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Vol. 176, Issue 8, August 2014, pp. 21-26

 

Bullet

 

Study on Detection and Identification of Gas Sensor Based on Chromatographic Separation
 

Xiao Wanfu, Chang Yaping

School of management, Huazhong University of Science and Technology,
Wuhan 430074, China
Tel.: 18666401971

Received: 23 May 2014 /Accepted: 31 July 2014 /Published: 31 August 2014

Digital Sensors and Sensor Sysstems

 

Abstract: This paper developed a chromatographic separation and sensor based on a combination of gas detector, the common precursor gases such as acetone, ether, chloroform and other gas detection. According to the obtained experimental data, proposed one kind based on the principal component analysis and support vector machine algorithm of gas chromatography identification sensor signal processing and recognition; the method used for detection and identification of the air in the precursor gases combine tester self-developed, obtained very good result. This paper designed and developed a chromatographic separation and sensor based on the combination of gas detection instruments, to multi gas detection instrument. On separation characteristics using chromatography, to solve the traditional single common precursor gas detection. The use of a pre processing based on domestication, principal component analysis for feature extraction method of all kinds of gas data. This effectively avoids the sensor substrate voltage fluctuation and gas concentration effects on body recognition, and reduces the gas sample feature vector dimension.

 

Keywords: Gas detection, Chromatogram sensor, PCA, Support vector machine.

 

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