CN114362814A - GIS map-based display method and monitoring system for optical cable positioning points - Google Patents
GIS map-based display method and monitoring system for optical cable positioning points Download PDFInfo
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- CN114362814A CN114362814A CN202210031850.2A CN202210031850A CN114362814A CN 114362814 A CN114362814 A CN 114362814A CN 202210031850 A CN202210031850 A CN 202210031850A CN 114362814 A CN114362814 A CN 114362814A
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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
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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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
- H04B10/0791—Fault location on the transmission path
Abstract
The invention discloses a display method of GIS map optical cable positioning points, which comprises the following steps: (1) acquiring locating point information; (2) obtaining the distance from a positioning point to the starting point of each link; (3) obtaining the distance from a positioning point to the end point of each link; (4) and displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on a GIS map. The invention also discloses an optical cable monitoring system based on the GIS map. According to the invention, managers can click any point on an optical cable section in a GIS map to display the accurate position information of the positioning point, and can display detailed information of the positioning point, such as a machine room and a cross connecting cabinet which are far away from a starting point or a terminal point of an optical cable in real time; the position of a fault point can be accurately displayed on an optical cable line segment in the GIS; the method can help the administrator to quickly master the number of optical cables on the route, the detailed information of each optical cable, the number of all links using the route and the detailed information of each link.
Description
Technical Field
The invention relates to a display method and a monitoring system for positioning points, in particular to a display method and a monitoring system for optical cable positioning points based on a GIS map.
Background
Optical cable communication has the advantages of long communication distance, high transmission speed, low communication loss, strong anti-interference capability and the like, and is widely applied to communication industry in China. However, due to the vulnerability of the optical cable itself, the instability of the external environment, and the influence of human factors, high-quality and high-efficiency monitoring and maintenance of the optical cable path are required. Currently, numerous systems have emerged for monitoring telecommunication cables and reporting cable failure points.
Patent CN106330306A discloses a method for displaying OTDR measurement fault points in a GIS map by an optical cable fault online monitoring system. The method is characterized in that a preset fault locator is installed in advance, and the approximate position (between 2 preset points) of a fault point is obtained by comparing the measuring result of the OTDR with the distance information of a calibration locator. The disadvantage is that the display position of the fault point in the GIS map is between 2 preset points. The accurate geographical position of the GIS cable cannot be displayed on the GIS cable segment. And the field maintenance personnel can only search the fault position of the optical cable step by step along the line among the 2 fault locators, and if the distance between the two fault locators is longer, the maintenance time cost is higher. Another disadvantage is that in the daily system management, the manager cannot acquire and display the accurate position information of any positioning point on the optical cable map from the starting point or the end point of the optical cable in real time on the GIS page, including displaying the optical cable link information, which is very important for the field maintenance personnel.
Patent CN111404601A discloses a method for accurately positioning the physical position of an optical cable. The optical cable is selected on the GIS map to search the route bearing facility or directly select the route bearing facility, and the position information relative to the selected route bearing facility is input to determine the position of the actual optical cable position on the GIS map. The disadvantages are that an information point corresponding to the distance of the starting end needs to be marked at each set length interval of the actual optical cable, and the input position information is relative to the selected bearing facility on the optical cable route. In everyday use, a cable link may use multiple cables, and not every cable start has a monitoring device. And the administrator cannot mark the fault position on a certain optical cable in the link according to the fault point distance reported by the link test result.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a display method of an optical cable positioning point based on a GIS map, which solves the problem that any physical position of an optical cable route can not be accurately calculated and displayed at present.
The invention provides an optical cable monitoring system based on a GIS map, which solves the problem that any physical position of an optical cable route cannot be accurately calculated and displayed at present.
The technical scheme is as follows: the invention discloses a display method of an optical cable positioning point based on a GIS map, which comprises the following steps:
(1) acquiring locating point information;
(2) obtaining the distance from a positioning point to the starting point of each link;
(3) obtaining the distance from a positioning point to the end point of each link;
(4) and displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on a GIS map.
