally ensuring that the construction quality meets engineering requirements.

Referring to fig. 2, a system for detecting the compactness of a construction level according to an embodiment of the present invention includes:

The detection module 10 is used for detecting the ground clearance between the road roller and the construction ground based on an electromagnetic induction sensor preset by the road roller;

A judging module 20, configured to judge whether the ground clearance is within a preset range;

The execution module 30 is configured to send a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller if the detection result is yes, collect an induced electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyze electromagnetic parameters of the induced electric field, where the electromagnetic parameters specifically include conductivity, dielectric constant and magnetic permeability;

a second determining module 40, configured to determine whether the electromagnetic parameter matches a final compaction state of the construction surface;

And the second execution module 50 is configured to, if the parameters are not matched, calculate the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters, activate a preset GPS of the road roller, generate a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjust operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters specifically include rolling frequency, amplitude and running speed.

In the present embodiment, the detection module 10 detects the ground clearance between the road roller and the construction ground based on the electromagnetic induction sensor pre-arranged on the road roller, and the judgment module 20 judges whether the ground clearance is within the preset range to execute the corresponding steps, for example, when the system judges that the ground clearance between the road roller and the construction ground is not within the preset range, the system considers that the road roller cannot uniformly contact the ground due to uneven ground and larger local height difference of the construction area, the compaction effect is affected, the system adjusts the suspension system or the compaction roller of the road roller to better fit the ground, ensures uniform compaction, increases the compaction frequency or amplitude, enhances the compaction effect, and adjusts the running speed, the compaction speed and the compaction roller according to the compaction requirement of the construction area, Vibration parameters, even dynamically distributing weight to optimize compaction effect, for example, when the system determines that the ground clearance between the road roller and the construction ground is in a preset range, the execution module 30 can consider that the road roller can uniformly contact the ground without affecting compaction effect, the system can send preset low-frequency electromagnetic signals to the ground surface of the construction ground through the road roller, collect induction electric fields corresponding to different depths according to preset depths of the construction ground, analyze electromagnetic parameters of the induction electric fields, and the electromagnetic parameters comprise specific conductivity, dielectric constant and magnetic conductivity, and the system can collect conductivity, electromagnetic conductivity and magnetic conductivity at different depths through analysis of the low-frequency electromagnetic signals and induction electric field data, The electromagnetic parameters such as dielectric constant, magnetic permeability and the like reflect the compaction state of the construction ground from the surface layer to the deep layer, avoid the problem that the traditional method only depends on surface detection and possibly ignores insufficient compaction degree of the deep layer, ensure that the road roller is effectively contacted with the ground because the system only detects when the ground clearance is in a preset range, thereby avoiding the influence on the accuracy of data due to measurement errors or suspension, ensuring more stable and reliable transmission and feedback of electromagnetic signals, the traditional method is based on sampling detection, the method can continuously feed back in real time in the construction process, and the construction parameters such as rolling times, amplitude, speed and the like are dynamically adjusted according to the analyzed electromagnetic parameters, so that the unnecessary repeated rolling or insufficient compaction condition is reduced, the construction quality is improved, and by acquiring compaction data in real time, constructors can timely adjust the construction strategy, avoid excessive construction or reworking, reduce materials, improve the construction quality, and improve the construction quality, The second judging module 40 judges whether the electromagnetic parameters of the induction electric field are matched with the final compaction state of the construction ground to execute corresponding steps, for example, when the system judges that the electromagnetic parameters of the induction electric field can be matched with the final compaction state of the construction ground, the system considers that the compaction degree of the construction ground meets the engineering specifications, the compactness and the stability of soil meet the expected requirements without additional compaction, the system stores the electromagnetic parameters of the area into a construction database for subsequent quality inspection and construction tracing, the current area is marked as a 'compacted' state, the visual understanding of the whole compaction progress of constructors is ensured, repeated compaction is avoided, the running track of the road roller is automatically planned, the road roller is guided to a region which does not reach compaction standard, the construction efficiency is optimized, and the system can reduce the vibration frequency according to the condition of the current construction area, The compaction energy consumption is reduced, and even the vibration mode is suspended, so that the energy sources are saved and the equipment loss is reduced; for example, when the system determines that the electromagnetic parameters of the induced electric field cannot match the final compaction state of the construction ground, the second execution module 50 may consider that the compaction degree of the construction ground does not meet the engineering specifications, and may require additional compaction, the system calculates the additional compaction times of the road roller on the construction ground according to different electromagnetic parameters, activates the GPS provided in advance for the road roller, generates a compaction distribution thermodynamic diagram of the construction ground through the GPS, dynamically adjusts the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters include the compaction frequency, and the compaction time, The system can accurately judge which areas are not up to standard by analyzing electromagnetic parameters of an induction electric field, the method does not need to rely on a traditional sampling detection mode, the comprehensiveness and the accuracy of detection are improved, meanwhile, extra rolling times are calculated based on the electromagnetic parameters, the rolling strength of each area is ensured to meet the specification, excessive rolling or insufficient rolling possibly caused by manual estimation is avoided, the construction efficiency is optimized, the system can guide a road roller to conduct directional optimization on the areas which are not up to standard by generating a compaction distribution thermodynamic diagram in real time, rolling frequency, amplitude and driving speed are adjusted according to the specific conditions of the construction areas, accurate construction is realized, the traditional construction method can need to repeatedly roll the whole areas for multiple times, and the method only increases rolling in the necessary areas through thermodynamic diagram analysis, reduces repeated operation, thereby reducing fuel consumption, equipment wear and labor costs.

