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Aerosol measurement system

A measurement system and aerosol technology, applied in the direction of measurement devices, material analysis through optical means, instruments, etc., can solve the problems of large uncertainty and errors, and achieve the effect of accurate acquisition and reduction of errors

Active Publication Date: 2018-10-02
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, atmospheric aerosols have great time and space variability, and the uncertainty is large. When using different techniques to measure the same object on different equipment, the results obtained will have large errors.

Method used

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Embodiment Construction

[0022] 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 some of the embodiments of the present invention, but not all of them. 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.

[0023] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0024] It should also be understood that the terminology used ...

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Abstract

The invention discloses an aerosol measurement system which comprises a light path module, a gas circuit module, a cavity body module, a photoacoustic spectrum signal processing module, a cavity ring-down signal processing module and a control module, wherein the gas circuit module conveys protective gas and gas to be detected; the cavity body module comprises two buffer cavities and a photoacoustic tank between the buffer cavities; the photoacoustic spectrum signal processing module comprises a microphone; the microphone is externally connected with an amplifier; the cavity ring-down signal processing module comprises a photoelectric detector; the photoelectric detector is externally connected with the amplifier and an acquisition card sequentially; and the control module comprises a controller for controlling an electronic element, a computer for processing an acquired signal, and a power pack. Cavity ring-down and a photoacoustic spectrum of atmosphere aerosol are measured simultaneously in a single cavity body; parameters are measured in a single body and a single background; an extinction coefficient, an absorption coefficient and a scattering coefficient of the aerosol are obtained synchronously and integrally; an error is reduced; and optical properties of the atmosphere aerosol is obtained accurately.

Description

technical field [0001] The invention relates to the technical field of gas monitoring, in particular to an aerosol measurement system. Background technique [0002] Atmospheric aerosols refer to solid or liquid particles suspended in the air. Atmospheric aerosols not only affect atmospheric radiation and climate change, but also affect military, wireless laser communication and environmental fields. Serious secondary aerosols will cause environmental pollution, so master Its chemical properties are of great significance. Using optical methods to study its characteristics is an important way to study the chemical properties of atmospheric aerosols. Simultaneously obtaining aerosol scattering coefficients, absorption coefficients, and extinction coefficients is an important means to obtain optical properties such as aerosol single scattering albedo. However, atmospheric aerosols have great time and space variability, and the uncertainty is large. When different techniques are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N21/17
CPCG01N15/00G01N21/1702G01N2021/1704
Inventor 谢品华靳华伟胡仁志李治艳凌六一陈浩王怡慧王凤阳
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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