Field test for real-time position and speed monitoring of trains using phase-sensitive optical time domain reflectometry (Φ-OTDR)

Ning Duan; Fei Peng; Yun-Jiang Rao; Jiang Du; Yao Lin

doi:10.1117/12.2059188

2 June 2014 Field test for real-time position and speed monitoring of trains using phase-sensitive optical time domain reflectometry (Φ-OTDR)

Ning Duan, Fei Peng, Yun-Jiang Rao, Jiang Du, Yao Lin

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91577A (2014) https://doi.org/10.1117/12.2059188
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

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.

Citation Download Citation

Ning Duan, Fei Peng, Yun-Jiang Rao, Jiang Du, and Yao Lin "Field test for real-time position and speed monitoring of trains using phase-sensitive optical time domain reflectometry (Φ-OTDR)", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91577A (2 June 2014); https://doi.org/10.1117/12.2059188

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available