CN111552006A - A device and method for preventing power failure of underground cables caused by construction operations - Google Patents

Abstract

The invention provides a device and a method for preventing underground cable fault power failure caused by construction operation, wherein the device comprises: the system comprises a plurality of cable early warning devices, a cloud storage and processing module and a manager terminal, wherein the cable early warning devices are installed and buried on the upper surface of an underground cable at set intervals; the cloud storage and processing module interacts with a manager terminal through wireless communication, stores user information, stores and compares cable early warning device information and construction information, and feeds back a comparison result and a corresponding construction suggestion; the manager terminal uploads the cable early warning device information and the construction information to the cloud storage and processing module through wireless communication, receives the comparison result and the corresponding construction suggestion from the cloud storage and processing module, and displays a prompt to a user according to the payment state. The method can enable different construction units to quickly and accurately know whether the cable exists below the construction position, avoids the occurrence of fault power failure caused by cable damage in construction, and is favorable for reducing the occurrence of fault power failure of the power distribution network.

Description

A device and method for preventing power failure of underground cables caused by construction operations

technical field

The invention belongs to the technical field of power failure prevention of cable lines, and in particular relates to a device and method for preventing power failure of underground cables caused by construction operations.

Background technique

Through the investigation of the power outage information of the power distribution network, it is found that in urban construction, because different construction units do not know the location and depth of the cables buried by the power sector, there are accidents every year due to the damage to the cables caused by construction operations. And sometimes, the construction unit is not standardized in operation. In order to save time, it does not report to the relevant power department before construction, so the power department cannot tell whether there is a cable at the construction location before construction. At the same time, due to the poor information sharing and timeliness between different departments, it takes a lot of time to apply to the power department for each construction to find out whether there are cables at the construction location. And the location of some cables may need to be kept secret, and the relevant departments are reluctant to disclose their specific location information to the public. Therefore, how to inform the construction unit of the information to avoid damaging the cables, and at the same time, do not reveal too much about the specific location and burial depth of the confidential cables. Very important.

Prior art document 1 (Zhang Binbin et al. An anti-external force damage system for underground power pipe network [P]. CN107452174A, 2017-12-08.) discloses a construction vibration signal around power cables based on sound feature information It is an anti-external force damage system for underground power pipeline network that can be processed and identified. Although the invention can use WEB digital map display and SMS alarm notification as notification methods, it can realize the management of the vibration data of the surrounding environment of the power pipeline. However, since this method realizes early warning by measuring the strength of the vibration signal, the distance between the vibration source and the measuring device will greatly affect the actual effect. In order to ensure the use effect of the device, a large number of the equipment needs to be installed on the cable device. At the same time, when the actual construction depth will not damage the cables located deeper on the ground, the device may also falsely alarm, so the accuracy and convenience of the system need to be improved.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the purpose of the present invention is to provide a device and a method for preventing power failure of underground cables caused by construction operations, so that different construction units can quickly and accurately know whether there is a cable under the construction location, simplify the filing process and shorten the time, Properly keep confidential cable information to avoid failure and power outage caused by construction damage to the cable.

The present invention adopts the following technical solutions. A device for preventing power outages of underground cables caused by construction operations, comprising: a plurality of cable warning devices, a cloud storage and processing module, a manager terminal, the cable warning devices are buried on the upper surface of the underground cables, and the plurality of cable warning devices are arranged to set the spacing Installation; the cloud storage and processing module interacts with the administrator terminal through wireless communication, stores user information, stores and compares cable warning device information and construction information, and feeds back the comparison results and corresponding construction suggestions; user information at least includes: account number and payment information ; Cable warning device information at least includes: location, depth and confidentiality status; construction information at least includes: planned construction scope, actual construction scope, planned construction depth, actual construction depth and construction content; comparison results and corresponding construction suggestions at least include: construction It will cause the cable to be damaged, and at least one candidate construction range location is given; if there is a cable in the planned construction range, the maximum construction depth threshold L6 is given; there is no cable in the planned construction range, and construction can be carried out; the manager terminal uses wireless communication and cable early warning The device, cloud storage and processing module interact, upload the cable warning device information and construction information to the cloud storage and processing module, receive the comparison results and corresponding construction suggestions from the cloud storage and processing module, and display prompts to the user according to the payment status.

