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Title: Mobile electronic nose based on carbon nanotube-SnO2 gas sensors: Feature extraction techniques and its application
Authors: Chatchawal Wongchoosuk
Anurat Wisitsoraat
Adisorn Tuantranont
Teerakiat Kerdcharoen
Mahidol University
National Electronic and Computer Technology Center
Keywords: Computer Science;Engineering
Issue Date: 22-Oct-2009
Citation: 2009 6th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2009. Vol.1, (2009), 474-477
Abstract: In this paper, a mobile electronic nose (E-nose) based on novel hybrid carbon nanotube-SnO2 gas sensors is described. The instrument combines new feature extraction techniques including integral and primary derivative, which leads to higher classification performance comparing with the classical features (Δ R and Δ R/R0). The results show that doping of carbon nanotube (CNT) improves the sensitivity of hybrid gas sensors while quantity of CNT has a direct effect on selectivity to volatile organic compounds, i.e. MeOH and EtOH. The realworld applications of this E-nose were also presented. Based on the proposed methods, this instrument can monitor and classify 1% vol. of MeOH contamination in whiskey. ©2009 IEEE.
Appears in Collections:Scopus 2006-2010

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