And (2) taking the fault point monitored by the OTDR in the step (1) as a positioning point, or obtaining the positioning point by clicking peripheral equipment.
The positioning point comprises a route bearing facility and an optical cable section, wherein the route bearing facility comprises a machine room, a cross connecting box, a fiber distribution box and a tower tube well.
If the positioning point is a route bearing facility, the distance from the positioning point to the starting point of the link is calculated as follows:
(21a) reading positioning points and acquiring positioning point information;
(22a) acquiring an optical cable section of a route containing a positioning point on a GIS map;
(23a) traversing the obtained optical cable sections, reading the link table and sequencing the links to obtain complete links where the optical cable sections are located;
(24a) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of a complete link (the sum of lengths of all optical cable sections in the link) allLinkLength and the length of an optical cable section before the sequence of the current optical cable section in the complete link, namely preLinkLength;
(25a) traversing each resource point on the current optical cable segment route; calculating the distance preCsLength of the optical cable segment from a starting machine room to an anchor point;
(26a) adding the total length of the optical cable segments before the current optical cable segment sequence in the complete link to the distance from the starting point machine room to the positioning point of the optical cable segment to obtain the distance from the positioning point to the starting point of the link:
toStartLength＝preLinkLength+preCsLength。
if the positioning point is the optical cable segment, the distance between the positioning point and the starting point of the link is calculated as follows:
(21b) obtaining the coordinate (lat) nearest to the point on the optical cable route according to the coordinates of the positioning point1，lng1) And assigning a given locus;
(22b) according to the routing sequence of the optical cable, coordinates of two adjacent resource points are taken out every time, the coordinates are converted into plane coordinates such as mercator coordinates or pixel coordinates, whether the locating point is located on a line segment formed by the two adjacent points is judged, and front and rear resource points P1 and P2 of the locating point are obtained;
(23b) and acquiring P1 and P2 optical cable segments contained in all routes on the GIS map.
(24b) Traversing the obtained optical cable sections, reading a link table, sequencing links and the like, and obtaining complete links where the optical cable sections are located;
(25b) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of the complete link and the length sum of the optical cable sections before the current optical cable section sequence in the complete link;
(26b) traversing each resource point on the current optical cable segment route, and calculating the distance from the starting machine room to the previous resource point P1 of the optical cable segment; calculating the distance between the selected positioning point on the optical cable and the front resource point P1 through latitude and longitude; adding the two distances into the distance from the starting point to the selected positioning point of the current optical cable segment;
(27b) and adding the total length of the optical cable sections before the current optical cable section sequence and the distance from the starting point of the current optical cable section to the selected positioning point, namely the distance from the positioning point to the starting point of the optical cable link.
In step (22b), the vector operation principle is applied to determine whether the anchor point is located on a line segment formed by two adjacent resource points, the set anchor point is P (x, y), and the two adjacent resource points are P1(x, y) respectively1，y1)、P2(x2，y2) The basis of the point P on the straight line consisting of P1 and P2 is: (P-P1) × (P2-P1) ═ 0, note xmin＝min{x1，x2}，xmax＝max{x1，x2}，ymin＝min{y1，y2}，ymax＝max{y1，y2}; judgment of xmin≤x≤xmax&&ymin≤y≤ymaxIf true, point P is on the segment consisting of P1 and P2.
Calculating the distance between the positioning point on the optical cable and the front resource point in the step (26b), and setting a position point coordinate (lat)1，lng1) Coordinates of previous resource points (lat)2，lng2) R is 6378.137Km, the radius length of the earth; the applied geographic coordinate calculation formula is as follows:
and (3) subtracting the distance from the positioning point to the starting point of the link from the total length of the link to obtain the distance from the positioning point to the end point of the link.