In this embodiment, further comprising:

the identification module is used for identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay and loam;

The third judging module is used for judging whether the soil type is matched with a preset transmitting frequency range;

And the third execution module is used for acquiring electromagnetic environment noise of a construction site if the soil type is met, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching the signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

In this embodiment, the system identifies the soil type of the construction ground, which specifically includes sandy soil, for example, when the system determines that the soil type of the construction ground cannot be matched with the preset emission frequency range, the system considers that the frequency of the current electromagnetic signal cannot effectively penetrate or correctly reflect the electromagnetic characteristics of the soil type, and the electromagnetic induction measurement data are possibly distorted to influence the accuracy of compaction evaluation, and the system adjusts the emission frequency according to the electromagnetic response characteristics of different soil types to enable the emission frequency to be more suitable for the current soil, such as sandy soil with higher permeability and lower conductivity, and is suitable for using electromagnetic signals with higher frequency (50 kHz-100 kHz) to obtain clearer induction data, wherein the moisture content of the clay is high, The system is large in conductivity, is suitable for using electromagnetic signals with lower frequency (10 kHz-30 kHz) to reduce signal attenuation, improve measurement depth, enable loam to be between the two, generally use medium frequency (30 kHz-50 kHz), ensure that the signals can penetrate deeply, maintain good resolution, and simultaneously send electromagnetic signals to construction ground again after adjusting emission frequency, collect induction electric fields with different depths to obtain accurate electromagnetic parameters conforming to the current soil type, and can influence final compaction requirements due to the change of the soil type, the system can adjust a compaction calculation model according to new electromagnetic data to optimize additional rolling times, reduce the cost of the system, and improve the quality of the soil, For example, when the system judges that the soil type of the construction ground can be matched with a preset transmitting frequency range, the system considers that the frequency of the current electromagnetic signal can effectively penetrate the soil and reflect electromagnetic characteristics, the system can collect electromagnetic environment noise of the construction site, dynamically adjust the transmitting power of the low-frequency electromagnetic signal according to different electromagnetic environment noise, adaptively switch the signal generating mode of the low-frequency electromagnetic signal according to different soil types, wherein the signal generating mode comprises sine waves, pulse waves and sweep frequency signals, the system can effectively overcome the interference of different electromagnetic environments of the construction site by dynamically adjusting the transmitting power of the electromagnetic signal, ensure that the electromagnetic signal can effectively penetrate the soil and accurately reflect the electromagnetic characteristics of the soil, avoid the attenuation or interference of the signal by adjusting the transmitting power according to different electromagnetic environment noise, improve the measuring precision, and simultaneously switch the signal generating mode (sine waves, Pulse wave and sweep frequency signal), the system can choose the most suitable signal mode to measure compaction according to the soil type and the change of electromagnetic environmental noise of the construction site, for example, sine wave is suitable for stable environment, smooth signal output can be provided, the system is suitable for obtaining accurate data under the environment with less interference, pulse wave is suitable for short-time and high-precision measurement, interference in continuous signals can be effectively avoided, the system is suitable for the region with more uniform soil type, sweep frequency signal is suitable for the condition with complex soil type or stronger environmental noise, wide-frequency-band signal can be provided, the system is helpful to penetrate different depths and obtain multi-level information, and by adjusting the transmitting power and the signal mode in real time, the system can always keep the best signal transmission quality and data acquisition capability under different construction environments, which means that the system can still provide accurate real-time compaction data even under the complex or more interference construction site, and is convenient for dynamically adjusting construction parameters such as rolling frequency, noise and the like, The speed and the running path ensure that the construction quality meets the standard, and in the construction process, the interference of electromagnetic environment noise is unavoidable, and by adjusting the transmitting power of signals according to different electromagnetic environment noise, the system can effectively reduce the interference influence, improve the stability and reliability of measurement, and can effectively avoid the error caused by the interference of external signals on the compactness evaluation, thereby improving the performance of the whole system.

