Breakpoint positioning system and method based on buried pipeline warning tape

Abstract

The invention discloses a breakpoint positioning system and method based on a buried pipeline warning tape, and relates to the field of breakpoint positioning. Acquiring signal data transmitted by the warning tape through the monitoring extension set; the signal data is determined based on the positioning grating sensor signal cable; the signal data is an access signal or an open circuit signal; and the warning tape monitoring station obtains position information of the monitoring extension set, when the signal data is an open circuit signal, an equivalent circuit method or an induction coil principle is adopted, breakpoint coordinates are determined according to a set layout mode, and breakpoint positioning is carried out according to the position information and the breakpoint coordinates. According to the invention, breakpoint positioning can be rapidly realized.

Description

Technical Field

[0001] The present application relates to the field of breakpoint positioning, and in particular to a breakpoint positioning system and method based on a buried pipeline warning tape. Background Art

[0002] Warning tapes, also known as marking tapes, are widely used in warning and protection of various gas pipelines, oil pipelines, urban water supply and drainage, gas and liquid pipeline transportation systems, power cables, communication optical cables and other transportation systems related to national economy and people's livelihood and information transmission systems. Especially for the protection of various complex urban pipe network construction sites, road construction sites, traffic accident sites, construction sites, and direct buried pipelines in the field, it has an obvious protective warning effect.

[0003] However, when the warning tape is damaged, how to provide the location and scope of the damage in the first place so that the pipeline management unit can promptly discover the dangerous situation and stop it, and avoid the occurrence of abnormal pipeline damage accidents, is crucial and is also a problem that needs to be solved urgently. Summary of the invention

[0004] The purpose of this application is to provide a breakpoint positioning system and method based on a buried pipeline warning tape, which can quickly realize breakpoint positioning.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a breakpoint positioning system based on a buried pipeline warning tape, the breakpoint positioning system based on a buried pipeline warning tape comprises: a warning tape monitoring station, a warning tape and at least one monitoring extension;

[0007] The warning tape includes a positioning grid sensor signal cable and a double-core flexible wire arranged in a set arrangement; the warning tape is laid at a set position above the buried pipeline;

[0008] The monitoring extension is connected to the warning strip; the warning strip monitoring station is connected to the monitoring extension;

[0009] The monitoring extension is used to obtain the signal data transmitted by the warning tape; the signal data is determined based on the positioning grid sensor signal cable; the signal data is: a circuit breaker signal or a circuit breaker signal;

[0010] The warning strip monitoring station is used to:

[0011] Get the location information of the monitoring extension;

[0012] When the signal data is a disconnection signal, the breakpoint coordinates are determined according to the set layout method by using an equivalent circuit method or an induction coil principle;

[0013] The breakpoint is located according to the position information and the breakpoint coordinates.

[0014] Optionally, the warning strip adopts a grid-like network structure;

[0015] Wherein, the double-core flexible conductor includes: a positioning grid transverse cable and a positioning grid longitudinal cable;

[0016] The transverse cables of the positioning grid and the longitudinal cables of the positioning grid are subjected to reciprocating bending and weaving processing with a set span to obtain a grid-shaped network;

[0017] The ends of the two-core flexible wires in the grid-shaped network are connected to the positioning grid sensor signal cables.

[0018] Optionally, the warning strip adopts a central axis symmetrical structure;

[0019] Wherein, the positioning grid sensor signal cable is arranged at a preset reference axis; the dual-core flexible wire is symmetrically distributed based on the central axis to obtain a first wire assembly and a second wire assembly; the central axis is obtained by drawing a perpendicular line from the midpoint of the preset reference axis to another axis parallel to the preset reference axis;

[0020] For the first conductor assembly, from the preset reference axis to another axis, the mutually parallel dual-core flexible conductors are arranged in a sequentially increasing manner according to set lengths.

[0021] Optionally, the set length is 10 meters.

[0022] Optionally, the breakpoint positioning system based on the buried pipeline warning tape further includes: a monitoring signal main cable;

[0023] The warning tape is connected to the monitoring extension via the monitoring signal main cable;

[0024] The warning strip monitoring station is connected to the monitoring extension via the monitoring signal main cable.

