Compared with traditional electrical sensors and mechanical sensors, optical fiber sensing technology has the advantages of anti-electromagnetic interference, corrosion resistance, light weight, small size, both sensing and transmission functions, long life, long-distance monitoring and transmission, and service life. The advantages of low maintenance costs within the period are very suitable for long-term real-time monitoring of rail transit infrastructure. Shanghai University of Applied Technology, in conjunction with Dalian University of Technology and Southwest Jiaotong University, and relying on the rail transit industry-university-research base, has developed optical fiber sensors suitable for temperature, pressure, strain and inclination monitoring of rail transit subgrades, bridges, tunnels and tracks. Research on key technologies such as sensing performance and monitoring layout optimization.

technology maturity:

This process technology is mature, has been industrially produced, and can provide technical services on a large scale.

Technological innovation points:

The products developed by our team are all independently developed. Through special tooling design, various parameter optical fiber sensors and related technical consultation required for infrastructure monitoring during rail transit construction and operation can be customized.

Application areas:

Health monitoring of civil infrastructure for high-speed railways, heavy-haul railways and urban rail transit

Patents:

1. A long-distance distributed optical fiber space attitude monitoring sensor

2. Real-time optical fiber vibration monitoring and alarm system for subgrade collapse