CN116886186B - GIS-based optical fiber fault detection system and application method thereof - Google Patents
GIS-based optical fiber fault detection system and application method thereof Download PDFInfo
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- CN116886186B CN116886186B CN202311053739.4A CN202311053739A CN116886186B CN 116886186 B CN116886186 B CN 116886186B CN 202311053739 A CN202311053739 A CN 202311053739A CN 116886186 B CN116886186 B CN 116886186B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 228
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 238000011835 investigation Methods 0.000 claims abstract description 6
- 238000000253 optical time-domain reflectometry Methods 0.000 claims abstract 14
- 238000010586 diagram Methods 0.000 claims description 64
- 230000002159 abnormal effect Effects 0.000 claims description 26
- 238000012876 topography Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 230000036541 health Effects 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 7
- 230000005856 abnormality Effects 0.000 claims description 6
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000003491 array Methods 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The invention relates to the technical field of optical fiber fault positioning, and discloses an optical fiber fault detection system based on GIS and an application method thereof, wherein the optical fiber fault detection system based on GIS comprises a control unit, a GIS module, an optical fiber sensor and an OTDR measuring module, wherein the optical fiber sensor is used for monitoring the state of an optical fiber, and the OTDR measuring module is used for measuring and positioning the distance of a fault point when the optical fiber breaks down; the GIS module is used for recording the virtual optical fiber line and the geographic information around the virtual optical fiber line. According to the invention, after the actual fault point is obtained, the actual fault point is taken as a base point, the region with errors is measured through on-site investigation, and the data recorded by the GIS is corrected by combining the measurement result of the OTDR measurement module, so that when the fault occurs again, the position of the fault point can be accurately judged according to the corrected data, and the maintenance efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of optical fiber fault positioning, in particular to an optical fiber fault detection system based on GIS and an application method thereof.
Background
The optical fiber communication has the advantages of high efficiency, light weight, large information transmission amount, low consumption and the like, and is applied to various communication technical fields including telephone, computer communication, cloud data accessibility, internet use and the like. Therefore, the safety of the optical fiber is ensured to directly influence the real-time performance, the reliability and the accuracy of the communication system. However, the optical fiber is very prone to faults during laying and working due to the disadvantages of brittle texture, complex structure of connection points, low mechanical strength and the like.
In the prior art, fault monitoring of an optical fiber is generally carried out through an OTDR (optical time domain reflectometer), according to the back scattering and Fresnel reverse principle of light, the OTDR utilizes back scattering light generated when light propagates in the optical fiber to acquire attenuation information, can realize measurement of optical fiber attenuation, joint loss, optical fiber fault point positioning, knowing loss distribution condition of the optical fiber along the length and the like, is an indispensable tool in optical fiber construction, maintenance and monitoring, and can only obtain the optical fiber linear distance between the optical fiber fault point position and the detection point position when the OTDR is detected, and does not have geographical position attribute; due to the practical engineering problems of the optical fiber laying mode, the optical fiber wiring, the optical fiber reservation and the like, the optical fiber fault straight line distance cannot be matched with the actual geographic position of the optical fiber fault point, and the maintenance efficiency of the optical fiber is greatly affected.
Disclosure of Invention
The invention provides a GIS-based optical fiber fault detection system and an application method thereof, which have the beneficial effect of higher positioning precision, and solve the problems that the optical fiber fault linear distance cannot be matched with the actual geographic position of an optical fiber fault point and greatly influence the maintenance efficiency of an optical fiber due to the real engineering problems of an optical fiber laying mode, optical fiber wiring, optical fiber reservation and the like in the background art.
