Recovery of micro gas sensor array response from drift effect by means of DWT and feature extraction for discriminating gas mixtures

Sang Jin Lee, Young Wung Kim, Guk Hee Kim, Gi Joon Jeon, In Soo Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the case of semiconductor-type gas sensors, since the reproductivity and selectivity are often declined because of a drift effect, it is hard to extract important features from the micro gas sensor array response to discriminate gas mixtures. In this paper, by using the DWT(Discrete Wavelet Transform) we eliminate the factors which cause the drift and extract the features from the transformed patterns of thermally modulated micro gas sensor array responses. This method makes it possible to minimize the drift effect and to extract important features easily and effectively.

Original languageEnglish
Title of host publicationProceedings of SICE Annual Conference 2010, SICE 2010 - Final Program and Papers
PublisherSociety of Instrument and Control Engineers (SICE)
Pages2945-2948
Number of pages4
ISBN (Print)9784907764364
StatePublished - 2010

Publication series

NameProceedings of the SICE Annual Conference

Keywords

  • DWT
  • Feature extraction
  • Gas mixtures
  • Micro gas sensor array
  • Recovery of drift

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