When the fault point monitored by the OTDR is used as a positioning point, the method comprises the following steps:
comparing the OTDR detection result with the complete length of the test link, and if the length is smaller than the complete length, determining that the link fails;
after receiving the OTDR fault point report, the system compares the distances from each bearing facility to the starting point of the test link to obtain the position of the fault point;
if the fault point is on the bearing facility, marking the fault point on the bearing facility on the map, and reporting the distance L from the fault point to the starting point and the ending point of the link;
if the fault point is located between two bearing facilities, obtaining two bearing facilities and the distance L from each bearing facility to the starting point of the link1、L2Rear (L)1＜L2) Using the formula
And obtaining the proportion of the distance between the fault point and the two bearing facilities, and marking the accurate position of the fault point on a map.
The optical cable monitoring system based on the GIS comprises a line resource management module, an equipment management module, an OTDR test module and an optical cable map module; the line resource module manages the bearing facilities; the equipment management module manages the cable monitoring equipment; the OTDR test module judges whether a fault point exists and acquires fault point position information; the optical cable map module displays the optical cable route and the route bearing facility on a GIS map according to longitude and latitude coordinate information recorded in optical cable construction data; and displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on the GIS map.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
(1) under the situation of daily system management and maintenance, managers can click any point on an optical cable segment in a GIS map to display the accurate position information of the positioning point, and can display detailed information of the positioning point, such as a machine room and a cross connecting cabinet which are far away from a starting point or a destination point of an optical cable in real time. If the optical cable comprises fiber cores in different directions, link details of the optical cable can be displayed in the GIS, and daily management work is greatly simplified and facilitated.
(2) In a scene that the OTDR monitors that a fault point is maintained on site, the system can accurately display the position of the fault point on an optical cable line segment in the GIS. On-site maintenance personnel can find the fault point faster according to the GIS positioning information of the map, and do not need to blindly search the fault optical cable breakpoint along the line between the two fault positioners. From these 2 use scenes, this system can greatly optimize management and maintenance work, has solved the optical cable management difficulty of managers and maintainer, and the slow problem of on-the-spot maintenance salvagees.
(3) The system can help the administrator to quickly master the number of optical cables on the route, the detailed information of each optical cable, the number of all links using the route and the detailed information of each link.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a display of the present invention when the anchor point is a bearer facility;
FIG. 3 is a schematic view of the display of the present invention when the anchor point is a fiber optic cable;
fig. 4 is a schematic diagram of the locating point of the present invention being a fault point.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
The invention relates to an optical cable monitoring system based on a GIS map, which comprises a line resource management module, an equipment management module, an OTDR test module and an optical cable map module.
The line resource module manages bearing facilities such as towers, pipe wells, lead-up, lead-down, marks, positioning points, machine rooms, cross connecting boxes, fiber distribution boxes and the like which need to be used in the actual construction process of the optical cable. The machine room, the cross connecting box and the fiber distribution box in the line resource module are the starting point and the end point of one optical cable section. The tower, the pipe well, the up-lead, the down-lead, the mark, the positioning point and other pipeline facilities are essential infrastructure for the optical cable route deployment. In the laying engineering of optical cables, optical cable segments of the same route are ubiquitous.
The equipment management module manages optical cable monitoring equipment, transmitting and receiving optical equipment, optical splitting equipment and the like.
The OTDR test module issues a test command to the device through a specified communication protocol to obtain a link measurement result, optical power loss, and the like, so as to monitor the health condition of the optical cable. The OTDR test module can obtain the measurement result of the optical cable link, and the optical cable monitoring system compares the measurement result with the actual optical cable link length to calculate whether a fault point exists and the position information of the fault point.
The optical cable map module displays the actual optical cable route and the route bearing facilities on a GIS map according to the information such as longitude and latitude coordinates recorded in the optical cable construction data based on a GIS geographic information system. And the optical cable map module is used for providing addition and deletion management for the optical cable route and the optical cable bearing facilities displayed on the map. In order to ensure the display and operation of the bearing facilities, the bearing facilities are displayed on the upper layer of the optical cable route when the optical cable route is drawn. The optical cable map provides an interactive function, and system operators operate and control the display of the basic information of the optical cable, the basic information of the optical cable bearing facility and the distance information from the selected positioning point to the starting and ending points of the optical cable link through peripheral equipment.
