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Proceedings Paper

A new fiber Bragg grating based accelerometer
Author(s): Yongjie Wang; Rui Wang; Fang Li; Yuliang Liu
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Paper 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.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71334K (12 January 2009); doi: 10.1117/12.810570
Show Author Affiliations
Yongjie Wang, Institute of Semiconductors (China)
Rui Wang, Institute of Semiconductors (China)
Fang Li, Institute of Semiconductors (China)
Yuliang Liu, Institute of Semiconductors (China)


Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology
Jiubin Tan; Xianfang Wen, Editor(s)

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