Integrated electronic nose sensing structure and use method thereof

Abstract

The invention relates to the technical field of electronic noses, and provides an integrated electronic nose sensing structure and a use method thereof. The integrated electronic nose sensing structure comprises a functional layer and a gas-sensitive material layer connected with the functional layer, the functional layer can support the gas-sensitive material layer; the gas-sensitive material layer comprises at least two gas-sensitive materials, the gas-sensitive materials form at least one gas-sensitive area, and any two adjacent gas-sensitive areas are in electric contact; a plurality of electrode sites are arranged on the peripheral side of the gas-sensitive material, one part of the electrode sites are used for electrifying, and the other part of the electrode sites are used for collecting electric signals, so that resistance characteristic parameters of each gas-sensitive area are calculated according to the electric signals based on electrical impedance imaging. By using the integrated electronic nose sensing structure provided by the invention, more gas-sensitive materials can be added in the same volume, and detection of more types of odors is realized. And meanwhile, electrical impedance imaging is utilized to collect information of the integrated gas sensitive material, so that a collection circuit can be further simplified, and the integration level is improved.

Description

technical field [0001] The invention relates to the technical field of electronic noses, in particular to an integrated electronic nose sensing structure and a method for using the same. Background technique [0002] The electronic nose uses electrochemical means to detect the gas. The electronic nose in the prior art is composed of a variety of gas sensors. Each gas sensor uses a specific gas-sensitive material as the sensing material, and the gas is sensitive to the gas when it comes into contact with it. The electrical impedance of the material changes, and the gas to be measured can be detected by measuring the change of its electrical impedance. [0003] In order to improve the detection accuracy of the electronic nose and the types of gases that can be detected, it is necessary to increase the types of characteristic gas sensors, which will undoubtedly increase the volume of the electronic nose and limit the development of the electronic nose. SUMMARY OF THE INVENTIO...

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Problems solved by technology

[0004] The invention provides an integrated electronic nose sensing structure and its use method, which is used to solve the defect that the volume of the electronic nose will increase when the accuracy of electronic detection and the detection of gas types are improved in the prior art, so as to maintain the volume of the electronic nose Under the same premise, the accuracy of electronic nose detection and the effect of increasing the types of gases that can be detected

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