A Novel Feature Extraction Approach Using Window Function Capturing and QPSO-SVM for Enhancing Electronic Nose Performance

Sensors

Xiuzhen Guo¹  Chao Peng¹  Songlin Zhang¹  Jia Yan¹  Shukai Duan¹  Lidan Wang¹  Pengfei Jia¹  Fengchun Tian² 

[1] College of Electronics and Information Engineering, Southwest University, Chongqing 400715, China; E-Mails:;College of Communication Engineering, Chongqing University, Chongqing 400044, China; E-Mail:

关键词: feature extraction;    electronic nose;    MWFC;    QPSO;    SVM;   

DOI  :  10.3390/s150715198

来源: mdpi

【 摘 要 】

In this paper, a novel feature extraction approach which can be referred to as moving window function capturing (MWFC) has been proposed to analyze signals of an electronic nose (E-nose) used for detecting types of infectious pathogens in rat wounds. Meanwhile, a quantum-behaved particle swarm optimization (QPSO) algorithm is implemented in conjunction with support vector machine (SVM) for realizing a synchronization optimization of the sensor array and SVM model parameters. The results prove the efficacy of the proposed method for E-nose feature extraction, which can lead to a higher classification accuracy rate compared to other established techniques. Meanwhile it is interesting to note that different classification results can be obtained by changing the types, widths or positions of windows. By selecting the optimum window function for the sensor response, the performance of an E-nose can be enhanced.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.