CN119996935A - Personnel positioning method and system based on IoT device - Google Patents
Personnel positioning method and system based on IoT device Download PDFInfo
- Publication number
- CN119996935A CN119996935A CN202411895444.6A CN202411895444A CN119996935A CN 119996935 A CN119996935 A CN 119996935A CN 202411895444 A CN202411895444 A CN 202411895444A CN 119996935 A CN119996935 A CN 119996935A
- Authority
- CN
- China
- Prior art keywords
- wireless communication
- communication terminal
- internet
- signal
- signal intensity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
本发明适用于人员定位技术领域，尤其涉及一种基于物联设备的人员定位方法及系统，所述方法包括：构建施工现场BIM模型；建立数据连接，验证无线通讯终端的身份；记录无线通讯终端的第一信号强度，并通过无线通讯物联设备检测无线通讯终端的第二信号强度，通过施工现场BIM模型生成第一备选位置；在人员移动后，记录无线通讯终端的信号发射强度为第三信号强度，检测无线通讯终端的第四信号强度，对第一备选位置进行筛选，得到人员位置信息。本发明通过构建BIM模型，并在现场设置无线通讯终端，能够在设置极少量的无线通讯终端的情况下，对人员进行定位，能够具体确定人员所在的位置，大大提高了定位的精度，保证了施工安全性。
The present invention is applicable to the field of personnel positioning technology, and in particular, relates to a personnel positioning method and system based on an Internet of Things device, the method comprising: constructing a construction site BIM model; establishing a data connection, verifying the identity of a wireless communication terminal; recording a first signal strength of the wireless communication terminal, and detecting a second signal strength of the wireless communication terminal through a wireless communication Internet of Things device, and generating a first candidate position through a construction site BIM model; after the personnel move, recording the signal transmission strength of the wireless communication terminal as a third signal strength, detecting a fourth signal strength of the wireless communication terminal, screening the first candidate position, and obtaining personnel location information. By constructing a BIM model and setting up wireless communication terminals on site, the present invention can locate personnel in the case of setting up a very small number of wireless communication terminals, and can specifically determine the location of the personnel, greatly improving the accuracy of positioning and ensuring construction safety.
Description
Technical Field
The invention belongs to the technical field of personnel positioning, and particularly relates to a personnel positioning method and system based on internet of things equipment.
Background
The indoor manual positioning technology is to realize accurate identification and tracking of the position of a person or an object by utilizing various sensors, wireless communication technologies and algorithms in an indoor environment where the outdoor positioning technologies such as a GPS and the like cannot work effectively. The technology transmits signals through infrastructure (such as Wi-Fi access points, bluetooth beacons, RFID readers and the like) deployed indoors, and the receiving equipment calculates position information according to received signal strength, flight time and other parameters. Indoor manual positioning is widely applied to various fields such as market navigation, museum navigation, hospital patient monitoring, factory asset management and the like, and provides convenient service experience and efficient management means for users. Along with the development of technology, the precision and reliability of the intelligent building system are continuously improved, and the intelligent building system becomes an important component for intelligent building and intelligent city construction.
In the current building construction process, when constructors work indoors, accurate positioning of the constructors is difficult to achieve by adopting traditional GPS positioning equipment, and accurate positions of the constructors indoors cannot be known.
Disclosure of Invention
The invention aims to provide a personnel positioning method based on internet of things equipment, which aims to solve the problems that when constructors work indoors, the traditional GPS positioning equipment is difficult to realize accurate positioning of the personnel and the accurate position of the constructors in the room cannot be known.
The invention is realized in such a way that a personnel positioning method based on the Internet of things equipment comprises the following steps:
building a construction site BIM model, setting a wireless communication terminal at a construction site, and equipping staff with wireless communication internet of things equipment, wherein the construction site BIM model comprises a wall structure model, and each layer of building is provided with at least one wireless communication terminal;
Establishing data connection with a wireless communication terminal through wireless communication Internet of things equipment, and verifying the identity of the wireless communication terminal;
Recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication internet of things equipment, and generating a first alternative position through a construction site BIM model;
After the personnel move, recording the signal emission intensity of the wireless communication terminal as the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the personnel position information.
Preferably, the step of establishing data connection with the wireless communication terminal through the wireless communication internet of things device and verifying the identity of the wireless communication terminal includes:
broadcasting identity information through the wireless communication terminal, and establishing data connection with the wireless communication terminal by the wireless communication Internet of things equipment according to the broadcasting identity information;
transmitting a communication terminal verification code to the wireless communication Internet of things equipment through the wireless communication terminal;
The wireless communication internet of things device queries the background based on the communication terminal verification code, and if the communication terminal verification code is matched with the corresponding wireless communication terminal, the authentication is judged to pass.
Preferably, the step of recording the first signal strength of the wireless communication terminal, detecting the second signal strength of the wireless communication terminal through the wireless communication internet of things device, and generating the first alternative position through the construction site BIM model specifically includes:
Acquiring the transmitted signal intensity of the wireless communication terminal through data transmission to obtain first signal intensity, and detecting the second signal intensity of the wireless communication terminal through wireless communication Internet of things equipment;
positioning the position of the wireless communication terminal in a construction site BIM model, and taking the position of the wireless communication terminal as a circle center to obtain a plurality of positioning selection areas;
And determining signal loss parameters based on the structure of the wall body, constructing a signal loss equation, and determining points, which accord with the signal propagation position relationship, on each positioning selection area based on the signal loss equation to obtain a first alternative position.
