A bionic detection device and method for temporal and air odor information of an electronic nose

Abstract

The invention relates to a bionic detection device and method for electronic nose time-space smell information. A gas sensing array and a bionic air chamber are constructed in conjunction with a temperature modulation technology and a film retardation technology, and smell information data of various substances to be identified are acquired to be identified in a classified way through a subsequent mode identification algorithm. The method comprises the following steps: changing the sensitivity and selectivity of a sensor specific to different smell components through the temperature modulation technology, forming a scanning response process specific to different components of complex smell, and acquiring rich time sequence signals of different sensors in the array; setting different breathable films / semi-breathable films in an air path, simulating biological nasal cavity and mucus functions according to the characteristic of difference of diffusion transmission rates of various gas components, and acquiring the difference through the sensors distributed at different positions, namely, spatial information reflecting air chamber spreading of the smell. By adopting the method, the time-space information of the complex gas components is acquired, and a signal foundation is laid for fine identification of complex smell.

Description

technical field [0001] The invention relates to a bionic detection device and method for temporal and air odor information of an electronic nose. Background technique [0002] The electronic nose is an intelligent instrument constructed by simulating the principle of biological smell, such as the Chinese patent application number 201410502332.X. The electronic nose usually consists of a cross-sensitive gas sensor array and a suitable pattern recognition algorithm to automatically complete the qualitative or quantitative identification of odors. It has broad application prospects in many fields such as food processing, medical diagnosis, environmental monitoring and public safety. The electronic nose has been developed for more than 40 years and has not been able to move from the laboratory to the actual situation of production and life, or can only simply identify a few specific odors in a given occasion, which is far less than the human nose's ability to identify thousands...

AI Technical Summary

Problems solved by technology

However, it is rarely reported in the current literature that these influencing factors are used to construct the air chamber and sensor array of the electronic nose system, so as to be closer to the biological olfactory reality and obtain richer odor information.

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