In this embodiment, the execution module further includes:

the acquisition unit is used for acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

the judging unit is used for judging whether the propagation data reach a preset propagation threshold value or not;

And the execution unit is used for identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range if not, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.

In this embodiment, the system acquires the propagation data of the electromagnetic wave in the soil based on the receiving antenna preset by the road roller, the propagation data specifically include attenuation, reflection and phase shift parameters, and then the system judges whether the propagation data reach the preset propagation threshold value to execute corresponding steps, for example, when the system judges that the propagation data of the electromagnetic wave in the soil can reach the preset propagation threshold value, the system considers that the electromagnetic wave can effectively penetrate the soil and reflect the electromagnetic property of the soil, the propagation signal has good quality and is not interfered by excessive attenuation or reflection, and the system continuously acquires and analyzes the electromagnetic data of the deep soil through the receiving antenna, thereby obtaining high-precision soil conductivity, Parameters such as dielectric constant and magnetic conductivity are evaluated accurately at the same time, so as to judge whether the current soil meets the compaction requirement of engineering specifications, if the electromagnetic parameters indicate that the soil meets the required compaction degree, the system can confirm that the region is compacted and carry out the next work, otherwise, additional compaction can be carried out, and if the compaction degree does not meet the standards, the system dynamically adjusts the operation parameters of the road roller according to the acquired propagation data and the electromagnetic parameters, such as adjusting the compaction frequency, increasing or decreasing the compaction frequency, so as to optimize the compaction effect, adjusting the amplitude, improving the amplitude to increase the compaction force of the soil, or reducing the impact of the amplitude to the soil, adjusting the running speed, ensuring that the compaction is more uniform, The system dynamically adjusts the signal frequency of the electromagnetic wave according to different direction signal intensities, the signal frequency specifically comprises a low-frequency signal and a high-frequency signal, the system dynamically adjusts the signal frequency (low frequency or high frequency) according to the direction signal intensity in the soil depth range, thereby enhancing the penetrating power of the electromagnetic wave, for example, the low-frequency signal can penetrate deep soil better, the high-frequency signal is more suitable for shallow soil, the system can adapt to different soil conditions by adjusting the signal frequency, thereby optimizing the penetrating effect of the electromagnetic wave, meanwhile, as the change of the soil type and the soil condition can influence the propagation characteristic of the electromagnetic wave, in the region with relatively compact or poor penetrating power of the electromagnetic wave, the system can improve the penetrating power of the signal by adjusting the signal frequency, which can enable the system to self-adaptively adjust in different construction environments, improve the detecting performance of the compactness, and dynamically adjust the signal frequency (low frequency or high frequency) according to the direction signal intensity in the soil depth range, thereby enhancing the penetrating power of the electromagnetic wave, for example, the low-frequency signal can penetrate deep soil better, the high-frequency signal can be more suitable for shallow soil, the system can adapt to different soil conditions, and the penetrating power can be optimized due to the change of the soil conditions, and the change of the soil conditions can influence the propagation characteristic of the electromagnetic wave, and the system in the region with relatively compact or poor penetrating power, the system can improve the penetrating power, the system in the working condition, the condition of the condition, the system can be more adaptively adjusted in the condition, and the detecting performance of the system, and the system can be improved, and the detecting performance, and the compactness, can be improved The data loss or error caused by depth and electromagnetic interference can ensure the quality and reliability of the acquired data, so that the system can acquire more accurate soil electromagnetic parameters and provide powerful support for subsequent compaction degree evaluation.