The invention provides the following technical scheme: the optical fiber fault detection system based on the GIS comprises a control unit, a GIS module, an optical fiber sensor and an OTDR measurement module, wherein the optical fiber sensor is used for monitoring the state of an optical fiber, and the OTDR measurement module is used for measuring and positioning the distance of a fault point when the optical fiber breaks down;
the GIS module is used for recording the virtual optical fiber line and the geographic information around the virtual optical fiber line;
The control unit is used for controlling the GIS module, the optical fiber sensor and the OTDR measuring module. An application method adopting the GIS-based optical fiber fault detection system comprises the following steps:
s1, monitoring in real time: monitoring the working state of the optical fiber in real time through an optical fiber sensor, and when an abnormality occurs, sending the abnormality information to a control unit by the optical fiber sensor;
S2, fault point tracking: the control unit starts an OTDR measuring module after receiving abnormal information sent by the optical fiber sensor, the optical fiber is detected through the OTDR measuring module, and the position of a fault point can be obtained preliminarily through the OTDR measuring module;
S3, GIS positioning: the method comprises the steps of pre-measuring information collection, after completion of optical fiber construction, guiding an optical fiber line into a GIS module according to an optical fiber line completion diagram, and then drawing a virtual optical fiber line distribution diagram on a map of the GIS module according to the optical fiber line completion diagram;
s4, actual fault point calibration: the optical fiber is subjected to investigation according to the fault points displayed on the GIS map, and the actual fault points are positioned and marked on the GIS map after being detected;
S5, data correction: and according to the detection result of the OTDR measuring module, the fault point displayed on the GIS map and the position of the actual fault point, the error factors are found out and recorded into the error factor database by analyzing the information.
Optionally, the step S3 specifically further includes:
Segmenting an optical fiber line distribution road map in a GIS module, wherein each segment is a straight line, and the connection point between the segments is a node;
At the beginning end of the optical fiber, the actual length of the optical fiber between each node is measured by an OTDR measuring module, the measured result is that the actual length of the optical fiber of each node is marked as L, the straight line distance between each node is marked as S in the actual geographic position through the optical fiber line distribution diagram in the GIS module, and an average distribution value is marked as S/L between two nodes by calculating the measured result;
and displaying fault points on a map of the GIS module according to the detection result of the OTDR measurement module combined with the pre-measurement information.
Optionally, the specific steps of data correction are as follows:
Defining an area according to the detection result of the OTDR measuring module, finding out an actual fault point to be marked as H, uploading the H point to the GIS module, marking the H point on an optical fiber line distribution diagram in the GIS module, and marking the H point as H;
If the H-point is located at two nodes: and between the nodes a and b, at the point H, measuring the actual length of the optical fiber between the nodes a and H through an OTDR measuring module, marking the measured result as La and Lb, and comparing the measured actual length of the optical fiber with the distance between each node on the optical fiber line distribution diagram and the point H.
Optionally, the specific steps of comparing the measured actual fiber length with the distance from each node on the fiber optic line distribution diagram to the point H are as follows,
Firstly, according to geographic information recorded on a GIS module and marks of h points, distances from a node a to the mark point h and distances from a node b to the mark point h are obtained and marked as Sa and Sb, then, arrays of the actual node a, the actual node b and the mark point h are compared, and local average distribution values are obtained and marked as [ Sa/h ] and [ Sb/h ].
Optionally, the finding out and recording the error factor into the error factor database includes firstly obtaining the actual optical fiber length between the node a and the node b according to the pre-measured information, marking La-b, obtaining the straight line distance between the node a and the node b through the information recorded by the GIS module, marking Sa-b, obtaining the error value by using [ La-b ] - [ Sa-b ], screening the optical fiber between the node a and the node b according to the error value, and marking the special area with the allowance for the optical fiber;
Thereby acquiring a target measurement section, and recording the target measurement section as a current optical fiber.
Optionally, the data correction includes,
Acquiring a plane state distribution diagram of an original optical fiber at the water bottom;
acquiring a plane state distribution diagram of the existing optical fiber at the water bottom;
Comparing the plane state distribution diagram of the original optical fiber at the water bottom with the plane state distribution diagram of the existing optical fiber at the water bottom, obtaining an abnormal section in the existing optical fiber, overhauling the abnormal section and inquiring a fault point.
Optionally, if the fault point is not in the abnormal section; then:
according to the plane state distribution diagram of the current optical fiber at the water bottom, a plurality of separation points are arranged on the current optical fiber, and the separation points are marked as e1 and e2.;
Acquiring local longitudinal distribution diagrams of underwater topography of two adjacent separation points, and splicing all the local longitudinal distribution diagrams to form a topography model;
Acquiring the trend of the existing optical fiber on the terrain model between adjacent separation points, and forming a longitudinal trend schematic diagram of the existing optical fiber;
Mapping the longitudinal trend schematic diagram of the existing optical fiber with the underwater topography model through mapping points in a one-to-one correspondence manner, and forming a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
Obtaining abnormal inflection points in a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
The optical fiber position adjacent to the abnormal section and formed with the topographic model is regarded as a suspicious region, and the optical fiber position at the peak point position of the suspicious region is regarded as an abnormal inflection point;
The suspicious region determination specifically includes:
The method comprises the steps of obtaining peaks and troughs in a longitudinal trend schematic diagram of an existing optical fiber, calculating peak heights of the peaks by taking the lowest trough as an initial surface, obtaining average peak heights, and regarding peaks which are larger than the average peak heights and are adjacent to abnormal sections as suspicious areas.
