Electronic nose system based on carbon nanotube micro-nano gas sensor array

Abstract

The invention relates to an electronic nose system based on a carbon nanotube micro-nano gas sensor array. The system comprises a gas sensor array and an identification system used for identifying different types of smells according to the gas sensor array. The gas sensor array is connected with the identification system, and is a carbon nanotube micro-nano gas sensor array. In the carbon nanotube micro-nano gas sensor array, each carbon nanotube micro-nano gas sensor comprises a carbon nanotube electrode, an aluminum plate electrode, and an insulation film. The insulation film is covered on the carbon nanotube electrode. The insulation film is provided with a row of recesses corresponding to the polarity distributions of different gases. The aluminum plate electrode s covered on the insulation film. The electronic nose system provided by the invention has the advantages of cross-sensitivity effective prevention, high accuracy, external influence prevention, high gas selectivity, and low cost.

Description

technical field [0001] The invention relates to an electronic nose system. Background technique [0002] Electronic nose technology, that is, the mechanism of biological olfactory sensitivity and the imitation technology of the function of the biological olfactory system. In 1982, Persaud and Dodd of the University of Warwick in the United Kingdom proposed the concept of electronic nose. The electronic nose system they developed included gas sensor arrays and pattern recognition. The two parts of the system can distinguish the smell of 21 complex volatile chemical substances such as eucalyptol, rose oil, and clove bud oil. In 1994, Gardner of the University of Warwick in the United Kingdom and Bartlett of the University of Southampton used the term "electronic nose" and gave a definition - "The electronic nose is a chemical sensor array with partial selectivity and appropriate pattern recognition. System components, instruments capable of recognizing simple or complex odors...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing electronic nose system, such as cross-sensitivity, low accuracy, easy to be affected by the external environment, small gas selectivity, and high cost, the present invention provides an effective cross-sensitivity avoidance, high accuracy, and easy Electronic nose system based on carbon nanotube micro-nano gas sensor array, which is affected by the external environment, has high gas selectivity and low cost

Images