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Proceedings Paper

Design and study of a vibrating string accelerometer based on fiber Bragg grating
Author(s): Qi Jiang; Minghao Yu; Lingling Sun
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Paper Abstract

In this paper, a novel one-degree-of-freedom micro-seismic sensor based on Fiber vibrating wire is put forward. The oscillator is penetrated by the optical fiber and mounted near the grating to make a micro-seismic detecting structure. This design contributes to fiber Bragg grating’s response to tiny vibration directly. Some advantages such as small volume, high sensitive, easy for multiplexing, immunity of electromagnetic interference, low cost will be obtained. The new sensor with convenient zero adjust structure is fabricated as well. An experimental system based on high speed FBG interrogation analyzer is set up to demodulate vibration signal and analyze testing data. The micro-seismic simulation experimental results indicate that the sensor owns good performance with low frequency and high sensitivity. This study will be meaningful and helpful in Engineering seismic detection and Earthquake prediction application.

Paper Details

Date Published: 10 October 2013
PDF: 6 pages
Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89162N (10 October 2013); doi: 10.1117/12.2035960
Show Author Affiliations
Qi Jiang, Shandong Univ. (China)
Minghao Yu, Shandong Univ. (China)
Lingling Sun, Shandong Univ. (China)

Published in SPIE Proceedings Vol. 8916:
Sixth International Symposium on Precision Mechanical Measurements
Shenghua Ye; Yetai Fei, Editor(s)

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