In this embodiment, the second execution module further includes:

The acquisition unit is used for acquiring the topography elevation information of the construction ground based on the azimuth data pre-acquired by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, the elevation, the speed, the direction and the rolling position;

The second judging unit is used for judging whether the terrain elevation information detects a preset gradient error or not;

and the second execution unit is used for dividing the construction ground into grid units with preset sizes if the construction ground is the construction ground, drawing a driving path of the road roller according to the terrain elevation information, generating a dynamic compaction evolution diagram of the road roller according to the driving path, and dynamically updating the azimuth data through the GPS.

In this embodiment, the system acquires the topography elevation information of the construction ground based on the azimuth data collected in advance by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, elevation, speed, direction and rolling position, then the system judges whether the topography elevation information detects the preset gradient error or not to execute the corresponding steps, for example, when the system judges that the topography elevation information of the construction ground does not detect the preset gradient error, the system considers that the gradient of the current construction area accords with the design requirement, the construction ground is smoother, the risk of influencing the compaction effect due to the gradient abnormality does not exist, the system can continue to work according to the preset rolling path and parameters without additional gradient correction, thus ensuring the stable construction process, improving the construction efficiency, and simultaneously combining other parameters (such as soil type, compactness, electromagnetic parameters and the like) of the construction ground, further optimizing the operation parameters such as adjusting the rolling frequency, amplitude and running speed to ensure the optimal compaction effect, and uploading the current topography elevation information, the rolling track and the compaction data to the construction platform to form the real-time construction data record, so as to prevent the subsequent construction error from being influenced by the gradient error due to the fact that the slope of the road roller is still in the preset gradient error is detected in the ground, the system is not considered to be in the dynamic condition that the current gradient is still in the slope is detected, the current construction error is not required to be detected, the system is still in the dynamic condition is judged to be in the slope is required to be the ground, and the current slope is not is detected, the system can accurately identify concave-convex areas of the construction ground by detecting elevation information of the construction terrain, judging gradient errors, dividing the construction ground based on the grid units, enabling the system to refine compaction requirements of different areas, avoiding compaction non-uniformity caused by local elevation changes, improving construction quality, simultaneously, according to the elevation information of different grid units, dynamically adjusting travel paths of the road roller, ensuring that compaction operation covers the whole construction area, optimizing travel routes, reducing unnecessary repeated compaction, improving construction efficiency, reducing energy consumption, and dynamically adjusting rolling parameters such as rolling times, amplitude, rolling frequency and the like by means of the compaction evolution diagram, so as to meet design requirements of the construction ground, ensure that final compaction degree reaches the design standards of the construction ground, and further ensure that the compaction operation of the road roller is always improved due to the fact that the GPS dynamic update of the azimuth of the road roller is not uniform, the compaction operation is ensured to cover the whole construction area, the travel routes are optimized, unnecessary repeated rolling is reduced, the construction efficiency is improved, the energy consumption is reduced, and the rolling state of different areas is analyzed in real time by means of the compaction evolution diagram, the system is dynamically adjusted, the rolling parameters such as rolling times, the rolling frequency and the rolling frequency are dynamically adjusted, so that the design requirements of the construction ground are met, and the final compaction degree is ensured, the compaction operation is achieved, and the compaction operation is always has the accuracy is improved due to the fact that the rolling operation of the road roller is not uniform in the azimuth of the system or is changed due to the fact to the change of the rolling data of the rolling road roller.