Optionally, the control unit comprises a user registration login module, an optical fiber line management module, a monitoring mode setting module, a history fault query module, a log file query module, an optical fiber health evaluation module and an error factor database;
the user registration login module is used for realizing registration of user account passwords and is used for user login;
the optical fiber line management module is used for adding optical fiber line parameter information, including line distance and line name;
The monitoring mode setting module is used for monitoring hardware equipment of the lower computer;
the history fault inquiry is used for inquiring related history fault inquiry of the optical fiber;
the log file inquiring module is used for inquiring log files of the working state of the software;
the optical fiber health evaluation module is used for evaluating the health degree of the optical fiber line;
the error factor database is used for recording error factors affecting fault positioning accuracy.
The invention has the following beneficial effects:
1. According to the GIS-based optical fiber fault detection system and the application method thereof, an error factor database is established, when fault location is carried out, firstly, fault points are pre-located through an OTDR measurement module, then the actual geographic positions of the fault points can be rapidly judged according to pre-location information and geographic data recorded by the GIS, after a maintainer reaches a fault place, the actual fault points are obtained through on-site troubleshooting, after the actual fault points are obtained, the actual fault points are taken as base points, the error-containing area is measured through on-site investigation, the data recorded by the GIS are corrected according to the measurement result of the OTDR measurement module, and when the fault occurs again, the positions of the fault points can be accurately judged according to the corrected data, so that the maintenance efficiency is greatly improved.
2. According to the GIS-based optical fiber fault detection system and the application method thereof, the optical fiber fault is positioned in a mode of combining OTDR detection with GIS, an optical fiber fault point can be initially acquired through an OTDR measurement module, then the fault position can be found quickly by a maintainer by combining geographic information recorded by the GIS, and in order to further reduce errors, the technical scheme segments an optical fiber line and then processes data in a segmented mode, so that errors are effectively reduced on the whole, and positioning accuracy is further improved.
Drawings
Fig. 1 is a block diagram of a system architecture of the present invention.
Fig. 2 is a diagram of a virtual fiber circuit displayed by the GIS module of the present invention.
FIG. 3 is a schematic diagram showing the comparison of the original fiber and the existing fiber.
FIG. 4 is a schematic view of the longitudinal distribution of the present optical fiber over the topography of the water bottom.
Fig. 5 is a schematic structural diagram of an electronic device according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 2, the invention discloses a fiber fault detection system based on a GIS, which comprises a control unit, a GIS module, a fiber sensor and an OTDR measurement module, wherein the fiber sensor is used for monitoring the state of a fiber, and the OTDR measurement module is used for measuring and positioning the distance of a fault point when the fiber breaks down;
the GIS module is used for recording geographic information of the periphery of the virtual optical fiber line;
The control unit is used for controlling the GIS module, the optical fiber sensor and the OTDR measuring module, and a user realizes man-machine interaction with the GIS module, the optical fiber sensor and the OTDR measuring module through the control unit.
The control unit comprises a user registration login module, an optical fiber line management module, a monitoring mode setting module, a historical fault inquiring module, a log file inquiring module, an optical fiber health evaluation module and an error factor database;
the user registration login module is used for realizing registration of user account passwords and is used for user login;
the optical fiber line management module is used for adding optical fiber line parameter information, including line distance and line name;
The monitoring mode setting module is used for monitoring hardware equipment of the lower computer;
the history fault inquiry is used for inquiring the related history fault inquiry of the optical fiber, when a fault occurs, the control unit stores fault information, and the fault record can be inquired through the log file inquiry module;
the log file inquiry module is used for inquiring log files of the working state of the software;
The optical fiber health evaluation module is used for evaluating the health degree of the optical fiber line;
The error factor database is used for recording error factors affecting fault positioning accuracy.
