A temperature compensation method for a portable electronic nose enrichment device

Abstract

The invention relates to a temperature compensation method for a portable electronic nose enrichment device, which includes: building an enrichment device based on the principle of adsorption and desorption, and the desorption method is heating; collecting electronic nose data in the early stage; establishing an electronic nose data temperature compensation model: The temperature compensation model of the enrichment device is established by machine learning method, and the regression model training is carried out. The temperature compensation model includes multiple input and output data. The electronic nose response data of the gas to be measured before enrichment and the gas to be measured after enrichment The response data of the electronic nose, the response data generated by the high-temperature air of the enrichment device and the interference odor are used as the input of the temperature compensation model; during training, the output of the compensation model is the electronic nose response data of the enriched gas to be tested after water cooling, and Keep the input and output data from the same bag of experimental gas; electronic nose detection: remove the water cooling cooling module, collect the enriched electronic nose detection data, and realize the temperature compensation of the enriched electronic nose detection data.

Description

technical field [0001] The invention relates to a gas temperature compensation method of a portable electronic nose enrichment device. Background technique [0002] The electronic nose is an artificial olfactory system. After the gas to be tested enters the electronic nose air chamber, the recognition function is realized by analyzing the response of the sensor array. The scope of application of the electronic nose is mainly concentrated in agriculture and forestry, food, wine, tea, etc. At present, the electronic nose is gradually used in the detection of volatile organic compounds (volatile organic compounds, VOCs) or leather volatile gases in the environment. Although the smell of VOCs gas is relatively pungent , but its concentration is very low (volume concentration is on the order of ppb, ppb:partsperbillion). Most of the gas sensors used in electronic noses are metal-oxide-semiconductor (MOS) gas sensors, and the detection accuracy is on the order of ppm (parts per m...

AI Technical Summary

Problems solved by technology

The method proposed in this patent can realize the collection and enrichment of exhaled gas, and then improve the subsequent detection effect, but it does not use the electronic nose device to analyze and process the temperature of the enriched gas, and there is no relevant cooling device or temperature compensation algorithm. content

[0008] In summary, the enrichment device can increase the concentration of the gas to be measured and solve the problem of insufficient detection limit of the electronic nose. However, the enrichment device based on adsorption, heating and desorption of the adsorbent will cause the gas temperature to be too high, which will affect the detection effect of the electronic nose. Therefore, the research on the temperature compensation method of the portable electronic nose enrichment device is of great significance for improving the detection performance of the electronic nose

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