Fault point location determination method and system for pipeline accompanying optical cable

Abstract

The invention provides a fault point location determination method and system for a pipeline accompanying optical cable, and relates to the technical field of optical cable measurement. The method comprises the following steps: acquiring a first length of an accompanying optical cable between a fault point of the accompanying optical cable of a target pipeline and an optical time domain reflectometer through the optical time domain reflectometer; then, a target test point is determined according to the vibration signals of the multiple first test points, a fault point location is determined according to vibration signals of multiple second test points arranged in a target area where the target test point is located, and the fault point location is one of the multiple second test points; the intensity of the vibration signal corresponding to the fault point location is the maximum value in the intensity of the vibration signals corresponding to the plurality of second test points. According to the method provided by the invention, the actual position corresponding to the fault point of the optical cable can be rapidly and accurately determined, and maintenance personnel can find the corresponding fault point after excavating the fault point, so that rapid maintenance is realized, the maintenance cost is reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical cable measurement, and in particular to a method and system for determining a fault point of an optical cable traveling along a pipeline. Background Art

[0002] At present, optical time-domain reflectometer (OTDR) is widely used in the maintenance of accompanying optical cables. The optical time-domain reflectometer is based on the principle of backward Rayleigh scattering and Fresnel reflection during the transmission of light in optical fiber. When the light emitted by the laser propagates in the optical fiber, the collision between the photon and the fiber core lattice will produce a scattering effect due to the inhomogeneity of the optical fiber material.

[0003] When there is an unconventional energy loss point in the optical fiber link, the backscattered light characteristics will change significantly. The transmission attenuation fault point can be located by detecting the magnitude of the backscattered light energy. When there is a breakpoint in the optical fiber link, the light will produce Fresnel reflection at the breakpoint, and the optical fiber breakpoint can be located by detecting the optical signal.

[0004] Usually, the fault location of the accompanying optical cable detected by OTDR is characterized by the length of the optical fiber. Due to the presence of splicing boxes and cable reels during the laying of the optical cable, the optical fiber length is not equal to the corresponding pipeline mileage. Therefore, maintenance personnel cannot accurately determine the actual ground location corresponding to the optical cable fault point, resulting in high maintenance costs and low maintenance efficiency. Summary of the invention

[0005] The embodiments of the present invention provide a method and system for determining the fault point of a pipeline accompanying optical cable, which can quickly and accurately determine the actual ground position corresponding to the optical cable fault point, thereby reducing maintenance costs and improving maintenance efficiency.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, a method for determining a fault point of a companion optical cable of a pipeline is provided, the method comprising: obtaining fault point location information of the companion optical cable of a target pipeline through an optical time domain reflectometer, the fault point location information comprising a first length of the companion optical cable between the fault point of the companion optical cable and the optical time domain reflectometer, the optical time domain reflectometer being connected to one end of the companion optical cable; in response to a user's vibration operation at a plurality of first test points, obtaining a vibration signal corresponding to each first test point through the optical time domain reflectometer, wherein the plurality of first test points are arranged above the target pipeline; determining the test point location information according to the vibration signal corresponding to each first test point, the test point location information Including the second length of the accompanying optical cable between each first test point and the optical time domain reflectometer; determining the first test point whose difference between the second length and the first length is less than a preset threshold as the target test point; in response to the user's vibration operation at multiple second test points, obtaining the vibration signal corresponding to each second test point through the optical time domain reflectometer, wherein each second test point is set in the target area where the target test point is located; determining the fault point according to the vibration signal corresponding to each second test point, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

[0008] In a possible implementation of the first aspect, in response to the user's vibration operation at multiple second test points, before obtaining the vibration signal corresponding to each second test point through an optical time domain reflectometer in response to the user's vibration operation at multiple second test points, the method also includes: setting multiple second test points in a target area where the target test point is located, the target area being an area centered on the target test point and having an area of ​​a preset value.

[0009] In a possible implementation of the first aspect, a plurality of second test points are set in a target area where a target test point is located, including: obtaining setting position information of an accompanying optical cable in the target area through a Radi device, the setting position information including the latitude and longitude coordinates and a setting depth of the accompanying optical cable; and setting a plurality of second test points according to the setting position information of the accompanying optical cable, wherein each of the plurality of second test points is respectively set above the accompanying optical cable.

