Fiber Optic Displacement Sensor Used in Railway Turnout Contact Monitoring System

摘要：

　　In order to measure the distance between switch point and stock rail in railway system high precision, a wide range and high precision fiber Bragg grating (FBG) displacement sensor is designed.The sensitivity as well as the measurement range of the senor is increased through the effective cooperation of the spring and equal strength beam.At the same time, differential compensation method is exploited for eliminating temperature effects, which brings further improvement of the sensitivity as well.Test results show that, in the range of 160 mm, the precision of the sensor is 0.017 mm.

关键词： fiber Bragg grating switch point displacement sensor

作者: H.B.Xu W.T.Zhang Y.L.Du F.Li C.Bian H.Jing F.Li

作者单位: Optoelectronic System Laboratory,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100 Optoelectronic System Laboratory,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100 Key Laboratory of Structure Health Monitoring and Control of Hebei Province,Shijiazhuang Tiedao Univ

会议类型: 国际会议

会议名称: The 5th International Forum on Opto-electronic Sensor-based Monitoring in Geo-engineering (5th OSMG-2014)(第五届地质(岩土)工程光电传感监测国际论坛

会议地点: 南京

会议语种:英文

页码: 374-376

在线出版日期: 2014-10-12（万方平台首次上网日期，不代表论文的发表时间）