Breakpoint detection method and device of OPPC cable, terminal equipment and storage medium

Abstract

The invention discloses a breakpoint detection method and device for an OPPC cable, terminal equipment and a storage medium, and the method comprises the steps: obtaining cable parameters of the OPPC cable; determining a signal generation parameter of a signal generator according to the cable parameter; controlling a signal generator to generate a corresponding test signal according to the signal generation parameter, injecting the test signal into the OPPC cable, and then obtaining a feedback signal generated after the test signal is injected into the OPPC cable; extracting a signal link length of the feedback signal, and comparing the signal link length with a preset signal link length reference value; and under the condition that the signal link length is smaller than the signal link length reference value, determining that the sensing optical fiber in the OPPC cable has a breakpoint. According to the embodiment of the invention, the accuracy of breakpoint detection of the OPPC cable can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and in particular to a breakpoint detection method, device, terminal equipment and storage medium for an OPPC cable. Background Art

[0002] Optical Phase Conductor (OPPC) is a new type of special power optical cable, which is a cable that combines optical fiber units in the phase line and has the dual functions of phase line and communication. Since OPPC cables are operated in complex natural environments for a long time, they are prone to cable breakage in windy weather, cable swaying and other complex working conditions. In order to ensure that when OPPC cables are broken, they can be repaired quickly to restore the working capacity of OPPC cables, it is very important to quickly and accurately detect the breakpoint.

[0003] The traditional OPPC cable breakpoint detection method is generally based on the optical time domain reflectometry technology to perform online detection of the breakpoint. Specifically, based on the reflection phenomenon generated when the pulse signal propagates in the cable, the relationship between the propagation speed in the cable and the time delay of the reflected signal can be used to infer the breakpoint in the cable. However, it has the following technical problems: For example, the OPPC cable is exposed to a complex atmospheric environment and is affected by weather factors such as wind, snow, and rain, which will cause a certain degree of bending and deviation. Therefore, the breakpoint position determined based on the optical time domain reflectometry technology is inaccurate. Summary of the invention

[0004] The embodiments of the present invention provide a method, an apparatus, a terminal device and a storage medium for detecting a breakpoint of an OPPC cable, which can improve the accuracy of detecting a breakpoint of an OPPC cable.

[0005] An embodiment of the present invention provides a breakpoint detection method for an OPPC cable, comprising: obtaining cable parameters of the OPPC cable; determining signal generation parameters of a signal generator according to the cable parameters; controlling the signal generator to generate a corresponding test signal according to the signal generation parameters, and injecting the test signal into the OPPC cable, and then obtaining a feedback signal generated after the test signal is injected into the OPPC cable;

[0006] Extracting a signal link length of the feedback signal, and comparing the signal link length with a preset signal link length reference value;

[0007] When the signal link length is less than the signal link length reference value, it is determined that a breakpoint exists in the sensing optical fiber in the OPPC cable.

[0008] Furthermore, the sensing optical fiber is provided with a plurality of measuring points;

[0009] After determining that there is a breakpoint in the sensing optical fiber of the OPPC cable, the method further includes:

[0010] Determining, according to the signal link length, a target measuring point corresponding to the feedback signal when the sensing optical fiber disappears;

[0011] The position of the target measuring point is used as the breakpoint position of the breakpoint.

[0012] Furthermore, after determining the breakpoint position of the breakpoint, the method further includes:

[0013] Controlling the detection device to transmit detection signals at at least two detection positions different from the breakpoint position, and then receiving feedback signals corresponding to the detection signals at the breakpoint position;

[0014] Determine the target distance between each detection position and the breakpoint position according to each feedback signal;

[0015] For each detection position, a corresponding spherical surface is constructed with the detection position as the sphere center and the corresponding target distance as the radius;

[0016] The positions of the intersection points of the spheres are used as the breakpoint positions after the breakpoints are updated.

