Bionic olfactory detection and analysis device and its detection and analysis method based on dynamic gas distribution

Abstract

The invention discloses a bionic smell detection and analysis device based on dynamic gas distribution and a detection and analysis method of the bionic smell detection and analysis device. The bionic smell detection and analysis device comprises a dynamic gas distribution system and a bionic smell detection and analysis system. The dynamic gas distribution system comprises a high-concentration gas distribution branch, a low-concentration gas distribution branch and a carrier gas conveying branch; the bionic smell detection and analysis system comprises a smell detection unit and a measurement and control unit; the smell detection unit comprises a sample gas generation chamber, a flowmeter, a gas sensor array and a sight glass that are sequentially connected; a temperature and humidity sensor is embedded into the sight glass; the smell measurement and control unit comprises a measurement and control computer; an output end of the measurement and control computer is connected with a mass flow controller and a sensor heating voltage control end of the dynamic gas distribution system; and an input end of the measurement and control computer is connected with a sensor data acquisition end and the temperature and humidity sensor. The bionic smell detection and analysis device and the detection and analysis method can precisely prepare sample gases in different concentrations for smell detection and analysis; and carrier gas flow, gas temperature and humidity and sensor working voltage can be adjusted to achieve optimal detection control, detection and analysis of sample gas smell.

Description

technical field [0001] The invention relates to a non-destructive detection and analysis device for agricultural products, in particular to a bionic olfactory detection and analysis device based on dynamic gas distribution and a detection and analysis method thereof. Background technique [0002] With the in-depth study of bionics theory and the development of computer technology, people began to study bionic olfaction in the 1980s. Bionic olfactory detection has attractive application prospects in the fields of food industry, environmental monitoring, disease detection and national defense construction. In recent years, this technical field has received widespread attention and attention. Chinese patent authorization announcement number: CN101135689B discloses an electronic nose development platform; Chinese patent authorization announcement number: CN203422675U discloses a dynamic trace gas concentration gas distribution device ; Chinese patent authorization announcement ...

AI Technical Summary

Problems solved by technology

After reviewing the literature, the existing bionic olfactory detection and analysis devices only complete the direct detection and analysis of the gas to be measured, without considering the concentration, temperature, humidity and sensor operating voltage changes of the gas to be measured on the adaptability and influence of the sensor's operating voltage, which is not conducive to the development of the sense of smell Validity and Accuracy of Testing

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