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Journal of Sensors
Volume 2012, Article ID 365165, 7 pages
Research Article

Development of a Fiber-Optic Sensing System for Train Vibration and Train Weight Measurements in Hong Kong

1Department of Electrical Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong
2Mass Transit Railway, Fo Tan Railway House, Fo Tan, Shatin, NT, Hong Kong

Received 3 April 2012; Accepted 29 May 2012

Academic Editor: Yu-Lung Lo

Copyright © 2012 C. C. Lai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel operation system to detect train vibration and train weight using FBG sensing network has been designed and tested in Hong Kong. The purpose of the system is for real time condition monitoring of trains. Because of the fast response of optical systems, the trains can be monitored in real-time during its normal service without any special arrangement. Hence, the condition checking can be realized without any disruption on the operating condition of the railway system.