Underground Pipe Gallery Gas Monitoring System Based on Fiber Optic Energy Supply

A gas monitoring system for underground utility tunnels based on fiber optic power supply has been proposed. This system has the characteristics of long transmission distance, low cost, strong resistance to electromagnetic interference, and low power consumption. It uses optical fibers for power supply, solving the problem of difficult power supply for underground pipe galleries. The system was used for testing in a certain underground pipe gallery tunnel, and the verification results met the expected requirements. The device can be effectively used for on-site monitoring of underground pipe galleries.