Detecting the possibility of train derailment based on FBG sensor system

Abstract

Detecting the possibility of train derailment and preventing the happening of derailment are very important to railway safety affairs. The FBG has the anti-electromagnetic interference, anti-corrosion and strong stability characteristics which make it very practical for high-speed train's safety detection. A quasi-distributed Fiber Bragg Grating (FBG) based strain sensing system for railway derailment detecting is presented in this paper. The FBG sensor system is designed to detect possible factors which may lead to train derailment, such as the speed of train, the max value of coefficient of derailment and off load ratio R. Then there is algorithm to analysis the possibility of train derailment with detected data. The FBG's characteristic of multiplexing make the railway safety networks service becomes possible.