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학술지 Synergetic Resonance Matching of a Microphone and a Photoacoustic Cell
Cited 14 time in scopus Download 85 time Share share facebook twitter linkedin kakaostory
저자
심주용, 안창근, 허철, 정광효, 정은주, 김봉규
발행일
201704
출처
Sensors, v.17 no.4, pp.1-10
ISSN
1424-8220
출판사
MDPI AG
DOI
https://dx.doi.org/10.3390/s17040804
협약과제
17ZS1300, 광간섭계 기반의 광음향 기술을 이용한 무채혈 혈당분석 원천기술 , 김봉규
초록
We propose an approach to match the resonant characteristics of a photoacoustic cell with that of a microphone in order to enhance the signal-to-noise ratio in the photoacoustic sensor system. The synergetic resonance matching of a photoacoustic cell and a microphone was achieved by observing that photoacoustic cell resonance is merged with microphone resonance, in addition to conducting numerical and analytical simulations. Using this approach, we show that the signal-to-noise ratio was increased 3.5-fold from the optimized to non-optimized cell in the photoacoustic spectroscopy system. The present work is expected to have a broad impact on a number of applications, from improving weak photoacoustic signals in photoacoustic spectroscopy to ameliorating various sensors that use acoustic resonant filters.
KSP 제안 키워드
Photoacoustic cell, Photoacoustic spectroscopy, Sensor system, Signal noise ratio(SNR), Signal-to-Noise, resonant characteristics
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