[0025] In a second aspect, the present application provides a method for locating a breakpoint based on a buried pipeline warning tape, wherein the method for locating a breakpoint based on a buried pipeline warning tape is implemented by the above-mentioned breakpoint locating system based on a buried pipeline warning tape; the method for locating a breakpoint based on a buried pipeline warning tape comprises:

[0026] Acquire information data; the information data includes: signal data transmitted by the warning tape and location information of the monitoring extension; the signal data is determined based on the positioning grid sensor signal cable in the warning tape; the signal data is: a path signal or a disconnection signal;

[0027] When the signal data is a circuit-breaking signal, the breakpoint coordinates are determined according to the set layout of the double-core flexible conductor using the equivalent circuit method or the induction coil principle;

[0028] The breakpoint is located according to the position information and the breakpoint coordinates.

[0029] Optionally, the equivalent circuit method includes: a parallel resistance method and a switch polling method.

[0030] Optionally, the process of determining the breakpoint coordinates using the parallel resistance method specifically includes:

[0031] When the warning tape adopts a grid-shaped network structure, the resistance value corresponding to the double-core flexible wire is determined according to Ohm's law;

[0032] Determine a signal acquisition coordinate matrix according to the resistance value and parameter data of the warning band; the parameter data includes: length, width and grid side length of a grid network structure;

[0033] The breakpoint coordinates are determined according to the signal acquisition coordinate matrix.

[0034] Optionally, the process of determining the breakpoint coordinates by using the switch patrol method specifically includes:

[0035] When the warning tape adopts a grid network structure, the double-core flexible wire is tested based on an on-off control switch of an external device to obtain a test result; the test result includes a conduction state;

[0036] Determining a test acquisition coordinate matrix according to the test results and the parameter data;

[0037] The breakpoint coordinates are determined according to the test acquisition coordinate matrix.

[0038] Optionally, the process of determining the breakpoint coordinates using the induction coil principle specifically includes:

[0039] When the warning strip adopts a central axis symmetrical structure, the vector magnetic potential is determined based on electromagnetic field theory;

[0040] Based on Faraday's law of electromagnetic induction, determining the induced electric field according to the vector magnetic potential;

[0041] determining a scalar electric potential based on the induced electric field;

[0042] Determining a potential coordinate matrix according to the scalar potential and the parameter data;

[0043] The breakpoint coordinates are determined according to the potential coordinate matrix.

[0044] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0045] The present application provides a breakpoint positioning system and method based on the warning tape of the buried pipeline. The signal data transmitted by the warning tape is obtained through the monitoring extension; the warning tape monitoring station obtains the location information of the monitoring extension. When the signal data is a circuit-breaking signal, the equivalent circuit method or the induction coil principle is used to determine the breakpoint coordinates according to the set layout method, and the breakpoint is located according to the location information and the breakpoint coordinates. The present application can provide the location and range of the damage in the first place, so as to facilitate the pipeline management unit to promptly discover the dangerous situation and stop it, and avoid the occurrence of abnormal pipeline damage accidents. Therefore, the present application can quickly realize the breakpoint positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 This is a structural diagram of the breakpoint positioning system based on the buried pipeline warning tape of this application;

[0048] Figure 2 A schematic diagram of a warning belt with a grid-like network structure;

[0049] Figure 3 It is a schematic diagram of a warning strip with a central axis symmetrical structure;

[0050] Figure 4 This is a schematic diagram of the structure of the warning strip;

[0051] Figure 5 It is a schematic diagram of the structure of the monitoring extension;

[0052] Figure 6 This is a schematic diagram of the internal structure of the monitoring extension;

[0053] Figure 7 This is a schematic diagram of the connection structure of the main cable for monitoring signals;

[0054] Figure 8 Schematic diagram of the breaking point location;

[0055] Fig. 9 is the equivalent circuit diagram;

[0056] Fig.10 It is a schematic diagram of the frame of a double-core flexible conductor;

[0057] Fig.11 This is the equivalent circuit diagram corresponding to the switch patrol method.

[0058] Figure markings: warning strip monitoring station-1, warning strip-2, buried pipeline-3, soil around pipeline-4, monitoring extension-5, monitoring signal main cable-6, warning strip signal lead-201, grid network-202, waterproof signal connector-203, warning strip upper film-204, warning strip lower film-205, monitoring extension upstream connector-501, monitoring extension downstream connector-502, local signal connector-503, waterproof extension housing-504, monitoring extension mainboard-505, extension main monitoring function module-506, monitoring extension upstream wiring terminal-507, monitoring extension downstream wiring terminal-508, monitoring extension local signal wiring terminal-509, upstream signal connector-601, downstream signal connector-602. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0061] like Figure 1 As shown, an embodiment of the present application provides a breakpoint positioning system based on a buried pipeline warning tape, and the breakpoint positioning system based on a buried pipeline warning tape includes: a warning tape monitoring station 1, a warning tape 2 and at least one monitoring extension 5.