Preferably, after the person moves, recording that the signal emission intensity of the wireless communication terminal is the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the person position information, including:
recording the moving direction and the offset of personnel through a triaxial acceleration sensor in the wireless communication internet of things equipment;
When the offset is larger than a preset value, recording the signal emission intensity of the wireless communication terminal as third signal intensity, and the signal intensity detected by the wireless communication internet of things equipment as fourth signal intensity;
and solving to obtain a plurality of second alternative positions based on the constructed signal loss model, and generating personnel position information by combining the triaxial acceleration sensor data.
Preferably, the second alternative position is screened according to the moving direction and the offset of the person, and the second alternative position meeting the offset direction and the offset is screened and used as the position of the current person.
Another object of the present invention is to provide a person positioning system based on an internet of things device, the system comprising:
The model construction module is used for constructing a construction site BIM model, a wireless communication terminal is arranged at a construction site, staff is provided with wireless communication internet of things equipment, the construction site BIM model comprises a wall structure model, and each layer of building is provided with at least one wireless communication terminal;
the identity verification module is used for establishing data connection with the wireless communication terminal through the wireless communication Internet of things equipment and verifying the identity of the wireless communication terminal;
The initial position positioning module is used for recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication internet of things equipment and generating a first alternative position through a construction site BIM model;
And the repeated positioning screening module is used for recording that the signal emission intensity of the wireless communication terminal is the third signal intensity after the personnel move, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the personnel position information.
Preferably, the identity verification module includes:
The information broadcasting unit is used for broadcasting identity information through the wireless communication terminal, and the wireless communication Internet of things equipment establishes data connection with the wireless communication terminal according to the broadcasting identity information;
The data receiving and transmitting unit is used for transmitting a communication terminal verification code to the wireless communication internet of things equipment through the wireless communication terminal;
and the verification code verification module is used for inquiring the background based on the communication terminal verification code by the wireless communication internet of things equipment, and judging that the identity verification passes if the communication terminal verification code is matched with the corresponding wireless communication terminal.
Preferably, the initial position locating module includes:
The first signal detection unit is used for acquiring the transmitting signal intensity of the wireless communication terminal through data transmission to obtain first signal intensity, and detecting the second signal intensity of the wireless communication terminal through wireless communication internet of things equipment;
The selective area dividing unit is used for positioning the position of the wireless communication terminal in the construction site BIM model, and obtaining a plurality of positioning selective areas by taking the position of the wireless communication terminal as the circle center;
The loss equation construction unit is used for determining signal loss parameters based on the structure of the wall body, constructing a signal loss equation, and determining points, which accord with the signal propagation position relation, on each positioning selection area based on the signal loss equation to obtain a first alternative position.
Preferably, the repeated positioning screening module includes:
the signal intensity adjusting unit is used for recording the moving direction and the offset of the personnel through a triaxial acceleration sensor in the wireless communication internet of things equipment;
the second signal detection unit is used for recording that the signal emission intensity of the wireless communication terminal is third signal intensity and the signal intensity detected by the wireless communication internet of things equipment is fourth signal intensity when the offset is larger than a preset value;
And the position screening unit is used for solving and obtaining a plurality of second alternative positions based on the constructed signal loss model and generating personnel position information by combining the triaxial acceleration sensor data.
Preferably, the second alternative position is screened according to the moving direction and the offset of the person, and the second alternative position meeting the offset direction and the offset is screened and used as the position of the current person.
According to the personnel positioning method based on the Internet of things equipment, the BIM model is built, and the wireless communication terminals are arranged on site, so that the personnel can be positioned under the condition that a very small number of wireless communication terminals are arranged, the position of the personnel can be determined specifically, the positioning precision is improved greatly, and the construction safety is guaranteed.
Drawings
Fig. 1 is a flowchart of a personnel positioning method based on an internet of things device according to an embodiment of the present invention;
fig. 2 is a flowchart of a step of establishing a data connection with a wireless communication terminal through a wireless communication internet of things device and verifying an identity of the wireless communication terminal according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating steps for recording a first signal strength of a wireless communication terminal, detecting a second signal strength of the wireless communication terminal by a wireless communication Internet of things device, and generating a first alternative position by a construction site BIM model according to an embodiment of the present invention;
Fig. 4 is a flowchart of a step of changing signal transmission intensity to third signal intensity by a wireless communication terminal, detecting fourth signal intensity of the wireless communication terminal, and screening a first alternative position to obtain personnel position information according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a personnel positioning system based on an internet of things device according to an embodiment of the present invention;
FIG. 6 is a block diagram of an authentication module according to an embodiment of the present invention;
FIG. 7 is a block diagram of an initial position location module according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a repeated positioning screening module according to an embodiment of the present invention;
Fig. 9 is a schematic diagram of dividing, positioning and selecting areas according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a flowchart of a person positioning method based on an internet of things device according to an embodiment of the present invention is provided, where the method includes:
S100, constructing a construction site BIM model, setting a wireless communication terminal at a construction site, wherein staff is provided with wireless communication internet of things equipment, the construction site BIM model comprises a wall structure model, and each layer of building is provided with at least one wireless communication terminal.
