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Gas particulate matter measuring method and device

A measurement method and particulate matter technology, applied in the field of atmospheric detection, can solve the problems of many equipment and high cost.

Active Publication Date: 2017-12-15
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

This method uses more equipment and is expensive

Method used

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  • Gas particulate matter measuring method and device
  • Gas particulate matter measuring method and device
  • Gas particulate matter measuring method and device

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] Below at first the inventive thinking of the present invention is described:

[0064] Firstly, the multi-wavelength lidar is used for measurement, and the original signal satisfying the lidar equation is obtained;

[0065] Then the laser radar equation is discretized in the distance to form a group of echo signal equations;

[0066] Then, the aerosol extinction coefficient parameterized in polynomial form is substituted into the echo signal equations; ...

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Abstract

The embodiment of the invention provides a gas particulate matter measuring method and device. The gas particulate matter measuring method comprises the following steps: measuring gas particulate matters through a laser radar to obtain radar echo signal strength; determining light extinction coefficients of a molecule and backscattering coefficients of the molecule; inputting the radar echo signal strength, the light extinction coefficients of the molecule and the backscattering coefficients of the molecule into a preset discrete laser radar equation and calculating to obtain particulate matter concentration intermediate parameters; inputting the particulate matter concentration intermediate parameters into a preset polynomial regression equation and calculating to obtain particulate matter concentration. According to the gas particulate matter measuring method and device provided by the embodiment of the invention, as the particulate matter concentration is obtained through the preset discrete laser radar equation and the preset polynomial regression equation, the large range and high precision measurement of the particulate matter concentration can be realized only through the laser radar, and a PM measuring instrument is not required to be used, so that the quantity of used instruments during measurement is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of atmospheric detection, in particular to a method and device for measuring gas particles. Background technique [0002] With the continuous deepening of China's industrialization, the problem of environmental pollution is also becoming more and more serious. PM2.5 and PM10 are two types of suspended particulate matter, because their concentration in the air directly affects people's health, so it is of great significance to realize the real-time monitoring of PM2.5 and PM10 concentration. [0003] With the advancement and development of science and technology, because aerosol lidar can measure the optical and microphysical properties of suspended particles in the air, aerosol lidar has been applied to the measurement of air pollution. In the field of lidar, the aerosol extinction coefficient is often used to characterize the degree of air pollution. Generally speaking, the larger the aerosol extinction c...

Claims

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Application Information

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IPC IPC(8): G01N15/06G01S17/95G01S7/48
CPCG01N15/06G01S7/4802G01S17/95G01N15/075Y02A90/10
Inventor 尚祥夏海云窦贤康上官明佳王冲裘家伟
Owner UNIV OF SCI & TECH OF CHINA
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