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ICA electronic nose signal processing

Author: GaoXu
Tutor: WangPing
School: Zhejiang University
Course: Biomedical Engineering and Instrument
Keywords: Electronic nose signal processing QCM sensor Independent Component Analysis
CLC: R318.6
Type: Master's thesis
Year: 2001
Downloads: 233
Quote: 3
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Abstract


Electronic nose is a chemical analysis instrument , which consists of a composition having a specific electronic chemical sensor array and an appropriate pattern recognition system can recognize a single or composite odor , can also be used to identify a single component gas / steam or other mixture . The objective needs , sensor technology status and level of understanding of olfaction decided to the emergence and development of the electronic nose . Odor information acquired by olfactory sensor array and its processing information is extracted after pre-processing circuit and characterized in artificial olfactory another main content . This paper first introduces the electronic nose of the importance of concepts and the development of artificial olfactory structure and Overview of electronic nose signal processing and an overview of the signal processing of the electronic nose Some typical applications and the course of history . The second chapter focuses on the principle of quartz crystal oscillator , oscillation circuit , the QCM sensor sensing mechanism and film-forming step of coating method and results ; Chapter III presents the design of the sensor measurement system , including the mixer circuit as well as kinds of measuring instruments and computer programming methods of the IEEE-488 excuses . Chapter ICA ( independent component analysis ) the background of the methods , principles, methods . Finally, we use the ICA algorithm in the case of temperature, humidity interference signal of breath acetone , independent component analysis , and were compared with the the obtained acetone main PCA method component signal .

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CLC: > Medicine, health > Basic Medical > Medical science in general > Biomedical Engineering > Apparatus, equipment
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