[0010] In a possible implementation of the first aspect, the Radio device includes a transmitter and a receiver; the transmitter is connected to the accompanying optical cable, the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

[0011] In a possible implementation of the first aspect, the method further includes: when the difference between the target pipeline length and the accompanying optical cable length between the two first test points is greater than a preset threshold, determining the two first test points as cable winding points; obtaining the setting position information of the accompanying optical cable between the two cable winding points through the Radi device; and determining the area where the difference between the length of the accompanying optical cable and the length of the target pipeline is greater than the preset threshold as the cable winding area.

[0012] In a possible implementation of the first aspect, the method further includes: in response to a user's vibration operation at a first intersection point and a second intersection point between a boundary of the cable winding area and the target pipeline, obtaining vibration signals corresponding to the first intersection point and the second intersection point; determining the length of the companion optical cable between the first intersection point and the optical time domain reflectometer according to the vibration signal corresponding to the first intersection point; determining the length of the companion optical cable between the second intersection point and the optical time domain reflectometer according to the vibration signal corresponding to the second intersection point; and determining the difference between the length of the companion optical cable between the first intersection point and the optical time domain reflectometer and the length of the companion optical cable between the second intersection point and the optical time domain reflectometer as the cable winding length corresponding to the cable winding area.

[0013] The beneficial effects of the present invention are as follows: the present invention obtains the first length of the accompanying optical cable between the fault point of the accompanying optical cable of the target pipeline and the optical time domain reflectometer through the optical time domain reflectometer; then the target test point is determined according to the vibration signals of the multiple first test points, and the fault point is determined according to the vibration signals of the multiple second test points set in the target area where the target test point is located, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points. The method provided by the present invention can quickly and accurately determine the actual position corresponding to the optical cable fault point, and can enable maintenance personnel to find the corresponding fault point after excavating the fault point, thereby realizing rapid maintenance, thereby reducing maintenance costs and improving maintenance efficiency.

[0014] In a second aspect, an embodiment of the present invention provides a fault point determination system for a pipeline accompanying optical cable, the system comprising: an acquisition unit, used to acquire the fault point location information of the accompanying optical cable of the target pipeline through an optical time domain reflectometer, the fault point location information includes a first length of the accompanying optical cable between the fault point of the accompanying optical cable and the optical time domain reflectometer, the optical time domain reflectometer being connected to one end of the accompanying optical cable; the acquisition unit, further used to respond to a user's vibration operation at a plurality of first test points, to acquire a vibration signal corresponding to each first test point through the optical time domain reflectometer, wherein the plurality of first test points are arranged above the target pipeline; a processing unit, used to determine the test point location information according to the vibration signal corresponding to each first test point, the test point location The information includes the second length of the accompanying optical cable between each first test point and the optical time domain reflectometer; the processing unit is also used to determine the first test point whose difference between the second length and the first length is less than a preset threshold as a target test point; the acquisition unit is also used to respond to the user's vibration operation at multiple second test points, and obtain the vibration signal corresponding to each second test point through the optical time domain reflectometer, wherein each second test point is set in a target area where the target test point is located; the processing unit is also used to determine the fault point according to the vibration signal corresponding to each second test point, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

[0015] In a possible implementation manner of the second aspect, the processing unit is further configured to set a plurality of second test points in a target area where the target test point is located, where the target area is an area centered on the target test point and having an area of ​​a preset value.

[0016] In a possible implementation of the second aspect, the processing unit is specifically used to: obtain the setting position information of the companion optical cable in the target area through the Radi device, the setting position information including the latitude and longitude coordinates and the setting depth of the companion optical cable; set a plurality of second test points according to the setting position information of the companion optical cable, and each of the plurality of second test points is respectively set above the companion optical cable.

[0017] In a possible implementation of the second aspect, the radiodetection device includes a transmitter and a receiver; the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

[0018] In a third aspect, an electronic device is provided, the electronic device comprising a memory and one or more processors; the memory is coupled to the processor; wherein a computer program code is stored in the memory, and the computer program code comprises computer instructions, and when the computer instructions are executed by the processor, the electronic device executes a method for determining a fault point of a pipeline accompanying optical cable as in any implementation of the first aspect.

[0019] In a fourth aspect, a computer-readable storage medium is provided, comprising computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes a method for determining a fault point of a pipeline accompanying optical cable as in any implementation of the first aspect.

