Air detection device for preventing lens pollution and anti-pollution method thereof

Abstract

The invention relates to an air detection device for preventing lens pollution and an anti-pollution method thereof. The device comprises a polarization device and a dust sensor, the polarization device and the dust sensor are communicated with each other to form a detection channel for air circulation, and the dust sensor comprises a built-in light source, a detection lens and a photoelectric sensor. The detection lens is composed of a first detection lens and a second detection lens, and the first detection lens and the second detection lens are symmetrically arranged in the dust sensor in aV shape and are both polarized in an electret mode to have the same polarity. The beneficial effects of the present invention are that the detection lenses on the traditional dust sensor are polarized in the electret mode to have the same polarity, and the polarization device polarizes the air to be detected, so that the air dust carries the charges with the same polarity as the electret detection lenses, the dust cannot be adhered to the detection lenses, and the anti-pollution effect of the lenses is achieved.

Description

technical field [0001] The invention relates to the technical field of air detection equipment, in particular to an air detection device and an anti-pollution method thereof capable of preventing lens pollution from causing detection function degradation or failure due to dust accumulation on the detection head. Background technique [0002] The main function of the existing dust sensor is to monitor the concentration of dust particles in the air. However, during the monitoring process, the sensor lens will be polluted and accumulated dust. When the dust accumulates to a certain extent, it will affect the sensitivity of the dust sensor and make the overall detection The effect is reduced, resulting in a serious decline in the accuracy of the detection results. However, most of the current cleaning methods for dust sensors are manual cleaning after dust accumulation, such as using a brush to scrub it or using a blower to blow away the accumulated dust on the surface, etc. How...

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Problems solved by technology

[0002] The main function of the existing dust sensor is to monitor the concentration of dust particles in the air. However, during the monitoring process, the sensor lens will be polluted and accumulated dust. When the dust accumulates to a certain extent, it will affect the sensitivity of the dust sensor and make the overall detection The effect is reduced, resulting in a serious decline in the accuracy of the detection results. However, most of the current cleaning methods for dust sensors are manual cleaning after dust accumulation, such as using a brush to scrub it or using a blower to blow away the accumulated dust on the surface, etc. However, these cleaning methods cannot effectively remove the dust accumulated in the detection head of the dust sensor, and cannot fundamentally eliminate the problem of dust accumulation on the lens of the dust sensor, and it needs to be cleaned and maintained after a period of use, which is very uncomfortable to use Convenient, the dust accumulated on the detection head during each cleaning will gradually lead to the decline of the detection ability of the detection device

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