Preferably, the cable early warning device includes: a casing and a power supply module, a voltage conversion module, a processor module, a positioning module and a wireless communication module arranged in the casing; The module and the wireless communication module are connected in parallel with the trunk as two branches.

Another aspect of the present invention provides a method for preventing power failure of underground cables caused by construction operations, using the above-mentioned device for preventing failure and power failure of underground cables caused by construction operations, comprising the following steps:

Step 1, install the cable early warning device, upload the cable early warning device information, the cable early warning device information at least includes: position, depth and security status, where the position refers to the position determined by the positioning module of the cable early warning device, and the depth refers to the cable early warning device shell. The vertical distance L1 between the surface and the ground, the confidentiality status refers to whether the underground cable is confidential;

Step 2, upload construction information, including at least: planned construction scope and planned construction depth;

Step 3, the cloud storage and processing module compares the cable warning device information and construction information, and issues the comparison results and construction suggestions to the manager terminal;

Step 4, generating a prompt on the administrator terminal;

Step 5: Obtain the depths of the n cable early warning devices closest to the center of the construction scope and the direction of their constituent lines Z1.

Preferably, step 1 specifically includes:

Step 1.1, set the installation spacing of multiple cable warning devices;

Step 1.2, installation and distance measurement of the cable warning device, refers to burying the cable warning device on the upper surface of the underground cable, using the distance measuring device to measure the depth L1 of the cable warning device, and using the positioning module of the cable warning device to obtain the position of the cable warning device.

Step 1.3, uploading the information of the cable warning device refers to uploading the position, depth and security status of the cable warning device to the cloud storage and processing module through the administrator terminal.

Preferably, step 2 specifically includes:

Step 2.1, setting the planned construction scope, means that when other construction personnel need to excavate and construct a certain area, the construction personnel first arrive at the planned construction site, and then obtain the current position through the positioning module of the administrator terminal, taking the current position as a reference. Click to set the planned construction scope;

Step 2.2, upload the set planned construction scope and planned construction depth L3 to the cloud storage and processing module through the manager terminal.

Preferably, step 3 specifically includes:

Step 3.1, horizontal distance comparison, means that the cloud storage and processing module selects the n cable early warning devices closest to the center of the planned construction scope to form a line Z1, and determines whether the line Z1 is located underground in the construction scope, or any point within the construction scope is the same as the one. Whether the horizontal distance ΔL _h at any point of Z1 is less than or equal to the specified horizontal distance value L4;

Step 3.2, vertical distance comparison, means that the cloud storage and processing module 7 performs the following calculations

where:

L1 _min is the minimum value of the cable warning device depth among the n cable warning devices;

min() is a function to find the minimum value;

ΔL _v is the absolute value of the difference between the planned construction depth L3 and the minimum depth L1 _min of the cable warning device;

L5 is the specified value of vertical distance;

L _vif is the judgment parameter;

Step 3.3, combine the horizontal distance comparison of step 3.1 and the vertical distance comparison of step 3.2 to generate comparison results and construction suggestions;

In step 3.4, the cloud storage and processing module 7 sends the comparison results and construction suggestions to the manager terminal.

Preferably, step 3.1 specifically includes:

The cloud storage and processing module selects 2-5 cable warning devices closest to the center of the planned construction scope to form line Z1.

Preferably, the generation comparison results and construction suggestions generated by the cloud storage and processing module include at least:

Case 1, Line Z1 is underground in the construction area, and L _vif ≤ 0, the comparison result is that the construction will cause damage to the cable, and the construction suggestion is at least one candidate construction area;

Case 2, ΔL _h ≤ L4, and L _vif ≤ 0, the comparison result is that the construction will cause damage to the cable, and the construction suggestion is at least one candidate construction area;

Case 3: Line Z1 is underground in the construction area, and L _vif > 0. The comparison result is that there are cables in the construction area. Please pay attention to the construction depth. The construction suggestion is the maximum construction depth threshold L6, and the actual construction depth L3 _actual should meet L3 _actual <L6<L1 _min ;

Case 4, ΔL _h ≤ L4, and L _vif >0, the comparison result is that there are cables in the construction area, please pay attention to the construction depth, the construction suggestion is the maximum construction depth threshold L6, and the actual construction depth L3 _actual should satisfy L3 _actual <L6<_L1min;

In case 5, ΔL _h > L4, the comparison result is that there is no cable in the construction scope, and the construction suggestion is that the construction can be carried out according to the plan.