In this step, a construction site BIM model is built, in the existing construction process, BIM technology is gradually applied, full period monitoring can be carried out on construction projects through a three-dimensional modeling mode, specific component structures of all walls, such as brick walls, concrete walls, stone materials, light partition walls and the like, are recorded in the construction site BIM model, thickness and position information of the walls are recorded, in order to achieve positioning of personnel, personnel are provided with wireless communication Internet of things equipment, the wireless communication Internet of things equipment can be mobile equipment, such as mobile phones and the like, and can also be other equipment with wireless communication modules and mobile networks, the wireless communication terminals are equipment with wireless communication functions and are installed on a construction site, when the wireless communication terminals are installed, the wireless communication terminals are prevented from being installed on symmetrical lines of a construction plan so as to facilitate subsequent positioning, a plurality of wireless communication terminals are arranged on each layer of building, when the single-layer area of the building is large, each wireless communication terminal is provided with an independent communication terminal for identifying the unique communication terminal, and the wireless communication terminal can be arranged in the construction site according to the construction site, and the identity of the personnel can be determined according to the wireless communication terminal.
S200, establishing data connection with the wireless communication terminal through the wireless communication Internet of things equipment, and verifying the identity of the wireless communication terminal.
In this step, data connection is established between the wireless communication internet of things device and the wireless communication terminal, when the wireless communication internet of things device detects the wireless communication terminal, the wireless communication terminal broadcasts its identity information outwards, the wireless communication internet of things device verifies the identity of the wireless communication terminal, specifically, the identity of the wireless communication terminal can be determined by adopting a network verification mode, and after the verification is completed, the wireless communication internet of things device can perform joint positioning with the wireless communication terminal so as to determine the position of a person.
S300, recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication Internet of things equipment, and generating a first alternative position through a construction site BIM model.
In this step, the first signal intensity of the wireless communication terminal is recorded, the first signal intensity is the signal intensity sent by the wireless communication terminal, the wireless signal sent by the wireless communication terminal passes through the wall body and is finally captured by the wireless communication internet of things equipment, at this time, the wireless signal intensity is weakened because the wall body can block the wireless signal, the signal intensity detected by the wireless communication internet of things equipment is the second signal intensity, the absorption capacity of different materials to the wireless signal is different, namely the absorptivity of different wall bodies to the wireless signal is different, then the attenuation amount of the signal intensity is different when the wireless signal passes through different wall bodies with different thicknesses, after the first signal intensity and the second signal intensity are obtained, a construction site BIM model is called, because the position of the known wireless communication terminal can simulate the wireless signal transmission process according to the construction site BIM model, different signal attenuation coefficients are set for different wall bodies according to previous tests, in the simulation process, the signal intensity sent by the wireless communication terminal is the first signal intensity, the wireless signal is sent out to the periphery of the wireless communication terminal, the different paths are divergent outwards, therefore, the signal intensity can reach different positions in the simulation process, namely the wireless signal intensity reaches the first position, and then the position is different signal attenuation coefficients, and the position is determined according to the position of the second position.
S400, after the personnel move, recording the signal emission intensity of the wireless communication terminal as the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the personnel position information.
In this step, after the person moves, the signal emission intensity of the wireless communication terminal is recorded as the third signal intensity, and because different walls have different signal attenuation coefficients and the propagation distances are also different, the number of the first alternative positions may be multiple, in order to further improve the positioning range, the wireless communication internet of things device establishes data connection with the wireless communication terminal, the wireless communication terminal continues to emit wireless signals, and similarly, the wireless communication internet of things device detects again to obtain the fourth signal intensity, according to the calculation mode in step S300, the analog signal intensity of the wireless signals reaching each position in the current floor is determined according to the signal attenuation coefficients, all the positions of which the analog signal intensity is equal to the fourth signal intensity are second alternative positions, at this time, the moving direction of the person recorded in the triaxial acceleration sensor data and the offset are called, if the moving distance from north to south is M, the first alternative positions and the second alternative positions meeting the requirements are screened, the second alternative positions meeting the requirements are selected from the first alternative positions and the second alternative positions, and the second alternative positions meeting the current conditions are the second alternative positions, if the second alternative positions meeting the requirements from north to south, and the second alternative positions are moved from north to south, and the second alternative positions are generated, and then the new positions are generated, and the new movement information is generated if the second alternative positions are generated.
As shown in fig. 2, as a preferred embodiment of the present invention, the step of establishing a data connection with a wireless communication terminal through a wireless communication internet of things device, and verifying the identity of the wireless communication terminal includes:
s201, broadcasting identity information through the wireless communication terminal, and establishing data connection with the wireless communication terminal by the wireless communication Internet of things equipment according to the broadcasting identity information.
In this step, identity information is broadcasted through the wireless communication terminal, so that the wireless communication networking equipment can identify the wireless communication terminal, when signals sent by a plurality of wireless communication terminals exist simultaneously, data connection is established with the wireless communication networking equipment with the highest signal strength, and specifically, the floor where the altitude sensor positioning personnel on the wireless communication networking equipment are located can also be matched.
