Test: We can simply see the principle of air purification as three steps: detection, purification, and release. The air purifier detects pollutants in the room, filters them, and then discharges clean air. Only when these three steps cooperate well can the air purifier exert its maximum effectiveness.

How the air purifier quickly senses changes in indoor air quality, feeds back to the user, and carries out gear changes can undoubtedly clean the air more effectively and save energy and prolong life.

You, who are smart, must have discovered the key to the problem, which is that discovering pollutants is a switch for the air purifier to start working. The air purifier discovers pollutants through the "eyes" installed inside the product. This eye refers to the dust sensor.

Using the principle of light scattering, a high-quality infrared diode is used as the light source. The photoelectric detector receives the scattered light and converts it into an electrical signal. Through precise filter amplification circuit processing and CPU algorithm conversion, analog and digital signals are output.

Directly output the PWM signal, the PWM width is the current concentration value (1ms = 1ug/m3). The dust concentration value (unit ug/m3) can also be output through the IIC serial port signal.

The sensor is suitable for air purifiers, household air conditioners, fresh air machines, and air quality testing instruments.

If you are interested in the HPD05 infrared pm2.5 sensor products of Luftmy Company, you can contact us at any time or leave a message on the website. We look forward to cooperating with you.

Luftmy PM2.5 infrared sensor application areas: air conditioners with purification functions, air purifiers, vehicle purification equipment, portable detectors, fresh air systems, smart detectors, etc.