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Sensors 2005, 5(1), 85-96; doi:10.3390/s5010085
Article

Circuit and Noise Analysis of Odorant Gas Sensors in an E-Nose

1, 2,*  and 2
1 College of Communication Engineering, Chongqing University, Chongqing, P.R. China 400044 2 School of Engineering, University of Guelph, Guelph, ON, Canada, N1G 2W1
* Author to whom correspondence should be addressed.
Received: 8 September 2004 / Accepted: 12 December 2004 / Published: 28 February 2005
(This article belongs to the Special Issue Sensors for Environmental Monitoring)
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Abstract

In this paper, the relationship between typical circuit structures of gas sensorcircuits and their output noise is analyzed. By using averaged segmenting periodical graphand improved histogram estimation methods, we estimated their noise power spectra andoptimal probability distribution functions (pdf). The results were confirmed throughexperiment studies.
Keywords: gas sensor; circuit; noise; power spectrum; probability distribution function. gas sensor; circuit; noise; power spectrum; probability distribution function.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Tian, F.; Yang, S.X.; Dong, K. Circuit and Noise Analysis of Odorant Gas Sensors in an E-Nose. Sensors 2005, 5, 85-96.

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