Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications

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This paper discusses an applicable fiber-optic accelerometer composed of a transmissive grating panel, a reflection mirror, and two optical fibers with a separation of quarter grating pitch as transceivers that monitor the low-frequency accelerations of civil engineering structures. This sensor structure brings together the advantages of both a simple sensor structure, which leads to simplified cable design by 50% in comparison with the conventional transmission-type fiber optic accelerometer, and a stable reflected signals acquisition with repeatability in comparison to the researched grating-reflection type fiber optic accelerometer. The vibrating displacement and sinusoidal acceleration measured from the proposed fiber optic sensor demonstrated good agreement with those of a commercial laser displacement sensor and a MEMS accelerometer without electromagnetic interference. The developed fiber optic accelerometer can be used in frequency ranges below 4.0 Hz with a margin of error that is less than 5% and a high sensitivity of 5.06 rad/(m/s)(2).
Publisher
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
Issue Date
2012-05
Language
English
Article Type
Article
Keywords

SENSORS

Citation

OPTICAL ENGINEERING, v.51, no.5

ISSN
0091-3286
DOI
10.1117/1.OE.51.5.054402
URI
http://hdl.handle.net/10203/102043
Appears in Collection
AE-Journal Papers(저널논문)
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