Fiber grating sensors system for civil structural stain monitoring

Haiwen Cai; Zhiping Xia; Jianxin Geng; Yan Zhang; Hongliang Cui

doi:10.1117/12.521668

30 April 2004 Fiber grating sensors system for civil structural stain monitoring

Haiwen Cai, Zhiping Xia, Jianxin Geng, Yan Zhang, Hongliang Cui

Proceedings Volume 5279, Optical Fibers and Passive Components; (2004) https://doi.org/10.1117/12.521668
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

Based on matched fiber grating interrogation scheme, a fiber grating strain sensors system has been proposed and experimentally demonstrated on an equivalent-strength cantilever beam model, which can be deployed for civil structural strain and mechanical vibration simultaneous detection. Through special designing of sensor head, the temperature cross-sensitivity in strain sensing has been automatically removed. A common-path reference measurement structure has been used, so measurement errors caused by fluctuation of losses in the system or the light source power has been effectively eliminated, and the long-term stability of sensor system has been improved.

Citation Download Citation

Haiwen Cai, Zhiping Xia, Jianxin Geng, Yan Zhang, and Hongliang Cui "Fiber grating sensors system for civil structural stain monitoring", Proc. SPIE 5279, Optical Fibers and Passive Components, (30 April 2004); https://doi.org/10.1117/12.521668

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