[0020] In a fifth aspect, a computer program product is provided. When the computer program product is run on a computer, the computer is caused to execute the method for determining a fault point of a pipeline accompanying optical cable in any implementation of the first aspect.

[0021] It can be understood that the beneficial effects that can be achieved by the fault point determination system for pipeline accompanying optical cables described in the second aspect provided above, the electronic device described in the third aspect, the computer-readable storage medium described in the fourth aspect, and the computer program product described in the fifth aspect can refer to the beneficial effects in the first aspect and any possible design method thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention;

[0023] Figure 2 A flow chart of a method for determining a fault point of a pipeline accompanying optical cable according to an embodiment of the present invention;

[0024] Figure 3 A flow chart of another method for determining a fault point of a pipeline accompanying optical cable according to an embodiment of the present invention;

[0025] Figure 4 A flow chart of another method for determining a fault point of a pipeline accompanying optical cable according to an embodiment of the present invention;

[0026] Figure 5 A flow chart of another method for determining a fault point of a pipeline accompanying optical cable according to an embodiment of the present invention;

[0027] Figure 6 The present invention is a schematic diagram of the hardware structure of a determination system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solution in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention. Among them, in the description of the present invention, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present invention is only a kind of association relationship describing the associated objects, indicating that there can 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, where A and B can be singular or plural. And, in the description of the present invention, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0029] In addition, in order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", etc. are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art can understand that the words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not necessarily limit the difference.

[0030] Meanwhile, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way for easy understanding.

[0031] At present, optical time-domain reflectometer (OTDR) is widely used in the maintenance of accompanying optical cables. The optical time-domain reflectometer is based on the principle of backward Rayleigh scattering and Fresnel reflection during the transmission of light in optical fiber. When the light emitted by the laser propagates in the optical fiber, the collision between the photon and the fiber core lattice will produce a scattering effect due to the inhomogeneity of the optical fiber material.

[0032] When there is an unconventional energy loss point in the optical fiber link, the backscattered light characteristics will change significantly. The transmission attenuation fault point can be located by detecting the magnitude of the backscattered light energy. When there is a breakpoint in the optical fiber link, the light will produce Fresnel reflection at the breakpoint, and the optical fiber breakpoint can be located by detecting the optical signal.

[0033] Usually, the fault location of the accompanying optical cable detected by OTDR is characterized by the length of the optical fiber. Due to the presence of splicing boxes and cable reels during the laying of the optical cable, the optical fiber length is not equal to the corresponding pipeline mileage. Therefore, maintenance personnel cannot accurately determine the actual ground location corresponding to the optical cable fault point, resulting in high maintenance costs and low maintenance efficiency.

[0034] In view of this, an embodiment of the present invention provides a method for determining the fault point of a companion optical cable of a pipeline, the method comprising: obtaining the fault point location information of the companion optical cable of the target pipeline through an optical time domain reflectometer, the fault point location information including a first length of the companion optical cable between the fault point of the companion optical cable and the optical time domain reflectometer, the optical time domain reflectometer being connected to one end of the companion optical cable; in response to a user's vibration operation at a plurality of first test points, obtaining a vibration signal corresponding to each first test point through the optical time domain reflectometer, wherein the plurality of first test points are arranged above the target pipeline; determining the test point location information according to the vibration signal corresponding to each first test point, the test point location information The information includes a second length of the accompanying optical cable between each first test point and the optical time domain reflectometer; determining a first test point whose difference between the second length and the first length is less than a preset threshold as a target test point; obtaining a vibration signal corresponding to each second test point through the optical time domain reflectometer in response to a user's vibration operation at multiple second test points, wherein each second test point is set in a target area where the target test point is located; determining a fault point according to the vibration signal corresponding to each second test point, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

[0035] The embodiment of the present invention obtains the first length of the accompanying optical cable between the fault point of the accompanying optical cable of the target pipeline and the optical time domain reflectometer through an optical time domain reflectometer; then the target test point is determined according to the vibration signals of the multiple first test points, and the fault point is determined according to the vibration signals of the multiple second test points set in the target area where the target test point is located, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points. The method provided by the embodiment of the present invention can quickly and accurately determine the actual position corresponding to the optical cable fault point, and can enable maintenance personnel to find the corresponding fault point after excavating the fault point, thereby realizing rapid maintenance, thereby reducing maintenance costs and improving maintenance efficiency.

