New pattern recognition system in the e-nose for Chinese spirit identification |
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Institution: | School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract: | This paper presents a new pattern recognition system for Chinese spirit identification by using the polymer quartz piezoelectric crystal sensor based e-nose. The sensors are designed based on quartz crystal microbalance(QCM) principle,and they could capture different vibration frequency signal values for Chinese spirit identification. For each sensor in an8-channel sensor array, seven characteristic values of the original vibration frequency signal values, i.e., average value(A),root-mean-square value(RMS), shape factor value(S_f), crest factor value(C_f), impulse factor value(I_f), clearance factor value(CL_f), kurtosis factor value(K_v) are first extracted. Then the dimension of the characteristic values is reduced by the principle components analysis(PCA) method. Finally the back propagation(BP) neutral network algorithm is used to recognize Chinese spirits. The experimental results show that the recognition rate of six kinds of Chinese spirits is 93.33% and our proposed new pattern recognition system can identify Chinese spirits effectively. |
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Keywords: | new pattern recognition system polymer quartz piezoelectric crystal sensor e-nose principle components analysis (PCA) back propagation (BP) algorithm Chinese spirit identification |
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