Method, system and equipment for positioning optical cable fault of expressway

Abstract

The invention is suitable for the technical field of optical cable communication, and provides an expressway optical cable fault positioning method, system and equipment, and the method specifically comprises the steps: segmenting an optical cable along an expressway according to expressway stakes, marking the optical cable information of each optical cable segment, and generating an optical cable basic database; the method comprises the following steps: testing an optical cable through OTDR equipment to generate an OTDR test data set, and obtaining a breakpoint information report of an optical fiber breakpoint based on the OTDR test data set; matching the breakpoint information report with the optical cable information to generate a preliminary positioning result; deploying a plurality of optical cable identification points along the highway, and marking identification information for each optical cable identification point; performing correlation analysis on the preliminary positioning result and the identification information to obtain relative position information of the optical fiber breakpoint; through the GIS system of the expressway optical cable, navigation guidance information is generated for the optical fiber breakpoint on the visual platform, and the optical fiber breakpoint is combined with the expressway stake, so that accurate positioning of the optical cable fault is realized.

Description

Technical Field

[0001] The present application belongs to the field of optical cable communication technology, and in particular, relates to a method, system and device for locating faults in optical cables of highways. Background Art

[0002] In highway communication networks, optical cables are key infrastructure for information transmission, and their stable operation is crucial to ensuring the realization of functions such as traffic monitoring, toll collection systems, and emergency rescue. However, in actual operations, optical cable failures occur from time to time, and emergency repairs often face timeouts. The main bottleneck is the inability to quickly and accurately locate the fault point.

[0003] At present, in the process of repairing optical cable faults, OTDR (Optical Time Domain Reflectometer) is used as an important tool for locating optical cable faults to test the logical position of the optical fiber fault. In the above test process, only the optical fiber length from the measuring point to the fault point can be obtained through OTDR, but the actual geographical location of the fault point cannot be obtained. To find the actual location of the fault point, it is necessary to rely on the maintenance team's familiarity with the highway and accumulated experience to judge the actual location of the fault point. This is not only inefficient, but also easily affected by human factors, resulting in inaccurate positioning, which in turn prolongs the repair time and affects the normal operation of the highway communication network. Summary of the invention

[0004] The embodiments of the present application provide a method, system and device for locating optical cable faults on a highway, which can accurately locate optical cable faults.

[0005] In a first aspect, an embodiment of the present application provides a method for locating a highway optical cable fault, comprising: Divide the optical cable along the expressway according to the expressway stakes to generate multiple optical cable segments, mark the optical cable information of each optical cable segment, and generate an optical cable basic database, wherein the optical cable information includes the starting stake number, the ending stake number, the optical cable length, the optical cable direction and the optical fiber parameters; Testing the optical cable by an OTDR device to generate an OTDR test data set, and obtaining a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; Matching the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; Deploy multiple optical cable identification points along the expressway, and mark identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; Correlate and analyze the preliminary positioning result with the identification information to obtain relative position information of the optical fiber breakpoint; The optical cable basic database, the OTDR test data set and the identification information are integrated into a visualization platform, and navigation guidance information is generated for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

[0006] Furthermore, the optical cable information of marking each optical cable segment includes: Marking each corner and direction change of each optical cable segment to form the optical cable direction of the optical cable segment; Mark the highway stake closest to the starting point of the optical cable as the starting stake number, and mark each highway stake from near to far, the starting stake number and the ending stake number of each section of the optical cable section being the stake numbers of the corresponding two adjacent highway stakes; From the starting point of the optical cable, mark the corresponding optical cable sheath length for each highway stake, and calculate the optical cable length between two adjacent highway stakes. The calculation formula of the optical cable length is as follows:

[0007] Where L represents the length of the optical cable, i represents the highway stake number, Indicates the length of the optical cable sheath corresponding to the highway stake. Indicates the length of the optical cable between the starting point of the optical cable and the starting stake number of the highway.

[0008] Further, the testing of the optical cable by an OTDR device to generate an OTDR test data set includes: The OTDR device emits an optical pulse signal for transmission in the optical fiber link, and records the test information of the OTDR device, wherein the test information includes the test time, the test parameters and the test curve; During the signal transmission process, if the optical pulse signal encounters an optical fiber breakpoint, an optical signal is generated; Determine the distance information of the optical fiber breakpoint according to the occurrence time and occurrence amplitude of the optical signal; An OTDR test data set is generated based on the test information and the distance information.

[0009] Further, obtaining a breakpoint information report of an optical fiber breakpoint based on the OTDR test data set includes: Using a fixed length segmentation method, the test curve in the OTDR test data set is divided into blocks to obtain a plurality of data blocks; Performing signal strength analysis on the data blocks to obtain abnormal signal characteristics in each of the data blocks; Associating the abnormal signal feature with the distance information in the OTDR test data set to obtain breakpoint association data; Determine the data block number to which the optical fiber breakpoint belongs based on the breakpoint association data and a preset signal attenuation threshold; A breakpoint information report is generated based on the abnormal signal characteristics, the data block number and the distance information.

[0010] Furthermore, matching the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault includes: Matching and calculating the distance information in the breakpoint information report with the length of each section of the optical cable in the optical cable basic database to determine the optical cable section where the optical fiber breakpoint is located; According to the optical cable basic database, the stake number range of the optical fiber breakpoint is determined, and a preliminary positioning result is generated. The stake number range includes the starting stake number and the ending stake number of the optical cable segment where the optical fiber breakpoint is located.