The optical fiber health assessment module collects temperature and humidity information of the optical fiber according to the optical fiber sensor, and assesses the health degree of an optical fiber line according to the information.
According to the technical scheme, an error factor database is established, when fault location is carried out, firstly, fault points are pre-located through an OTDR measuring module, then the actual geographic positions of the fault points can be rapidly judged according to pre-location information and geographic data recorded in a GIS, after a maintainer reaches a fault place, the actual fault points are obtained through on-site investigation, after the actual fault points are obtained, the error-containing area is measured and recorded into the error factor database through on-site investigation, the measurement results of the OTDR measuring module are combined to correct the data recorded in the GIS, and when the fault occurs again, the positions of the fault points can be accurately judged according to the corrected data and the data recorded in the error factor database, so that the maintenance efficiency is greatly improved.
Example 2
The present embodiment is an explanation based on embodiment 1, and in particular, please refer to fig. 1 to 2, an application method of a GIS-based optical fiber fault detection system includes the following steps:
s1, monitoring in real time: monitoring the working state of the optical fiber in real time through an optical fiber sensor, and when an abnormality occurs, sending the abnormality information to a control unit by the optical fiber sensor;
S2, fault point tracking: the control unit starts an OTDR measuring module after receiving abnormal information sent by the optical fiber sensor, the optical fiber is detected through the OTDR measuring module, and the position of a fault point can be obtained preliminarily through the OTDR measuring module;
S3, GIS positioning: the method comprises the steps of pre-measuring information collection, after completion of optical fiber construction, guiding an optical fiber line into a GIS module according to an optical fiber line completion diagram, and then drawing a virtual optical fiber line distribution diagram on a map of the GIS module according to the optical fiber line completion diagram;
Segmenting an optical fiber line distribution road map in a GIS module, wherein each segment is a straight line, and the connection point between the segments is a node;
At the beginning end of the optical fiber, the actual length of the optical fiber between each node is measured by an OTDR measuring module, the measured result is that the actual length of the optical fiber of each node is marked as L, the straight line distance between each node is marked as S in the actual geographic position through the optical fiber line distribution diagram in the GIS module, and an average distribution value is marked as S/L between two nodes by calculating the measured result;
According to the pre-measured information, combining with the detection result of the OTDR measuring module, displaying fault points on a map of the GIS module;
s4, actual fault point calibration: the constructor checks the optical fiber according to the fault points displayed on the GIS map, and positions and marks the actual fault points on the GIS map after detecting the actual fault points;
S5, data correction: and according to the detection result of the OTDR measuring module, the fault point displayed on the GIS map and the position of the actual fault point, the error factors are found out and recorded into the error factor database by analyzing the information.
The error is caused by inaccurate completion data of the optical fiber line, and the fault points cannot be accurately measured according to the completion data of the line, which is not consistent with the actual condition because the accumulated data is not noticed or the recorded data has low credibility in the line construction, and the distribution of the optical fiber in reality is not straight and uniform, and the distribution line diagram of the optical fiber line in the GIS module is the line diagram in an ideal state, so that the error exists in the GIS module in the process of inputting information, and the error is difficult to eliminate and can be reduced as far as possible;
Under normal conditions, the optical fiber length between the optical fiber starting end and the optical fiber terminal end can be measured through an OTDR measuring module, errors are larger and larger along with the increase of the length of the whole line, the technical scheme can effectively reduce the errors by segmenting the optical fiber line and then processing data through segmentation, and concretely comprises the steps of firstly segmenting an optical fiber line distribution diagram in a GIS module, marking inflection points among line segments as a node, measuring the length of the line among the nodes through the OTDR measuring module to measure the actual distribution condition of the optical fiber among the nodes, obtaining an L value through line measurement among the nodes, knowing that the straight line distance among the nodes is marked as S in the actual geographic position through the optical fiber line distribution diagram in the GIS module,
Taking fig. 2 as an example, there are three nodes a, b and c from the optical fiber starting end to the optical fiber terminal end, wherein the actual geographical position between the nodes a and b is 5000m, the optical fiber length between the nodes a and b measured by the OTDR measurement module is 5500m, in an ideal state, the optical fibers 5500m can be uniformly distributed within the length of 5000m, then 0.9m of the optical fibers are distributed within the range of 1m between the nodes a and b, after the fault, if the measured result by the OTDR measurement module is 5200m, the fault point is located at 4680m recorded on the GIS module through conversion 5200x 0.9=4680 m, and the maintenance personnel can reach the designated position according to the information recorded by the GIS module.
