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Proceedings Paper

Field test for real-time position and speed monitoring of trains using phase-sensitive optical time domain reflectometry (Φ-OTDR)
Author(s): Ning Duan; Fei Peng; Yun-Jiang Rao; Jiang Du; Yao Lin
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Paper Abstract

It is essential to carry out real-time position and speed of trains to ensure the safety of railway operation. In this paper, the phase-sensitive optical-time-domain reflectometry (Φ-OTDR) is proposed and demonstrated to overcome the disadvantage of the track circuit that is currently used and has the risk to be damaged by lightening, for the first time, to the best of our knowledge. A long sensing cable, buried nearby two parallel railways, is used to detect the vibration signals generated by trains with Φ-OTDR and the real vibration signals of the trains are extracted/quantified utilizing wavelet denoising. With the wavelet edge detection, the operation status of two nearby trains, including their relative position and speed, are obtained over a 10.2 km measurement length in real-time. This work offers a new passive way for safety monitoring of railway operation.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577A (2 June 2014); doi: 10.1117/12.2059188
Show Author Affiliations
Ning Duan, Univ. of Electronic Science and Technology of China (China)
Fei Peng, Univ. of Electronic Science and Technology of China (China)
Yun-Jiang Rao, Univ. of Electronic Science and Technology of China (China)
Jiang Du, Univ. of Electronic Science and Technology of China (China)
Yao Lin, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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