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Open AccessArticle

Real-Time Gas Identification by Analyzing the Transient Response of Capillary-Attached Conductive Gas Sensor

1
Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2
Faculty of Engineering, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
3
Faculty of Medical Science, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
*
Author to whom correspondence should be addressed.
Sensors 2010, 10(6), 5359-5377; https://doi.org/10.3390/s100605359
Received: 10 March 2010 / Revised: 29 April 2010 / Accepted: 30 April 2010 / Published: 28 May 2010
(This article belongs to the Section Chemical Sensors)
In this study, the ability of the Capillary-attached conductive gas sensor (CGS) in real-time gas identification was investigated. The structure of the prototype fabricated CGS is presented. Portions were selected from the beginning of the CGS transient response including the first 11 samples to the first 100 samples. Different feature extraction and classification methods were applied on the selected portions. Validation of methods was evaluated to study the ability of an early portion of the CGS transient response in target gas (TG) identification. Experimental results proved that applying extracted features from an early part of the CGS transient response along with a classifier can distinguish short-chain alcohols from each other perfectly. Decreasing time of exposition in the interaction between target gas and sensing element improved the reliability of the sensor. Classification rate was also improved and time of identification was decreased. Moreover, the results indicated the optimum interval of the early transient response of the CGS for selecting portions to achieve the best classification rates. View Full-Text
Keywords: gas sensor; transient response; electronic nose; feature extraction gas sensor; transient response; electronic nose; feature extraction
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MDPI and ACS Style

Bahraminejad, B.; Basri, S.; Isa, M.; Hambli, Z. Real-Time Gas Identification by Analyzing the Transient Response of Capillary-Attached Conductive Gas Sensor. Sensors 2010, 10, 5359-5377.

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