Device and method for gas quantitative analysis

Abstract

The present invention discloses a device and a method for gas quantitative analysis. A gas mixing proportioning device is connected with a closed box; standard gas and target gas are mixed at a presetratio to obtain mixed gas, which is input into the pre-vacuumized closed box; an environmental control device is connected with the closed box; temperature and humidity in the closed box are adjustedto a preset temperature and a preset humidity; an electronic nose is used for measuring the type of the mixed gas in the closed box, which is then compared with the mixed gas type; if they are the same, it is determined that the electronic nose works normally. With the disclosed gas quantitative analysis device and method, a known type of mixed gas is prepared and measured by the electronic nose,finally it can be determined whether the electronic nose accurately measures gas through the measurement result.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a gas quantitative analysis device and method. Background technique [0002] The response of artificial olfactory sensors to odors is complex and determined by the interaction between odor molecules and sensor sensitive materials. In the process of artificial olfactory measurement, environmental factors will affect the response of the sensor array, among which temperature, humidity and atmospheric pressure are the environmental factors that have the greatest impact on the response of the sensor array. The influence of temperature, humidity and atmospheric pressure is not only reflected in the influence on the sensor array, but also in the high correlation with the composition of the measured gas. Therefore, the prior art generally adopts a nonlinear compensation method to compensate the measured odor, so as to achieve the purpose of gas analysis. [0003] However, due to the no...

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Problems solved by technology

[0003] However, due to the non-linear compensation method used to analyze the gas, the results obtained by the analysis are inaccurate. Therefore, it is necessary to verify the feasibility of the mixed odor signal separation method and the compensation method of environmental influence factors.

However, in the prior art, there is no experimental device that integrates the ratio of mixed gas, temperature, humidity and pressure adjustment. Therefore, because there is no gas analysis device in the prior art, it is impossible to verify the device that uses the nonlinear compensation method to analyze the gas. Are the results of the analysis accurate?

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