The invention discloses a display method of an optical cable positioning point based on a GIS map, which comprises the following steps:
(1) acquiring locating point information; and using the fault point monitored by the OTDR as a positioning point, or obtaining the positioning point by clicking the peripheral equipment. The positioning point comprises a route bearing facility and an optical cable section, wherein the route bearing facility comprises a machine room, a cross connecting box, a fiber distribution box and a tower tube well.
(2) Obtaining the distance from a positioning point to the starting point of each link;
if the positioning point is a route bearing facility, the distance from the positioning point to the starting point of the link is calculated as follows:
(21a) reading positioning points and acquiring positioning point information;
(22a) acquiring an optical cable section of a route containing a positioning point on a GIS map;
(23a) traversing the obtained optical cable sections, reading the link table and sequencing the links to obtain complete links where the optical cable sections are located;
(24a) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of a complete link (the sum of lengths of all optical cable sections in the link) and the length of an optical cable section before the sequence of the current optical cable section in the complete link (preLinkLength);
(25a) traversing each resource point on the current optical cable segment route; calculating the distance preCsLength of the optical cable segment from a starting machine room to an anchor point;
(26a) adding the total length of the optical cable segments before the current optical cable segment sequence in the complete link to the distance from the starting point machine room to the positioning point of the optical cable segment to obtain the distance from the positioning point to the starting point of the link:
toStartLength＝preLinkLength+preCsLength。
if the positioning point is the optical cable segment, the distance between the positioning point and the starting point of the link is calculated as follows:
(21b) obtaining the coordinate nearest to the point on the optical cable route according to the coordinates of the positioning point(lat1，lng1) And assigning a given locus;
(22b) according to the routing sequence of the optical cable, coordinates of two adjacent resource points are taken out every time, the coordinates are converted into plane coordinates such as mercator coordinates or pixel coordinates, whether the locating point is located on a line segment formed by the two adjacent points is judged, and front and rear resource points P1 and P2 of the locating point are obtained; in step (22b), the vector operation principle is applied to determine whether the anchor point is located on a line segment formed by two adjacent resource points, the set anchor point is P (x, y), and the two adjacent resource points are P1(x, y) respectively1，y1)、P2(x2，y2) The basis of the point P on the straight line consisting of P1 and P2 is: (P-P1) × (P2-P1) ═ 0, note xmin＝min{x1，x2}，xmax＝max{x1，x2}，ymin＝min{y1，y2}，ymax＝max{y1，y2}; judgment of xmin≤x≤xmax&&ymin≤y≤ymaxIf true, point P is on the segment consisting of P1 and P2.
(23b) And acquiring P1 and P2 optical cable segments contained in all routes on the GIS map.
(24b) Traversing the obtained optical cable sections, reading a link table, sequencing links and the like, and obtaining complete links where the optical cable sections are located;
(25b) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of the complete link and the length sum of the optical cable sections before the current optical cable section sequence in the complete link;
(26b) traversing each resource point on the current optical cable segment route, and calculating the distance from the starting machine room to the previous resource point P1 of the optical cable segment; calculating the distance between the selected positioning point on the optical cable and the front resource point P1 through latitude and longitude; adding the two distances into the distance from the starting point to the selected positioning point of the current optical cable segment;
calculating the distance between the positioning point on the optical cable and the front resource point in the step (26b), and setting a position point coordinate (lat)1，lng1) Coordinates of previous resource points (lat)2，lng2) R is 6378.137Km, the radius of the earth is longDegree; the applied geographic coordinate calculation formula is as follows:
(27b) and adding the total length of the optical cable sections before the current optical cable section sequence and the distance from the starting point of the current optical cable section to the selected positioning point, namely the distance from the positioning point to the starting point of the optical cable link.
