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Proceedings Paper

Fiber optic displacement sensor used in railway turnout contact monitoring system
Author(s): Hongbin Xu; Wentao Zhang; Yanliang Du; Feng Li; Fang Li
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Paper Abstract

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.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89242A (15 October 2013); doi: 10.1117/12.2031258
Show Author Affiliations
Hongbin Xu, Institute of Semiconductors (China)
Shijiazhuang Tiedao Univ. (China)
Wentao Zhang, Institute of Semiconductors (China)
Yanliang Du, Shijiazhuang Tiedao Univ. (China)
Feng Li, Institute of Semiconductors (China)
Shijiazhuang Tiedao Univ. (China)
Fang Li, Institute of Semiconductors (China)


Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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