Research on Reliable High-speed Train Axle Temperature Monitoring System based on Fluorescence Optical Fiber Sensor

摘要

The platinum resistance temperature sensors, which are widely applied in high speed trains, have the disadvantage of unreliable performance which usually causes train delay. This paper presents a reliable high-speed train axle temperature monitoring system based on fluorescent optical fiber temperature sensor, which has the advantages of accurate temperature measurement, good versatility, simple principle, and low cost. The fluorescent decay effect is used to measure the temperature, and the optical fiber is used to transfer the fluorescent signal in order to overcome the failure of insulation, water, and electromagnetic interference (EMI). The system shows high accuracy and reliability in the type test, and will be used on the track engineering vehicle to get a real test.