When the fault point monitored by the OTDR is used as a positioning point, the method comprises the following steps:
comparing the OTDR detection result with the complete length of the test link, and if the length is smaller than the complete length, determining that the link fails;
after receiving the OTDR fault point report, the system compares the distances from each bearing facility to the starting point of the test link to obtain the position of the fault point;
if the fault point is on the bearing facility, marking the fault point on the bearing facility on the map, and reporting the distance L from the fault point to the starting point and the ending point of the link;
if the fault point is located between two bearing facilities, obtaining two bearing facilities and the distance L from each bearing facility to the starting point of the link1、L2Rear (L)1＜L2) Using the formula
And obtaining the proportion of the distance between the fault point and the two bearing facilities, and marking the accurate position of the fault point on a map.
(3) Obtaining the distance from a positioning point to the end point of each link; and subtracting the distance from the positioning point to the starting point of the link from the total length of the link to obtain the distance from the positioning point to the end point of the link.
(4) And displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on a GIS map.
Example 1:
as shown in fig. 1, a plurality of optical cable routes and their carrying facilities are drawn on the GIS map. When a user selects the position of the positioning point (r), the following steps are executed:
step 1): judging the type of the selected positioning point as a machine room;
step 2): obtaining information such as the name, the number, the longitude and latitude and the like of the selected resource;
step 3): acquiring optical cable sections containing positioning points in all routes on a GIS map;
step 4): traversing the optical cable sections acquired in the step 3), reading a link table, sequencing links and the like, and acquiring complete links of the optical cable sections;
step 5): traversing each complete link, and judging the sequence of the current optical cable segment in the complete link;
step 6): calculating the length of a complete link (the sum of lengths of all optical cable sections in the link) allLinkLength and the length of an optical cable section before the sequence of the current optical cable section in the complete link, namely preLinkLength;
step 7): traversing each resource point on the current optical cable segment route;
step 8): calculating the distance preCsLength of the optical cable segment from a starting machine room to a positioning point (i);
step 9): adding the total length of the optical cable segments before the current optical cable segment sequence in the complete link to the distance from the starting point machine room to the positioning point I of the optical cable segment to obtain the distance from the positioning point I to the starting point of the link: preLinkLength + preCsLength ToStartLength;
step 10): and subtracting the distance from the starting point of the link from the total length of the link to obtain the distance from the end point of the link: allLinkLength-toStartLength ═ toEndLength;
step 11): and displaying the information of the positioning points (the machine room, the cross connecting box, the fiber distribution box and the tower tube well), the information of the optical cable at the positioning points and the distances from the positioning points to the starting and ending points of each link on a GIS map through a suspension window, as shown in figure 2.
Example 2:
when the user selects the positioning point, the following steps are executed:
step 1): the system judges the type of the selected resource point, and the judgment result is an optical cable segment;
step 2): acquiring information such as the name, the number, the core number and the like of the optical cable section and coordinates (lat, lng) of a currently selected point;
step 3): taking the coordinate of the currently selected point as a positioning point, and acquiring the coordinate (lat) closest to the point on the optical cable route1，lng1) And assigning a given locus;
step 4): according to the routing sequence of the optical cable, coordinates of two adjacent resource points are taken out every time, the coordinates are converted into plane coordinates such as mercator coordinates or pixel coordinates, whether the locating point is located on a line segment formed by the two adjacent points is judged, and front and rear resource points P1 and P2 of the locating point are obtained;
step 5): acquiring all routes on a GIS map, wherein the routes comprise P1 and P2 optical cable segments;
step 6): traversing the optical cable sections acquired in the step 5), reading a link table, sequencing links and the like, and acquiring complete links of the optical cable sections;
step 7): traversing each complete link, and judging the sequence of the current optical cable segment in the complete link;
step 8): calculating the length of the complete link (the sum of the lengths of all optical cable sections in the link) and the length sum of the optical cable sections before the current optical cable section sequence in the complete link;
step 9): traversing each resource point on the current optical cable segment route, and calculating the distance from the starting machine room (machine room 2) to the front resource point P1 in the front and rear resource points of the optical cable segment;
step 10): calculating the distance between a selected positioning point on the optical cable and a front resource point P1 through longitude and latitude;
step 11): adding the distances in the step 9) and the step 10) to obtain the distance from the starting point to the selected positioning point II of the current optical cable segment;
step 12): adding the total length of the optical cable sections before the current optical cable section sequence in the step 8) and the distance from the starting point of the current optical cable section to the selected positioning point II in the step 11), namely the distance from the positioning point II to the starting point of the optical cable link;
step 13): subtracting the distance from the starting point of the link from the total length of the link to obtain the distance from the end point of the link;
step 14): and displaying the information of the optical cable and the starting and ending point distances of each link on a GIS map through a floating window, as shown in figure 3.