[0011] Furthermore, a plurality of optical cable identification points are deployed along the expressway, and identification information is marked for each of the optical cable identification points. The identification information includes the location data of the optical cable identification point and the optical cable information corresponding to the location, including: Preliminarily segmenting each of the optical cable segments according to the geographic information data to obtain a plurality of optical cable segments; Using multi-source remote sensing image fusion technology to calculate the terrain complexity index of each of the optical cable segments; By analyzing historical meteorological data and geological exploration reports, the impact of natural disasters on optical cables is evaluated to obtain the natural disaster risk coefficient of each optical cable segment; Based on satellite positioning data, a heat map of the intensity of human activities along the optical cable is drawn to quantify the intensity of human activities in each of the optical cable sections; Calculating a comprehensive risk score for each of the optical cable segments based on the terrain complexity index, the natural disaster risk coefficient, and the intensity of human activities; Based on the comprehensive risk score, optical cable identification points are deployed in the optical cable segment, and identification information is marked for each of the optical cable identification points.

[0012] Furthermore, the associating analysis of the preliminary positioning result with the identification information to obtain the relative position information of the optical fiber breakpoint includes: Constructing a spatial topological model corresponding to the optical cable, and mapping the position information of all optical cable identification points in the optical cable to the spatial topological model; In the spatial topology model, a test coordinate system is established with the OTDR test starting point as the origin and the test direction as the positive direction; Convert the distance information and the position information of the optical cable identification point into coordinate values ​​in the test coordinate system, and determine the position coordinates of the optical fiber breakpoint and the optical cable identification point in the spatial topology model; Searching for a plurality of optical cable identification points closest to the optical fiber breakpoint in the spatial topology model, marking the points as relative identification points, and obtaining position coordinates of the plurality of relative identification points; The Kriging interpolation algorithm is used to interpolate the spatial position relationship between the optical fiber breakpoint and the multiple relative identification points, obtain the distance and azimuth between the optical fiber breakpoint and the multiple relative identification points, and generate the relative position information of the optical fiber breakpoint.

[0013] Furthermore, the GIS system through the highway optical cable generates navigation guidance information for the optical fiber breakpoint on the visualization platform, including: Based on the relative position information of the optical fiber breakpoint, determining the breakpoint position coordinates of the optical fiber breakpoint in the GIS system of the highway optical cable; The shortest path algorithm is used to generate an optimal path from the operation and maintenance starting point to the breakpoint location coordinates, and based on the optimal path, navigation guidance information is generated, the navigation guidance information including the travel direction, distance and turning point.

[0014] In a second aspect, an embodiment of the present application provides a highway optical cable fault location system, comprising: The first processing module is used to segment the optical cable along the expressway according to the expressway stakes, generate multiple optical cable segments, mark the optical cable information of each optical cable segment, and generate an optical cable basic database, wherein the optical cable information includes the starting stake number, the ending stake number, the optical cable length, the optical cable direction and the optical fiber parameters; The second processing module is used to test the optical cable through an OTDR device, generate an OTDR test data set, and obtain a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; The third processing module is used to match the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; The fourth processing module is used to deploy multiple optical cable identification points along the expressway, and mark identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; A fifth processing module: used for associating and analyzing the preliminary positioning result with the identification information to obtain the relative position information of the optical fiber breakpoint; The sixth processing module is used to integrate the optical cable basic database, the OTDR test data set and the identification information into a visualization platform, and generate navigation guidance information for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

[0015] In a third aspect, an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned highway optical cable fault locating method when executing the computer program.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: The present invention discloses a method for locating a highway optical cable fault, which uses the highway stake number as a reference for locating the optical cable fault. The optical cable is segmented according to the highway stakes along the highway, and then the optical fiber breakpoints obtained by testing the optical cable with an OTDR device are matched with the optical cable segments. The optical fiber breakpoints, i.e., the optical cable fault points, can be initially located, thereby greatly shortening the troubleshooting time for the fault location. After the initial location of the fault is located, the relative position information between the optical fiber breakpoints and the optical cable identification points can be quickly correlated and analyzed through the optical cable identification points, providing maintenance personnel with accurate fault location guidance. In addition, through the integrated application of the GIS system and the visualization platform, intuitive and clear navigation guidance information is provided to maintenance personnel, further improving the speed and accuracy of fault response. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a flow chart of a method for locating a highway optical cable fault provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a highway optical cable fault location system provided by one embodiment of the present invention; Figure 3 It is a structural diagram of a computer device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0020] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0021] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0022] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0023] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0024] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0025] See also Figure 1 As shown, the present invention is a method for locating a highway optical cable fault, comprising the following steps: S100, segmenting the optical cable along the expressway according to the expressway stakes to generate multiple optical cable segments, marking the optical cable information of each optical cable segment, and generating an optical cable basic database, wherein the optical cable information includes a starting stake number, an ending stake number, an optical cable length, an optical cable direction, and optical fiber parameters; Highway markers are usually set up on highways, which are usually combined with a milestone system to identify and distinguish multiple location points on the highway and provide road location information. Therefore, in this application, the highway marker number is used as a reference for locating optical cable faults. When repairing highway optical cable faults, the optical cable test data is combined with the highway marker, so that when the optical cable fails, the faulty area of ​​the optical cable can be quickly found and located on the highway, so as to perform relevant maintenance operations. Specifically, the optical cable is segmented according to the highway markers to obtain multiple optical cable segments, and each optical cable segment is analyzed and tested to obtain corresponding optical cable fault information.

