A 4×4 logarithmic spike timing encoding scheme for olfactory sensor applications

Bin Guo, Amine Bermak, Maxime Ambard, Dominique Martinez

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents a 4×4 logarithmic spike-timing encoding scheme used to translate the output of an integrated tin oxide gas sensor array into spike sequence, which is exploited to perform gas recognition. Hydrogen, Ethanol and Carbon monoxide were used to characterize the gas sensor array. The collected data were then used to test the proposed circuit for spike encoding and gas recognition. Simulation results illustrate that a particular analyte gas generates a unique spike pattern with certain spike ordering sequence, which is independent of the gas concentration. This unique spike sequence can thus be used to recognize different gases. In addition, the concentration information can also be extracted from the time-to-the-flrst spike in the sequence making it possible to perform not only gas/odor recognition but quantification as well.

Original languageEnglish
Article number4253448
Pages (from-to)3554-3557
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2007
Externally publishedYes

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Keywords

  • Gas sensor array
  • Logarithmic spike timing
  • Spike sequence
  • Tin oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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