In this embodiment, the judging module further includes:

The second acquisition unit is used for acquiring the rolling track of the road roller on the construction ground based on the clearance change curve corresponding to the ground clearance;

a third judging unit for judging whether the rolling track affects the gap change curve;

And the third execution unit is used for dynamically adjusting the rolling force of the road roller on the construction ground according to the foundation hardness of the construction ground if not, wherein the foundation hardness specifically comprises a soft foundation and a hard foundation.

In the embodiment, the system acquires rolling tracks of the road roller on the construction ground based on the clearance change curve corresponding to the ground clearance interval, and then the system judges whether the rolling tracks influence the clearance change curve or not so as to execute corresponding steps; for example, when the system judges that the rolling track of the road roller on the construction ground can influence the gap change curve, the system considers that the current rolling operation has obvious effect on the compaction state of the construction ground, the ground clearance of the construction ground is changed, the system records the gap change curve in real time, analyzes the specific effect of the rolling track on the ground, ensures that the rolling intensity is matched with the ground reaction, adjusts the rolling frequency and amplitude according to the compactness, enables the rolling track to adapt to the current soil characteristic, prevents excessive or insufficient rolling, properly adjusts the running speed, reduces the rolling frequency in the area with obvious compaction effect, increases the vibration intensity in the area with insufficient compaction, improves the construction efficiency, for example, when the system judges that the rolling track of the road roller on the construction ground can not influence the gap change curve, the system considers that the current rolling operation can not have enough effect on the compaction state of the construction ground, the system can dynamically adjust the rolling track of the construction ground according to the foundation hardness of the construction ground, the foundation hardness of the foundation of the soft foundation, the system can dynamically adjust the rolling track of the construction ground according to the soft foundation, can identify whether the current rolling is effective or not, repeated operation is required in the standard region, the sufficient effect is improved, and the necessary time is reduced for the soft rolling track is not needed when the system is required to be adjusted for the soft rolling ground, the system can increase rolling frequency or adjust rolling mode, make soil particles more closely arrange, improve foundation bearing capacity, prevent subsidence uneven, to hard foundation, the system can reduce rolling frequency or adopt different vibration modes, avoid excessively rolling and lead to the earth's surface to destroy or the material is broken, thereby prolong the life of construction ground, and through GPS location and rolling track analysis, the system can automatically regulated road roller travel route, make the rolling more even, avoid appearing not compacting or excessively compacting the region, this kind of dynamic adjustment mechanism ensures that whole construction ground reaches even compaction standard, improve engineering quality, reduce follow-up maintenance cost.

In this embodiment, the second judging module further includes:

The identifying unit is used for identifying the final compaction state of the construction ground based on the preset compaction requirement of the construction ground, wherein the compaction requirement specifically comprises soil type, water content and regional compaction degree;

A fourth judging unit, configured to judge whether the final compaction state meets a preset state;

and the fourth execution unit is used for activating a laser ranging sensor preset by the road roller if the road roller is in the road, dynamically correcting electromagnetic signal attenuation caused by terrain gradient change, adaptively reducing the signal frequency of the low-frequency electromagnetic signal, measuring and correcting final compaction data by combining surface conductivity.

