Detection of target gases and optimal selection of SAW sensors for E-Nose applications

  • Authors:
  • T. T. Sunil;Subhasis Chaudhuri

  • Affiliations:
  • Dept. of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, India;Dept. of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai, India

  • Venue:
  • Proceedings of Conference on Advances In Robotics
  • Year:
  • 2013

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Abstract

Detection of hazardous gases has several commercial and industrial applications. Surface Acoustic Wave(SAW) sensors can provide chemical signatures of gases. A set of SAW sensors in conjunction with a suitably trained pattern recognition engine can work as an Electronic Nose(E-Nose) for a set of gases. For the best performance, the sensors used in the nose must have optimal responses to all the target gases. We first present a method for target gas detection from the sensed data and subsequently describe two novel candidate algorithms used for selection of a subset of sensors from a given set of sensors for an electronic nose.