Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications
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.
History
Received Dec 20, 2011
Accepted Mar 26, 2012
Revised Mar 04, 2012
Published online May 04, 2012
Accepted Mar 26, 2012
Revised Mar 04, 2012
Published online May 04, 2012
Digital Object Identifier
Citation
Yeon-Gwan Lee, Dae-Hyun Kim and Chun-Gon Kim, "Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications", Opt. Eng. 51, 054402 (May 04, 2012); http://dx.doi.org/10.1117/1.OE.51.5.054402
Source: SPIE
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