Charge induction dust concentration detection method based on active charging

A dust concentration detection and charge induction technology, used in measurement devices, suspension and porous material analysis, instruments, etc., can solve the problems of weak signal, low test accuracy of low concentration dust, limited test range, etc. effect of error
CN114544451APending Publication Date: 2022-05-27CHINA COAL TECH ENG GRP CHONGQING RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA COAL TECH ENG GRP CHONGQING RES INST
Publication Date
2022-05-27

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Abstract

The invention relates to a charge induction dust concentration detection method based on active charging, and belongs to the technical field of dust concentration detection. The method comprises the following steps: S1, performing active charging on dust particles at a charge induction front end, and constructing a charge induction dust concentration model based on active charging; s2, calculating the signal-to-noise ratios of dust induction signals of different types of dust under different charge voltages, and finding out an active charge voltage value which can meet the signal-to-noise ratio detection requirement and does not generate breakdown according to the relationship between the charge voltage of each type of dust at the lowest extractable signal-to-noise ratio and the dust concentration; and S3, adopting a test comparison method to obtain different dust detection concentration lower limit values meeting the signal-to-noise ratio requirements. According to the invention, the relative error of dust concentration detection is reduced.
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Description

technical field

[0001] The invention belongs to the technical field of dust concentration detection, and relates to a charge induction dust concentration detection method based on active charging. Background technique

[0002] At present, the mainstream method for detecting dust concentration is the charge induction method, which has the advantages of good pollution resistance and minimal maintenance workload. Scholars at home and abroad have carried out related research on this. Chen Jiange et al. reduced the error of electrostatic charge induction detection of dust concentration by improving the induction electrode; Liu Dandan et al. proposed a combined measurement pipeline structure based on Bernoulli effect and Karman vortex street effect, which solved the problem of electric charge in low dust concentration environment. The problem of low measurement accuracy of induction dust concentration; Liu Ruochen et al. obtained the three-dimensional spatial distribution law of m...

Claims

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