In this embodiment, the system identifies the final compaction state of the construction ground based on the preset compaction requirements of the construction ground, specifically including soil type, water content and area compaction, and then the system determines whether the final compaction state meets the preset state to perform the corresponding steps, for example, when the system determines that the final compaction state of the construction ground cannot meet the preset state, the system considers that the compaction degree of the construction ground cannot meet the engineering requirements, and there may be insufficient compaction or excessive compaction, the bearing capacity and stability of the foundation are affected, and the system determines whether the soil particle structure is loose or not due to the soil particle structure by comparing the soil type, water content and area compaction, The system calculates additional rolling times and optimizes rolling tracks to ensure that the rolling operation is more uniform and the soil compactness meets the design requirement, reduces rolling vibration frequency or reduces rolling times to avoid surface material damage or elastic loss if excessive compaction occurs, and suggests to spray proper amount of water to improve the compressibility of the soil to achieve the optimal compacting effect if the water content is lower, temporarily stops the construction if the water content is higher, waits for natural drainage of the soil or uses drainage equipment to accelerate treatment to avoid the reduction of construction quality if the phenomenon of 'floating slurry'; for example, when the system judges that the final compaction state of the construction ground can meet the preset state, the system can consider that the compaction degree of the construction ground meets the engineering requirement, the system can activate a laser ranging sensor preset by a road roller, dynamically correct the electromagnetic signal attenuation caused by the change of the slope of the terrain, adaptively reduce the signal frequency of a low-frequency electromagnetic signal, measure and correct final compaction data in combination with the surface conductivity, the system can dynamically adjust the transmission mode of the signal through accurate terrain data to ensure the minimization of the signal attenuation, thereby improving the accuracy of the compaction data, simultaneously adaptively reduce the frequency of the low-frequency electromagnetic signal to effectively reduce the error caused by reflection or interference of the electromagnetic wave at the place with larger slope, in addition, the measurement of the surface conductivity can be combined to evaluate the compaction condition of the soil more accurately, and the conductivity of the soil is closely related to the soil density, therefore, accurate correction can be carried out through the conductivity data, the final compaction data is ensured to be consistent with the actual ground state, and the electromagnetic signals and the ground surface conductivity data are corrected in real time, so that the accuracy of the data is improved, and the working parameters of the road roller, such as rolling frequency, The driving speed and the like ensure that the compaction degree of each area meets the requirements in the construction process, the compaction unevenness caused by the change of the terrain is avoided, the construction efficiency can be maximized, the repeated rolling time and the energy consumption are reduced, the compaction state can be timely detected and adjusted by the system, each area is ensured to reach the preset compaction standard, the quality problem caused by insufficient compaction or excessive compaction is reduced, and therefore, the stability and the durability of the ground are ensured after the construction is finished, and the later maintenance and reinforcement requirements are further reduced.

In this embodiment, the detection module further includes:

The system comprises a collecting unit, a control unit and a control unit, wherein the collecting unit is used for collecting construction parameters of the road roller in the construction process based on a sensor pre-integrated with the road roller, the sensor specifically comprises a compactness sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, and the construction parameters specifically comprise soil compactness, contact pressure of a steel wheel on soil, soil temperature and soil moisture content;

a fifth judging unit, configured to judge whether the construction parameter meets a compaction requirement preset on the construction ground;

And the fifth execution unit is used for dynamically adjusting the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground if the construction ground is on, and adaptively compensating the measurement error of the ground clearance according to the induction signal, wherein the ground material specifically comprises sand, gravel and clay, and the induction signal specifically comprises induction signal frequency and induction signal intensity.

