Journal of Auto-vehicle Safety Association (자동차안전학회지)

Korean Auto-vehicle Safety Association (한국자동차안전학회)
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Characteristics of NDIR Alcohol Sensor with Elliptical Optical Structures

타원형 광구조물을 갖는 비분산 적외선 알코올 센서의 특성

  • 이승환 (한국교통대학교 기계공학과) ;
  • 김진호 (한국교통대학교 기계공학과) ;
  • 강병도 (자동차안전연구원) ;
  • 인정민 (자동차안전연구원)
  • Received : 2014.04.13
  • Accepted : 2014.06.11
  • Published : 2015.06.30
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Abstract

NDIR (Non-dispersive infrared Rays) alcohol sensor has been prototyped and its temperature characteristics were measured. In order to design novel optical alcohol sensor, elliptical structures with one common foci were modeled and analyzed their optical properties. After analyzing elliptic optical structures, a prototype alcohol sensor module was tested according to the temperature variations from $-20^{\circ}C$ to $35^{\circ}C$. The offset voltages of alcohol sensor decreased from 1.1056 V at the temperature $-20^{\circ}C$ to 0.7339 V at $35^{\circ}C$. However, the highest sensitivity of alcohol sensor showed about $303{\mu}V/ppm$ at room temperature.

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