[0036] In some embodiments, the method for determining the fault location of a pipeline accompanying optical cable provided in an embodiment of the present invention may be performed by a fault location determination system 100 for a pipeline accompanying optical cable (hereinafter referred to as determination system 100). As an example, the determination system 100 may be any electronic device 200 with data processing capability, such as a general-purpose computer, a personal computer, a laptop computer, a switch, or a tablet computer, etc. The specific implementation of the determination system 100 is not limited here.

[0037] Figure 1 The hardware structure diagram of the electronic device provided by the embodiment of the present invention is shown. The electronic device 200 includes a processor 210, a memory 220 and a communication interface 230.

[0038] The processor 210 may include one or more processing cores. The processor 210 uses various interfaces and lines to connect various parts in the electronic device 200, and executes various functions of the electronic device 200 and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 220, and calling data stored in the memory 220. Optionally, the processor 210 can be implemented in at least one hardware form of a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA).

[0039] The memory 220 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 220 includes a non-transient computer-readable storage medium. The memory 220 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 220 may include a program storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a data acquisition function, a model training function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.

[0040] The communication interface 230 is used to communicate with other devices, equipment or communication networks, such as data storage devices, image processing equipment or Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.

[0041] In physical implementation, the above-mentioned components (such as processor 210, memory 220 and communication interface 230) can be components in the same device (such as a laptop). Alternatively, at least two of the components can be set in the same device, that is, as different components in one device, similar to the deployment mode of devices or components in a distributed system.

[0042] It is to be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device 200. In other embodiments of the present invention, the electronic device 200 may include more or fewer components than those illustrated, or combine certain components, or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0043] The following describes a method for determining a fault point of a pipeline accompanying optical cable provided by an embodiment of the present invention in conjunction with the accompanying drawings.

[0044] Figure 2 A flowchart of a method for determining a fault point of a pipeline accompanying optical cable provided in an embodiment of the present invention. Optionally, the method may be performed by Figure 1 The method is executed by the electronic device 200 of the hardware structure shown, that is, by the determination system 100. The method may include the following steps:

[0045] S1. Obtaining fault point location information of a companion optical cable of a target pipeline through an optical time domain reflectometer, wherein the fault point location information includes a first length of the companion optical cable between the fault point of the companion optical cable and the optical time domain reflectometer.

[0046] Specifically, the optical time domain reflectometer is connected to one end of the accompanying optical cable.

[0047] Exemplarily, a fault occurs in the accompanying optical cable A of the target pipeline, and the fault point location information of the accompanying optical cable A of the target pipeline is obtained by an optical time domain reflectometer. The fault point location information includes that the first length of the accompanying optical cable between the fault point of the accompanying optical cable A and the optical time domain reflectometer is 1.02 km.

[0048] S2. In response to the user's vibration operation at the plurality of first test points, a vibration signal corresponding to each first test point is acquired by an optical time domain reflectometer.

[0049] Wherein, a plurality of first test points are arranged above the target pipeline.

[0050] Exemplarily, the first test point includes test point a, test point b and test point c. The test point a, test point b and test point c are respectively arranged above the target pipeline.

[0051] S3. Determine the test point location information according to the vibration signal corresponding to each first test point, where the test point location information includes a second length of the accompanying optical cable between each first test point and the optical time domain reflectometer.

[0052] In combination with the above example, according to the vibration signals corresponding to test point a, test point b and test point c, it is determined that the second length of the companion optical cable between test point a and the optical time domain reflectometer is 0.9 km, the second length of the companion optical cable between test point b and the optical time domain reflectometer is 1 km, and the second length of the companion optical cable between test point c and the optical time domain reflectometer is 1.2 km.

[0053] S4. Determine a first test point where the difference between the second length and the first length is less than a preset threshold as a target test point.

[0054] It should be understood that the preset threshold can be set by the user according to actual scene requirements, and the embodiment of the present invention does not impose any particular limitation on this.

