Field trials of fiber Bragg grating settlement sensors in high-speed railways

Xianglin Lu; Yuan Gong; Xiangliang Zheng; Lei Du; Yu Wu; Dengyong Li; Li Liu; Yao Yao; Song Xiao; Zhong Deng; Yunjiang Rao

doi:10.1117/12.975243

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7 November 2012 Field trials of fiber Bragg grating settlement sensors in high-speed railways

Xianglin Lu, Yuan Gong, Xiangliang Zheng, Lei Du, Yu Wu, Dengyong Li, Li Liu, Yao Yao, Song Xiao, Zhong Deng, Yunjiang Rao

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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421BL (2012) https://doi.org/10.1117/12.975243
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Novel fiber Bragg gratings (FBG) based settlement sensors are developed and the sensing performance is evaluated in both the lab and field environments. The settlement is determined by precisely measuring the pressure of the water level difference. The experimental results indicated that the sensor has good linearity, good repeatability and high accuracy in the settlement measurements. The influence of temperature fluctuations on the sensor's performance is eliminated and long-term test results proved the good stability of better than ±0.1% of the sensor. Such a FBG sensing system has been applied to monitor the settlement of high-speed railways in practice.

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Xianglin Lu, Yuan Gong, Xiangliang Zheng, Lei Du, Yu Wu, Dengyong Li, Li Liu, Yao Yao, Song Xiao, Zhong Deng, and Yunjiang Rao "Field trials of fiber Bragg grating settlement sensors in high-speed railways", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421BL (7 November 2012); https://doi.org/10.1117/12.975243

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