Characterization of a logarithmic spike timing encoding scheme for a 4×4 tin oxide gas sensor array

Kwan Ting Ng, Bin Guo, Amine Bermak, Dominique Martinez, Farid Boussaid

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, the performance of a logarithmic spike timing encoding scheme for gas sensor is analyzed. Utilizing the non-linear (power law) relationship between tin oxide (SnO 2) gas sensor sensitivity and gas concentration, we designed and fabricated a time domain readout circuit for a 4x4 SnO 2 gas sensor array. A unique pattern is generated by the readout scheme for each gas, irrespective of the gas concentration. This pattern is used as the signature of the gas. Gas identification is achieved by matching the generated signature with pre-stored reference signatures. The design was implemented in standard CMOS technology. Reported experimental results demonstrate the fabricated gas sensor exhibits the detection accuracy comparable to computationally expensive classifiers.

Original languageEnglish
Title of host publicationIEEE Sensors 2009 Conference - SENSORS 2009
Pages731-734
Number of pages4
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventIEEE Sensors 2009 Conference - SENSORS 2009 - Christchurch, New Zealand
Duration: 25 Oct 200928 Oct 2009

Other

OtherIEEE Sensors 2009 Conference - SENSORS 2009
CountryNew Zealand
CityChristchurch
Period25/10/0928/10/09

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ng, K. T., Guo, B., Bermak, A., Martinez, D., & Boussaid, F. (2009). Characterization of a logarithmic spike timing encoding scheme for a 4×4 tin oxide gas sensor array. In IEEE Sensors 2009 Conference - SENSORS 2009 (pp. 731-734). [5398548] https://doi.org/10.1109/ICSENS.2009.5398548