[0062] The warning tape 2 includes a positioning grid sensor signal cable and a double-core flexible wire arranged in a set arrangement; the warning tape 2 is laid at a set position above the buried pipeline 3. In actual application, the warning tape 2 is laid after the buried pipeline 3 is backfilled with a certain thickness of soil 4 around the pipeline.

[0063] The monitoring extension 5 is connected to the warning tape 2; the warning tape monitoring station 1 is connected to the monitoring extension 5; the monitoring extension 5 is used to obtain the signal data transmitted by the warning tape 2; the signal data is determined based on the positioning grid sensor signal cable; the signal data is: a path signal or a circuit breaker signal.

[0064] The warning zone monitoring station 1 is used to obtain the location information of the monitoring extension 5. When the signal data is a circuit-breaking signal, the equivalent circuit method or the induction coil principle is used to determine the breakpoint coordinates according to the set layout method.

[0065] The warning strip monitoring station 1 is also used to locate the breakpoints according to the position information and the breakpoints.

[0066] In one embodiment, the warning tape 2 adopts a grid-shaped network structure; wherein the double-core flexible conductor includes: a positioning grid transverse cable and a positioning grid longitudinal cable.

[0067] The horizontal cables and longitudinal cables of the positioning grid are folded and woven back and forth at a set span to obtain a grid-like network; the ends of the two-core flexible wires in the grid-like network are connected to the positioning grid sensor signal cables. The schematic diagram of the warning tape with a grid-like network structure is shown in Figure 2 shown.

[0068] The monitoring signal network in the warning strip 2 is woven from double-core flexible wires in the horizontal and vertical directions, and the two cores at the end of each double-core flexible wire are connected to form a loop; the starting end of each double-core flexible wire in the horizontal and vertical directions is connected to the intelligent warning strip signal lead through the positioning grid sensor signal cable; specifically, the double-core flexible wires in the horizontal and vertical directions of the positioning grid longitudinal cable and the positioning grid transverse cable are respectively bent back and forth in a "Z" and "N" shape with a certain span to weave into a grid-like network. Except for the edges, each grid edge line contains double-core flexible wires in the horizontal and vertical directions.

[0069] In one embodiment, the warning tape 2 adopts a central axis symmetrical structure; wherein the positioning grid sensor signal cable is arranged at a preset reference axis; the double-core flexible wire is symmetrically distributed based on the central axis to obtain a first wire assembly and a second wire assembly; the central axis is obtained by drawing a perpendicular line from the midpoint of the preset reference axis to another axis parallel to the preset reference axis. The schematic diagram of the warning tape with a central axis symmetrical structure is shown in FIG. Figure 3 shown.

[0070] For the first conductor assembly, from the preset reference axis to the other axis, the mutually parallel dual-core flexible conductors are arranged in a sequentially increasing manner according to a set length. The set length can be 10 meters, and the length can be adjusted according to actual needs.

[0071] The breakpoint positioning system based on the buried pipeline warning tape also includes: a monitoring signal main cable 6; the warning tape 2 is connected to the monitoring extension 5 via the monitoring signal main cable 6; and the warning tape monitoring station 1 is connected to the monitoring extension 5 via the monitoring signal main cable 6.

[0072] like Figure 4As shown, in actual application, the warning tape includes an intelligent warning tape signal lead 201, a flexible wire braided net, that is, a grid-shaped network 202 woven from dual-core flexible wires, and a waterproof signal connector 203. The flexible wire braided net also uses flexible insulated wires and braiding materials such as PE to cross-weave into a mesh. The flexible wire braided net is located between the upper film 204 of the warning tape and the lower film 205 of the warning tape, and is bonded to form a waterproof warning tape. The width can be set to 15cm to 80cm according to actual needs, and the length varies from 5 to 200m.

[0073] like Figure 5 As shown, the monitoring extension includes a monitoring extension upstream connector 501, a monitoring extension downstream connector 502, a local station signal connector 503 and a waterproof extension housing 504. The monitoring extension upstream connector 501 is connected to the upstream monitoring extension or warning band monitoring station 1, and the monitoring extension downstream connector 502 is connected to the downstream monitoring extension. When there is no downstream monitoring extension, a waterproof plug is set for sealing.