S202, a communication terminal verification code is sent to the wireless communication Internet of things equipment through the wireless communication terminal.
S203, the wireless communication Internet of things equipment queries the background based on the communication terminal verification code, and if the communication terminal verification code is matched with the corresponding wireless communication terminal, the authentication is judged to pass.
In the step, the communication terminal verification code is sent to the wireless communication internet of things device through the wireless communication terminal, the communication terminal verification code and the wireless communication terminal are bound one by one and are automatically updated according to a preset time interval, and the wireless communication internet of things device sends the communication terminal verification code to the background for inquiry, so that whether the current wireless communication terminal is a trusted device is determined, and if the current wireless communication terminal is trusted, data transmission can be continued with the current wireless communication terminal.
As shown in fig. 3, as a preferred embodiment of the present invention, the steps of recording the first signal strength of the wireless communication terminal, detecting the second signal strength of the wireless communication terminal through the wireless communication internet of things device, and generating the first alternative location through the job site BIM model specifically include:
s301, acquiring the transmitted signal intensity of the wireless communication terminal through data transmission, obtaining the first signal intensity, and detecting the second signal intensity of the wireless communication terminal through the wireless communication Internet of things equipment.
In this step, the transmitted signal intensity of the wireless communication terminal is obtained through data transmission, so as to obtain the first signal intensity, the signal intensity of all the wireless communication terminals before personnel positioning is the first signal intensity, and the signal intensity of the wireless signal sent by the wireless communication terminal is only the second signal intensity when the wireless signal reaches the wireless communication internet of things equipment after the wireless signal is blocked by the wall body.
S302, positioning the position of the wireless communication terminal in the BIM model of the construction site, and obtaining a plurality of positioning selection areas by taking the position of the wireless communication terminal as the circle center.
In the step, the position of the wireless communication terminal is positioned in the construction site BIM model, then a circular area is drawn in the construction site BIM model by taking the position of the wireless communication terminal as the center of a circle, the radius of the circular area is the maximum signal coverage range of the wireless communication terminal, then gridding treatment is carried out on the circular area, the circular area is divided into a plurality of grid units, the size of the grid units is set according to the requirement, the larger the diameter of the circular area is, the higher the required precision is, the smaller the size of the grid units is, and otherwise, the larger the size of the grid units is, and each grid unit is a positioning and selecting area.
S303, determining signal loss parameters based on the structure of the wall body, constructing a signal loss equation, and determining points, which accord with the signal propagation position relation, on each positioning selection area based on the signal loss equation to obtain a first alternative position.
In the step, signal loss parameters are determined based on the structure of the wall, signal loss parameters of the wireless signal passing through various walls are determined by performing signal tests in the early stage of positioning, one positioning selection area is selected each time, the center of the positioning selection area is taken as a positioning point, various wall thicknesses S i passing through between the positioning point and a wireless communication terminal and the non-blocking distance d i are counted, and a signal strength loss model of the wireless signal in the air is as follows:
Where L 0 is the path loss (in dB) at a reference distance d 0, n is the path loss index (typically between 2 and 4), d is the propagation distance (in meters), and d 0 is the reference distance;
the signal loss of the wireless signal propagating d meters in the air is L 0―Lpath;
the signal intensity signal model of the wireless signal in the wall body is as follows:
Lpen=αt
Wherein alpha is an attenuation coefficient (unit: dB/m) per unit thickness, and t is the thickness of the wall body;
I.e. the signal loss of the wireless signal after passing through the wall body with the thickness t is L pen.
As shown in fig. 9, for the schematic diagram of dividing the positioning selection area, it is assumed that in the process that the wireless signal transmitted by the wireless communication terminal arrives at the wireless communication internet of things device, the wireless communication terminal transmits the first signal intensity and the loss condition of the signal in each medium according to the barrier-free distance L1, the barrier-free distance L2, the barrier-free distance L3, the barrier-free distance L4 and the barrier-free distance L5, so that the signal intensity arriving at the positioning selection area can be calculated, namely the analog signal intensity, and if the analog signal intensity is equal to the second signal intensity, the positioning selection area is the first alternative position.
As shown in fig. 4, as a preferred embodiment of the present invention, after a person moves, recording the signal transmission intensity of the wireless communication terminal as the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative location to obtain the person location information, which specifically includes:
S401, recording the moving direction and the offset of the personnel through a triaxial acceleration sensor in the wireless communication internet of things equipment.
And S402, when the offset is larger than a preset value, recording that the signal emission intensity of the wireless communication terminal is the third signal intensity, and the signal intensity detected by the wireless communication Internet of things equipment is the fourth signal intensity.
In this step, the movement condition of the person is monitored, if the number of the first alternative positions is only one, the first alternative positions are directly used as the positions of the current person, if the number of the first alternative positions is not one, the movement of the person is required to be monitored again, at this time, the signal emission intensity of the wireless communication terminal is the third signal intensity, and at this time, the signal intensity detected by the wireless communication internet of things device is the fourth signal intensity.
S403, solving a plurality of second alternative positions based on the constructed signal loss equation, screening out the second alternative positions overlapped with the first alternative positions, and obtaining personnel position information.