If the line is not segmented, the further the line is theoretically away from the measuring end of the OTDR measuring module, the larger the error is due to accumulation.
The specific steps of data correction in step S5 are:
Firstly, coming to the site, defining an area according to the detection result of an OTDR measurement module, then finding out an actual fault point to be marked as H, uploading the H point to a GIS module, marking the H point on an optical fiber line distribution diagram in the GIS module, and marking the H point as H;
If the H-point is located at two nodes: and between the nodes a and b, at the point H, measuring the actual length of the optical fiber between the nodes a and H through an OTDR measuring module, marking the measured result as La and Lb, and comparing the measured actual length of the optical fiber with the distance between each node on the optical fiber line distribution diagram and the point H.
The specific steps of comparing the H point with La and Lb are as follows,
Firstly, according to geographic information recorded on a GIS module and marks of h points, distances from a node a to the mark point h and distances from a node b to the mark point h are obtained and marked as Sa and Sb, then, arrays of the actual node a, the actual node b and the mark point h are compared, and local average distribution values are obtained and marked as [ Sa/h ] and [ Sb/h ].
Finding out error factors and recording the error factors into an error factor database, wherein the error factors comprise the steps of firstly acquiring actual optical fiber lengths between a node a and a node b according to preset measurement information, marking La-b, acquiring the linear distance between the node a and the node b according to information recorded by a GIS module, marking Sa-b, obtaining error values by [ La-b ] - [ Sa-b ], screening optical fibers between the node a and the node b according to the error values, and marking a special region with allowance on the optical fibers;
Thereby acquiring a target measurement section, and recording the target measurement section as a current optical fiber.
In order to further improve positioning accuracy, after an actual fault point is found, the technical scheme also uses the actual fault point as a base point to correct data, specifically, taking fig. 2 as an example, if the fault point is located between a node a and a node b, the actual length of an optical fiber between the node b and the node H is measured through an OTDR measurement module, the measurement result is la=2900 m and lb=2600 m, then the distance from the node a to a mark point H and the distance from the node b to the mark point H are obtained according to the information of the GIS module, the measurement result is sa=2600 and sb=2400, and then the measurement result is converted by 2600 ++2900= 0.896,2400 +0=0.923, and the measurement result is recorded in an error factor database.
According to the data, taking the H point as a boundary, when a fault occurs, firstly positioning the position of the fault point through an OTDR measuring module, after detecting the position of the fault point, judging which two nodes the fault point is positioned between according to the pre-measured data, and then converting the measured values according to the [ S/L ] value between the nodes, wherein the data is corrected according to the fault point because the fault occurs between the nodes a and b, so that after judging that the fault point occurs between the nodes a and b, further judging the line between the nodes a and b is needed;
According to the information in the error factor database, when the detected new fault point is located between the node a and the node H, the measured value is multiplied by 0.896, when the detected new fault point is located between the node b and the node H, the measured value is multiplied by 0.923, under normal conditions, the [ S/L ] value between the node a and the node b is 5000/5500=0.909, and the technical scheme re-measures and divides the line between the nodes according to the old fault point, so that the error is further reduced, and the positioning precision of the fault is improved.
The actual length of the optical fiber has larger errors with the virtual optical fiber circuit, and the accuracy of the factors can directly influence the positioning accuracy of the barrier points mainly because a large number of elbows, the disc length of the residual optical fiber in the connector box, the disc length of the optical fiber at various special points, the fluctuation of the optical fiber along with the topography and the like exist in the actual optical fiber circuit.