Preferably, step 4 specifically includes:

Step 4.1, judge the viewing authority of the comparison result and construction suggestion. If the current user has not paid the fee, a prompt is generated to prompt the current user to pay the fee, and then the comparison result and construction suggestion can be viewed. If the current user has paid the fee, proceed to the next steps;

In step 4.2, the comparison results and construction suggestions generated by the cloud storage and processing modules are displayed on the manager's terminal.

Preferably, step 5 specifically includes:

Step 5.1, the manager terminal sends a request to the cloud storage and processing module to obtain the depths of the n cable early warning devices closest to the center of the construction scope and the direction of their constituent lines Z1.

Step 5.2, the cloud storage and processing module reads the security status of the n cable warning devices, and if the security status is a non-confidential line, returns to the manager terminal the depth of the nearest n cable warning devices in the center of the construction scope and their constituent lines Z1 If the confidentiality status is a confidential line, it will return to the administrator terminal to prompt that the line information will not be disclosed.

The beneficial effects of the present invention are that, compared with the prior art, it has the following characteristics:

1. The present invention can allow different construction units to quickly and accurately know whether there is a cable under the construction location, avoid the occurrence of power failure caused by construction damage to the cable, and help reduce the occurrence of power failure in the distribution network.

2. Compared with the original construction record before construction, the process is cumbersome and time-consuming, the present invention can greatly simplify the process and shorten the time.

3. The present invention selects whether to keep the location information confidential or not when uploading the location information. Different prompts will appear when the cloud storage and processing module feeds back the information to other managers’ terminals, which ensures that the construction will not be damaged while not leaking key information. cable.

Description of drawings

FIG. 1 is a flow chart of a device and a method of using a device for preventing power outages caused by underground cables caused by construction work according to the present invention.

FIG. 2 is a schematic structural diagram of a device and a method of use for preventing power outages of underground cables caused by construction work according to the present invention.

FIG. 3 is a schematic circuit diagram of a device according to the present invention for preventing the failure of underground cables caused by construction work.

Marked in the figure: 1-power module, 2-voltage conversion module, 3-processor module, 4-positioning module, 5-wireless communication module, 6-shell, 7-cloud storage and processing module, 8-administrator terminal.

Detailed ways

The present application will be further described below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present application.

2 and 3 , an embodiment of the present invention provides a device for preventing power outages of underground cables caused by construction operations, including: a plurality of cable warning devices, a cloud storage and processing module 7 , and a manager terminal 8 .

The cable warning device is buried on the upper surface of the underground cable, and multiple cable warning devices are installed at a set interval L2. Preferably, but not limited to, when the cable laying line is basically a straight line, the value of L2 is relatively large, generally 100-200 meters; When the line laid by the cable is relatively curved, it is generally necessary to install one at each inflection point of the line, and the value of L2 is also small.

The cable warning device includes: a casing 6 and a power supply module 1 , a voltage conversion module 2 , a processor module 3 , a positioning module 4 and a wireless communication module 5 arranged in the casing 6 . The positioning module 4 is preferably, but not limited to, GPS and/or Beidou positioning equipment.

The power supply module 1 , the voltage conversion module 2 and the processor module 3 are connected in series on the main road, and the positioning module 4 and the wireless communication module 5 are connected in parallel with the main road as two branches. The power module 1 is powered by taking energy from underground cables or using solar panels on the surface.