In this step, a plurality of second alternative positions are obtained by solving the signal loss equation obtained by construction, the third signal intensity is regarded as the first signal intensity, the fourth signal intensity is regarded as the second signal intensity according to the same steps as in S302 and S303, then a circular area is constructed, a positioning alternative area is defined, the positioning alternative area with the calculated analog signal intensity equal to the fourth signal intensity is selected as the second alternative position, the moving direction and the offset of the person recorded in the triaxial acceleration sensor data are called, if the moving distance from north to south is M, the first alternative position and the second alternative position are screened, the first alternative position and the second alternative position meeting the requirements are selected, the second alternative position at the moment is the real-time position of the current person, if a plurality of second alternative positions meeting the conditions exist, the next round of second alternative position is waited, if the person moves from north to south for two times, then the second alternative position generated by a new round is screened if the person moves from north to south for N, and the position information is generated by the person is generated, and the position information is generated in real time.
As shown in fig. 5, a person positioning system based on an internet of things device according to an embodiment of the present invention includes:
the model building module 100 is configured to build a construction site BIM model, and a wireless communication terminal is set at a construction site, and staff is equipped with a wireless communication internet of things device, where the construction site BIM model includes a wall structure model, and each layer of building is provided with at least one wireless communication terminal.
In this embodiment, the model building module 100 builds a construction site BIM model, in the existing construction process, the BIM technology is gradually applied, the whole period monitoring can be performed on the construction project through the three-dimensional modeling mode, in the construction site BIM model, specific component structures of each wall body, such as a brick wall, a concrete wall, a stone, a light partition wall and the like, are recorded, thickness and position information of the wall body are recorded, in order to achieve positioning of personnel, the personnel are provided with wireless communication internet of things equipment, the wireless communication internet of things equipment can be mobile equipment, such as mobile phones and the like, and can also be other equipment with wireless communication modules and mobile networks, the wireless communication terminals are equipment with wireless communication functions, and are installed on the construction site.
The identity verification module 200 is configured to establish a data connection with the wireless communication terminal through the wireless communication internet of things device, and verify the identity of the wireless communication terminal.
In this embodiment, the authentication module 200 establishes data connection with the wireless communication terminal through the wireless communication internet of things device, when the wireless communication internet of things device detects the wireless communication terminal, the wireless communication terminal broadcasts its identity information outwards, the wireless communication internet of things device authenticates the identity of the wireless communication terminal, specifically, the identity of the wireless communication terminal can be determined by adopting a network authentication mode, and after the authentication is completed, the wireless communication internet of things device can perform joint positioning with the wireless communication terminal to determine the position of the person.
The initial position positioning module 300 is configured to record a first signal intensity of the wireless communication terminal, detect a second signal intensity of the wireless communication terminal through the wireless communication internet of things device, and generate a first alternative position through a construction site BIM model.
In this embodiment, the initial position positioning module 300 records the first signal strength of the wireless communication terminal, the first signal strength is the signal strength sent by the wireless communication terminal, the wireless signal sent by the wireless communication terminal passes through the wall body and is finally captured by the wireless communication internet of things device, at this time, the wireless signal strength is weakened due to the fact that the wall body can block the wireless signal, the signal strength detected by the wireless communication internet of things device is the second signal strength, the absorption capacity of different materials for the wireless signal is different, namely, the absorptivity of different wall bodies for the wireless signal is different, when the wireless signal passes through different wall bodies with different thicknesses, the attenuation amount of the signal strength is different, after the first signal strength and the second signal strength are obtained, the construction site BIM model is obtained, since the position of the wireless communication terminal is known, different signal attenuation coefficients can be set according to the prior test for different wall bodies, the signal strength sent by the wireless communication terminal is the first signal strength, the wireless signal strength sends out to the periphery of the wireless communication terminal, namely, the wireless signal strength passes through different paths and passes through different positions in the simulation areas, namely, the second signal strength reaches the different positions, and the position is different to be determined according to the different analog signal attenuation coefficients.
And the repeated positioning screening module 400 is configured to record that the signal emission intensity of the wireless communication terminal is the third signal intensity after the personnel moves, detect the fourth signal intensity of the wireless communication terminal, and screen the first alternative position to obtain the personnel position information.
In this embodiment, after the person moves, the repeated positioning screening module 400 records that the signal emission intensity of the wireless communication terminal is the third signal intensity, and because different walls have different signal attenuation coefficients and the propagation distances are also different, the number of the first alternative positions may be multiple, in order to further improve the positioning range, the wireless communication internet of things device establishes data connection with the wireless communication terminal, the wireless communication terminal continues to emit wireless signals, and similarly, the wireless communication internet of things device detects again to obtain the fourth signal intensity, according to the calculation mode in step S300, the analog signal intensity of the wireless signals reaching each position in the current floor is determined according to the signal attenuation coefficients, all the analog signal intensities are equal to the fourth signal intensity, namely the second alternative position, at this time, the moving direction and the offset of the person recorded in the triaxial acceleration sensor data are adjusted, if the moving distance from north to south is M, the first alternative position and the second alternative position are screened, the first alternative position and the second alternative position meeting the above requirements are selected, and the second alternative position from north is the second alternative position, if the second alternative position is the second alternative position, at this time, and the second alternative position is moved from north to north, and the second alternative position is generated, and the real-time is generated, and the new position is moved, if the first alternative position is generated, and the second alternative position is moved from the second alternative position is generated.
