Dust concentration measuring device based on polarization light

A dust concentration, measuring device technology, applied in the direction of measuring devices, suspension and porous material analysis, particle suspension analysis, etc.

Inactive Publication Date: 2019-06-14
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a dust concentration measuring device based on polarized light aiming at the deficiencies of various devices used for measuring dust concentration at present.

Method used

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  • Dust concentration measuring device based on polarization light
  • Dust concentration measuring device based on polarization light

Examples

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Embodiment 1

[0013] Example 1, such as figure 1 Or as shown in 2, is a dust concentration measurement device based on polarized light, including: dust flow channel 4, hollow transparent sphere 1 formed in the enlarged part of dust flow channel 4, in fact, dust flow channel 4 and hollow The transparent sphere 1 is a glass tube or a transparent plastic tube with a hollow transparent sphere 1 with an enlarged part in the middle.

[0014] The laser 3 of the light-transmitting sphere 1, the first lens 14, the first polarizer 15, and the first quarter-wave plate 16 are arranged between the laser 3 and the hollow transparent sphere 1. In this way, the laser output from the laser 3 After passing through the first lens 14, the first polarizer 15, and the first quarter-wave plate 16, circularly polarized light is formed, which is irradiated on the gas of the dust concentration to be measured that is flowing through the hollow transparent sphere 1 at a uniform speed. The light will be scattered on the s...

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Abstract

The invention discloses a dust concentration measuring device based on polarization light. The dust concentration measuring device includes a channel with dust flowing, a hollow transparency sphere, alaser device, a first lens, a first polarizer, a quarter-wave plate, an optical fiber fixing frame, a camera, a second quarter-wave plate, a second polarizer, and a second lens; wherein the hollow transparency sphere is formed by the expanding part in the channel with dust flowing, rays of the laser device directly glare the transparency sphere, and the first lens, the first polarizer and the quarter-wave plate are arranged between the laser device and the hollow transparency sphere; an optical fiber opening of optical fiber is densely formed in the spherical surface of the hollow transparency sphere, and the optical fiber fixing frame is at the other end of the optical fiber and ties the optical fiber neatly; and the camera is arranged in front of the optical fiber fixing frame, and thesecond quarter-wave plate, the second polarizer and the second lens are arranged between the optical fiber fixing frame and the a camera lens. According to the dust concentration measuring device based on the polarization light, a light scattering theory is used, a polarization light imaging method can provide more abundant sample structure information than a non-polarization optics method and isvery sensitive to sub-wavelength micro structure changes, and thus the measuring method of the structure is accurate.

Description

Technical field [0001] The invention relates to the field of detecting dust concentration, in particular to a measuring device based on polarized light dust concentration. Background technique [0002] With the rapid development of modern technology, many powder substances in industrial production are usually ignored by people and cause many tragedies, such as dust pollution and dust explosions. Workers exposed to dust are prone to lung cancer, nasopharyngeal, laryngitis, asthma and other respiratory diseases. At the same time, fine dust is likely to cause a short circuit in the circuit and cause the chip to fail. The dust adhering to the machine and accelerating friction will shorten its life. Therefore, the measurement of dust concentration is more and more important. There are several conventional measurement methods to measure the concentration of dust particles. One is the weighing method, in which a certain volume of air is drawn through a filter membrane with a constant w...

Claims

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Application Information

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IPC IPC(8): G01N15/06
Inventor 刘丹丹汤春瑞景明明沈显庆韩东志马武马权赵文帝
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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