[0055] In combination with the above example, when the first length of the companion optical cable between the fault point of companion optical cable A and the optical time domain reflectometer is 1.02 km, and the preset threshold is 0.05 km, the second length of the companion optical cable between test point a and the optical time domain reflectometer is 0.9 km, and the second length of the companion optical cable between test point b and the optical time domain reflectometer is 1 km. The second length of the companion optical cable between test point c and the optical time domain reflectometer is 1.2 km. Since the absolute value of the difference between the second length 1 km corresponding to test point b and the first length 1.02 km is less than the preset threshold, test point b is determined as the target test point.

[0056] S5. In response to the user's vibration operation at the plurality of second test points, a vibration signal corresponding to each second test point is acquired by using an optical time domain reflectometer.

[0057] Specifically, each second test point is set in a target area where the target test point is located, wherein the target area is an area centered on the target test point and having an area of ​​a preset value.

[0058] Exemplarily, when the target test point is test point b, the target area where test point b is located is an area centered on test point b and having an area of ​​10m*10m.

[0059] It should be understood that the specific area of ​​the target area can be set according to the actual usage scenario, and the embodiment of the present invention does not particularly limit the specific implementation method of the target area.

[0060] In some embodiments, before the above S5, the method provided by the embodiment of the present invention further includes the following steps: setting a plurality of second test points in the target area where the target test point is located.

[0061] In one possible implementation, see Figure 3 , the above-mentioned setting of a plurality of second test points in the target area where the target test point is located includes:

[0062] S31. Obtaining the setting position information of the accompanying optical cable in the target area through the Radiodetection device, where the setting position information includes the latitude and longitude coordinates and setting depth of the accompanying optical cable;

[0063] In one possible implementation, the Radio device includes a transmitter and a receiver; the transmitter is connected to the accompanying optical cable, the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

[0064] Specifically, the transmitter is connected to the accompanying optical cable, a current signal is applied to the accompanying optical cable through a clamp, and an appropriate transmission frequency and output power are set, and the optical cables along the line are tested through a receiver. The receiver is provided with a pointer, which is used to indicate the direction of the optical cable and obtain the setting position information of the accompanying optical cable, which includes the latitude and longitude coordinates and setting depth of the accompanying optical cable.

[0065] S32. A plurality of second test points are set according to the setting position information of the accompanying optical cable, wherein each of the plurality of second test points is respectively set above the accompanying optical cable.

[0066] S6. Determine the fault point according to the vibration signal corresponding to each second test point.

[0067] The fault point is one of the multiple second test points, and the strength of the vibration signal corresponding to the fault point is the maximum value of the strengths of the vibration signals corresponding to the multiple second test points.

[0068] In some embodiments, the above-mentioned determining the fault point according to the vibration signal corresponding to each second test point specifically includes: determining the second test point whose signal strength is greater than a preset strength threshold according to the vibration signal corresponding to each second test point, and in response to the user's vibration operation within a preset range of the second test point whose signal strength is greater than the preset strength threshold, determining the maximum value of the intensity of the vibration signal as the fault point.

[0069] In one example, the determination system 100 uses an OTDR to connect the accompanying optical cable where a fault point exists at a connection point, obtains the optical cable distance X1 from the fault point to the connection point, and determines the optical fiber quality and the geographical section where the fault point is located; performs tapping tests at multiple first test points to obtain vibration signals corresponding to the multiple first test points, and obtains the optical cable distance X2 from each first test point to the connection point based on the vibration signals, and compares each X2 with X1. When X1 and X2 are equal or the distance difference between them is within the allowable error range, the vibration point is the position of the optical cable fault point, thereby completing the positioning of the fault point on the x-axis. The determination system 100 uses the Radi device to locate the fault point in the Y direction. The transmitter of the Radi device is installed near the communication cabinet or optical cable of the station. The current signal is applied to the optical cable through the clamp, and the appropriate transmission frequency and output power are set. The receiver is used to test the optical cable along the line. After the position of the optical cable is found, multiple points above the optical cable (multiple second test points) are tapped, and the vibration signal fluctuations responded to on the equipment at different tapping positions are compared to calibrate the position of the optical cable. When the vibration signal is strong, continue to move forward, backward, left and right for 1 meter to tap the ground to see that the point with the strongest signal is directly above the fault point.