[0017] Further, determining the target distance between each detection position and the breakpoint position according to each feedback signal includes:

[0018] For each feedback signal, taking the detection signal corresponding to the feedback signal as a reference signal;

[0019] The feedback signal is sampled, and the reference signal is compared with the sampled feedback signal in frequency to obtain a phase difference between the feedback signal and the reference signal;

[0020] Determining the phase information of the feedback signal according to the phase difference and the phase information of the reference signal;

[0021] Performing cross-correlation analysis on the phase information of the feedback signal and the phase information of the reference signal, and normalizing the cross-correlation result to generate a normalized cross-correlation curve;

[0022] Obtaining the maximum value position of the normalized cross-correlation curve, and determining the delay amount according to the maximum value position;

[0023] The propagation time is determined according to the delay amount, and then the target distance between the corresponding detection position and the breakpoint position is determined according to the propagation time.

[0024] Furthermore, the OPPC cable is also provided with a communication conductor;

[0025] The breakpoint detection method further includes:

[0026] Connecting high voltage alternating current to the communication wire;

[0027] Acquire an infrared image of the communication wire, and determine whether there is a wire point in the infrared image whose brightness is greater than a brightness threshold;

[0028] When there is a wire point with brightness greater than a brightness threshold in the infrared image, the wire point is used as a breakpoint of the communication wire.

[0029] Furthermore, before extracting the signal link length of the feedback signal, the method further includes:

[0030] The OPPC cable is divided into a first OPPC sub-cable and a second OPPC sub-cable, wherein the second OPPC sub-cable is far away from the injection end of the test signal; the feedback signal includes a first feedback sub-signal corresponding to the first OPPC sub-cable and a second feedback sub-signal corresponding to the second OPPC sub-cable;

[0031] determining a signal attenuation amount of the second feedback sub-signal relative to the first feedback sub-signal;

[0032] Determine a target gain coefficient according to the signal attenuation;

[0033] The second feedback sub-signal is amplified according to the target gain coefficient.

[0034] Based on the above method embodiment, the present invention provides a corresponding device embodiment;

[0035] Another embodiment of the present invention provides a breakpoint detection device for an OPPC cable, comprising: a feedback signal acquisition module, a signal link length comparison module, and a breakpoint determination module;

[0036] The feedback signal acquisition module is used to acquire the cable parameters of the OPPC cable; determine the signal generation parameters of the signal generator according to the cable parameters; control the signal generator to generate a corresponding test signal according to the signal generation parameters, and inject the test signal into the OPPC cable, and then acquire the feedback signal generated after the test signal is injected into the OPPC cable;

[0037] The signal link length comparison module is used to extract the signal link length of the feedback signal and compare the signal link length with a preset signal link length reference value;

[0038] The breakpoint determination module is used to determine whether a breakpoint exists in the sensing optical fiber in the OPPC cable when the signal link length is less than the signal link length reference value.

[0039] Further, the sensing optical fiber is provided with a plurality of measuring points, and the breakpoint detection device of the OPPC cable further comprises: a breakpoint position determination module;

[0040] The breakpoint position determination module is used to determine the target measuring point corresponding to the feedback signal when the sensing optical fiber disappears according to the signal link length;

[0041] The position of the target measuring point is used as the breakpoint position of the breakpoint.

[0042] Based on the above method embodiment, the present invention provides a corresponding terminal device embodiment;

[0043] Another embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for detecting a breakpoint of an OPPC cable as described in any one of the embodiments is implemented.

[0044] Based on the above method embodiment, the present invention provides a storage medium embodiment;

[0045] Another embodiment of the present invention provides a storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute a breakpoint detection method for an OPPC cable as described in any one of the above embodiments.

