4 May 2012 Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications
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Abstract
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.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yeongwan Lee, Yeongwan Lee, Chun-Gon Kim, Chun-Gon Kim, Dae-Hyun Kim, Dae-Hyun Kim, } "Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications," Optical Engineering 51(5), 054402 (4 May 2012). https://doi.org/10.1117/1.OE.51.5.054402 . Submission:
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