A new fiber Bragg grating based accelerometer

Yongjie Wang; Rui Wang; Fang Li; Yuliang Liu

doi:10.1117/12.810570

12 January 2009 A new fiber Bragg grating based accelerometer

Yongjie Wang, Rui Wang, Fang Li, Yuliang Liu

Proceedings Volume 7133, Fifth International Symposium on Instrumentation Science and Technology; 71334K (2009) https://doi.org/10.1117/12.810570
Event: International Symposium on Instrumentation Science and Technology, 2008, Shenyang, China

Abstract

A new fiber Bragg grating (FBG) based accelerometer is developed for monitoring seismic activities induced by moving vehicles. A theoretical model of the sensor is established, and analytical formulas of describing the sensitivity and resonant frequency are provided. Sensors of this type are fabricated and tested. The experimental results show that they have a sensitivity of 162.8 pm/G and a resonant frequency of 242.9Hz. The minimum detectable signal of the whole sensing system is about 12.1 &mgr;g. A field test is carried out to find out that for tracked vehicles' monitoring, a single sensor has a detection range of about 300 meters, indicating a promising future in practical use.

Citation Download Citation

Yongjie Wang, Rui Wang, Fang Li, and Yuliang Liu "A new fiber Bragg grating based accelerometer", Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71334K (12 January 2009); https://doi.org/10.1117/12.810570

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