[0046] The following beneficial effects are achieved by implementing the present invention:

[0047] The present invention discloses a breakpoint detection method, device, terminal equipment and storage medium of an OPPC cable, wherein the method obtains a feedback signal generated after injecting a test signal into the OPPC cable; extracts the signal link length of the feedback signal, and compares the signal link length with a preset signal link length reference value; and determines that a breakpoint exists in the sensing optical fiber in the OPPC cable when the signal link length is less than the signal link length reference value. Since the bending and deviation of the cable do not affect the signal link length of the feedback signal, the present invention detects whether a breakpoint exists based on the signal link length of the feedback signal. When the OPPC cable is bent and deflected, it is still possible to accurately detect whether the OPPC cable has a breakpoint, thereby improving the accuracy of breakpoint detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 The present invention is a flowchart of a method for detecting breakpoints of an OPPC cable provided in accordance with an embodiment of the present invention.

[0049] Figure 2 It is a structural schematic diagram of a breakpoint detection method for an OPPC cable provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] like Figure 1 As shown, a method for detecting a breakpoint of an OPPC cable provided by an embodiment of the present invention includes:

[0058] S1. Obtain the cable parameters of the OPPC cable; determine the signal generation parameters of the signal generator according to the cable parameters; control the signal generator to generate a corresponding test signal according to the signal generation parameters, and inject the test signal into the OPPC cable, and then obtain the feedback signal generated after the test signal is injected into the OPPC cable.

[0059] Specifically, by obtaining the cable characteristics of the OPPC cable, the signal generation parameters of the signal generator are determined to ensure the matching degree between the test signal and the OPPC cable and improve the detection accuracy.

[0060] It should be noted that the feedback signal includes sub-signals corresponding to multiple sampling points. When there is a breakpoint in the OPPC cable, the sampling point after the breakpoint will not generate a feedback signal. At this time, the length of the signal link where the breakpoint occurs will be shorter than the length of the signal link where no breakpoint occurs. Therefore, the breakpoint can be detected based on the signal link length.

[0061] S2. Extract the signal link length of the feedback signal, and compare the signal link length with a preset signal link length reference value.

[0062] Specifically, the above-mentioned preset signal link length reference value is the signal link length when no breakpoint occurs in the OPPC cable.

[0063] S3. When the signal link length is less than the signal link length reference value, determine that a breakpoint exists in the sensing optical fiber in the OPPC cable.

[0064] Specifically, the signal link length of the current feedback signal is compared with the signal link length reference value. If the signal link length of the feedback signal is less than the signal link length reference value, it indicates that there is a breakpoint in the sensing optical fiber in the OPPC cable. Otherwise, it indicates that there is no breakpoint in the sensing optical fiber in the OPPC cable.

[0065] In a preferred embodiment, the sensing optical fiber is provided with a plurality of measuring points;

[0066] After determining that there is a breakpoint in the sensing optical fiber in the OPPC cable, the method further includes: determining, based on the signal link length, a target measuring point corresponding to the feedback signal when the sensing optical fiber disappears; and using the position of the target measuring point as the breakpoint position of the breakpoint.

[0067] Specifically, the sensing optical fiber is provided with a plurality of measuring points, and the distance between each measuring point and the test signal injection end of the OPPC cable is calibrated in advance. The target measuring point corresponding to the feedback signal when the sensing optical fiber disappears is determined according to the signal link length, and then the position of the target measuring point in the OPPC cable can be determined according to the distance between the target measuring point and the test signal injection end of the OPPC cable, that is, the above-mentioned breakpoint position is obtained.

[0068] In a preferred embodiment, after determining the breakpoint position of the breakpoint, the method further includes:

[0069] Controlling the detection device to transmit detection signals at at least two detection positions different from the breakpoint position, and then receiving feedback signals corresponding to the detection signals at the breakpoint position;

[0070] Determine the target distance between each detection position and the breakpoint position according to each feedback signal;

[0071] For each detection position, a corresponding spherical surface is constructed with the detection position as the sphere center and the corresponding target distance as the radius;

[0072] The positions of the intersection points of the spheres are used as the updated breakpoint positions.

