GIS-based positioning method for optical cable fault points

Abstract

The invention belongs to the field of cable fault online monitoring and particularly relates to a GIS-based positioning method for optical cable fault points. The method includes: fault positioners are mounted on an optical cable line at intervals, and marking the optical path geographic positions of the fault positioners; visually displaying the route of the optical cable line and the actual geographic positions of the fault positioners, tower connector boxes and towers on a GIS map; using the attenuation of an OTDR photometry signal to accurately obtain the light path distance between an optical cable disconnection point and a machine room; positioning the optical cable disconnection point between two adjacent fault positioners marked by optical path geographic positions; positioning the fault positioners positioning the optical cable disconnection point to actual geographical positions on the GIS map. By the GIS-based positioning method, the optical cable disconnection point can be positioned between the adjacent fault positioners marked by the actual geographic positions, and maintenance staff can maintain the optical cable disconnection point according to the positioned actual geographic positions.

Description

technical field [0001] The invention belongs to the field of on-line monitoring of optical cable faults, and in particular relates to the research on precise positioning and display analysis of the actual position of optical cable fault points, in particular a GIS-based optical cable fault point positioning method. Background technique [0002] At present, the following problems exist in the fault location of optical cables: (1) OTDR is widely used to test optical cables and obtain the optical power attenuation curves of multiple optical fibers, and then use a computer to perform signal processing and analysis on a large amount of test data. There are such problems in this way: OTDR The obtained test data is mixed with a lot of noise, which increases the difficulty of processing the test data, which directly leads to inaccurate calculation of the fault location in the optical cable. (2) The data obtained from optical cable monitoring of the test data are all in text format. ...

AI Technical Summary

Problems solved by technology

[0002] At present, the following problems exist in the fault location of optical cables: (1) OTDR is widely used to test optical cables and obtain the optical power attenuation curves of multiple optical fibers, and then use a computer to perform signal processing and analysis on a large amount of test data. There are such problems in this way: OTDR The obtained test data is mixed with a lot of noise, which increases the difficulty of processing the test data, which directly leads to inaccurate calculation of the fault location in the optical cable

(2) The data obtained from optical cable monitoring of the test data are all in text format. The inspectors determine the actual location of the optical cable fault according to the paper network topology and routing diagram. This method is very inconvenient; and non-professional optical cable maintenance personnel Generally, the network topology and routing diagram cannot be understood, and the location of the fault cannot be completed, resulting in extremely low maintenance efficiency

(3) The combination of the existing GIS map and the optical cable network is unreasonable, making it more difficult to determine the actual location of the fault point, and the existing system is not perfect