Detection machine for identifying mask types by utilizing capacitance change

Abstract

The invention relates to the technical field of mask detection, and provides a detection machine for identifying mask types by utilizing capacitance change, which comprises a machine body, a pipelineis fixedly connected to the inner wall of the bottom of the machine body, a glass cover is fixedly connected to the top of the pipeline, a rotating shaft is movably connected to the inner wall of theglass cover, and a torque spring is elastically connected to the outer wall of the rotating shaft; and the outer wall of the rotating shaft is fixedly connected with a valve, and the left and right inner walls of the glass cover are fixedly connected with capacitor plates. According to the detection machine for identifying mask types by utilizing capacitance change, the mask is placed at the top of the glass cover through the machine, an outlet in the top of the glass cover is blocked by the mask, the filterability of the mask is different, the variable quantity of particles in unit time is different, the particles enter between the two capacitance plates through the mask, the current is increased, and the current enters the direct-current voltage stabilizer through a wire; the direct-current voltage stabilizer stabilizes the voltage so as to supply the voltage to the driving mechanism, the rotating speed of the driving mechanism is changed accordingly, and the mask type is judged through capacitance change.

Description

technical field [0001] The invention relates to the technical field of mask detection, in particular to a detection machine for identifying the type of masks by using capacitance changes. Background technique [0002] Non-woven masks are a kind of sanitary products worn on the mouth and nose to filter the air. The air permeability and filtering effect of woven masks, the air permeability of non-woven masks produced by non-woven fabrics of different materials are different. [0003] In the existing technology, the types of masks tested by the detection agency are different each time. Before the detection, it is necessary to identify which type of mask it is. It cannot automatically identify which type of mask it is. The detection standards of masks are different. If different masks are measured by the same standard, the detection results will be wrong. After identification, the test machine needs to be adjusted to the corresponding mode. Contents of the invention [0004]...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the types of masks tested by the detection agency are different each time. Before the detection, it is necessary to identify which type of mask it is. It cannot automatically identify which type of mask it is. The detection standards of masks are different. If different masks are measured by the same standard, the detection results will be wrong. After identification, the test machine needs to be adjusted to the corresponding mode.

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