[0070] As can be seen from the above S1-S6, the embodiment of the present invention obtains the first length of the accompanying optical cable between the fault point of the accompanying optical cable of the target pipeline and the optical time domain reflectometer through the optical time domain reflectometer; then the target test point is determined according to the vibration signals of the multiple first test points, and the fault point is determined according to the vibration signals of the multiple second test points set in the target area where the target test point is located, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points. The method provided by the embodiment of the present invention can quickly and accurately determine the actual position corresponding to the fault point of the optical cable, and can enable maintenance personnel to find the corresponding fault point after excavating the fault point, thereby realizing rapid maintenance, thereby reducing maintenance costs and improving maintenance efficiency.

[0071] During the excavation of pipeline ring welds, re-shooting, third-party construction and other projects, many cable reels and cable splicing boxes were found, which pose a great risk of damage to the cables. The lack of effective detection and positioning means prevents early prediction and measures from being taken, greatly increasing the risk of on-site operations. In addition, geological disasters and termites biting the cables have occurred in some special locations such as cable splicing boxes, bare cables, and crossing sections, resulting in damage to the cables such as broken cores. After the incident, the location of the damage point cannot be found immediately, delaying the repair time of the cables and causing negative impacts. Therefore, it is necessary to accurately detect the cable reel area of ​​the accompanying optical cable to enable maintenance personnel to quickly maintain the accompanying optical cable.

[0072] In some embodiments, see Figure 4, the method provided by the embodiment of the present invention further includes the following steps:

[0073] S41. When the difference between the target pipeline length and the accompanying optical cable length between the two first test points is greater than a preset threshold, the two first test points are determined as cable winding points.

[0074] S42. Obtain the setting position information of the companion optical cable between the two cable winding points through the Radi device; determine the area where the difference between the length of the companion optical cable and the length of the target pipeline is greater than a preset threshold as the cable winding area.

[0075] In one possible implementation, see Figure 5 , the method provided by the embodiment of the present invention further includes the following steps:

[0076] S51. In response to a user's vibration operation at a first intersection point and a second intersection point between a boundary of a cable coiling area and a target pipeline, vibration signals corresponding to the first intersection point and the second intersection point are acquired.

[0077] S52, determining the length of the companion optical cable between the first intersection point and the optical time domain reflectometer according to the vibration signal corresponding to the first intersection point; determining the length of the companion optical cable between the second intersection point and the optical time domain reflectometer according to the vibration signal corresponding to the second intersection point.

[0078] S53, determining the difference between the length of the accompanying optical cable between the first intersection point and the optical time domain reflectometer and the length of the accompanying optical cable between the second intersection point and the optical time domain reflectometer as the cable coiling length corresponding to the cable coiling area.

[0079] In one example, the determination system 100 uses OTDR to connect the accompanying optical cable, and performs cable winding inspection section by section (multiple first test points evenly distributed) for each kilometer. For example, a tapping test is performed at pipeline mileage X3 to create a vibration signal; S2, obtain and record the optical cable position X4 displayed by the device. If X4 ≥ X3, there is a cable winding situation in the pipeline mileage X3, and the tapping test is performed section by section to narrow the range to about 200m; select the nearest optical cable test pile, connect the transmitter of the Reddy device, apply a current signal to the optical cable through the clamp, and set the appropriate transmission frequency and output power, and use the receiver of the Reddy device to test the optical cable along the line; when encountering special situations such as the pointer spinning (the direction is approximately elliptical), the signal suddenly deviates, and the current value gradually decays, it is suspected that the optical cable here is coiled and shallowly buried. Continue to detect forward, and when the optical cable data is detected to be normal, make a mark to basically determine the optical cable winding area; observe the cable winding amount displayed by the OTDR device, and conduct excavation verification.

[0080] From the above, it can be seen that the method provided by the embodiment of the present invention obtains the length of the companion optical cable between multiple first test points of the target pipeline and the optical time domain reflectometer through the optical time domain reflectometer; then based on the length of the companion optical cable between the multiple first test points and the optical time domain reflectometer and the length of the target pipeline between the multiple first test points and the optical time domain reflectometer, the cable winding points can be determined, and then based on the Radi equipment, the cable winding area between the cable winding points can be determined. The method provided by the embodiment of the present invention can quickly and accurately determine the cable winding area of ​​the companion optical cable, and can enable maintenance personnel to achieve rapid maintenance of the companion optical cable, thereby reducing maintenance costs and improving maintenance efficiency.

