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Implementation of a Portable Electronic Nose System for Field Screening

필드 스크린을 위한 휴대용 전자코 시스템의 구현

  • Byun, Hyung-Gi (Dept. of Information & Communication Engineering, Samcheok National University) ;
  • Lee, Jun-Sub (Dept. of Electronic Engineering, Samcheok National University) ;
  • Kim, Jeong-Do (Dept. of Computer Control Engineering, Samcheok National University)
  • 변형기 (삼척대학교 정보통신공학과) ;
  • 이준섭 (삼척대학교 전자공학과) ;
  • 김정도 (삼척대학교 컴퓨터응용제어공학과)
  • Published : 2004.01.30

Abstract

There is currently much interest in the development of instruments that emulate the senses of humans. Increasingly, there is demand for mimicking the human sense of smell, which is a sophisticated chemosensory system. An electronic nose system is applicable to a large area of industries including environmental monitoring. We have designed a protable electronic nose system using an array of commercial chemical gas sensors for recognizing and analyzing the various odours. In this paper, we have implemented a portable electronic nose system using an array of gas sensors for recognizing and analyzing VOCs (Volatile Organic Compounds) in the field. The accuracy of a portable electronic nose system may be lower than an instrument such as GC/MS (Gas Chromatography/Mass Spectrometer). However, a portable electronic nose system could be used on the field and showed fast response to pollutants in the field. Several different algorithms for odours recognition were used such as BP (Back-Propagation) or LM-BP (Levenberq-Marquardt Back-Propagation). We applied RBF (Radial Basis Function) Network for recognition and quantifying of odours, which has simpler and faster compared to the previously used algorithms such as BP and LM-BP.

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