Mixed gas component concentration identification method and system

A technology of gas components and mixed gases, applied in the analysis of gas mixtures, analysis materials, measurement devices, etc., can solve problems such as non-linear signal response and nonlinear response deviation

Active Publication Date: 2019-08-23
CHINA PETROLEUM & CHEM CORP +2
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Problems solved by technology

[0005] However, the inventors of the present application have found in the process of practicing the present application that there are at least the following defects in the related art: although the gas sensor has a linear response relationship between the response signal and the gas concentration within a limited concentration range, it is not su

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  • Mixed gas component concentration identification method and system
  • Mixed gas component concentration identification method and system
  • Mixed gas component concentration identification method and system

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Embodiment Construction

[0043] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0044] Such as figure 1 Shown is the method for identifying the component concentration of the mixed gas according to the embodiment of the present invention, including:

[0045] S11. Obtain the detection response value of the gas sensor for the target gas component in the mixed gas, and determine the guessed concentration value based on the detection response value;

[0046] Specifically, the term "detection response value" may be an electrical signal corresponding to the corresponding magnitude fed back by the sensor for the physical quantity of the target gas component (for ex...

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Abstract

The embodiments of the invention provide a mixed gas component concentration identification method and system, and belongs to the technical field of multi-component gas sensing. The mixed gas component concentration identification method includes the following steps: obtaining a detection response value of a gas sensor for a target gas component in mixed gas and determining a guess concentration value based on the detection response value; executing Newton iterative calculation based on the guess concentration value and a Newton iterative calculation method and determining corresponding iterative concentration values in order for iterative calculation; determining change amount in the concentration values before and after each iterative calculation and stopping the iterative calculation when the change amount is less than a preset concentration threshold; and determining the concentration of the target gas component according to the iterative concentration value determined by the lastiterative calculation. Combined the Newton iterative calculation method and detection response prediction technology, the mixed gas component concentration identification method and system reduce thelimitation of linear concentration response of the gas sensor to the detection of the component concentration of the actual mixed gas and ensure the high accuracy of gas component concentration detection.

Description

technical field [0001] The invention relates to the technical field of multi-component gas sensing, in particular to a method and system for identifying the component concentration of a mixed gas. Background technique [0002] With the development of "human-computer interaction" intelligent detection technology in virtual environment, multi-component gas sensor, as a functional device for the collection, conversion, transmission and processing of olfactory extension information, has become a It is an indispensable technical tool in the fields of risk warning, analysis and detection. [0003] The multi-component sensor array can simultaneously extract the response signals of multiple gas components (that is, components) of the mixed gas on multiple sensors, and analyze the difference by analyzing the algorithm to obtain the response of multiple gas components at the same time, by This use of cross-sensing can turn the interfering signal in a single gas sensor into a useful s...

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0004
Inventor 赵宇鑫梁文杰牟善军刘全桢孙昊田胡适
Owner CHINA PETROLEUM & CHEM CORP
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