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http://dx.doi.org/10.5139/JKSAS.2004.32.5.050

Stabilized Bragg grating sensor system for multiplexing vibration sensors of smart structures  

Bang, Hyung-Joon (한국과학기술원 항공우주공학 대학원)
Kim, Dae-Hyun (한국과학기술원 항공우주공학 대학원)
Hong, Chang-Sun (한국과학기술원 항공우주공학전공)
Kim, Chun-Gon (한국과학기술원 항공우주공학전공)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.5, 2004 , pp. 50-57 More about this Journal
Abstract
For the application of structural health monitoring such as AE detection, a stabilized FBG sensor system with wide dynamic range was proposed. A tunable Fabry-Perot filter with narrow free spectral range(FSR) was used to simplify the multiplexing demodulator for FBG vibration sensors. Stabilization controlling system was also developed for the maintenance of maximum sensitivity of the sensors. In order to verify the performance of the proposed FBG vibration sensor system, we measured sensitivity, and the system showed the average sensitivity of 256 $n{\in}_{mas}/{\sqrt{Hz}}$. Finally, multi-points vibration tests using in-line FBG sensors were conducted to validate the multiplexing performance of the FBG system.
Keywords
Smart Structures; Bragg Grating Sensors; Stabilization Control;
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Times Cited By KSCI : 1  (Citation Analysis)
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