The cloud storage and processing module 7 interacts with the manager terminal 8 through wireless communication, stores user information, stores and compares cable warning device information and construction information, and feeds back comparison results and corresponding construction suggestions. User information includes at least: account number and payment information. The information of the cable early warning device includes at least: position, depth and security status, wherein the position is the position determined by the designated positioning module 4, the depth refers to the vertical distance L1 between the upper surface of the cable early warning device shell 6 and the ground, and the security status refers to the location under Is the cable confidential. The construction information shall at least include: planned construction scope, actual construction scope, planned construction depth, actual construction depth and construction content. The comparison results and corresponding construction suggestions include at least: construction will lead to cable damage, at least one candidate construction scope is given; if there are cables in the planned construction scope, the maximum construction depth threshold L6 is given; there is no cable in the planned construction scope, construction can be carried out .

The manager terminal 8 interacts with the cable warning device, cloud storage and processing module 7 through wireless communication. The manager terminal 8 uploads the cable warning device information and the construction information to the cloud storage and processing module 7, receives the comparison result and the corresponding construction suggestion from the cloud storage and processing module 7, and displays the comparison result and the corresponding construction suggestion to the paid user, After prompting unpaid users to pay, the comparison results and corresponding construction suggestions will be displayed. The manager terminal 8 can further send a request for viewing the cable warning device information to the cloud storage and processing module 7, and receive the cable warning device information of the non-confidential underground cable issued by the cloud storage and processing module 7.

Referring to Figure 1, a method for preventing power outages caused by underground cables due to construction operations, the steps are as follows:

Step 1, install the cable warning device and upload the cable warning device information. The cable early warning device information at least includes: position, depth and security status, where the position is the position determined by the positioning module 4, the depth refers to the vertical distance L1 between the upper surface of the cable early warning device shell 6 and the ground, and the security status refers to the underground cable. Is it confidential. Step 1 specifically includes:

Step 1.1, set the installation distance of the cable warning device: install one cable warning device every distance L2, and the interval distance L2 is determined by the actual situation of the cable line: when the cable laying line is basically a straight line, the value of L2 is larger, generally 100 -200 meters; when the line laid by the cable is relatively curved, it is generally necessary to install one at each inflection point of the line, and the value of L2 is also small.

Step 1.2, installation and distance measurement of the cable warning device: bury the cable warning device on the upper surface of the underground cable, use the distance measuring device to measure the depth L1 of the cable warning device, and use the positioning module 4 of the cable warning device to obtain the position of the cable warning device.

Step 1.3, uploading the cable warning device information: upload the location, depth and security status of the cable warning device to the cloud storage and processing module 7 through the manager terminal 8 .

Step 2, upload construction information, including at least: planned construction scope and planned construction depth. Step 2 specifically includes:

Step 2.1, set the planned construction scope: when the construction personnel need to excavate and construct a certain area, the construction personnel first arrive at the planned construction site, and then obtain the current position through the positioning module of the manager terminal 8. The scope selection includes at least the following three types: Form: 1) The construction radius is set with the current position as the center and the radius R through the manager terminal 8; 2) The size and orientation of the length and width of the rectangular construction range are set with the current position as the center; 3) The rectangle is set with the current position as the vertex The size and orientation of the length and width of the construction area;

Step 2.2, upload the set planned construction scope and planned construction depth L3 to the cloud storage and processing module 7 .

Step 3, the cloud storage and processing module 7 compares the cable warning device information and construction information, and issues the comparison result and construction suggestion to the manager terminal 8 . Specifically include:

Step 3.1, horizontal distance comparison: the cloud storage and processing module 7 selects n cable early warning devices closest to the center of the planned construction scope, such as but not limited to, 2 to 5 to form the line Z1, and judges whether the line Z1 is located in the underground of the construction scope. , or whether the horizontal distance ΔL _h between any point in the construction scope and any point in Z1 is less than or equal to the specified horizontal distance L4.

Step 3.2, Vertical Distance Comparison: Cloud Storage and Processing Module 7 performs the following calculations

where:

L1 _min is the minimum value of the cable warning device depth among the n cable warning devices;

min() is a function to find the minimum value;

ΔL _v is the absolute value of the difference between the planned construction depth L3 and the minimum depth L1 _min of the cable warning device;

L5 is the specified value of vertical distance;

_Lvif is a judgment parameter.