[0074] like Figure 6 As shown, the monitoring extension mainboard 505 is provided with an extension main monitoring function module 506, a monitoring extension upstream terminal 507, a monitoring extension downstream terminal 508 and a monitoring extension local signal terminal 509. The monitoring extension upstream terminal 507 and the monitoring extension downstream terminal 508 are communication and power supply interfaces, which are connected to the monitoring main cable through the monitoring extension upstream connector 501 and the monitoring extension downstream connector 502 respectively; the monitoring extension local signal terminal 509 is a multi-core terminal, one end of which is connected to the extension main monitoring function module, and the other end is connected to the intelligent warning belt through the local signal connector, so as to realize the monitoring of the on-off of each flexible wire in the intelligent warning belt.

[0075] like Figure 7 As shown, the monitoring signal main cable 6 includes an armored main cable and an upstream signal connector 601 and a downstream signal connector 602 connected at both ends thereof.

[0076] The embodiment of the present application provides a method for locating a breakpoint based on a warning tape of an underground pipeline. The method is implemented by a breakpoint locating system based on a warning tape of an underground pipeline. The method for locating a breakpoint based on a warning tape of an underground pipeline includes:

[0077] Step 100: Acquire information data. The information data includes: signal data transmitted by the warning tape and location information of the monitoring extension; the signal data is determined based on the positioning grid sensor signal cable in the warning tape; the signal data is: a circuit breaker signal or a disconnection signal.

[0078] Step 200: When the signal data is a circuit-breaking signal, the breakpoint coordinates are determined according to the set layout of the dual-core flexible conductor using an equivalent circuit method or an induction coil principle.

[0079] Step 300: Locate the breakpoint according to the position information and the breakpoint coordinates.

[0080] The equivalent circuit method includes: parallel resistance method and switch patrol method.

[0081] The process of determining the breakpoint coordinates using the parallel resistance method specifically includes:

[0082] When the warning tape adopts a grid network structure, the resistance value corresponding to the double-core flexible wire is determined according to Ohm's law; the signal acquisition coordinate matrix is ​​determined according to the resistance value and the parameter data of the warning tape; the parameter data includes: length, width and grid side length of the grid network structure.

[0083] Determine the breakpoint coordinates based on the signal acquisition coordinate matrix.

[0084] The process of determining the breakpoint coordinates using the switch patrol method specifically includes:

[0085] When the warning tape adopts a grid network structure, the double-core flexible wire is tested based on the on-off control switch of the peripheral device to obtain the test result; the test result includes the conduction state.

[0086] According to the test results and parameter data, the test acquisition coordinate matrix is ​​determined; according to the test acquisition coordinate matrix, the breakpoint coordinates are determined.

[0087] In actual applications, since the double-core flexible wire is made of soft material, it will break when it encounters external force, causing the circuit to be disconnected. Because each grid edge contains double-core flexible wires in both horizontal and vertical directions, the break will cause the two double-core flexible wires in both horizontal and vertical directions to be disconnected. According to the compilation records of cables in both horizontal and vertical directions, the coordinates of the damaged point can be quickly generated by the number of the broken cable, so as to locate the geographical location of the event in combination with the on-site construction records.

[0088] like Figure 8 The breaking points shown correspond to the two double-core flexible conductors corresponding to X3 and Y4, so their coordinates can be located through X3 and Y4.

[0089] Parallel resistance method:

[0090] First, connect the dual-core flexible wire as a wire to the parallel resistor network. Each wire corresponds to a resistor. When the wires are connected, the parallel circuit branch where the corresponding resistor is located is valid. When the dual-core flexible wire is broken, the corresponding circuit branch is disconnected. The specific parallel circuit resistance value calculation can be equivalent to the circuit as follows: Fig. 9 .

[0091] When multiple resistors such as R1 to Rn are connected in parallel, according to Ohm's law, the calculation can be as follows:

[0092]

[0093] For the convenience of identification, it is stipulated that the resistance value when the corresponding double-core flexible wire is broken is a variable identified by the corresponding cable number. For example, the corresponding resistance values ​​of X1, X2, ..., Xn are A1 to An respectively, and the corresponding resistance values ​​of Y1, Y2, ..., Yn are B1 to Bn respectively. Therefore, when there are only 4 double-core flexible wires, the identification values ​​of each resistance are as follows:

[0094]

[0095]

[0096] According to the above algorithm, the serial number of the broken double-core flexible conductor can be quickly obtained through the collector, and its specific location can be obtained according to the following algorithm.

