Method and device for carrying out gas recognition based on single sensor

Abstract

The invention discloses a method and device for carrying out gas recognition based on a single sensor. The method includes the following steps that: a short-period pulse heating voltage is applied tothe single sensor, the test current of an unknown gas is obtained, and maximum time and a gas sensitive response value sequence are calculated separately; the position of the maximum time in a concentration-maximum time relation curve in a pre-established gas characteristic recognition library is determined according to the maximum time, and the possible types and concentrations of the gas are preliminarily judged; the closed envelope line of the gas sensitive response value sequence in a radar map is matched with a closed envelope line cluster in a radar map in the pre-established gas characteristic recognition library, and the type and concentration of the gas are finally recognized based on preliminary judgment. With the method and device adopted, gas recognition can be realized with the single sensor, which enables simplicity and easiness in operation, and the size of the sensor is greatly reduced; short-period thermal modulation processing is adopted, so that the single sensor isperiodically under a plurality of experimental temperatures, and therefore, a large quantity of experimental data can be rapidly obtained, and working efficiency is further improved.

Description

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AI Technical Summary

Benefits of technology

This patented innovation allows us to detect various gases easily without having to use expensive or complicated equipment like other methods such as infrared spectrometry. It uses an individual sensor instead of each one individually, making them smaller but more reliable than previous systems while also being able to handle many gases simultaneously. By applying a special type of process called thermoacoustics, we have developed a system where these signals from the sensor react differently depending upon certain factors like pressure changes caused by gases within its environment. These results help identify particular ones better indicating their presence/absence statuses.

Problems solved by technology

This patented technical solution described involves developing new types of material called nanocomposites made up mostly of metals or semiconductor particles, specifically iron(II)-iron(III), copper(Iron)(Cu). These compositions can absorb many gases at once without being too complicated compared to traditional methods like chemistry techniques involving complex chemical reactions. By combining these special elements together into one molecule, they are able to provide better performance than current alternatives while reducing costs associated therewith.

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