[0073] To further improve the accuracy of the breakpoint position determination, in this embodiment, the detection signal is emitted by the control signal emitting device at two positions different from the initial breakpoint position, and the distance between the two detection positions and the initial breakpoint position is obtained according to the emitted detection signal, and then the corresponding spherical surface is constructed with the detection position as the sphere center and the corresponding target distance as the radius, and the intersection position of the two spherical surfaces is used as the updated breakpoint position. In this way, the problem of inaccurate initial breakpoint position caused by external disturbance can be eliminated, and the accuracy of breakpoint position detection can be improved.

[0074] It is understandable that in the present invention, only one signal emitting device may be provided, and the position of the signal emitting device may be adjusted to emit a transmission detection signal at two positions, or signal emitting devices may be provided at at least two positions to emit a transmission detection signal.

[0075] In a preferred embodiment, determining the target distance between each detection position and the breakpoint position according to each feedback signal includes:

[0076] For each feedback signal, taking the detection signal corresponding to the feedback signal as a reference signal;

[0077] The feedback signal is sampled, and the reference signal is compared with the sampled feedback signal in frequency to obtain a phase difference between the feedback signal and the reference signal;

[0078] Determining the phase information of the feedback signal according to the phase difference and the phase information of the reference signal;

[0079] Performing cross-correlation analysis on the phase information of the feedback signal and the phase information of the reference signal, and normalizing the cross-correlation result to generate a normalized cross-correlation curve;

[0080] Obtaining the maximum value position of the normalized cross-correlation curve, and determining the delay amount according to the maximum value position;

[0081] The propagation time is determined according to the delay amount, and then the target distance between the corresponding detection position and the breakpoint position is determined according to the propagation time.

[0082] In addition, when the length of the OPPC cable is long, the test signal will attenuate along the length direction of the OPPC cable, that is, the signal strength will decrease. This will cause the signal strength of the feedback signal to decrease, thereby causing inaccurate judgment of the signal link length and inaccurate judgment of the breakpoint of the OPPC cable. In order to solve the above technical problems, in some embodiments of the present invention, before extracting the signal link length of the feedback signal, the following is further included:

[0083] The OPPC cable is divided into a first OPPC sub-cable and a second OPPC sub-cable, wherein the second OPPC sub-cable is far away from the injection end of the test signal; the feedback signal includes a first feedback sub-signal corresponding to the first OPPC sub-cable and a second feedback sub-signal corresponding to the second OPPC sub-cable;

[0084] Determine a signal attenuation amount of the second feedback sub-signal relative to the first feedback sub-signal; determine a target gain coefficient according to the signal attenuation amount; and amplify the second feedback sub-signal according to the target gain coefficient.

[0085] By dividing the OPPC cable into a first OPPC sub-cable and a second OPPC sub-cable, and setting a target gain coefficient for the feedback sub-signal corresponding to the second OPPC sub-cable, the signal strength of the second feedback sub-signal is enhanced, ensuring that the second feedback sub-signal will not be distorted or lose information due to attenuation during transmission, and the signal quality of the second feedback sub-signal can be significantly improved, thereby ensuring the accuracy of breakpoint detection.

[0086] It should be noted that the target gain factor can ensure signal amplification while maintaining the original waveform and characteristics, and will not adversely affect breakpoint detection.

[0087] It should also be noted that the division of cable length is not limited to two sections, but can also be divided into multiple sections, and a gain coefficient is applied to each section except the first section, or a gain coefficient is applied to each section based on the attenuation intensity to ensure accurate acquisition of the signal link, thereby ensuring the accuracy of breakpoint detection.

[0088] As can be seen from the above description, the OPPC cable is a traditional phase line in which the sensing optical fiber is combined with the communication wire. The above embodiments can only detect the breakpoint of the sensing optical fiber, but in actual engineering applications, it is necessary to accurately identify whether it is a sensing optical fiber breakpoint or a communication wire breakpoint to improve maintenance efficiency. Considering the above actual engineering needs, in some embodiments of the present invention, the OPPC cable is also provided with a communication wire;

[0089] The breakpoint detection method further includes:

[0090] Connecting high voltage alternating current to the communication wire;

[0091] Acquire an infrared image of the communication wire, and determine whether there is a wire point in the infrared image whose brightness is greater than a brightness threshold;

[0092] When there is a wire point with brightness greater than a brightness threshold in the infrared image, the wire point is used as a breakpoint of the communication wire.