Step 3.3, combining the horizontal distance comparison of step 3.1 and the vertical distance comparison of step 3.2, to generate comparison results and construction suggestions.

Case 1: Line Z1 is underground in the construction area, and L _vif ≤ 0. The comparison result is that construction will cause damage to the cable, and the construction suggestion generated by the cloud storage and processing module 7 is at least one candidate construction area;

Case 2: ΔL _h ≤ L4, and L _vif ≤ 0, the comparison result is that the construction will lead to cable damage, and the construction suggestion generated by the cloud storage and processing module 7 is at least one candidate construction scope;

In cases 1 and 2, the construction proposal generated by the cloud storage and processing module 7 is at least one candidate construction scope, which means that the generation of the candidate construction scope is consistent with the selected form of the planned construction scope in step 2.1, for example, but not limited to, 1) as In step 2.1, the manager terminal 8 takes the current position as the center and sets the planned construction radius with the radius R, the candidate construction scope provides a suitable center position, and sets the construction radius with the same radius R to determine the construction scope, so that the line Z1 is located in the entire construction area. Outside the range, the horizontal distance between the center position of the circle and the closest point of the line Z1 is generally set to 1.5~4R; 2) For example, in step 2.1, the administrator terminal 8 sets the length of the rectangular construction range with the current position as the center or the current position as the vertex. Depending on the size and orientation of the width, as long as the candidate construction range satisfies that the line Z1 is located outside the rectangular construction range, the horizontal distance between the rectangular construction range and the closest point of the line Z1 is generally set to be 0.5 to 3 times the length of the rectangle;

Case 3: Line Z1 is underground in the construction area, and L _vif >0. The comparison result is that there are cables in the construction area. Please pay attention to the construction depth. The construction suggestion generated by the cloud storage and processing module 7 is the maximum construction depth threshold L6. The actual construction depth L3 _actual should satisfy L3 _actual < L6 < L1 _min ;

Case 4: ΔL _h ≤ L4, and L _vif >0, the comparison result is that there are cables in the construction area, please pay attention to the construction depth, the construction suggestion generated by the cloud storage and processing module 7 is the maximum construction depth threshold L6, the actual construction depth L3 _actual should satisfy L3 _actual < L6 < L1 _min ;

Case 5: ΔL _h > L4, the comparison result is that there is no cable in the construction area, and the construction suggestion generated by the cloud storage and processing module 7 is that the construction can be carried out according to the plan.

In step 3.4, the cloud storage and processing module 7 sends the comparison results and construction suggestions to the manager terminal 8 .

In step 4, a notification is generated on the manager terminal 8. Specifically include:

Step 4.1, judge the viewing authority of the comparison result and construction suggestion. If the current user has not paid the fee, a prompt is generated to prompt the current user to pay the fee, and then the comparison result and construction suggestion can be viewed. If the current user has paid the fee, proceed to the next steps;

In step 4.2, the comparison results and construction suggestions generated by the cloud storage and processing module 7 are displayed on the manager terminal 8 .

Step 5: Obtain the depths of the n cable early warning devices closest to the center of the construction scope and the direction of their constituent lines Z1. Specifically include:

Step 5.1, the manager terminal 8 sends a request to the cloud storage and processing module 7 to obtain the depths of the n cable warning devices closest to the center of the construction scope and the direction of their constituent lines Z1.

Step 5.2, the cloud storage and processing module 7 reads the security status of the n cable early warning devices, and if the security status is a non-confidential line, returns to the manager terminal 8 the depth and composition of the nearest n cable early warning devices in the center of the construction scope The direction of the line Z1; if the secret state is a secret line, a prompt is returned to the manager terminal 8 that the line information is not to be disclosed.

In step 6, the construction information is supplemented according to the feedback results of steps 1-5, including at least the actual construction scope, actual construction depth and construction content, and the supplemented construction information is uploaded to the cloud storage and processing module 7 through the manager terminal 8.

The device for preventing the failure and power outage of the underground cable caused by the construction operation is not only applicable to the cable, but also applicable to the optical fiber equipment.