As shown in fig. 6, as a preferred embodiment of the present invention, the authentication module 200 includes:
The information broadcasting unit 201 is configured to broadcast identity information through a wireless communication terminal, and the wireless communication internet of things device establishes a data connection with the wireless communication terminal according to the broadcast identity information.
In this module, the information broadcasting unit 201 broadcasts identity information through the wireless communication terminal, so that the wireless communication networking device can identify the wireless communication terminal, when there are signals sent by a plurality of wireless communication terminals, the wireless communication networking device with the highest signal strength is connected with data, and in particular, the floor where the altitude sensor positioning personnel on the wireless communication networking device are located can also be matched.
The data transceiver unit 202 is configured to send a communication terminal verification code to the wireless communication internet of things device through the wireless communication terminal.
And the verification code verification module 203 is configured to query the background based on the communication terminal verification code by using the wireless communication internet of things device, and if the communication terminal verification code is matched with the corresponding wireless communication terminal, determine that the authentication passes.
In this module, the data transceiver unit 202 sends the communication terminal verification code to the wireless communication internet of things device through the wireless communication terminal, where the communication terminal verification code is bound with the wireless communication terminal one by one and is updated automatically according to a preset time interval, and the wireless communication internet of things device sends the communication terminal verification code to the background to query, so as to determine whether the current wireless communication terminal is a trusted device, and if so, the wireless communication terminal can continue to perform data transmission with the trusted device.
As shown in fig. 7, as a preferred embodiment of the present invention, the initial position location module 300 includes:
The first signal detection unit 301 is configured to obtain a first signal strength by acquiring a transmission signal strength of the wireless communication terminal through data transmission, and detect a second signal strength of the wireless communication terminal through the wireless communication internet of things device.
In this module, the first signal detection unit 301 obtains the transmitted signal intensity of the wireless communication terminal through data transmission, so as to obtain the first signal intensity, the signal intensity of all the wireless communication terminals before personnel positioning is the first signal intensity, and when the wireless signal sent by the wireless communication terminal reaches the wireless communication internet of things device after being blocked by the wall, the signal intensity is only the second signal intensity.
The selecting area dividing unit 302 is configured to locate the position of the wireless communication terminal in the BIM model on the construction site, and obtain a plurality of locating selecting areas with the position of the wireless communication terminal as the center of a circle.
In this module, the area selection dividing unit 302 locates the position of the wireless communication terminal in the construction site BIM model, then draws a circular area in the construction site BIM model with the position of the wireless communication terminal as the center of a circle, the radius of the circular area is the maximum signal coverage area of the wireless communication terminal, then performs gridding processing on the circular area to divide the circular area into a plurality of grid units, the size of the grid units is set according to the requirement, the larger the diameter of the circular area is, the higher the required precision is, the smaller the size of the grid units is, otherwise, the larger the size of the grid units is, and each grid unit is a location area selection.
And a loss equation construction unit 303, configured to determine a signal loss parameter based on the structure of the wall, construct a signal loss equation, and determine a point on each positioning selection area, which accords with the signal propagation position relationship, based on the signal loss equation, so as to obtain a first alternative position.
In this module, the loss equation construction unit 303 determines a signal loss parameter based on the structure of the wall, in the early stage of positioning, determines the signal loss parameter of the wireless signal passing through various walls by performing a signal test, selects one positioning selection area each time, uses the center of the positioning selection area as a positioning point, counts various wall thicknesses S i passing between the positioning point and the wireless communication terminal and a non-blocking distance d i, and the signal strength loss model of the wireless signal in the air is as follows:
Where L 0 is the path loss (in dB) at a reference distance d 0, n is the path loss index (typically between 2 and 4), d is the propagation distance (in meters), and d 0 is the reference distance;
the signal loss of the wireless signal propagating d meters in the air is L 0―Lpath;
the signal intensity signal model of the wireless signal in the wall body is as follows:
Lpen=αt
Wherein alpha is an attenuation coefficient (unit: dB/m) per unit thickness, and t is the thickness of the wall body;
I.e. the signal loss of the wireless signal after passing through the wall body with the thickness t is L pen.
As shown in fig. 9, for the schematic diagram of dividing the positioning selection area, it is assumed that in the process that the wireless signal transmitted by the wireless communication terminal arrives at the wireless communication internet of things device, the wireless communication terminal transmits the first signal intensity and the loss condition of the signal in each medium according to the barrier-free distance L1, the barrier-free distance L2, the barrier-free distance L3, the barrier-free distance L4 and the barrier-free distance L5, so that the signal intensity arriving at the positioning selection area can be calculated, namely the analog signal intensity, and if the analog signal intensity is equal to the second signal intensity, the positioning selection area is the first alternative position.
As shown in fig. 8, as a preferred embodiment of the present invention, the relocation screening module 400 includes:
the signal intensity adjusting unit 401 is configured to record a moving direction and an offset of a person through a triaxial acceleration sensor in the wireless communication internet of things device.
