상세정보
학술지
Synergetic Resonance Matching of a Microphone and a Photoacoustic Cell
- 발행일
- 201704
- 출처
- Sensors, v.17 no.4, pp.1-10
- ISSN
- 1424-8220
- 출판사
- MDPI AG
- 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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