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Portable nano-particle counter based on dynamic light scattering method

A particle and scattered light technology, which is applied in particle suspension analysis, scientific instruments, measuring devices, etc., to achieve accurate measurement results, stable optical power, and improved accuracy

Inactive Publication Date: 2014-03-12
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems in the prior art, the object of the present invention is to provide a portable nanoparticle counter based on dynamic light scattering method, which can detect and count particles with a particle diameter below 1 micron in the airflow more quickly and accurately, ensuring The detection efficiency and the accuracy of data processing can identify the pollution source. It can successfully identify the migration of harmful gases and the leakage of some office facilities and workshops with pollution problems. It is also suitable for detection in mobile and fixed places.

Method used

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  • Portable nano-particle counter based on dynamic light scattering method
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Embodiment Construction

[0080] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not intended to limit the present invention.

[0081] The present invention is a kind of portable nano particle counting instrument based on dynamic light scattering method, such as Figure 1 to Figure 8 As shown, it includes a casing 1, an optical path-air path assembly 2, a photoelectric conversion circuit board 3, a control circuit board 4, an airflow sensor 5, a micro air pump 6, a battery pack 7, and a display assembly 8.

[0082] Such as Figure 1-2 As shown, the shell 1 is a cuboid with a slope added on the basis, so that the liquid crystal display 101 is inclined to face the user, making the human-computer interaction more comfortable and convenient; the upper part of the shell 1 is provided with a handle 102, which is convenient for the operator to hold; the shell 1 The upper and lower parts of the housing 1 are fastened and ...

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Abstract

The invention provides a portable nano-particle counter based on a dynamic light scattering method, which detects and counts particles with particle sizes less than 1 micrometre in an air flow more quickly and accurately, ensures the detection efficiency and data processing accuracy, and therefore identifies pollution sources. The portable nano-particle counter can successfully identify harmful gas migration, and leakage problems of some office facilities, workshops and the like with pollution problems, and is applicable to detection of movable and fixed locations.

Description

technical field [0001] The invention relates to a portable nano particle counting instrument based on a dynamic light scattering method. The device is suitable for various working conditions and environments, and can detect gas samples in real time, analyze and process data and display and store data. Background technique [0002] Particles refer to solids, liquids (oil droplets), gases (bubbles) or molecular clusters suspended in air and liquids. Particles and their formations are ubiquitous in nature and production processes as raw materials, intermediates or products. Or the performance and quality of materials, energy consumption, environmental quality, people's health, global weather and crop growth, etc. have a major impact. For example, dust in the atmosphere, fly ash and dust emitted by industry, etc. are all particle problems; in industrial production, powder particles are used as raw materials or intermediates such as ceramics, electronic materials, catalysts, etc....

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 张融唐仕川徐江平张斌赵璟琨沈臻霖
Owner BEIHANG UNIV
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