The second signal detecting unit 402 is configured to record that the signal transmission intensity of the wireless communication terminal is the third signal intensity and the signal intensity detected by the wireless communication internet of things device is the fourth signal intensity when the offset is greater than the preset value.
In this module, the signal strength adjusting unit 401 monitors the movement condition of the person, if the number of the first alternative positions is only one, the first alternative positions are directly used as the positions of the current person, if the number of the first alternative positions is not one, the monitoring needs to be performed again after the person moves, at this time, the signal emission strength of the wireless communication terminal is the third signal strength, and at this time, the signal strength detected by the wireless communication internet of things device is the fourth signal strength.
And the position screening unit 403 is configured to solve the constructed signal loss model to obtain a plurality of second candidate positions, and generate personnel position information by combining the triaxial acceleration sensor data.
In this module, the position screening unit 403 obtains a plurality of second alternative positions by solving the signal loss equation obtained by construction, regards the third signal intensity as the first signal intensity, regards the fourth signal intensity as the second signal intensity according to the same steps as in S302 and S303, then constructs a circular area, delimits a positioning selective area, selects the positioning selective area with the calculated analog signal intensity equal to the fourth signal intensity as the second alternative position, and retrieves the moving direction and the offset of the person recorded in the triaxial acceleration sensor data, if the moving distance from north to south is M, screens the first alternative position and the second alternative position, selects the first alternative position and the second alternative position meeting the above requirements, the second alternative position at this moment is the real-time position of the current person, if there are a plurality of second alternative positions meeting the above conditions, waits for the generation of the second alternative position of the next round, and moves the person twice at this moment, if the person moves from north to north, moves from east to west, then moves from north to east, and accordingly screens the first alternative position, and generates the position of the person, and generates the real-time position information.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A person positioning method based on an internet of things device, the method comprising:
building a construction site BIM model, setting a wireless communication terminal at a construction site, and equipping staff with wireless communication internet of things equipment, wherein the construction site BIM model comprises a wall structure model, and each layer of building is provided with at least one wireless communication terminal;
Establishing data connection with a wireless communication terminal through wireless communication Internet of things equipment, and verifying the identity of the wireless communication terminal;
Recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication internet of things equipment, and generating a first alternative position through a construction site BIM model;
After the personnel move, recording the signal emission intensity of the wireless communication terminal as the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the personnel position information.
2. The person positioning method based on the internet of things device according to claim 1, wherein the step of establishing a data connection with the wireless communication terminal through the wireless communication internet of things device and verifying the identity of the wireless communication terminal comprises the steps of:
broadcasting identity information through the wireless communication terminal, and establishing data connection with the wireless communication terminal by the wireless communication Internet of things equipment according to the broadcasting identity information;
transmitting a communication terminal verification code to the wireless communication Internet of things equipment through the wireless communication terminal;
The wireless communication internet of things device queries the background based on the communication terminal verification code, and if the communication terminal verification code is matched with the corresponding wireless communication terminal, the authentication is judged to pass.
3. The method for locating personnel based on the internet of things device according to claim 1, wherein the steps of recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication internet of things device, and generating the first alternative position through the construction site BIM model specifically comprise:
Acquiring the transmitted signal intensity of the wireless communication terminal through data transmission to obtain first signal intensity, and detecting the second signal intensity of the wireless communication terminal through wireless communication Internet of things equipment;
positioning the position of the wireless communication terminal in a construction site BIM model, and taking the position of the wireless communication terminal as a circle center to obtain a plurality of positioning selection areas;
And determining signal loss parameters based on the structure of the wall body, constructing a signal loss equation, and determining points, which accord with the signal propagation position relationship, on each positioning selection area based on the signal loss equation to obtain a first alternative position.
4. The person positioning method based on the internet of things device according to claim 3, wherein after the person moves, recording the signal emission intensity of the wireless communication terminal as the third signal intensity, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the person position information, the method specifically comprises the steps of:
recording the moving direction and the offset of personnel through a triaxial acceleration sensor in the wireless communication internet of things equipment;
When the offset is larger than a preset value, recording the signal emission intensity of the wireless communication terminal as third signal intensity, and the signal intensity detected by the wireless communication internet of things equipment as fourth signal intensity;
and solving to obtain a plurality of second alternative positions based on the constructed signal loss model, and generating personnel position information by combining the triaxial acceleration sensor data.
5. The method for locating persons based on the Internet of things device according to claim 4, wherein the second alternative positions are screened according to the moving direction and the offset of the persons, and the second alternative positions meeting the offset direction and the offset are screened and used as the positions of the current persons.
6. A person positioning system based on an internet of things device, the system comprising:
The model construction module is used for constructing a construction site BIM model, a wireless communication terminal is arranged at a construction site, staff is provided with wireless communication internet of things equipment, the construction site BIM model comprises a wall structure model, and each layer of building is provided with at least one wireless communication terminal;
the identity verification module is used for establishing data connection with the wireless communication terminal through the wireless communication Internet of things equipment and verifying the identity of the wireless communication terminal;
The initial position positioning module is used for recording the first signal intensity of the wireless communication terminal, detecting the second signal intensity of the wireless communication terminal through the wireless communication internet of things equipment and generating a first alternative position through a construction site BIM model;
And the repeated positioning screening module is used for recording that the signal emission intensity of the wireless communication terminal is the third signal intensity after the personnel move, detecting the fourth signal intensity of the wireless communication terminal, and screening the first alternative position to obtain the personnel position information.