[0026] In this embodiment, the optical cable information of each optical cable segment is stored in the optical cable basic database, and then the overall optical cable information of the optical cable is obtained, which is convenient for subsequent query of the optical cable information.

[0027] In some embodiments, the marking of the optical cable information of each optical cable segment includes: Marking each corner and direction change of each optical cable segment to form the optical cable direction of the optical cable segment; Mark the highway stake closest to the starting point of the optical cable as the starting stake number, and mark each highway stake from near to far, the starting stake number and the ending stake number of each section of the optical cable section being the stake numbers of the corresponding two adjacent highway stakes; From the starting point of the optical cable, mark the corresponding optical cable sheath length for each highway stake, and calculate the optical cable length between two adjacent highway stakes. The calculation formula of the optical cable length is as follows:

[0028] Where L represents the length of the optical cable, i represents the highway stake number, Indicates the length of the optical cable sheath corresponding to the highway stake. Indicates the length of the optical cable between the starting point of the optical cable and the starting stake number of the highway.

[0029] In this embodiment, for each section of the optical cable, its corners and direction changes are marked to form a corresponding optical cable direction, which is convenient for further positioning of the optical cable during subsequent maintenance. The starting stake number and ending stake number in the optical cable information represent the starting stake number and ending stake number of the highway stake corresponding to each section of the optical cable. When the fault is located between the corresponding starting stake number and ending stake number, the maintenance personnel can know the fault area of ​​the optical cable.

[0030] In this embodiment, by marking the length of each optical cable segment, when a fiber break is detected in the optical cable, the location of the optical cable break can be determined according to the length of each optical cable segment, and the fault point can be refined, so that maintenance personnel can find the fault point in the corresponding fault area. Specifically, the optical cable usually takes the ODF of the machine room as the starting point. In one embodiment, the highway stake closest to the ODF of the machine room is the starting stake number of the highway, and each highway stake is marked from near to far. For the starting stake number, the fiber core length from the starting stake to the machine room is the optical cable length corresponding to the starting stake number. For the optical cable length between two adjacent highway stakes, the corresponding optical cable length is obtained by calculating the difference in the optical cable sheath lengths corresponding to the two highway stakes.

[0031] S200, testing the optical cable by using an OTDR device to generate an OTDR test data set, and obtaining a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; In some embodiments, the step of testing the optical cable by using an OTDR device to generate an OTDR test data set includes: The OTDR device emits an optical pulse signal for transmission in the optical fiber link, and records the test information of the OTDR device, wherein the test information includes the test time, the test parameters and the test curve; During the signal transmission process, if the optical pulse signal encounters an optical fiber breakpoint, an optical signal is generated; Determine the distance information of the optical fiber breakpoint according to the occurrence time and occurrence amplitude of the optical signal; An OTDR test data set is generated based on the test information and the distance information.

[0032] In this embodiment, an optical pulse signal is emitted by the OTDR device and transmitted in the optical fiber link. When encountering a breakpoint, the optical pulse signal will be reflected. At the same time, the optical fiber material around the breakpoint will generate backscattering of the optical pulse signal. The above-mentioned reflected and backscattered optical signals are returned to the OTDR device along the optical fiber link. The distance information of the optical fiber breakpoint can be calculated according to the time and amplitude of the optical signal. At the same time, test parameters such as the test time and test wavelength of the OTDR device are collected and recorded together with the distance information to obtain an OTDR test data set.

[0033] In some embodiments, the acquired OTDR test data is preprocessed to remove abnormal values ​​and noise data, thereby improving data quality and reliability.

[0034] In some embodiments, obtaining a breakpoint information report of a fiber breakpoint based on the OTDR test data set includes: Using a fixed length segmentation method, the test curve in the OTDR test data set is divided into blocks to obtain a plurality of data blocks; Performing signal strength analysis on the data blocks to obtain abnormal signal characteristics in each of the data blocks; Associating the abnormal signal feature with the distance information in the OTDR test data set to obtain breakpoint association data; Determine the data block number to which the optical fiber breakpoint belongs based on the breakpoint association data and a preset signal attenuation threshold; A breakpoint information report is generated based on the abnormal signal characteristics, the data block number and the distance information.

[0035] In this embodiment, a fixed-length segmentation method is used to segment the entire test curve into multiple data blocks according to a preset segmentation length. Each data block represents a specific section on the optical fiber link, thereby simplifying the subsequent signal analysis process, making the signal characteristics in each data block easier to identify and process. Specifically, according to the characteristics of the optical fiber link and the performance parameters of the OTDR equipment, a reasonable block length is preset as the preset segmentation length. It can be understood that the above-mentioned preset segmentation length can include the signal characteristics generated by most events in the optical fiber link, and at the same time it will not be too long to cause low data processing efficiency. In some embodiments, a hash algorithm such as MD5 is used to uniquely encode each of the above-mentioned data blocks to ensure the integrity of the block data.

[0036] In this embodiment, within each data block, the signal strength is analyzed to find abnormal signal features that are different from normal signals. The above-mentioned abnormal signal features usually include sudden changes in signal strength, the appearance of reflection peaks, etc., and are usually associated with events on the optical fiber link. Specifically, the signal strength data is analyzed, and abnormal points that suddenly increase or decrease in the test curve of the corresponding data block are marked. The above-mentioned abnormal points usually represent reflection or attenuation events on the optical fiber link. Further, the abnormality of these points can be further confirmed by comparing the signal strength change rate of adjacent data points. In addition, in the signal strength data, the reflection peak is marked. The above-mentioned reflection peak usually represents a joint, break or other reflection event on the optical fiber link. By analyzing the amplitude, width and position of the reflection peak, the abnormal event information of the optical fiber link can be obtained. According to the specific test environment and the characteristics of the optical fiber link, the abnormal signal features related to signal fluctuations and noise increase in the test curve of the corresponding data block are identified and analyzed.

[0037] In this embodiment, each abnormal signal feature is associated with its specific position on the optical fiber link according to the distance information in the OTDR test data set, and the approximate position of the optical fiber breakpoint can be determined according to the position of the abnormal signal feature.

[0038] In order to further determine the accuracy of the breakpoint associated data and thus improve the accuracy of positioning, in this embodiment, by comparing the position where the abnormal signal feature appears in the breakpoint associated data, that is, the signal attenuation degree of the breakpoint position with the preset signal attenuation threshold, specifically, if the signal attenuation degree exceeds the signal attenuation threshold, it is determined that the breakpoint position is within the block range, the data block is marked as an abnormal block and the corresponding data block number is obtained, and it is indicated that the positioning of the breakpoint position is accurate; In this embodiment, the abnormal signal characteristics, data block number and distance information generated by the above analysis results are integrated to generate a breakpoint information report containing information such as the fiber breakpoint location and abnormal signal characteristics, providing reference information for subsequent optical cable faults.

[0039] S300, matching the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; In this embodiment, the optical fiber breakpoint obtained by testing the optical cable with the OTDR device is matched with the optical cable segment, so that the optical fiber breakpoint, ie, the optical cable fault point, can be preliminarily located, thereby greatly shortening the troubleshooting time of the fault location.

[0040] In some embodiments, the step S300 includes: Matching and calculating the distance information in the breakpoint information report with the optical cable lengths of each optical cable segment in the optical cable basic database to determine the optical cable segment where the optical fiber breakpoint is located; According to the optical cable basic database, the stake number range of the optical fiber breakpoint is determined, and a preliminary positioning result is generated. The stake number range includes the starting stake number and the ending stake number of the optical cable segment where the optical fiber breakpoint is located.

[0041] In this embodiment, the distance information from the optical fiber breakpoint to the OTDR test starting point is obtained from the breakpoint information report, and the optical cable length of each optical cable segment is obtained from the optical cable basic database. It can be understood that the OTDR test starting point is the above-mentioned machine room ODF, so that the OTDR test starting point is the same as the starting point position of the optical cable, which is convenient for determining the optical fiber breakpoint.

[0042] Specifically, the distance information in the breakpoint information report is compared with the length of each optical cable segment in the optical cable basic database one by one, and the optical cable segment where the optical fiber breakpoint is located is determined by accumulating the length of each optical cable until it reaches or exceeds the distance information in the breakpoint information, and the starting stake number and the ending stake number of the optical cable segment where the optical fiber breakpoint is located are determined according to the optical cable basic database. Based on this, the preliminary positioning result of the optical fiber breakpoint is generated, that is, the preliminary positioning result of the optical cable fault.

[0043] S400, deploying a plurality of optical cable identification points along the expressway, marking identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; Since highway marker stakes are part of the road infrastructure, their positions and spacings are usually standardized, so that when locating the optical fiber breakpoint, the area between two highway marker stakes is too wide. Therefore, in this embodiment, multiple optical cable identification points are deployed along the highway, and the multiple optical cable identification points are deployed according to the deployment conditions of the optical cable along the highway, specifically deployed in the area between two adjacent highway marker stakes, for further locating the optical cable breakpoint.

[0044] In some embodiments, the above step S400 includes: Preliminarily segmenting each of the optical cable segments according to the geographic information data to obtain a plurality of optical cable segments; Using multi-source remote sensing image fusion technology to calculate the terrain complexity index of each of the optical cable segments; By analyzing historical meteorological data and geological exploration reports, the impact of natural disasters on optical cables is evaluated to obtain the natural disaster risk coefficient of each optical cable segment; Based on satellite positioning data, a heat map of the intensity of human activities along the optical cable is drawn to quantify the intensity of human activities in each of the optical cable sections; Calculating a comprehensive risk score for each of the optical cable segments based on the terrain complexity index, the natural disaster risk coefficient, and the intensity of human activities; Based on the comprehensive risk score, optical cable identification points are deployed in the optical cable segment, and identification information is marked for each of the optical cable identification points.

[0045] In this embodiment, geographic information data including attributes such as terrain undulation, vegetation coverage, geological stability and hydrological conditions are obtained along the expressway, and the above geographic information data are preprocessed to unify the data format and coordinate system; for each optical cable segment, the geographic attribute data of the area where the relevant optical cable segment is located is extracted from the geographic information data, including terrain undulation, vegetation coverage, geological stability and hydrological conditions; the above geographic attribute data are normalized to unify the numerical ranges of different attributes to between 0 and 1, so as to eliminate the influence of the difference in the numerical ranges of different attributes on subsequent analysis; the normalized geographic attribute data are clustered and analyzed using the K-means clustering algorithm, and the optical cable is divided into a number of relatively homogeneous optical cable segments according to the clustering results, and the attributes such as terrain undulation, vegetation coverage, geological stability and hydrological conditions in each optical cable segment are similar.

[0046] In this embodiment, according to the deployment conditions of the optical cable along the highway, multiple optical cable identification points are deployed for each optical cable segment, wherein the deployment conditions include terrain complexity, natural disaster risk and intensity of human activities. The influence coefficient of each deployment condition is calculated separately, and then the weighted sum method is adopted to calculate the comprehensive risk score of each optical cable segment. The higher the score, the greater the risk faced by the optical cable segment, and more optical cable identification points need to be deployed in the corresponding optical cable segment, and the distance between two adjacent optical cable identification points decreases accordingly, thereby improving the accuracy of locating optical cable faults. The number of optical cable identification points and the distance between adjacent optical cable identification points are pre-set by experts according to the geographical conditions and comprehensive risk scores of the corresponding areas. For example, in a possible embodiment, the comprehensive risk score is 90, and the experts determine it as a high-risk area and deploy it along the direction of the optical cable of the optical cable segment with a distance of 5 meters between two adjacent optical cable identification points.

[0047] For terrain complexity, the fused remote sensing images are used to extract the terrain features of the area where the optical cable segment is located, such as elevation, slope, and slope aspect. According to the complexity and variability of the terrain features, each terrain feature is quantified for numerical calculation and comparison. Thus, the terrain complexity index of each optical cable segment is calculated.

[0048] For natural disaster risks, historical meteorological data and geological exploration reports are combined to analyze the specific impacts of different natural disasters on optical cables. Specifically, meteorological disasters, such as floods caused by heavy rains and optical cable breakage caused by strong winds, are considered, as well as geological disasters, such as optical cable breakage caused by earthquakes, and optical cable burial caused by landslides and debris flows. According to the severity and frequency of the disaster impact, an impact value is assigned to each disaster. The impact value can be quantified using a scoring system or a grading system for subsequent risk factor calculations. According to the geological exploration report, the geological structure and stability of the soil along the optical cable are understood, potential geological disasters such as landslides, debris flows, and ground collapse are identified, and the probability value of the corresponding geological disaster occurring in each optical cable segment is calculated. The impact value of each disaster is multiplied by its corresponding probability value using methods such as weighted summation or weighted product, and the sum is used to obtain the natural disaster risk coefficient of each optical cable segment.

[0049] For the intensity of human activities, satellite positioning data is used to obtain human activity information along the optical cable, such as population density, traffic flow, building density, etc. Based on the above human activity information, a heat map of the intensity of human activities along the optical cable is drawn, and the intensity of human activities in each optical cable segment is quantified according to the color and intensity of the heat map of the intensity of human activities.

[0050] In the present embodiment, identification information needs to be marked for each optical cable identification point, wherein the identification information includes the location data of the optical cable identification point and the optical cable information corresponding to the location, so that the optical cable position can be quickly located and the optical cable information can be obtained. In some embodiments, the location data is the geographic location information in the GIS system, which can determine the specific location of the optical cable identification point, and the optical cable information is stored in the form of a QR code at the optical cable identification point. Maintenance personnel can obtain the corresponding optical cable information by scanning the QR code without having to carry a large amount of drawings and materials for on-site comparison, thereby reducing the investment in manpower and material resources.

[0051] S500, performing correlation analysis on the preliminary positioning result and the identification information to obtain relative position information of the optical fiber breakpoint; In this embodiment, after the fault location is initially located, the relative position information between the optical fiber breakpoint and the optical cable identification point can be quickly correlated and analyzed through the optical cable identification point, providing accurate fault location guidance for maintenance personnel.

[0052] In some embodiments, the step S500 includes: Constructing a spatial topological model corresponding to the optical cable, and mapping the position information of all optical cable identification points in the optical cable to the spatial topological model; In the spatial topology model, a test coordinate system is established with the OTDR test starting point as the origin and the test direction as the positive direction; Convert the distance information and the position information of the optical cable identification point into coordinate values ​​in the test coordinate system, and determine the position coordinates of the optical fiber breakpoint and the optical cable identification point in the spatial topology model; Searching for a plurality of optical cable identification points closest to the optical fiber breakpoint in the spatial topology model, marking the points as relative identification points, and obtaining position coordinates of the plurality of relative identification points; The Kriging interpolation algorithm is used to interpolate the spatial position relationship between the optical fiber breakpoint and the multiple relative identification points, obtain the distance and azimuth between the optical fiber breakpoint and the multiple relative identification points, and generate the relative position information of the optical fiber breakpoint.

[0053] Due to the diversity of highways, optical fiber directions and geographical environments, multiple optical cable identification points are not set in a straight line during the deployment process. In this embodiment, multiple optical cable identification points are usually deployed along the optical fiber direction, between the optical cable and the highway according to the complexity of the terrain where the optical cable is located. By mapping the corresponding optical cables and optical cable identification points to the spatial topological model, the relative position between the optical fiber breakpoint and the optical cable identification point can be obtained, and then the specific position of the optical fiber breakpoint can be obtained based on the position information of the optical cable identification point and the spatial topological model.

[0054] In this embodiment, a spatial topology structure is constructed according to the direction of the optical cable. The position of each optical cable identification point and its corresponding position information are also mapped in the spatial topology structure. A coordinate system is established with the OTDR test starting point as the origin and the test direction as the positive direction. The OTDR test data is obtained, the distance information of the optical fiber breakpoint is obtained, and the distance information and the position information of the optical cable identification are converted into coordinate values ​​under the coordinate system to obtain the position coordinates of the optical fiber breakpoint and the optical cable identification point in the optical fiber network spatial topology model.

[0055] In this embodiment, a KNN algorithm is used, and the position coordinates of the optical fiber breakpoint are taken as the center to search for N optical cable identification points closest to the optical fiber breakpoint, and mark them as relative identification points, and obtain the position coordinates of the above N relative identification points in the spatial topology model, wherein the value of N is determined according to the specific needs of the operation and maintenance personnel, and then, according to the position coordinates of the relative identification points and the optical fiber breakpoints, a Kriging interpolation algorithm is used to establish a spatial position relationship model of the relative identification points and the optical fiber breakpoints; through the spatial position relationship model, the interpolation distance and interpolation azimuth of the optical fiber breakpoint relative to each relative identification point are calculated; the interpolation distances are sorted, and the relative identification point with the smallest interpolation distance is used as the nearest identification point, and the azimuth between the optical fiber breakpoint and the nearest identification point is determined according to the interpolation azimuth, and the distance and azimuth of the optical fiber breakpoint relative to the nearest identification point are output, and used as the relative position information of the optical fiber breakpoint.

[0056] In this embodiment, based on the identification information of the N relative identification points obtained, the specific positions of the relative identification points are fed back to the operation and maintenance personnel to guide the operation and maintenance personnel to quickly locate and handle the optical fiber fault. In some embodiments, a warning sensor is also provided on the optical cable identification point. When the corresponding multiple relative identification points are located, the warning sensor on the relative identification point issues a warning. When the maintenance personnel are looking for the precise position of the optical fiber breakpoint, they can follow the instructions of the warning sensor. At the same time, the warning signals of the relative identification point and the nearest identification point are different, which makes it easy for the maintenance personnel to quickly find the corresponding nearest identification point while finding the relative identification point, and then determine the optical fiber breakpoint, that is, the optical cable fault point, based on the relative position information between the optical fiber breakpoint and the nearest identification point.

[0057] S600, integrating the optical cable basic database, the OTDR test data set and the identification information into a visualization platform, and generating navigation guidance information for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

[0058] In this embodiment, the data generated during the above steps S100-S500 are integrated into the visualization platform, and then when looking for the optical cable fault point, the detailed data information of the optical fiber breakpoint can be obtained according to the visualization platform, such as the breakpoint information report of the optical fiber breakpoint, relative position information, the nearest identification point and the relative identification point, etc., which helps to eliminate data islands, improve the availability and consistency of data, and facilitate maintenance personnel to trace data and obtain maintenance-related data information. It can be understood that through the integrated application of the GIS system and the visualization platform, intuitive and clear navigation guidance information is provided to maintenance personnel, further improving the speed and accuracy of fault response.

[0059] In some embodiments, the GIS system through the highway optical cable generates navigation guidance information for the optical fiber breakpoint on the visualization platform, including: Based on the relative position information of the optical fiber breakpoint, determining the breakpoint position coordinates of the optical fiber breakpoint in the GIS system of the highway optical cable; The shortest path algorithm is used to generate an optimal path from the operation and maintenance starting point to the breakpoint location coordinates, and based on the optimal path, navigation guidance information is generated, the navigation guidance information including the travel direction, distance and turning point.

[0060] In this embodiment, the relative position information of the fiber breakpoint is obtained according to step S500, wherein the relative position information includes the interpolation distance and azimuth of the fiber breakpoint relative to the nearest identification point, and the identification information of the nearest identification point stores its geographical location information in the GIS system. Based on this, the geographical location information of the fiber breakpoint in the GIS system, i.e., the breakpoint position coordinates of the fiber breakpoint, is calculated. Specifically, the interpolation distance of the fiber breakpoint relative to the nearest identification point is recorded as d and the azimuth is recorded as θ, and the longitude of the geographical location information of the nearest identification point is recorded as Lon_A, and the latitude is recorded as Lat_A. According to the azimuth θ, the unit vector pointing from the nearest identification point to the fiber breakpoint can be calculated. Assuming that the north direction is 0 degrees and the east direction is 90 degrees, the unit vector (ΔLon, ΔLat) corresponding to the azimuth θ can be calculated by trigonometric functions. Multiply the interpolation distance d by the unit vector (ΔLon, ΔLat) to obtain the coordinate increment of the fiber break point relative to the nearest identification point, that is, the longitude increment ΔLon_B = d * ΔLon, and the latitude increment ΔLat_B = d * ΔLat of the fiber break point. Add the coordinate increment to the longitude and latitude of the nearest identification point to obtain the final coordinates of the fiber break point, that is, the longitude Lon_B = Lon_A + ΔLon_B, and the latitude Lat_B = Lat_A + ΔLat_B of the fiber break point.

[0061] In this embodiment, based on the breakpoint location data and in combination with the GIS system of the highway optical cable, the shortest path algorithm is used to generate the optimal path from the operation and maintenance starting point to the optical fiber breakpoint, and then generate navigation guidance information, which specifically includes the direction of travel, distance, and turning points, etc. Through the navigation guidance information, the optical fiber breakpoint, i.e., the optical cable fault point, can be navigated, which is convenient for maintenance personnel to find the precise optical cable fault point.

[0062] See also Figure 2 As shown, the present invention also provides a highway optical cable fault location system, the system comprising: The first processing module 201 is used to segment the optical cable along the expressway according to the expressway stakes, generate multiple optical cable segments, mark the optical cable information of each optical cable segment, and generate an optical cable basic database, wherein the optical cable information includes the starting stake number, the ending stake number, the optical cable length, the optical cable direction and the optical fiber parameters; The second processing module 202 is used to test the optical cable through an OTDR device, generate an OTDR test data set, and obtain a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; The third processing module 203 is used to match the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; The fourth processing module 204 is used to deploy multiple optical cable identification points along the highway, and mark identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; The fifth processing module 205 is used to associate and analyze the preliminary positioning result with the identification information to obtain the relative position information of the optical fiber breakpoint; The sixth processing module 206 is used to integrate the optical cable basic database, the OTDR test data set and the identification information into a visualization platform, and generate navigation guidance information for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

[0063] It is understandable that if Figure 1 The contents of the highway optical cable fault locating method embodiment shown in the figure are applicable to the highway optical cable fault locating system embodiment. The functions specifically implemented by the highway optical cable fault locating system embodiment are similar to those in the example shown in the figure. Figure 1 The highway optical cable fault location method embodiment shown is the same as that of the embodiment shown in FIG. Figure 1 The beneficial effects achieved by the embodiment of the highway optical cable fault locating method shown are also the same.

[0064] It should be noted that the information interaction, execution process and other contents between the above-mentioned systems are based on the same concept as the embodiment of the method of the present invention. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0065] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0066] See also Figure 3As shown, an embodiment of the present invention further provides a computer device 3, comprising: a memory 302 and a processor 301 and a computer program 303 stored in the memory 302. When the computer program 303 is executed on the processor 301, a highway optical cable fault locating method as described in any one of the above methods is implemented.

[0067] The computer device 3 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The computer device 3 may include, but is not limited to, a processor 301 and a memory 302. Those skilled in the art will appreciate that Figure 3 It is only an example of computer device 3 and does not constitute a limitation on computer device 3. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, it may also include input and output devices, network access devices, etc.

[0068] The processor 301 may be a central processing unit (CPU), or 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. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0069] In some embodiments, the memory 302 may be an internal storage unit of the computer device 3, such as a hard disk or memory of the computer device 3. In other embodiments, the memory 302 may also be an external storage device of the computer device 3, such as 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), etc. equipped on the computer device 3. Further, the memory 302 may also include both an internal storage unit of the computer device 3 and an external storage device. The memory 302 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory 302 may also be used to temporarily store data that has been output or is to be output.

[0070] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the method for locating a highway optical cable fault as described in any one of the above methods is implemented.

[0071] In this embodiment, if the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / computer device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, USB flash drive, mobile hard disk, disk or optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0072] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for locating a highway optical cable fault, characterized in that: include: Divide the optical cable along the expressway according to the expressway stakes to generate multiple optical cable segments, mark the optical cable information of each optical cable segment, and generate an optical cable basic database, wherein the optical cable information includes the starting stake number, the ending stake number, the optical cable length, the optical cable direction and the optical fiber parameters; Testing the optical cable by an OTDR device to generate an OTDR test data set, and obtaining a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; Matching the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; Deploy multiple optical cable identification points along the expressway, and mark identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; Correlate and analyze the preliminary positioning result with the identification information to obtain relative position information of the optical fiber breakpoint; The optical cable basic database, the OTDR test data set and the identification information are integrated into a visualization platform, and navigation guidance information is generated for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

2. The method according to claim 1, characterized in that The optical cable information for marking each optical cable segment includes: Marking each corner and direction change of each optical cable segment to form the optical cable direction of the optical cable segment; Mark the highway stake closest to the starting point of the optical cable as the starting stake number, and mark each highway stake from near to far, the starting stake number and the ending stake number of each section of the optical cable section being the stake numbers of the corresponding two adjacent highway stakes; From the starting point of the optical cable, mark the corresponding optical cable sheath length for each highway stake, and calculate the optical cable length between two adjacent highway stakes. The calculation formula of the optical cable length is as follows: ； Where L represents the length of the optical cable, i represents the highway stake number, Indicates the length of the optical cable sheath corresponding to the highway stake. Indicates the length of the optical cable between the starting point of the optical cable and the starting stake number of the highway.

3. The method according to claim 1, characterized in that The method of testing the optical cable by using an OTDR device to generate an OTDR test data set includes: The OTDR device emits an optical pulse signal for transmission in the optical fiber link, and records the test information of the OTDR device, wherein the test information includes the test time, the test parameters and the test curve; During the signal transmission process, if the optical pulse signal encounters an optical fiber breakpoint, an optical signal is generated; Determine the distance information of the optical fiber breakpoint according to the occurrence time and occurrence amplitude of the optical signal; An OTDR test data set is generated based on the test information and the distance information.

4. The method according to claim 3, characterized in that The step of obtaining a breakpoint information report of an optical fiber breakpoint based on the OTDR test data set includes: Using a fixed length segmentation method, the test curve in the OTDR test data set is divided into blocks to obtain a plurality of data blocks; Performing signal strength analysis on the data blocks to obtain abnormal signal characteristics in each of the data blocks; Associating the abnormal signal feature with the distance information in the OTDR test data set to obtain breakpoint association data; Determine the data block number to which the optical fiber breakpoint belongs based on the breakpoint association data and a preset signal attenuation threshold; A breakpoint information report is generated based on the abnormal signal characteristics, the data block number and the distance information.

5. The method according to claim 1, characterized in that The step of matching the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault includes: Matching and calculating the distance information in the breakpoint information report with the length of each section of the optical cable in the optical cable basic database to determine the optical cable section where the optical fiber breakpoint is located; According to the optical cable basic database, the stake number range of the optical fiber breakpoint is determined, and a preliminary positioning result is generated. The stake number range includes the starting stake number and the ending stake number of the optical cable segment where the optical fiber breakpoint is located.

6. The method according to claim 1, characterized in that The method of deploying a plurality of optical cable identification points along the expressway and marking identification information for each of the optical cable identification points, wherein the identification information includes the location data of the optical cable identification point and the optical cable information corresponding to the location, includes: Preliminarily segmenting each of the optical cable segments according to the geographic information data to obtain a plurality of optical cable segments; Using multi-source remote sensing image fusion technology to calculate the terrain complexity index of each of the optical cable segments; By analyzing historical meteorological data and geological exploration reports, the impact of natural disasters on optical cables is evaluated to obtain the natural disaster risk coefficient of each optical cable segment; Based on satellite positioning data, a heat map of the intensity of human activities along the optical cable is drawn to quantify the intensity of human activities in each of the optical cable sections; Calculating a comprehensive risk score for each of the optical cable segments based on the terrain complexity index, the natural disaster risk coefficient, and the intensity of human activities; Based on the comprehensive risk score, optical cable identification points are deployed in the optical cable segment, and identification information is marked for each of the optical cable identification points.

7. The method according to claim 3, characterized in that The correlating analysis of the preliminary positioning result with the identification information to obtain the relative position information of the optical fiber breakpoint includes: Constructing a spatial topological model corresponding to the optical cable, and mapping the position information of all optical cable identification points in the optical cable to the spatial topological model; In the spatial topology model, a test coordinate system is established with the OTDR test starting point as the origin and the test direction as the positive direction; Convert the distance information and the position information of the optical cable identification point into coordinate values ​​in the test coordinate system, and determine the position coordinates of the optical fiber breakpoint and the optical cable identification point in the spatial topology model; Searching for a plurality of optical cable identification points closest to the optical fiber breakpoint in the spatial topology model, marking the points as relative identification points, and obtaining position coordinates of the plurality of relative identification points; The Kriging interpolation algorithm is used to interpolate the spatial position relationship between the optical fiber breakpoint and the multiple relative identification points, obtain the distance and azimuth between the optical fiber breakpoint and the multiple relative identification points, and generate the relative position information of the optical fiber breakpoint.

8. The method according to claim 1, characterized in that The GIS system through the highway optical cable generates navigation guidance information for the optical fiber breakpoint on the visualization platform, including: Based on the relative position information of the optical fiber breakpoint, determining the breakpoint position coordinates of the optical fiber breakpoint in the GIS system of the highway optical cable; The shortest path algorithm is used to generate an optimal path from the operation and maintenance starting point to the breakpoint location coordinates, and based on the optimal path, navigation guidance information is generated, the navigation guidance information including the travel direction, distance and turning point.

9. A highway optical cable fault location system, characterized in that: include: The first processing module is used to segment the optical cable along the expressway according to the expressway stakes, generate multiple optical cable segments, mark the optical cable information of each optical cable segment, and generate an optical cable basic database, wherein the optical cable information includes the starting stake number, the ending stake number, the optical cable length, the optical cable direction and the optical fiber parameters; The second processing module is used to test the optical cable through an OTDR device, generate an OTDR test data set, and obtain a breakpoint information report of the optical fiber breakpoint based on the OTDR test data set; The third processing module is used to match the breakpoint information report with the optical cable information of each optical cable segment in the optical cable basic database to generate a preliminary positioning result of the optical cable fault; The fourth processing module is used to deploy multiple optical cable identification points along the expressway, and mark identification information for each of the optical cable identification points, wherein the identification information includes location data of the optical cable identification point and optical cable information corresponding to the location; A fifth processing module: used for associating and analyzing the preliminary positioning result with the identification information to obtain the relative position information of the optical fiber breakpoint; The sixth processing module is used to integrate the optical cable basic database, the OTDR test data set and the identification information into a visualization platform, and generate navigation guidance information for the optical fiber breakpoint on the visualization platform through the GIS system of the highway optical cable.

10. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 8 is implemented.

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