Example 3:
and obtaining a measurement result after the OTDR module is used for testing, comparing the measurement result with the complete length of the test link, and if the measurement result is smaller than the complete length, determining that the link fails. After receiving the OTDR fault point report, the system obtains the position of the fault point by comparing the distance between each bearing facility and the starting point of the test link: may be located just above a certain bearer or may be located between two bearers. If the distance is the former distance, a fault point can be marked on the bearing facility on the map, and the distance L from the bearing facility to the starting point and the ending point of the link is reported; if the latter is the case, two bearers and their respective distances L to the start of the link are obtained1、L2Rear (L)1＜L2) Using the formula
And obtaining the proportion of the distance between the fault point and the two bearing facilities, thereby marking the accurate position of the fault point on a map. As shown in fig. 4.
Claims (10)
1. A display method based on GIS map optical cable positioning points is characterized in that: the method comprises the following steps:
(1) acquiring locating point information;
(2) obtaining the distance from a positioning point to the starting point of each link;
(3) obtaining the distance from a positioning point to the end point of each link;
(4) and displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on a GIS map.
2. The display method of GIS-based map optical cable positioning point according to claim 1, characterized in that: and (2) taking the fault point monitored by the OTDR as a positioning point in the step (1), or obtaining the positioning point by clicking peripheral equipment.
3. The display method of GIS-map-based optical cable positioning points according to claim 2, characterized in that: the positioning points obtained through clicking of the peripheral equipment comprise a route bearing facility and an optical cable section, wherein the route bearing facility comprises a machine room, a cross connecting box, a fiber distribution box and a tower tube well.
4. The display method of GIS-map-based optical cable positioning points according to claim 3, characterized in that: if the positioning point is a route bearing facility, the distance from the positioning point to the starting point of the link is calculated as follows:
(21a) reading positioning points and acquiring positioning point information;
(22a) acquiring an optical cable section of a route containing a positioning point on a GIS map;
(23a) traversing the obtained optical cable sections, reading the link table and sequencing the links to obtain complete links where the optical cable sections are located;
(24a) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of the complete link, namely allLinkLength, and the length sum of the optical cable sections before the sequence of the current optical cable section in the complete link, namely preLinkLength;
(25a) traversing each resource point on the current optical cable segment route; calculating the distance preCsLength of the optical cable segment from a starting machine room to an anchor point;
(26a) adding the total length of the optical cable segments before the current optical cable segment sequence in the complete link to the distance from the starting point machine room to the positioning point of the optical cable segment to obtain the distance from the positioning point to the starting point of the link:
toStartLength＝preLinkLength+preCsLength。
5. the display method of GIS-map-based optical cable positioning points according to claim 3, characterized in that: if the positioning point is the optical cable segment, the distance between the positioning point and the starting point of the link is calculated as follows:
(21b) obtaining the coordinate (lat) nearest to the point on the optical cable route according to the coordinates of the positioning point1，lng1) And assigning a given locus;
(22b) according to the routing sequence of the optical cable, coordinates of two adjacent resource points are taken out every time, the coordinates are converted into plane coordinates such as mercator coordinates or pixel coordinates, whether the locating point is located on a line segment formed by the two adjacent points is judged, and front and rear resource points P1 and P2 of the locating point are obtained;
(23b) and acquiring P1 and P2 optical cable segments contained in all routes on the GIS map.