Example 3
With reference to fig. 1-4, this embodiment is a further extension of embodiment 2, and after determining that an optical fiber is present, to save inspection time, the method further includes the following steps:
acquiring a plane state distribution diagram of an original optical fiber at the water bottom;
acquiring a plane state distribution diagram of the existing optical fiber at the water bottom; can be obtained by a sonar system on site;
Comparing the plane state distribution diagram of the original optical fiber at the water bottom with the plane state distribution diagram of the existing optical fiber at the water bottom to obtain an abnormal section in the existing optical fiber, and overhauling the abnormal section to inquire a fault point;
If the fault point is not in the abnormal section; then:
according to the plane state distribution diagram of the current optical fiber at the water bottom, a plurality of separation points are arranged on the current optical fiber, and the separation points are marked as e1 and e2.;
Acquiring local longitudinal distribution diagrams of underwater topography of two adjacent separation points, and splicing all the local longitudinal distribution diagrams to form a topography model;
Acquiring the trend of the existing optical fiber on the terrain model between adjacent separation points, and forming a longitudinal trend schematic diagram of the existing optical fiber;
Mapping the longitudinal trend schematic diagram of the existing optical fiber with the underwater topography model through mapping points in a one-to-one correspondence manner, and forming a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
Obtaining abnormal inflection points in a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
The optical fiber position adjacent to the abnormal section and formed with the topographic model is regarded as a suspicious region, and the optical fiber position at the peak point position of the suspicious region is regarded as an abnormal inflection point;
The suspicious region determination specifically includes:
The method comprises the steps of obtaining peaks and troughs in a longitudinal trend schematic diagram of an existing optical fiber, calculating peak heights of the peaks by taking the lowest trough as an initial surface, obtaining average peak heights, and regarding peaks which are larger than the average peak heights and are adjacent to abnormal sections as suspicious areas.
The position where the optical fiber obviously breaks down, namely the position of the abnormal section, can be judged through the mode, and the other positions of the optical fiber are damaged in the complex underwater topography due to the movement of the position of the optical fiber, namely the position of the abnormal inflection point.
Example 4
Referring to fig. 5, an electronic device includes a processor and a memory communicatively connected to the processor;
The memory stores instructions executable by the processor to enable the processor to perform the GIS-based fiber fault detection system and method of use thereof.
It should be noted that:
More specific examples of a computer readable storage medium may include a portable computer diskette, a hard disk, an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device, the computer-readable medium being embodied in the electronic device; or may exist alone without being incorporated into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, enable the electronic device to implement the solutions provided by the method embodiments described above.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, or combinations thereof, and the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (6)
1. GIS-based optical fiber fault detection system, its characterized in that: the optical fiber monitoring device comprises a control unit, a GIS module, an optical fiber sensor and an OTDR measuring module, wherein the optical fiber sensor is used for monitoring the state of an optical fiber, and the OTDR measuring module is used for measuring and positioning the distance of a fault point when the optical fiber breaks down;
the GIS module is used for recording the virtual optical fiber line and the geographic information around the virtual optical fiber line;
The control unit is used for controlling the GIS module, the optical fiber sensor and the OTDR measuring module;
The optical fiber fault detection system performs the steps of:
s1, monitoring in real time: monitoring the working state of the optical fiber in real time through an optical fiber sensor, and when an abnormality occurs, sending the abnormality information to a control unit by the optical fiber sensor;
S2, fault point tracking: the control unit starts an OTDR measuring module after receiving abnormal information sent by the optical fiber sensor, the optical fiber is detected through the OTDR measuring module, and the position of a fault point can be obtained preliminarily through the OTDR measuring module;
S3, GIS positioning: the method comprises the steps of pre-measuring information collection, after completion of optical fiber construction, guiding an optical fiber line into a GIS module according to an optical fiber line completion diagram, and then drawing a virtual optical fiber line distribution diagram on a map of the GIS module according to the optical fiber line completion diagram;
s4, actual fault point calibration: the optical fiber is subjected to investigation according to the fault points displayed on the GIS map, and the actual fault points are positioned and marked on the GIS map after being detected;
s5, data correction: according to the detection result of the OTDR measuring module, the fault point displayed on the GIS map and the position of the actual fault point, the error factors are found out and recorded into an error factor database by analyzing the information;
S3, the method specifically further comprises the following steps:
Segmenting an optical fiber line distribution road map in a GIS module, wherein each segment is a straight line, and the connection point between the segments is a node;
At the beginning end of the optical fiber, the actual length of the optical fiber between each node is measured by an OTDR measuring module, the measured result is that the actual length of the optical fiber of each node is marked as L, the straight line distance between each node is marked as S in the actual geographic position through the optical fiber line distribution diagram in the GIS module, and an average distribution value is marked as S/L between two nodes by calculating the measured result;
According to the pre-measured information, combining with the detection result of the OTDR measuring module, displaying fault points on a map of the GIS module;
If the fault point is not in the abnormal section; then:
according to the plane state distribution diagram of the current optical fiber at the water bottom, a plurality of separation points are arranged on the current optical fiber, and the separation points are marked as e1 and e2.;
Acquiring local longitudinal distribution diagrams of underwater topography of two adjacent separation points, and splicing all the local longitudinal distribution diagrams to form a topography model;
Acquiring the trend of the existing optical fiber on the terrain model between adjacent separation points, and forming a longitudinal trend schematic diagram of the existing optical fiber;
Mapping the longitudinal trend schematic diagram of the existing optical fiber with the underwater topography model through mapping points in a one-to-one correspondence manner, and forming a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
Obtaining abnormal inflection points in a longitudinal distribution schematic diagram of the existing optical fiber on the underwater topography;
The optical fiber position adjacent to the abnormal section and formed with the topographic model is regarded as a suspicious region, and the optical fiber position at the peak point position of the suspicious region is regarded as an abnormal inflection point;
The suspicious region determination specifically includes:
The method comprises the steps of obtaining peaks and troughs in a longitudinal trend schematic diagram of an existing optical fiber, calculating peak heights of the peaks by taking the lowest trough as an initial surface, obtaining average peak heights, and regarding peaks which are larger than the average peak heights and are adjacent to abnormal sections as suspicious areas.
