电子鼻与原理解析（Electronic nose and principle analysis）.docVIP

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电子鼻与原理解析（Electronic nose and principle analysis）.doc

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电子鼻与原理解析（Electronic nose and principle analysis）

电子鼻与原理解析（Electronic nose and principle analysis） Key words: electronic nose Abstract: in order to solve the problems of artificial olfactory in practical application, we have the birth of electronic nose. Electronic nose is a kind of electronic device can simulate animals sense of smell, it includes gas sampler, gas sensor array and pattern recognition system three features, able to recognize the smell of the single and complex or gas. Over the past few decades, the electronic nose has been used in many fields, such as food quality control, beverage and spice industry, environmental monitoring, medical diagnostics, and aerospace projects. Electronic nose has wide application prospect and great market value. The research and development of electronic nose products has been increasing year by year since the first commercial electronic nose was born abroad in 1994. But at present, the research and development of electronic nose in China is still just beginning, and there are few commercial electronic nose products. Aiming at this situation, this paper develops a low-cost, portable electronic nose system. 0 the introduction Smell is closely related to human life. In daily life, many industries, including tobacco, food and cosmetics, still need peoples sense of smell to identify and judge samples. However, in practical application, people and animals olfactory abilities are often restricted by many conditions, and there are many disadvantages: high cost and long period of staff training for professional olfactory. The individual difference and subjectivity of artificial discrimination are large; In harsh environmental conditions, such as the presence of toxic gases or irritating gases, there is no obvious way to work for long periods of time. In order to solve the problem of artificial smell in practical application, we have the birth of electronic nose. Electronic nose is a kind of electronic device can simulate animals sense of smell, it includes gas sampler, gas senso