Calibration method and system based on miniature air quality monitoring instrument

A monitoring instrument and air quality technology, applied in the field of calibration methods and systems based on miniature air quality monitoring instruments, can solve problems such as data deviation, and achieve the effects of reducing data delay, simple method and improving accuracy

Active Publication Date: 2020-06-23
沈阳沃尔鑫环保科技有限公司
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Problems solved by technology

[0004] In order to reduce the data deviation problem caused by the physical characteristics of ordinary sensors, the present invention provides a calibration method based on micro-air quality monitoring instruments, which can improve the accuracy of micro-monitoring instruments to a certain extent. The data deviation problem caused by its own physical characteristics makes a certain reference value

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  • Calibration method and system based on miniature air quality monitoring instrument

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0050] Such as figure 1 Shown, a kind of calibration method based on miniature air quality monitoring instrument, comprises the following steps:

[0051] (1) Factory calibration: within the set range of the monitoring instrument, the measured concentration C is linearly correlated with the electrical signal value x, and the slope k and intercept b are obtained;

[0052] (2) Factory consistency inspection test: place n monitoring instruments near the standard station, within the same concentration space, detect the concentration for 5 days, and obtain M data pairs of measured concentration C and electrical signal value x Above, carry out unary linear regression analysis to obtain factory linear equation C=k i x+b i , i=1,2...n, and then get the slope k of the i-th monitoring instrument i and intercept b i ;

[0053] (3) Acquisition of par...

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Abstract

The invention relates to the field of air quality monitoring, and particularly relates to a calibration method and system based on a miniature air quality monitoring instrument. The method comprises the following steps: carrying out delivery calibration, in a set range of the monitoring instrument, when a measured concentration C and an electric signal value x are in linear correlation, acquiringa slope k and an intercept b; inspecting and testing delivery consistency: placing the n monitoring instruments near a standard station, in a space range with the same concentration, obtaining a datapair of the measured concentration C and the electric signal value x, and performing unary linear regression analysis on the data pair to obtain a delivery linear equation; acquiring a parameter value: acquiring a correction coefficient between the monitoring instruments; and carrying out field intelligent calibration: placing the reference monitoring instrument near the standard station of a to-be-detected area, generating calibration parameters, calculating data of each monitoring instrument according to a linear equation of the corrected parameters to obtain a result, and re-establishing alinear relationship between the electric signal and the detected concentration. The method is simple, programming is convenient, self-learning is supported, and a calculation speed is high.

Description

technical field [0001] The invention relates to the field of air quality monitoring, in particular to a calibration method and system based on miniature air quality monitoring instruments. Background technique [0002] The problem of air environment is not just a single problem, but is closely related to all aspects of society. Through the use of micro-monitoring instruments, on the one hand, it can save manpower and material resources to realize real-time monitoring of the air environment; on the other hand, it can further improve the air environment and human living environment, and further strengthen the construction of the ecological environment. [0003] This kind of micro-monitoring instrument realizes speaking with data and speaking with facts. However, the core of the technology lies in the combination of sensor technology, artificial intelligence technology, etc. Accurate and real-time monitoring of six air pollutants. The micro-monitoring instruments are deploye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N15/06
CPCG01N33/0006G01N15/06G01N2015/0693
Inventor 张颖
Owner 沈阳沃尔鑫环保科技有限公司
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