Experimental study on odor compass system based on gas sensor array and DSP technology

Liwei Chen, Jianhua Yang, Zhonglin Tang

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

Abstract

Based on metal oxide gas sensors and DSP technology an odor compass is designed in this paper. Odor compass estimates direction of point odor source by analyzing responses of sensors which are placed on different concentration gradient. Main structure consists of distributed metal oxide gas sensors and plexiglas material. Signal sampling and processing are accomplished by DSP system. The directivity of whole system is tested in uniform wind field. Experimental result shows that the responses for the odor sources with 30° disparity have obvious difference. Ratio of resistance response is selected as characteristic quantity. In this way, influence which is generated from individual difference of sensors is effectively eliminated.

Original languageEnglish
Title of host publicationEquipment Manufacturing Technology and Automation
Pages1102-1106
Number of pages5
DOIs
StatePublished - 2011
Event2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011 - Guangzhou, China
Duration: 16 Sep 201118 Sep 2011

Publication series

NameAdvanced Materials Research
Volume317-319
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011
Country/TerritoryChina
CityGuangzhou
Period16/09/1118/09/11

Keywords

  • DSP
  • Metal oxide gas sensor
  • Odor compass
  • Odor source localization

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