Method and apparatus for inspecting two-kind gas sensor array combination odour

Abstract

A device used for detecting odor is prepared as forming hardware by pure nitrogen, oxygen supply unit, odor generating chamber, color sensitive transducer array of odor, metal oxide transducer array of odor, reaction chamber A and B, image obtaining unit, signal collection unit, computer and constant-temperature unit; forming software by device control module, signal collection module, signal fusion-treatment module and mode identification module. Its detecting method is also disclosed.

Description

technical field [0001] The invention relates to an odor detection method and device, in particular to an odor detection method and device based on the combination of a metal oxide gas sensor array and a color-sensitive gas sensor array. Background technique [0002] At present, most commercialized and researched odor detection systems (electronic nose systems) are based on a single type of traditional gas sensor array, such as the electronic nose Aromascan of the British Louis Development Company, which is based on an organic conductive polymer (PC) type gas sensor. Array, FOX6000 of French Alpha Company is based on metal oxide semiconductor (MOS) type gas sensor array, the electronic nose developed by University of Rome in Italy is based on mass type gas sensor array, and so on. Although the electronic nose based on a single type of gas sensor array can meet the detection requirements in some occasions, the odors that can be detected are limited after all. When an electroni...

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Problems solved by technology

However, this paper only uses the color change of the color-sensitive gas sensor array to judge the type and concentration of a specific compound, and the identification of odor is limited.

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