Update: 2019-08-02 17:13 Source: LUFTMY
The laser dust sensor focuses on the collection and calculation of the number of suspended particles with different particle sizes in the air per unit volume, namely the concentration distribution of particles, which is then converted into mass concentration to provide timely and accurate concentration data.
Guangzhou luftmy laser sensor adopts MIE spherical particle transparency principle, that is, laser sensor USES laser to irradiate suspended particulate matter in the air to produce light transparency Photoelectric detector collects scattering light intensity in a certain Angle range, the scattering light intensity will be linearly converted to voltage, and then sent to the data processing system, The data processing system takes the principle of Michaelis transparency theory to deal with the datas, Then the equivalent particle size and the number of particles with different particle sizes per unit volume are obtained.
Other laser sensors can be divided into solid laser sensor, gas laser sensor, liquid laser sensor and semiconductor laser sensor.
This kind of sensor has the characteristics of small components, strong, large output power, etc., the general working power can reach more than 100W, pulse madman power can reach 109W.
Gas laser sensors are widely used in the market because of their low price, simple structure, convenient operation and stable operation for a long time.
Dye laser sensors are commonly used in this kind of sensors. The output wavelength of liquid laser sensor can be adjusted continuously with wide coverage.
Semiconductor laser sensor is based on semiconductor material. Commonly used semiconductor media are laser sensors such as gallium arsenide, chromium sulfide and zinc sulfide. This kind of sensor is small in size, light in weight and long in life. Optical fiber communication also greatly promotes the development of semiconductor laser sensors.
Laser dust sensor uses laser Mie spherical scattering principle combined with Lefman space measurement patent to achieve accurate measurement, with zero error alarm rate, long service life of electrical appliances, anti-jamming performance, suitable for various detectors, air purifiers, fresh air systems and so on.