Tangshan Mobile's innovative technology monitoring means protect the safety of trunk optical cables

With the acceleration of urbanization construction, infrastructure construction has been fully rolled out, which has increased the difficulty of optical cable maintenance, especially in urban areas, suburbs and highway pipelines and optical cables due to some disorderly construction is easy to cause line damage, once the line is blocked, it will cause great damage
to the communication network.

In order to ensure the safe and smooth transmission of national communication optical cables, Tangshan Mobile innovated technical monitoring methods, developed an optical fiber vibration monitoring system, and strengthened the safety protection
of transmission lines through early warning.
The system mainly uses the interference phenomenon of light, when a certain optical fiber is disturbed by the outside world, the parameters in the optical interference phenomenon will change, through high-speed signal acquisition and data processing technology, according to the vibration duration, vibration intensity and vibration frequency, etc.
, accurately locate the location of the disturbance and give real-time alarm information
.

Since December 2015, Tangshan Mobile staff began to test the application of optical fiber sensing technology, installed micro-sensing equipment on the idle fiber core of trunk optical cables, monitored the external disturbance information around the directly buried optical cable within 40 kilometers in real time, automatically collected the vibration intensity, frequency and duration, determined the risk level coefficient through the detection and analysis platform, automatically identified the location calibration and issued alarms, and warned the risk of
man-made damage in advance.
At the same time, a vibration source database is established, focusing on the vibration spectrum of construction machinery such as excavators and pipe jacking machines into the priority alarm level, and changing passive fault handling to active hidden danger elimination
.

Up to now, Tangshan Mobile has invested more than 40 people to carry out 10 actual combat tests, and has completed the platform construction of the main optical cable of the Tangshan Tianyuan to Yutian trunk line, realizing the early warning of the construction around the trunk optical cable half an hour in advance, the alarm accuracy rate is about 37%, and the maintenance cost of the trunk line is reduced by 35%.

。 It is expected that in June 2016, the optical fiber vibration monitoring system will be officially put into use, which will make up for the time hole of the weekly line patrol of maintenance personnel, and can achieve 24-hour real-time monitoring, once sudden external construction is found, the system will automatically alarm and SMS notify maintenance personnel to come to the site to inspect and care, improve the accuracy and effectiveness of early warning maintenance, effectively prevent the influence of external forces, and ensure the safety of
trunk optical cables.