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Noise and Repeatability of Odorant Gas Sensors in an E-Nose
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Author(s): Fengchun Tian (Chongqing University, China), Simon X. Yang (University of Guelph, Canada), Xuntao Xu (Mianyang Vocational and Technical College, China)and Tao Liu (Chongqing University, China)
Copyright: 2011
Pages: 23
Source title:
Intelligent Systems for Machine Olfaction: Tools and Methodologies
Source Author(s)/Editor(s): Evor L. Hines (University of Warwick, UK)and Mark S. Leeson (University of Warwick, UK)
DOI: 10.4018/978-1-61520-915-6.ch004
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Abstract
The impact of the characteristics of the sensors used for electronic nose (e-nose) systems on the repeatability of the measurements is considered. The noise performance of the different types of sensors available for e-nose utilization is first examined. Following the theoretical background, the probability density functions and power spectra of noise from real sensors are presented. The impact of sensor imperfections including noise on repeatability forms the basis of the remainder of the chapter. The impact of the sensors themselves, the effect of data pre-processing methods, and the feature extraction algorithm on the repeatability are considered.
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