Dust detection device and dust detection method

Abstract

The invention relates to a dust detection device and a dust detection method. The dust detection device comprises a light-emitting component, a detection channel, a light interception component and a control circuit, wherein the light-emitting component emits detecting light; the detection channel is arranged on a light path of the detecting light and used for enabling the detecting light to illuminate suspended dust entering the detection channel from a convection air vent of the detection channel; the optical axis of the light interception component and the optical axis of the light-emitting component form a preset angle, and the light interception component is used for receiving scatter light, being in a preset angle with the optical axis of the light-emitting component, scattered by the detecting light through the suspended dust, and generating corresponding electrical signals according to optical signals of the scatter light; the control circuit is connected with the light-emitting component and the light interception component and used for driving the light-emitting component, receiving the electrical signals sent by the light interception component, and calculating the concentration of dust in the detection channel according to the electrical signals. The dust detection device has the advantages of small size, low power consumption, low cost, good application convenience and high detection precision.

Description

technical field [0001] The invention relates to a sensor technology, in particular to a dust detection device and a dust detection method. Background technique [0002] With the continuous development of the economy and the continuous improvement of living standards, environmental pollution has become more and more serious. The concentration of suspended dust in the air has increased significantly, and the frequency of smog weather has also increased. Among them, PM2.5 (tiny particles with a diameter less than 2.5um) is closely related to human health, directly leading to a sharp increase in the incidence of various respiratory diseases. In view of the continuous deterioration of air quality, air purification technology and air purification products have developed rapidly, and at the same time people are paying more and more attention to the value of PM2.5, which requires a high-precision dust detection device to intuitively reflect The concentration of dust in the air to d...

AI Technical Summary

Problems solved by technology

This kind of dust detection device has high detection accuracy and can distinguish the concentration of particles with different diameters, but the cost is too high, it is limited to special measuring equipment, and is not suitable for large-scale civilian use

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