Non-contact measuring device and method for aerosol mass concentration field

A non-contact measurement and mass concentration technology, applied in the field of laser technology and image processing, can solve the problem of only measuring aerosol mass concentration in local areas
CN106769743AActive Publication Date: 2017-05-31BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2017-05-31

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Abstract

The invention relates to a non-contact measuring device and method for an aerosol mass concentration field and belongs to the fields of laser technologies and image processing technologies. In order to measure mass concentration distribution of aerosol in space, the non-contact measuring device and method enable a laser detecting technology and an image processing technology to be combined. The non-contact measuring method comprises the steps: firstly, utilizing corresponding relation between laser echo voltage of aerosol at the laser radiation position and a gray level image of the laser radiation position to establish empirical relationship expression between image gray level and the laser echo voltage and empirical relationship expression between the image gray level and mass concentration; inverting image gray level of the aerosol at the non-laser-radiation position according to image gray level of the non-laser-radiation position of the aerosol; accordingly obtaining aerosol mass concentration field distribution in a collecting view field of an image collecting and storing module.
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Description

technical field

[0001] The invention relates to a non-contact measuring device and method for an aerosol mass concentration field, belonging to the technical fields of laser technology and image processing. Background technique

[0002] There are sampling and non-sampling methods for measuring aerosol concentration. Sampling methods include filter weighing method, ray absorption method and piezoelectric crystal method, etc.; non-sampling methods include optical method, acoustic method and charge method, among which optical methods include image method, response spectrum method, light transmission method and light scattering method, etc. . Aerosol has the characteristics of wide spatial distribution and uneven concentration distribution. The current aerosol concentration measurement method can only measure the aerosol mass concentration in a local area, and cannot obtain the spatial distribution of the aerosol mass concentration field. Contents of the invention

[0003] T...

Claims

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