In the embodiment, the system is based on a sensor group which is integrated in advance by the road roller, wherein the sensors specifically comprise a compaction degree sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, construction parameters of the road roller in the construction process are collected, the construction parameters specifically comprise soil compaction degree, contact pressure of a steel wheel on soil, soil temperature and soil moisture content, and then the system judges whether the construction parameters meet compaction requirements preset on the construction ground or not so as to execute corresponding steps; for example, when the system determines that the construction parameters of the road roller in the construction process do not meet the preset compaction requirements of the construction ground, the system considers that the construction ground cannot meet the compaction degree of the design requirements at the current stage, the problems of insufficient compaction, excessive compaction or uneven compaction and the like possibly exist, the system increases the compaction frequency, increases the compaction times per unit area to ensure that the soil is fully compacted, if the contact pressure is not proper, the setting of the road roller can be adjusted, the contact pressure of the steel wheel can be increased or reduced to obtain the optimal compaction effect, the running speed is too high, the running speed can be automatically adjusted to ensure the compaction uniformity, meanwhile, the recommended adjustment of the construction time is performed, the compaction operation is performed in a period with moderate temperature is selected to ensure the optimal compaction effect of the soil, the system delays the construction in cold weather to avoid negative influences of the temperature on the soil moisture and the compaction process, the construction parameters are continuously monitored, the operation mode is dynamically adjusted in the process, for example, in the case of excessively wet soil, the system can help compaction by increasing the vibration amplitude of the compaction, if the contact pressure of the steel wheel is too high, for example, when the system judges that the construction parameters of the road roller in the construction process can meet the preset compaction requirements of the construction ground, the system can consider that the construction ground meets the compaction degree of the design requirements at the current stage, the system can dynamically adjust the induction signals of the electromagnetic induction sensor according to the ground materials of the construction ground, the ground materials specifically comprise sand, gravel and clay, the induction signals specifically comprise induction signal frequency and induction signal intensity, the measurement error of the ground clearance is adaptively compensated according to the induction signals, the system can adaptively compensate the measurement error of the ground clearance according to different ground materials (such as sand, gravel and clay) by dynamically adjusting the induction signal frequency and intensity of the electromagnetic induction sensor, which means that the system can accurately measure the ground clearance of the road roller and the construction ground no matter how the ground materials change, the system can monitor compaction effect more accurately by adjusting the induction signals and compensating the measurement error in real time, the compaction degree of the construction ground meeting the design requirements is ensured, the compaction quality is avoided due to the fact that the measurement error is not enough or the gravel is improved, and the overall compaction quality is not being improved, and the soil quality is not being accurately measured according to the different, and the different types of the measurement materials can be accurately measured, and the soil quality is not being different, and the soil quality is not accurately measured, and the soil is not can be accurately measured.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The method for detecting the construction flatness and compactness is characterized by comprising the following steps of:

Detecting a ground clearance between a road roller and a construction ground based on an electromagnetic induction sensor preset by the road roller;

judging whether the ground clearance is in a preset range or not;

if yes, a preset low-frequency electromagnetic signal is sent to the surface of the construction ground through the road roller, an induction electric field corresponding to the preset depth is collected according to the preset depth of the construction ground, and electromagnetic parameters of the induction electric field are analyzed, wherein the electromagnetic parameters specifically comprise conductivity, dielectric constant and magnetic conductivity;

Judging whether the electromagnetic parameters are matched with the final compaction state of the construction ground or not;

if the parameters are not matched, calculating the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters, activating a GPS preset by the road roller, generating a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjusting the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters specifically comprise rolling frequency, amplitude and running speed.

2. The method for detecting the compactness of a construction grade according to claim 1, further comprising, before the step of transmitting a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller:

identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay soil and loam soil;

judging whether the soil type is matched with a preset transmitting frequency range or not;

if so, acquiring electromagnetic environment noise of a construction site, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching a signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

3. The method for detecting the compactness of the construction level according to claim 1, wherein the step of collecting the induced electric field corresponding to the preset depth according to the preset depth of the construction ground and analyzing the electromagnetic parameters of the induced electric field further comprises:

acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

judging whether the propagation data reach a preset propagation threshold value or not;

If not, identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.

4. The method of claim 1, wherein the step of generating a compaction map of the work surface via the GPS, and dynamically adjusting the operating parameters of the compactor based on the compaction map, further comprises:

Acquiring topography elevation information of the construction ground based on azimuth data pre-acquired by the GPS on the road roller, wherein the azimuth data specifically comprises the current longitude and latitude, elevation, speed, direction and rolling position;

judging whether the terrain elevation information detects a preset gradient error or not;

if so, dividing the construction ground into grid units with preset sizes, drawing a driving path of the road roller according to the terrain elevation information, generating a dynamic compaction evolution diagram of the road roller according to the driving path, and dynamically updating the azimuth data through the GPS.

5. The method for detecting the compactness of the construction level according to claim 1, wherein the step of judging whether the ground clearance is within a preset range further includes:

Based on the clearance change curve corresponding to the ground clearance, obtaining the rolling track of the road roller on the construction ground;

Judging whether the rolling track influences the clearance change curve or not;

if not, dynamically adjusting the rolling force of the road roller on the construction ground according to the foundation hardness of the construction ground, wherein the foundation hardness specifically comprises a soft foundation and a hard foundation.