(24b) Traversing the obtained optical cable sections, reading a link table, sequencing links and the like, and obtaining complete links where the optical cable sections are located;
(25b) traversing each complete link, and judging the sequence of the current optical cable segment in the complete link; calculating the length of the complete link and the length sum of the optical cable sections before the current optical cable section sequence in the complete link;
(26b) traversing each resource point on the current optical cable segment route, and calculating the distance from the starting machine room to the previous resource point P1 of the optical cable segment; calculating the distance between the selected positioning point on the optical cable and the front resource point P1 through latitude and longitude; adding the two distances into the distance from the starting point to the selected positioning point of the current optical cable segment;
(27b) and adding the total length of the optical cable sections before the current optical cable section sequence and the distance from the starting point of the current optical cable section to the selected positioning point, namely the distance from the positioning point to the starting point of the optical cable link.
6. The display method of GIS-based map optical cable positioning point according to claim 5, characterized in that: in step (22b), the vector operation principle is applied to determine whether the anchor point is located on a line segment formed by two adjacent resource points, the set anchor point is P (x, y), and the two adjacent resource points are P1(x, y) respectively1，y1)、P2(x2，y2) The basis of the point P on the straight line consisting of P1 and P2 is: (P-P1) × (P2-P1) ═ 0, note xmin＝min{x1，x2}，xmax＝max{x1，x2}，ymin＝min{y1，y2}，ymax＝max{y1，y2}; judgment of xmin≤x≤xmax&&ymin≤y≤ymaxIf true, point P is on the segment consisting of P1 and P2.
7. The method of claim 5 based onThe display method of GIS map optical cable positioning point is characterized by that in step (26b) the distance between positioning point on the optical cable and front resource point is calculated, and the position point coordinate (lat) is set1，lng1) Coordinates of previous resource points (lat)2，lng2) R is 6378.137Km, the radius length of the earth; the applied geographic coordinate calculation formula is as follows:
8. the method for displaying the GIS map optical cable positioning point according to claim 1, characterized in that: and (3) subtracting the distance from the positioning point to the starting point of the link from the total length of the link to obtain the distance from the positioning point to the end point of the link.
9. The display method of GIS-map-based optical cable positioning points according to claim 2, characterized in that: when the fault point monitored by the OTDR is used as a positioning point, the method comprises the following steps:
comparing the OTDR detection result with the complete length of the test link, and if the length is smaller than the complete length, determining that the link fails;
after receiving the OTDR fault point report, the system compares the distances from each bearing facility to the starting point of the test link to obtain the position of the fault point;
if the fault point is on the bearing facility, marking the fault point on the bearing facility on the map, and reporting the distance L from the fault point to the starting point and the ending point of the link;
if the fault point is located between two bearing facilities, obtaining two bearing facilities and the distance L from each bearing facility to the starting point of the link1、L2Rear (L)1＜L2) Using the formula
And obtaining the proportion of the distance between the fault point and the two bearing facilities, and marking the accurate position of the fault point on a map.
10. An optical cable monitoring system based on a GIS map comprises a line resource management module, an equipment management module, an OTDR test module and an optical cable map module;
the line resource module manages the bearing facilities;
the equipment management module manages the cable monitoring equipment;
the OTDR test module judges whether a fault point exists and acquires fault point position information;
the optical cable map module displays the optical cable route and the route bearing facility on a GIS map according to longitude and latitude coordinate information recorded in optical cable construction data; and displaying the positioning point information, the optical cable information of the positioning point and the distance from the positioning point to the starting point and the end point of each link on the GIS map.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900232A (en) * | 2022-04-26 | 2022-08-12 | 杭州东方通信软件技术有限公司 | Method and system for positioning fault point of transmission optical cable based on GIS engine |
| CN116502783A (en) * | 2023-06-27 | 2023-07-28 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114900232A (en) * | 2022-04-26 | 2022-08-12 | 杭州东方通信软件技术有限公司 | Method and system for positioning fault point of transmission optical cable based on GIS engine |
| CN116502783A (en) * | 2023-06-27 | 2023-07-28 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
| CN116502783B (en) * | 2023-06-27 | 2023-09-08 | 国网浙江省电力有限公司湖州供电公司 | GIS-based ADSS optical cable operation and maintenance line planning method and device |
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