Particle shape analyzing device based on laser holography imaging method and working mechanism of particle shape analyzing device

Abstract

The invention relates to the technical field of particle analysis and discloses a particle shape analyzing device based on a laser holography imaging method and a working mechanism of the particle shape analyzing device. The device comprises a laser, a microscope lens, a diaphragm, a transparent observation piece and an image sensor, wherein a fluid inlet and outlet hole channel is formed in the transparent observation piece. The laser holography imaging method is adopted to directly perform interference on particles in a to-be-measured fluid, holographic imaging information is produced and then is subjected to data inversion processing, space imaging information reflecting the particle shape can be obtained, so that a filter membrane is not needed, sample contamination can be avoided, measurement errors and consumable costs can be reduced, and the operating process of the device is simplified. Besides, the device has the advantages of high real-time performance, high particle resolution and wide detection object range, and actual application and popularization are facilitated.

Description

technical field [0001] The invention relates to the technical field of particle analysis, in particular to a device for analyzing particle shape based on a laser holographic imaging method and its working mechanism. Background technique [0002] At present, in order to deal with and solve the environmental pollution problems caused by industrial production and human living life, especially the serious haze problem, continuous, accurate and extensive monitoring of the characteristics of particulate matter in the atmosphere is required, such as PM2. 5 and PM10 measurement work. The existing measurement methods for the characteristics of particulate matter in the air mainly include the gravimetric method, the oscillating balance method, and the Beta ray method. Among them, the principle of the gravimetric method is to extract a quantitative volume of air at a constant speed through a sampler with a certain cutting feature, so that PM2.5 and PM10 in the ambient air are trapped ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of large measurement errors, high cost of consumables, frequent calibration of instruments and complicated operation in the above-mentioned existing methods, the present invention provides a device for analyzing particle shape based on laser holographic imaging and its working mechanism, which can be used The laser holographic imaging method directly performs the holographic imaging information generated by the interference of the particles in the fluid to be tested, and then performs data inversion processing on the holographic imaging information to obtain the spatial imaging information reflecting the particle shape, thus eliminating the need to use a filter membrane , to avoid sample contamination, thereby reducing measurement errors and consumable costs, and simplifying the operation of the equipment

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