6. The method for detecting the degree of compaction of a construction surface according to claim 1, wherein the step of determining whether the electromagnetic parameter matches the final compaction state of the construction surface further comprises:

identifying a final compaction state of the construction ground based on a compaction requirement preset on the construction ground, wherein the compaction requirement specifically comprises a soil type, a water content and a region compaction degree;

judging whether the final compaction state accords with a preset state or not;

if yes, activating a laser ranging sensor preset by the road roller, dynamically correcting electromagnetic signal attenuation caused by terrain gradient change, adaptively reducing the signal frequency of the low-frequency electromagnetic signal, measuring and correcting final compaction data in combination with surface conductivity.

7. The method for detecting the compactness of the construction level according to claim 1, wherein the step of detecting the ground clearance between the road roller and the construction ground based on the electromagnetic induction sensor preset by the road roller further comprises:

Based on the sensor pre-integrated with the road roller, collecting construction parameters of the road roller in the construction process, wherein the sensor specifically comprises a compactness sensor, a contact pressure sensor, a moisture sensor and a vehicle-mounted temperature sensor, and the construction parameters specifically comprise soil compactness, contact pressure of a steel wheel on soil, soil temperature and soil moisture content;

judging whether the construction parameters meet the compaction requirements preset on the construction ground or not;

If so, dynamically adjusting the induction signal of the electromagnetic induction sensor according to the ground material of the construction ground, and adaptively compensating the measurement error of the ground clearance according to the induction signal, wherein the ground material specifically comprises sandy soil, gravel and clay, and the induction signal specifically comprises induction signal frequency and induction signal intensity.

8. A system for detecting the degree of compaction of a construction flatness, comprising:

The detection module is used for detecting the ground clearance between the road roller and the construction ground based on an electromagnetic induction sensor preset by the road roller;

The judging module is used for judging whether the ground clearance is in a preset range or not;

The execution module is used for sending a preset low-frequency electromagnetic signal to the surface of the construction ground through the road roller if the construction ground is on, collecting an induction electric field corresponding to the preset depth according to the preset depth of the construction ground, and analyzing electromagnetic parameters of the induction electric field, wherein the electromagnetic parameters specifically comprise conductivity, dielectric constant and magnetic conductivity;

the second judging module is used for judging whether the electromagnetic parameters are matched with the final compaction state of the construction ground or not;

and the second execution module is used for calculating the additional rolling times of the road roller on the construction ground according to the electromagnetic parameters if the two parameters are not matched, activating a GPS preset by the road roller, generating a compaction distribution thermodynamic diagram of the construction ground through the GPS, and dynamically adjusting the operation parameters of the road roller based on the compaction distribution thermodynamic diagram, wherein the operation parameters specifically comprise rolling frequency, amplitude and running speed.

9. The construction level compactness detection system of claim 8, further comprising:

the identification module is used for identifying the soil type of the construction ground, wherein the soil type specifically comprises sandy soil, clay and loam;

The third judging module is used for judging whether the soil type is matched with a preset transmitting frequency range;

And the third execution module is used for acquiring electromagnetic environment noise of a construction site if the soil type is met, dynamically adjusting the transmitting power of the low-frequency electromagnetic signal according to the electromagnetic environment noise, and adaptively switching the signal generation mode of the low-frequency electromagnetic signal according to the soil type, wherein the signal generation mode specifically comprises sine waves, pulse waves and sweep frequency signals.

10. The system for detecting degree of compaction of construction leveling of claim 8, wherein the execution module further comprises:

the acquisition unit is used for acquiring propagation data of electromagnetic waves in soil based on a receiving antenna preset by the road roller, wherein the propagation data specifically comprises attenuation, reflection and phase shift parameters;

the judging unit is used for judging whether the propagation data reach a preset propagation threshold value or not;

And the execution unit is used for identifying the direction signal intensity of the propagation data in the soil depth range according to the construction requirement preset soil depth range if not, and dynamically adjusting the signal frequency of the electromagnetic wave according to the direction signal intensity, wherein the signal frequency specifically comprises a low-frequency signal and a high-frequency signal.