[0093] The embodiment of the present invention utilizes that when a communication wire has a breakpoint and a high voltage AC is passed through, a large amount of heat will be generated at the breakpoint, which is highlighted in the infrared image. Based on this feature, the breakpoint of the communication wire can be detected based on the infrared image.

[0094] It should be understood that: the breakpoint detection method of the OPPC cable also includes: determining the breakpoint position of the wire based on the infrared image to locate the breakpoint of the communication wire.

[0095] Based on the above method embodiment, the present invention provides a corresponding device embodiment;

[0096] like Figure 2 As shown, an OPPC cable breakpoint detection device provided by an embodiment of the present invention includes: a feedback signal acquisition module, a signal link length comparison module and a breakpoint determination module;

[0097] The feedback signal acquisition module is used to acquire the cable parameters of the OPPC cable; determine the signal generation parameters of the signal generator according to the cable parameters; control the signal generator to generate a corresponding test signal according to the signal generation parameters, and inject the test signal into the OPPC cable, and then acquire the feedback signal generated after the test signal is injected into the OPPC cable;

[0098] The signal link length comparison module is used to extract the signal link length of the feedback signal and compare the signal link length with a preset signal link length reference value;

[0099] The breakpoint determination module is used to determine whether a breakpoint exists in the sensing optical fiber in the OPPC cable when the signal link length is less than the signal link length reference value.

[0100] In a preferred embodiment, the sensing optical fiber is provided with a plurality of measuring points, and the breakpoint detection device of the OPPC cable further comprises: a breakpoint position determination module;

[0101] The breakpoint position determination module is used to determine the target measuring point corresponding to the feedback signal when the sensing optical fiber disappears according to the signal link length;

[0102] The position of the target measuring point is used as the breakpoint position of the breakpoint.

[0103] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0104] Those skilled in the art can clearly understand that for the sake of convenience and brevity, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0105] Another preferred embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, a breakpoint detection method for an OPPC cable as described in any one of the above embodiments is implemented.

[0106] The terminal device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0107] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire terminal device.

[0108] The memory can be used to store the computer program, and the processor realizes various functions of the terminal device by running or executing the computer program stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required for a function, etc.; the data storage area can store data created according to the use of the mobile phone, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0109] Another preferred embodiment of the present invention provides a storage medium, which is a computer-readable storage medium. The computer program is stored in the computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned method embodiments can be implemented.

[0110] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0111] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for detecting breakpoints of an OPPC cable, characterized in that: include: Get the cable parameters of OPPC cable; Determining signal generation parameters of the signal generator according to the cable parameters; According to the signal generation parameter, the signal generator is controlled to generate a corresponding test signal, and the test signal is injected into the OPPC cable, and then a feedback signal generated after the test signal is injected into the OPPC cable is obtained; Extracting a signal link length of the feedback signal, and comparing the signal link length with a preset signal link length reference value; When the signal link length is less than the signal link length reference value, it is determined that a breakpoint exists in the sensing optical fiber in the OPPC cable.

2. The breakpoint detection method of the OPPC cable according to claim 1, characterized in that: The sensing optical fiber is provided with a plurality of measuring points; After determining that there is a breakpoint in the sensing optical fiber of the OPPC cable, the method further includes: Determining, according to the signal link length, a target measuring point corresponding to the feedback signal when the sensing optical fiber disappears; The position of the target measuring point is used as the breakpoint position of the breakpoint.