The beneficial effects of the present invention are that, compared with the prior art, it has the following characteristics:

1. The present invention can allow different construction units to quickly and accurately know whether there is a cable under the construction location, avoid the occurrence of power failure caused by construction damage to the cable, and help reduce the occurrence of power failure in the distribution network.

2. Compared with the original construction record before construction, the process is cumbersome and time-consuming, the present invention can greatly simplify the process and shorten the time.

3. The present invention selects whether to keep the location information confidential or not when uploading the location information. Different prompts will appear when the cloud storage and processing module feeds back the information to other managers’ terminals, which ensures that the construction will not be damaged while not leaking key information. cable.

The applicant of the present invention has described and described the embodiments of the present invention in detail with reference to the accompanying drawings, but those skilled in the art should understand that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only to help readers better It should be understood that the spirit of the present invention is not limited to the protection scope of the present invention. On the contrary, any improvement or modification made based on the spirit of the present invention should fall within the protection scope of the present invention.

Claims (10)

1. A device for preventing power failure of underground cables caused by construction operations, comprising: a plurality of cable warning devices, a cloud storage and processing module (7), and a manager terminal (8), characterized in that, The cable warning device is buried on the upper surface of the underground cable, and multiple cable warning devices are installed at set intervals; The cloud storage and processing module (7) interacts with the manager terminal (8) through wireless communication, stores user information, stores and compares cable warning device information and construction information, and feeds back comparison results and corresponding construction suggestions; the user information includes at least: Account number and payment information; cable warning device information at least includes: location, depth and confidentiality status; construction information at least includes: planned construction scope, actual construction scope, planned construction depth, actual construction depth and construction content; comparison results and corresponding construction suggestions At least include: construction will lead to cable damage, give at least one candidate construction scope location; if there is cable in the planned construction scope, give the maximum construction depth threshold L6; no cable in the planned construction scope, construction can be carried out; The manager terminal (8) interacts with the cable early warning device and the cloud storage and processing module (7) through wireless communication, uploads the cable early warning device information and construction information to the cloud storage and processing module (7), and stores and processes the module from the cloud. (7) Receive the comparison result and the corresponding construction suggestion, and display a prompt to the user according to the payment status. 2. The device for preventing power outages caused by underground cables caused by construction operations as claimed in claim 1, wherein, The cable early warning device comprises: a casing (6), a power supply module (1), a voltage conversion module (2), a processor module (3), a positioning module (4) and a wireless communication module (5) arranged in the casing (6) ; The power supply module (1), the voltage conversion module (2) and the processor module (3) are connected in series on the main road, and the positioning module (4) and the wireless communication module (5) are connected in parallel with the main road as two branches. 3. a method for preventing construction work from causing underground cable fault and power outage, using the device for preventing construction work from causing underground cable fault and power outage as claimed in claim 1 or 2, it is characterized in that comprising the following steps: Step 1, install the cable early warning device, upload the cable early warning device information, the cable early warning device information at least includes: position, depth and security status, where the position refers to the position determined by the positioning module (4) of the cable early warning device, and the depth refers to the cable early warning device. The vertical distance L1 between the upper surface of the device casing (6) and the ground, the confidentiality state refers to whether the underground cable is kept secret; Step 2, upload construction information, including at least: planned construction scope and planned construction depth; Step 3, the cloud storage and processing module (7) compares the cable warning device information and the construction information, and issues the comparison results and construction suggestions to the manager terminal (8); Step 4, generating a prompt at the administrator terminal (8); Step 5: Obtain the depths of the n cable early warning devices closest to the center of the construction scope and the direction of their constituent lines Z1. 4. The method for preventing construction work from causing a power failure of an underground cable according to claim 3, characterized in that, Step 1 specifically includes: Step 1.1, set the installation spacing of multiple cable warning devices; Step 1.2, installation and distance measurement of the cable warning device, refers to burying the cable warning device on the upper surface of the underground cable, using the distance measuring device to measure the depth L1 of the cable warning device, and using the positioning module (4) of the cable warning device to obtain the cable warning device. Location. Step 1.3, uploading the information of the cable warning device refers to uploading the position, depth and security status of the cable warning device to the cloud storage and processing module (7) through the manager terminal (8). 5. The method for preventing construction work from causing a power failure of an underground cable according to claim 3, characterized in that, Step 2 specifically includes: Step 2.1, setting the planned construction scope, means that when other construction personnel need to excavate and construct an area, the construction personnel first arrive at the planned construction site, and then obtain the current position through the positioning module of the manager terminal (8), and use the current The location is the reference point to set the planned construction scope; Step 2.2, upload the set planned construction scope and planned construction depth L3 to the cloud storage and processing module (7) through the manager terminal (8). 6. The method according to claim 3, characterized in that, Step 3 specifically includes: Step 3.1, horizontal distance comparison, means that the cloud storage and processing module (7) selects the n cable early warning devices closest to the center of the planned construction scope to form a line Z1, and judges whether the line Z1 is located underground in the construction scope, or within the construction scope. Whether the horizontal distance △L _h between any point and any point in Z1 is less than or equal to the specified horizontal distance value L4; Step 3.2, vertical distance comparison, means that the cloud storage and processing module 7 performs the following calculations