[0097] According to the parameter information of the intelligent warning strip, that is, the parameter data, the side length value of the horizontal and vertical double-core flexible wire grid can be obtained, which is also the maximum resolution of positioning. For the convenience of description, the midpoint of each grid frame is used as the reference point, such as Fig.10 As shown, the overlapping borders of the horizontal and vertical double-core flexible wires can be combined with two wire numbers to form a pair of data combinations to ensure the coordinates. For example, the coordinates of the overlapping borders of X3 and Y4 can be recorded as (A3, B4) using resistance identification values.

[0098] According to the size data of the intelligent warning tape, the coordinate matrix of each identification point with 0.5 times the side length of the square can be obtained as follows. When a damage alarm occurs, the system can quickly locate it by looking up the table.

[0099] (0.5, 0.5) (A1, 0.5) (1.5, 0.5) (A2, B1) (2.5, 0.5) (A3, 0.5) (3.5, 0.5) (A4, B4) (4.5, 0.5)

[0100] (A1,B1)(1,1)(A2,B1)(2,1)(A3,B1)(3,1)(A4,B1)(4,1)(4.5,B1)

[0101] (0.5,1.5)(A1,B1)(1.5,1.5)(A2,B2)(2.5,1.5)(A3,B1)(3.5,1.5)(A4,B4)(4.5,1.5)

[0102] (0.5,B2)(1,2)(A1,B2)(2,2)(A2,B2)(3,2)(A3,B2)(4,2)(A4,B2)

[0103] (0.5, 2.5) (A1, B2) (1.5, 2.5) (A2, B3) (2.5, 2.5) (A3, B2) (3.5, 2.5) (A4, B4) (4.5, 2.5)

[0104] (A1,B3)(1,3)(A2,B3)(2,3)(A3,B3)(3,3)(A4,B3)(4,3)(4.5,B3)

[0105] (0.5, 3.5) (A1, B3) (1.5, 3.5) (A2, B4) (2.5, 3.5) (A3, B3) (3.5, 3.5) (A4, B4) (4.5, 3.5)

[0106] (0.5,B4)(1,4)(A1,B4)(2,4)(A2,B4)(3,4)(A3,B4)(4,4)(A4,B4)

[0107] (0.5, 4.5) (A1, B4) (1.5, 4.5) (A2, 4.5) (2.5, 4.5) (A3, B4) (3.5, 4.5) (A4, 4.5) (4.5, 4.5)

[0108] In the specific implementation, only the position represented by the horizontal and vertical wires can be identified. Fig.10 The relationship between the horizontal and vertical wires in the grid can be used to obtain the possible damage identification point coordinate matrix. When the damage alarm value is monitored, the location can be achieved by directly looking up the table.

[0109] Switch patrol method:

[0110] In order to detect the conduction status of each horizontal and vertical conductor, this embodiment provides an on-off control switch for each conductor. When the detection is performed, the control switches of the corresponding channels are closed one by one to detect the conduction status thereof.

[0111] like Fig.11 As shown, when a break occurs, the identification number of the channel is recorded, for example, the identification numbers corresponding to X1, X2, ..., Xn are A1 to An, and the identification numbers corresponding to Y1, Y2, ..., Yn are B1 to Bn.

[0112] The process of determining the breakpoint coordinates using the induction coil principle specifically includes:

[0113] When the warning tape adopts an axisymmetric structure, the vector magnetic potential is determined based on the electromagnetic field theory; the induced electric field is determined based on the vector magnetic potential based on Faraday's law of electromagnetic induction; the scalar electric potential is determined based on the induced electric field; the electric potential coordinate matrix is ​​determined based on the scalar electric potential and parameter data; and the breakpoint coordinates are determined based on the electric potential coordinate matrix.

[0114] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A breakpoint positioning system based on buried pipeline warning tape, characterized in that: The breakpoint positioning system based on the buried pipeline warning belt comprises: a warning belt monitoring station, a warning belt and at least one monitoring extension; The warning tape includes a positioning grid sensor signal cable and a double-core flexible wire arranged in a set arrangement; the warning tape is laid at a set position above the buried pipeline; The monitoring extension is connected to the warning strip; the warning strip monitoring station is connected to the monitoring extension; The monitoring extension is used to obtain the signal data transmitted by the warning tape; the signal data is determined based on the positioning grid sensor signal cable; the signal data is: a circuit breaker signal or a circuit breaker signal; The warning strip monitoring station is used to: Get the location information of the monitoring extension; When the signal data is a disconnection signal, the breakpoint coordinates are determined according to the set layout method by using an equivalent circuit method or an induction coil principle; The breakpoint is located according to the position information and the breakpoint coordinates.

