Dust concentration measuring device based on polarization light

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...

AI Technical Summary

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.

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