Optical scattering sensor structure

Abstract

The invention discloses an optical scattering sensor structure, and relates to the field of optical detection instruments. The optical scattering sensor structure comprises a light source fixing cavity, a mirror body fixing cavity and a main body, and a photosensitive cavity matched with the mirror body fixing cavity is arranged in the main body; a forward light beam cavity is connected in the lens body fixing cavity, and one end, far away from the lens body fixing cavity, of the forward light beam cavity is connected with a collimating lens; a circuit mainboard is inserted into the upper surface of the main body, and the top of the main body is connected with a photoelectric converter body; a backward light beam cavity corresponding to the forward light beam cavity is further formed in the main body, and an extinction trap is arranged on the outer wall of the bottom of the main body; and a concave reflecting mirror is also arranged at the bottom of the main body. According to the invention, the angle of the light scattering sensor is adjusted, so that the specific distribution of particulate matters, especially large-particle components, can be identified more accurately, the number and particle size distribution of dust particles can be identified more accurately, and the concentration of particulate matters can be calculated accurately.

Description

technical field [0001] The invention relates to the technical field of optical detection instruments, in particular to an optical scattering sensor structure. Background technique [0002] The online dust meter is suitable for the rapid determination of the concentration of inhalable particulate matter in the atmospheric environment, the detection of dust concentration in industrial and mining production sites and other labor hygiene aspects, and the monitoring of the concentration of inhalable dust in the field of environmental protection; it has been widely used in construction sites, industrial and mining Real-time monitoring of dust concentration in public places such as enterprises, storage yards and wharves, to observe the continuous change of atmospheric dust concentration more quickly and directly, and also effectively improve work efficiency. It can be used indoors and outdoors. [0003] At present, the existing technology has the following shortcomings. First, the ...

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Problems solved by technology

[0003] At present, the existing technology has the following shortcomings. First, the existing technology uses 90° right-angle scattering, which cannot effectively distinguish the size of dust particles in the air; second, the fan-type light scattering has an unreasonable structure and can only identify small particles. Particle size dust particles; third, the technical efficiency of the above large particles is low, and the distribution of dust particles cannot be effectively resolved. In view of the deficiencies of existing devices, the present invention designs an optical scattering sensor structure

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