Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지
DOI QR코드

DOI QR Code

Temperature Compensation and Characteristics of Non-dispersive Infrared Alcohol Sensor According to the Intensity of Light

입사광량의 조절과 이에 따른 비분산 적외선 알코올 센서의 온도 특성과 보정

  • Kim, JinHo (KNUT(Korea National University of Transportation) Dept. of Mechanical Eng.) ;
  • Cho, HeeChan (KNUT(Korea National University of Transportation) Dept. of Mechanical Eng.) ;
  • Yi, SeungHwan (KNUT(Korea National University of Transportation) Dept. of Mechanical Eng.)
  • Received : 2017.12.19
  • Accepted : 2018.01.29
  • Published : 2018.01.31
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we describe the thermal characteristics of the output voltages of ethanol gas sensor according to the amount of radiation incident on the infrared sensors located at each focal point of two elliptical waveguides. In order to verify the output characteristics of the gas sensor according to the amount of incident light on the infrared sensor, two combinations of sensor modules were fabricated. Hydrophobic thin film is deposited on one of the reflectors of sensor modules and one of the two infrared sensors was equipped with a hollow disk (10 Ø), and the temperature characteristics of the infrared sensor equipped with the hollow disk (10 Ø) and the infrared sensor without the disk were tested. The temperature was varied from 253 K to 333 K at 10 K intervals based on 298 K. The properties of ethanol gas sensor have been identified with respect to varying temperature for a range of ethanol concentration from 0 ppm to 500 ppm. In the case of an infrared sensor equipped with a hollow disk (10 Ø), the output voltage of the sensor decreased by 0.8 mV and 1 mV, respectively, as the temperature increased. Conversely, the output voltage of the diskless infrared sensor showed an average increase of 67 mV and 57 mV as the temperature increased. The ethanol concentrations estimated on the basis of results show an error of more than 10 % for less than 100 ppm concentration. However, if the ethanol concentration exceeds 100 ppm, the gas concentration can be estimated within the range of ${\pm}10%$.

Keywords

References

  1. 경찰청, "음주운전 삼진아웃 처분현황", 2017.
  2. California legislative, "SB-1046 Driving under the in-fluence: ignition interlock device", 2016.
  3. G. S. Ranganath, "Black-Body Radiation", J. Sci. Educ., Vol. 13(2), General articles 115, 2008.
  4. L. Ma1, J. Yang, J. Nie, "Two forms of Wien's dis-placement law", Lat. Am. J. Phys. Educ., Vol. 3(3), 2009.
  5. R.V. Maikala, "Modified Beer's law-historical perspec-tives and relevance in near-infrared monitoring of optical properties of human tissue", Inter. J. Ind. Ergonomics, Vol. 40, pp. 125-134, 2010. https://doi.org/10.1016/j.ergon.2009.02.011
  6. 환경부, "비분산적외선 방식의 보급형 일산화탄소 가스 센서 개발", 2009.
  7. J.M. Park, N.K. Min, S.Y. Kweon, and S.H. Yi, "Novel NDIR CO2 sensor with two concave mirrors", Proc. Of APCOT2006, D-15, Singapore, June 25-28, 2006.
  8. S.H. Jang, S.H. Chung, and S.H. Yi, "Characteristics of an optical waveguide with two identical elliptical structure", J. Korean Institute of Gas, Vol. 18(2), pp. 48-54, 2014. https://doi.org/10.7842/kigas.2014.18.2.48
  9. http://www.scscookson.com/
  10. S.H. Yi, Y.H. Park, J.K. Lee, " Temperature dependency of non-dispersive infrared carbon dioxide gas sensor by using White-cell structure", J. Sensor Sci. & Tech., Vol. 25(5), pp. 377-381, 2016. https://doi.org/10.5369/JSST.2016.25.5.377
  11. S. H. Yi, "Temperature dependency of non-dispersive infrared carbon dioxide gas sensor by using infrared sensor for compensation", J. Sensor Sci. & Tech., Vol. 25(2), pp. 124- 130, 2016. https://doi.org/10.5369/JSST.2016.25.2.124
  12. S. Kim and C. K. Hwangbo, "Derivation of the center-wave length shift of narrow-bandpass filter under temperature change", Opt. Express, Vol. 12(23), pp. 5634-5639, 2004. https://doi.org/10.1364/OPEX.12.005634
  13. C.N Chen, "Fully quantitative characterization of CMOSMEMS polysilicon/titanium thermopile infrared sensors", Sens. Actuators B Chem., Vol.161, pp.892-900, 2012. https://doi.org/10.1016/j.snb.2011.11.058