3. The breakpoint detection method of the OPPC cable as claimed in claim 2, characterized in that: After determining the breakpoint position of the breakpoint, the method further includes: Controlling the detection device to transmit detection signals at at least two detection positions different from the breakpoint position, and then receiving feedback signals corresponding to the detection signals at the breakpoint position; Determine the target distance between each detection position and the breakpoint position according to each feedback signal; For each detection position, a corresponding spherical surface is constructed with the detection position as the sphere center and the corresponding target distance as the radius; The positions of the intersection points of the spheres are used as the updated breakpoint positions.

4. The breakpoint detection method of the OPPC cable as claimed in claim 3, characterized in that: The step of determining the target distance between each detection position and the breakpoint position according to each feedback signal includes: For each feedback signal, taking the detection signal corresponding to the feedback signal as a reference signal; The feedback signal is sampled, and the reference signal is compared with the sampled feedback signal in frequency to obtain a phase difference between the feedback signal and the reference signal; Determining the phase information of the feedback signal according to the phase difference and the phase information of the reference signal; Performing cross-correlation analysis on the phase information of the feedback signal and the phase information of the reference signal, and normalizing the cross-correlation result to generate a normalized cross-correlation curve; Obtaining the maximum value position of the normalized cross-correlation curve, and determining the delay amount according to the maximum value position; The propagation time is determined according to the delay amount, and then the target distance between the corresponding detection position and the breakpoint position is determined according to the propagation time.

5. The method for detecting breakpoints of an OPPC cable as claimed in claim 4, characterized in that: The OPPC cable is also provided with a communication conductor; The breakpoint detection method further includes: Connecting high voltage alternating current to the communication wire; Acquire an infrared image of the communication wire, and determine whether there is a wire point in the infrared image whose brightness is greater than a brightness threshold; When there is a wire point with brightness greater than a brightness threshold in the infrared image, the wire point is used as a breakpoint of the communication wire.

6. The method for detecting breakpoints of an OPPC cable as claimed in claim 5, characterized in that: Before extracting the signal link length of the feedback signal, the method further includes: The OPPC cable is divided into a first OPPC sub-cable and a second OPPC sub-cable, wherein the second OPPC sub-cable is far away from the injection end of the test signal; the feedback signal includes a first feedback sub-signal corresponding to the first OPPC sub-cable and a second feedback sub-signal corresponding to the second OPPC sub-cable; determining a signal attenuation amount of the second feedback sub-signal relative to the first feedback sub-signal; Determine a target gain coefficient according to the signal attenuation; The second feedback sub-signal is amplified according to the target gain coefficient.

7. A breakpoint detection device for an OPPC cable, characterized in that: include: Feedback signal acquisition module, signal link length comparison module and breakpoint determination module; The feedback signal acquisition module is used to obtain the cable parameters of the OPPC cable; Determining a signal generation parameter of a signal generator according to the cable parameter; controlling the signal generator to generate a corresponding test signal according to the signal generation parameter, and injecting the test signal into the OPPC cable, and then obtaining a feedback signal generated after the test signal is injected into the OPPC cable; The signal link length comparison module is used to extract the signal link length of the feedback signal and compare the signal link length with a preset signal link length reference value; The breakpoint determination module is used to determine whether a breakpoint exists in the sensing optical fiber in the OPPC cable when the signal link length is less than the signal link length reference value.

8. The breakpoint detection device for an OPPC cable as claimed in claim 7, characterized in that: The sensing optical fiber is provided with a plurality of measuring points, and the breakpoint detection device of the OPPC cable further comprises: a breakpoint position determination module; The breakpoint position determination module is used to determine the target measuring point corresponding to the feedback signal when the sensing optical fiber disappears according to the signal link length; The position of the target measuring point is used as the breakpoint position of the breakpoint.

9. A terminal device, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for detecting a breakpoint of an OPPC cable as claimed in any one of claims 1 to 7 is implemented.

10. A storage medium, characterized in that: The storage medium includes a stored computer program, wherein when the computer program is executed, the device where the storage medium is located is controlled to execute a breakpoint detection method for an OPPC cable as claimed in any one of claims 1 to 7.

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