2. An application method applied to the GIS-based optical fiber fault detection system in claim 1, which is characterized in that the specific steps of data correction are as follows:
Defining an area according to the detection result of the OTDR measuring module, finding out an actual fault point to be marked as H, uploading the H point to the GIS module, marking the H point on an optical fiber line distribution diagram in the GIS module, and marking the H point as H;
If the H-point is located at two nodes: and between the nodes a and b, at the point H, measuring the actual length of the optical fiber between the nodes a and H through an OTDR measuring module, marking the measured result as La and Lb, and comparing the measured actual length of the optical fiber with the distance between each node on the optical fiber line distribution diagram and the point H.
3. The method for applying a GIS-based optical fiber fault detection system according to claim 2, wherein: the specific steps of comparing the measured actual fiber length with the distance from each node on the fiber line distribution diagram to the point H are as follows,
Firstly, according to geographic information recorded on a GIS module and marks of h points, distances from a node a to the mark point h and distances from a node b to the mark point h are obtained and marked as Sa and Sb, then, arrays of the actual node a, the actual node b and the mark point h are compared, and local average distribution values are obtained and marked as [ Sa/h ] and [ Sb/h ].
4. The method for applying a GIS-based optical fiber fault detection system according to claim 2, wherein: the steps of finding out error factors and recording the error factors into an error factor database comprise firstly obtaining actual optical fiber lengths between a node a and a node b according to preset measurement information, marking La-b, obtaining the linear distance between the node a and the node b according to information recorded by a GIS module, marking Sa-b, obtaining error values by [ La-b ] - [ Sa-b ], screening optical fibers between the node a and the node b according to the error values, and marking a special area with allowance on the optical fibers;
Thereby acquiring a target measurement section, and recording the target measurement section as a current optical fiber.
5. The method for applying a GIS-based optical fiber fault detection system according to claim 4, wherein: the data modification may include the steps of,
Acquiring a plane state distribution diagram of an original optical fiber at the water bottom;
acquiring a plane state distribution diagram of the existing optical fiber at the water bottom;
Comparing the plane state distribution diagram of the original optical fiber at the water bottom with the plane state distribution diagram of the existing optical fiber at the water bottom, obtaining an abnormal section in the existing optical fiber, overhauling the abnormal section and inquiring a fault point.
6. The method for applying a GIS-based optical fiber fault detection system according to claim 2, wherein: the control unit comprises a user registration login module, an optical fiber line management module, a monitoring mode setting module, a history fault inquiring module, a log file inquiring module, an optical fiber health evaluation module and an error factor database;
the user registration login module is used for realizing registration of user account passwords and is used for user login;
the optical fiber line management module is used for adding optical fiber line parameter information, including line distance and line name;
The monitoring mode setting module is used for monitoring hardware equipment of the lower computer;
the history fault inquiry is used for inquiring related history fault inquiry of the optical fiber;
the log file inquiring module is used for inquiring log files of the working state of the software;
the optical fiber health evaluation module is used for evaluating the health degree of the optical fiber line;
the error factor database is used for recording error factors affecting fault positioning accuracy.
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