Optical fiber distributed pipeline monitoring system uses optical fiber as sensor to detect the leakage point of pipeline by monitoring the temperature change outside the pipeline. The principle of DTS optical fiber distributed pipeline monitoring system is Raman effect. Raman scattering light is caused by thermally affected molecular vibrations, and backscattered light carries information about the local temperature at which the scattering occurs.

The main advantages of distributed optical fiber pipeline leakage temperature detection system are as follows:

1. The temperature measurement medium is armored optical cable, without external power supply, convenient construction and no later maintenance;

2. It can monitor the pipe network in all directions without dead angle, and can locate multiple leakage points in real time within 24 hours, with high positioning accuracy within 5 meters;