[0081] The above mainly introduces the scheme of the embodiment of the present invention from the perspective of the method. It can be understood that in order to realize the above functions, the determination system 100 includes at least one of the hardware structure and software modules corresponding to each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiment of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiment of the present invention.

[0082] The embodiment of the present invention can divide the determination system 100 into functional units according to the above method example. For example, the determination system 100 can be divided into functional units corresponding to various functions, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present invention is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0083] For example, Figure 6A schematic diagram of the hardware structure of a determination system 100 provided in an embodiment of the present invention is shown. The determination system 100 includes: an acquisition unit 610, which is used to acquire the fault point location information of the companion optical cable of the target pipeline through an optical time domain reflectometer, and the fault point location information includes the first length of the companion optical cable between the fault point of the companion optical cable and the optical time domain reflectometer, and the optical time domain reflectometer is connected to one end of the companion optical cable; the acquisition unit 610 is also used to respond to the user's vibration operation at multiple first test points, and acquire the vibration signal corresponding to each first test point through the optical time domain reflectometer, wherein the multiple first test points are set above the target pipeline; the processing unit 620 is used to determine the test point location information according to the vibration signal corresponding to each first test point, and the test point location information includes the first length of each first test point and the optical time domain reflectometer. The second length of the accompanying optical cable between the reflectometers; the processing unit 620 is also used to determine the first test point where the difference between the second length and the first length is less than a preset threshold as the target test point; the acquisition unit 610 is also used to respond to the user's vibration operation at multiple second test points, and obtain the vibration signal corresponding to each second test point through the optical time domain reflectometer, wherein each second test point is set in the target area where the target test point is located; the processing unit 620 is also used to determine the fault point according to the vibration signal corresponding to each second test point, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

[0084] Optionally, the processing unit 620 is further configured to set a plurality of second test points in a target area where the target test point is located, where the target area is an area centered on the target test point and having an area of ​​a preset value.

[0085] Optionally, the processing unit 620 is specifically used to: obtain the setting position information of the companion optical cable in the target area through the Radi device, the setting position information including the latitude and longitude coordinates and the setting depth of the companion optical cable; set multiple second test points according to the setting position information of the companion optical cable, and each of the multiple second test points is respectively set above the companion optical cable.

[0086] Optionally, the Radio device includes a transmitter and a receiver; the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

[0087] Those skilled in the art will appreciate that all or part of the steps of the above embodiments can be implemented by a program to instruct the relevant hardware to complete the program, which can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a random access memory, etc. The above-mentioned processing unit or processor can be a central processing unit, a general-purpose processor, a specific circuit structure (appliance specific integrated circuit, ASIC), a microprocessor (digital processor, DSP), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.

[0088] The embodiment of the present invention also provides a computer program product including instructions, when the instructions are run on a computer, the computer executes any one of the methods in the above embodiments. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present invention is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or a data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., an SSD), etc.

[0089] It should be noted that the above-mentioned devices for storing computer instructions or computer programs provided in the embodiments of the present invention, such as but not limited to the above-mentioned memory, computer-readable storage medium and communication chip, etc., are all non-volatile (non-transitory). Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present invention can be implemented with hardware, software, firmware or any combination thereof. When implemented using software, these functions can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein the communication medium includes any medium that is convenient for transmitting a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0090] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for determining the fault location of a pipeline accompanying optical cable, characterized in that: The method comprises: Acquire the fault point location information of the companion optical cable of the target pipeline by means of an optical time domain reflectometer, wherein the fault point location information includes a first length of the companion optical cable between the fault point of the companion optical cable and the optical time domain reflectometer, and the optical time domain reflectometer is connected to one end of the companion optical cable; In response to a user's vibration operation at a plurality of first test points, a vibration signal corresponding to each first test point is acquired by an optical time domain reflectometer, wherein the plurality of first test points are arranged above the target pipeline; Determine the test point location information according to the vibration signal corresponding to each first test point, wherein the test point location information includes a second length of the accompanying optical cable between each first test point and the optical time domain reflectometer; Determine a first test point where the difference between the second length and the first length is less than a preset threshold as a target test point; In response to a user's vibration operation at a plurality of second test points, a vibration signal corresponding to each second test point is acquired by an optical time domain reflectometer, wherein each second test point is arranged in a target area where the target test point is located; The fault point is determined according to the vibration signal corresponding to each second test point, wherein the fault point is one of the multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

2. The method according to claim 1, characterized in that Before acquiring the vibration signal corresponding to each second test point by an optical time domain reflectometer in response to the vibration operation of the user at the plurality of second test points, the method further comprises: A plurality of second test points are set in a target area where the target test point is located, and the target area is an area centered on the target test point and having an area of ​​a preset value.