2. The breakpoint positioning system based on the buried pipeline warning tape according to claim 1 is characterized in that: The warning belt adopts a grid-like network structure; Wherein, the double-core flexible conductor includes: a positioning grid transverse cable and a positioning grid longitudinal cable; The transverse cables of the positioning grid and the longitudinal cables of the positioning grid are subjected to reciprocating bending and weaving processing with a set span to obtain a grid-shaped network; The ends of the two-core flexible wires in the grid-shaped network are connected to the positioning grid sensor signal cables.

3. The breakpoint positioning system based on the buried pipeline warning tape according to claim 1 is characterized in that: The warning strip adopts a central axis symmetrical structure; Wherein, the positioning grid sensor signal cable is arranged at a preset reference axis; the dual-core flexible wire is symmetrically distributed based on the central axis to obtain a first wire assembly and a second wire assembly; the central axis is obtained by drawing a perpendicular line from the midpoint of the preset reference axis to another axis parallel to the preset reference axis; For the first conductor assembly, from the preset reference axis to another axis, the mutually parallel dual-core flexible conductors are arranged in a sequentially increasing manner according to set lengths.

4. The breakpoint positioning system based on the buried pipeline warning tape according to claim 3 is characterized in that: The set length is 10 meters.

5. The breakpoint positioning system based on the buried pipeline warning tape according to claim 1 is characterized in that: The breakpoint positioning system based on the buried pipeline warning tape also includes: a monitoring signal main cable; The warning tape is connected to the monitoring extension via the monitoring signal main cable; The warning strip monitoring station is connected to the monitoring extension via the monitoring signal main cable.

6. A method for locating breakpoints based on a buried pipeline warning tape, characterized in that: The breakpoint positioning method based on the buried pipeline warning tape is implemented by using the breakpoint positioning system based on the buried pipeline warning tape according to any one of claims 1 to 5; The breakpoint positioning method based on the buried pipeline warning tape includes: Acquire information data; the information data includes: signal data transmitted by the warning tape and location information of the monitoring extension; the signal data is determined based on the positioning grid sensor signal cable in the warning tape; the signal data is: a path signal or a disconnection signal; When the signal data is a circuit-breaking signal, the breakpoint coordinates are determined according to the set layout of the double-core flexible conductor using the equivalent circuit method or the induction coil principle; The breakpoint is located according to the position information and the breakpoint coordinates.

7. The method for locating breakpoints based on the warning tape of an underground pipeline according to claim 6, characterized in that: The equivalent circuit method includes: a parallel resistance method and a switch patrol method.

8. The method for locating breakpoints based on the warning tape of an underground pipeline according to claim 7, characterized in that: The process of determining the breakpoint coordinates using the parallel resistance method specifically includes: When the warning tape adopts a grid-shaped network structure, the resistance value corresponding to the double-core flexible wire is determined according to Ohm's law; Determine a signal acquisition coordinate matrix according to the resistance value and parameter data of the warning band; the parameter data includes: length, width and grid side length of a grid network structure; The breakpoint coordinates are determined according to the signal acquisition coordinate matrix.

9. The method for locating breakpoints based on the warning tape of an underground pipeline according to claim 8, characterized in that: The process of determining the breakpoint coordinates using the switch patrol method specifically includes: When the warning tape adopts a grid network structure, the double-core flexible wire is tested based on an on-off control switch of an external device to obtain a test result; the test result includes a conduction state; Determining a test acquisition coordinate matrix according to the test results and the parameter data; The breakpoint coordinates are determined according to the test acquisition coordinate matrix.

10. The method for locating breakpoints based on the warning tape of an underground pipeline according to claim 8, characterized in that: The process of determining the breakpoint coordinates using the induction coil principle specifically includes: When the warning strip adopts a central axis symmetrical structure, the vector magnetic potential is determined based on electromagnetic field theory; Based on Faraday's law of electromagnetic induction, determining the induced electric field according to the vector magnetic potential; determining a scalar electric potential based on the induced electric field; Determining a potential coordinate matrix according to the scalar potential and the parameter data; The breakpoint coordinates are determined according to the potential coordinate matrix.

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