Integrated electronic nose sensing structure and use method thereof

An integrated electronics and sensing technology, applied in the field of electronic nose, can solve the problems of increasing the volume of the electronic nose, and achieve the effects of improving integration, enriching gas fingerprint characteristics, and simplifying the acquisition circuit

CN114594141APending Publication Date: 2022-06-07TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-06-07

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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.
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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...

Examples

Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Combine below Figure 1-Figure 5 The integrated electronic nose sensing structure provided in the embodiments of the present invention is described.

[0037] Specifically, the integrated electronic nose sensing structure includes a functional layer and a gas-sensing material layer 1 connected with the functional layer.

[0038] Among them, the functional layer can support the gas-sensitive material layer 1...