3. The method according to claim 2, characterized in that The step of setting a plurality of second test points in the target area where the target test point is located comprises: Acquire the setting position information of the accompanying optical cable in the target area through the radiodetection device, wherein the setting position information includes the latitude and longitude coordinates and the setting depth of the accompanying optical cable; A plurality of second test points are set according to the setting position information of the accompanying optical cable, and each of the plurality of second test points is respectively set above the accompanying optical cable.

4. The method according to claim 3, characterized in that The radiodetection device includes a transmitter and a receiver; the transmitter is connected to the accompanying optical cable, the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

5. The method according to claim 4, characterized in that The method further comprises: When the difference between the target pipeline length and the accompanying optical cable length between the two first test points is greater than a preset threshold, the two first test points are determined as cable winding points; The setting position information of the accompanying optical cable between the two cable winding points is obtained by using the Radi device; and the area where the difference between the length of the accompanying optical cable and the length of the target pipeline is greater than a preset threshold is determined as the cable winding area.

6. The method according to claim 5, characterized in that The method further comprises: In response to a user's vibration operation at a first intersection point and a second intersection point of the target pipeline and a boundary of the cable coiling area, acquiring vibration signals corresponding to the first intersection point and the second intersection point; Determine the length of the accompanying optical cable between the first intersection and the optical time domain reflectometer according to the vibration signal corresponding to the first intersection; determine the length of the accompanying optical cable between the second intersection and the optical time domain reflectometer according to the vibration signal corresponding to the second intersection; The difference between the length of the accompanying optical cable between the first intersection point and the optical time domain reflectometer and the length of the accompanying optical cable between the second intersection point and the optical time domain reflectometer is determined as the cable coiling length corresponding to the cable coiling area.

7. A fault point determination system for a pipeline accompanying optical cable, characterized in that: The system comprises: an acquisition unit, configured to acquire the fault point location information of the accompanying optical cable of the target pipeline through an optical time domain reflectometer, wherein the fault point location information includes a first length of the accompanying optical cable between the fault point of the accompanying optical cable and the optical time domain reflectometer, wherein the optical time domain reflectometer is connected to one end of the accompanying optical cable; The acquisition unit is further used to acquire a vibration signal corresponding to each first test point through an optical time domain reflectometer in response to a vibration operation of a user at a plurality of first test points, wherein the plurality of first test points are arranged above the target pipeline; A processing unit, configured to determine the test point position information according to the vibration signal corresponding to each first test point, wherein the test point position information includes a second length of the accompanying optical cable between each first test point and the optical time domain reflectometer; The processing unit is further configured to determine a first test point where the difference between the second length and the first length is less than a preset threshold as a target test point; The acquisition unit is further used to acquire a vibration signal corresponding to each second test point through an optical time domain reflectometer in response to a vibration operation of the user at a plurality of second test points, wherein each second test point is arranged in a target area where the target test point is located; The processing unit is also used to determine the fault point according to the vibration signal corresponding to each second test point, wherein the fault point is one of multiple second test points, and the intensity of the vibration signal corresponding to the fault point is the maximum value among the intensities of the vibration signals corresponding to the multiple second test points.

8. The system according to claim 7, characterized in that The processing unit is further used to set a plurality of second test points in a target area where the target test point is located, wherein the target area is an area centered on the target test point and having an area of ​​a preset value.

9. The system according to claim 8, characterized in that The processing unit is specifically used for: Acquire the setting position information of the accompanying optical cable in the target area through the radiodetection device, wherein the setting position information includes the latitude and longitude coordinates and the setting depth of the accompanying optical cable; A plurality of second test points are set according to the setting position information of the accompanying optical cable, and each of the plurality of second test points is respectively set above the accompanying optical cable.

10. The system according to claim 9, characterized in that The radiodetection device includes a transmitter and a receiver; the transmitter is used to input a current signal to the accompanying optical cable, and the receiver is used to detect the current signal to determine the setting position information of the accompanying optical cable.

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