where: L1 _min is the minimum value of the cable warning device depth among the n cable warning devices; min() is a function to find the minimum value; ΔL _v is the absolute value of the difference between the planned construction depth L3 and the minimum depth L1 _min of the cable warning device; L5 is the specified value of vertical distance; L _vif is the judgment parameter; Step 3.3, combine the horizontal distance comparison of step 3.1 and the vertical distance comparison of step 3.2 to generate comparison results and construction suggestions; In step 3.4, the cloud storage and processing module 7 sends the comparison results and construction suggestions to the manager terminal (8). 7. The method for preventing construction work from causing a power failure of an underground cable according to claim 6, characterized in that, Step 3.1 specifically includes: The cloud storage and processing module (7) selects 2-5 cable early warning devices closest to the center of the planned construction scope to form a line Z1. 8. The method according to claim 6 or 7, characterized in that, The generation comparison results and construction suggestions generated by the cloud storage and processing module (7) include at least: Case 1, Line Z1 is underground in the construction area, and L _vif ≤ 0, the comparison result is that the construction will cause damage to the cable, and the construction suggestion is at least one candidate construction area; Case 2, ΔL _h ≤ L4, and L _vif ≤ 0, the comparison result is that the construction will cause damage to the cable, and the construction suggestion is at least one candidate construction area; Case 3: Line Z1 is underground in the construction area, and L _vif > 0. The comparison result is that there are cables in the construction area. Please pay attention to the construction depth. The construction suggestion is the maximum construction depth threshold L6, and the actual construction depth L3 _actual should meet L3 _actual < L6 < L1 _min ; Case 4, ΔL _h ≤ L4, and L _vif > 0, the comparison result is that there are cables in the construction area, please pay attention to the construction depth, the construction suggestion is the maximum construction depth threshold L6, the actual construction depth L3 _actual should satisfy L3 _actual < L6 <_L1min; Case 5, ΔL _h > L4, the comparison result is that there is no cable in the construction scope, and the construction suggestion is that the construction can be carried out according to the plan. 9. The method according to claim 3, characterized in that, Step 4 specifically includes: Step 4.1, judge the viewing authority of the comparison result and construction suggestion. If the current user has not paid the fee, a prompt is generated to prompt the current user to pay the fee, and then the comparison result and construction suggestion can be viewed. If the current user has paid the fee, proceed to the next steps; In step 4.2, the comparison results and construction suggestions generated by the cloud storage and processing module (7) are displayed on the manager terminal (8). 10. The method according to claim 3, characterized in that, Step 5 specifically includes: Step 5.1, the manager terminal (8) sends a request to the cloud storage and processing module (7) to obtain the depth of the n cable early warning devices closest to the center of the construction scope and the direction of their constituent line Z1. Step 5.2, the cloud storage and processing module (7) reads the confidentiality status of the n cable warning devices, and if the confidentiality status is a non-confidential line, returns to the manager terminal (8) the nearest n cable warning devices in the center of the construction scope. The depth and the direction of its constituent line Z1; if the confidential state is a confidential line, a prompt is returned to the manager terminal (8) to not disclose the line information.

Images