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Application of PM2.5 sensor in air pollution detection and monitoring

Update: 2020-05-15 14:03 Source: LUFTMY Reading: ↻ News

Among all kinds of air pollutants, particulate matter is the most closely related to human health.The study found that for every 10g/m3 increase in PM2.5 concentration, the total acute mortality rate of the population increased by 0.40%, and the mortality rates of respiratory diseases and cardiovascular diseases increased by 1.43% and 0.53% respectively, indicating that particulate pollution has a significant impact on the health of susceptible groups (such as patients with respiratory diseases and cardiovascular diseases).

Application of PM2.5 sensor in air pollution detection and monitoring

Based on this, accurate detection of PM2.5 is also becoming more and more important.There are usually three ways to measure the concentration of PM2.5: quantity concentration, mass concentration and settlement intensity.Among them, the mass concentration of particulate matter is the most widely used in the study of atmospheric particulate matter.Through the statistical analysis of the retrieval results, it is found that the current detection methods of fine particulate matter in the atmosphere mainly include weighing method, light scattering method, oscillating balance method, and ecstasy ray absorption method.However, with the development of science and technology, many indoor places will use air purifiers to purify the air in order to strengthen prevention and control. Pm2.5 sensor module is an indispensable component, which is used to detect the current pm2.5 concentration and feedback it to the air purifier in time.

LD13 Laser PM2.5 Dust Sensor Model
LD13 Laser PM2.5 Dust Sensor Model

The pm2.5 sensor can be used to detect the concentration of dust in the air around us, or the size of pm2.5, based on the light-scattering principle: particles and molecules will scatter light under the irradiation of light, while absorbing some of the energy of the light.When a beam of parallel monochromatic light is incident on the field of particles to be measured, it is affected by the scattering and absorption around the particles, and the light intensity decays.Luftmy LD13 Michael provide laser particle sensor module PM2.5 sensors detect 0.1 ~ 10 ㎛ particles, such as indoor dust, pollen, microorganisms, such as dust mites and cigarette smoke particle concentration.

Main features of LD13 laser PM2.5 sensor module

◆ precise measurement is realized by combining laser mi-mie spherical scattering principle with lovemay space measurement patent;

◆ zero error alarm rate;

◆ real-time response and support for continuous collection;

◆ the minimum resolution particle size is 0.1m;

◆ the service life of electronic control devices is ≥ 8 years, and the average trouble-free working time is ≥ 5 years;

Shell shielding combined with software anti-interference algorithm, the anti-interference performance is stronger;

◆ wide range of application, no need for air duct design, compatible with multi-protocol output;

◆ multi-interface design, suitable for air purifier, fresh air system, etc.

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