7. The internet of things-based personnel positioning system of claim 6, wherein the identity verification module comprises:
The information broadcasting unit is used for broadcasting identity information through the wireless communication terminal, and the wireless communication Internet of things equipment establishes data connection with the wireless communication terminal according to the broadcasting identity information;
The data receiving and transmitting unit is used for transmitting a communication terminal verification code to the wireless communication internet of things equipment through the wireless communication terminal;
and the verification code verification module is used for inquiring the background based on the communication terminal verification code by the wireless communication internet of things equipment, and judging that the identity verification passes if the communication terminal verification code is matched with the corresponding wireless communication terminal.
8. The internet of things-based personnel positioning system of claim 6, wherein the initial position positioning module comprises:
The first signal detection unit is used for acquiring the transmitting signal intensity of the wireless communication terminal through data transmission to obtain first signal intensity, and detecting the second signal intensity of the wireless communication terminal through wireless communication internet of things equipment;
The selective area dividing unit is used for positioning the position of the wireless communication terminal in the construction site BIM model, and obtaining a plurality of positioning selective areas by taking the position of the wireless communication terminal as the circle center;
The loss equation construction unit is used for determining signal loss parameters based on the structure of the wall body, constructing a signal loss equation, and determining points, which accord with the signal propagation position relation, on each positioning selection area based on the signal loss equation to obtain a first alternative position.
9. The internet of things-based personnel positioning system of claim 8, wherein the repeated positioning screening module comprises:
the signal intensity adjusting unit is used for recording the moving direction and the offset of the personnel through a triaxial acceleration sensor in the wireless communication internet of things equipment;
the second signal detection unit is used for recording that the signal emission intensity of the wireless communication terminal is third signal intensity and the signal intensity detected by the wireless communication internet of things equipment is fourth signal intensity when the offset is larger than a preset value;
And the position screening unit is used for solving and obtaining a plurality of second alternative positions based on the constructed signal loss model and generating personnel position information by combining the triaxial acceleration sensor data.
10. The person positioning system based on the internet of things device according to claim 9, wherein the second alternative position is screened according to the moving direction and the offset of the person, and the second alternative position meeting the offset direction and the offset is screened and used as the position of the current person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411895444.6A CN119996935A (en) | 2024-12-22 | 2024-12-22 | Personnel positioning method and system based on IoT device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411895444.6A CN119996935A (en) | 2024-12-22 | 2024-12-22 | Personnel positioning method and system based on IoT device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119996935A true CN119996935A (en) | 2025-05-13 |
Family
ID=95629214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411895444.6A Pending CN119996935A (en) | 2024-12-22 | 2024-12-22 | Personnel positioning method and system based on IoT device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119996935A (en) |
-
2024
- 2024-12-22 CN CN202411895444.6A patent/CN119996935A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7406000B2 (en) | Positioning system using ultrasonic waves and method for operating the same | |
| KR100848322B1 (en) | Indoor wireless positioning device and method | |
| US7626546B2 (en) | Methods and systems for detection and location of multiple emitters | |
| Casas et al. | Hidden issues in deploying an indoor location system | |
| US7783302B2 (en) | Apparatus and method for determining a current position of a mobile device | |
| Prieto et al. | Performance evaluation of 3D-LOCUS advanced acoustic LPS | |
| US20100265093A1 (en) | Method of automatically generating fingerprint database for an indoor wireless location | |
| JP2002505560A (en) | Method and system for estimating the location of a subscriber in a wireless communication system service area | |
| EP3568709B1 (en) | A method for generating an indoor environment model and a method for determining position data for a location in an indoor environment | |
| JP2009504529A (en) | Elevator car calling method using wireless node network and system therefor | |
| KR101537742B1 (en) | Beacon and Listner for Indoor Positioning System | |
| JP6537206B2 (en) | Location information providing device and node network | |
| KR101709411B1 (en) | Method for positioning based on weighted triangulation and method for indoor positioning using the same | |
| CN105652265A (en) | Mobile range finding method, equipment and system | |
| CN111257830B (en) | WIFI positioning algorithm based on preset AP position | |
| Ahammed et al. | Survey on wireless fidelity (Wi-Fi) based indoor location technology for mobile devices | |
| Bhargava et al. | Locus: An indoor localization, tracking and navigation system for multi-story buildings using heuristics derived from Wi-Fi signal strength | |
| EP3543727B1 (en) | Method and system for server based mobile device monitoring in crowd- sourced pedestrian localization | |
| CN120034950A (en) | Indoor intercom positioning method, system and related equipment | |
| CN119996935A (en) | Personnel positioning method and system based on IoT device | |
| KR101901407B1 (en) | Apparatus and method for determining location | |
| CN108521631A (en) | A mobile AP identification method for indoor positioning | |
| KR101214560B1 (en) | Apparatus for collecting and method for generating collection predetermined position | |
| CN111867056A (en) | Wi-Fi positioning reference point marking method based on positioning accuracy and fingerprint overhead optimization | |
| Qi et al. | Fast floor identification method based on confidence interval of Wi-Fi signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |