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An atmospheric particle refers to particles with extremely small particle sizes, which is one of the most important factors affecting the climate and the environment in which human beings live. Industrial production and human activities are the main reasons for the increase in the concentration of atmospheric particles caused by the pollution of the atmospheric environment. The use of coal in China's energy consumption exceeds 70%. As the main energy source in China, the air pollution caused...

To verify the advantages of the proposed system detector in terms of efficiency, accuracy and comprehensive error of sensors, a simulation comparison experiment was carried out, and a comprehensive comparison was made between the intelligent sensors and the traditional sensor based on electrochemical methods and weighing methods. First, based on the three designs, 10 groups of comparative experiments were carried out under different degrees of air pollution, and the detection efficiency of various...

With the progress of industrialization, the scale of heavily polluting industries such as petroleum, chemical industry, electric power, and metallurgy continues to expand, and the related sewage treatment doesn’t meet the standard, resulting in an intensified trend of overall air pollution. Heating in winter in northern regions and the rapidly increasing number of motor vehicles has caused an increase in the concentration of particulate matter in the atmosphere. PM2.5 is fine particulate matter...

According to the standards of the Ministry of Environmental Protection of the People's Republic of China, all factories that produce fodder, cement, flour, wood and others need to use laser dust sensors. A dust sensor, as the name suggests, is an instrument for detecting the concentration of dust. It can be classified into PM2.5 sensors, PM10 sensors and TSP full dust sensors according to different sizes of dust.   Because the laser dust sensor can monitor the dust concentration in the...

Working underground in coal mines is dangerous, and there is a certain amount of productive dust in it. If it cannot be detected and treated in time, there may be different degrees of health hazards. The main rapid detection methods for dust are light scattering, β-ray, micro-weight balance, electrostatic induction and piezoelectric balance. Among them, the instrument of micro-weight balance is monopolized by a few American companies, with high prices and high maintenance costs; the instrument...

Infrared dust sensors Infrared LEDs are light-emitting diodes whose emission wavelengths are in the infrared range. The common wavelengths are generally around 850nm to 940nm. They are widely used in medical, security, communication, remote control and sensing fields. Since the emitting wavelength of infrared LED is outside the visible spectrum, with the receiver of a specific spectrum, the influence of ambient light on the received signal can be greatly reduced. Thanks to the continuous maturity...

Sensors With the improvement of living standards, people are paying more and more attention to the quality of air, especially now that winter is approaching; there are more and more hazy days. As the main composition of smog, PM2.5 has attracted much attention, and detection equipment for PM2.5 in the air is also emerging one after another. In the current field of detecting dust particles PM2.5, there are mainly two kinds of dust sensors, that is infrared PM2.5 sensors and laser dust sensors.  ...

The dust sensor is mainly used to detect dust concentration in the environment. At present, people have higher and higher requirements for living, working and living environment, and the harm of productive dust to the human body is becoming more and more prominent. The working principle is mainly light absorption, light scattering, β-ray, microcomputer laser and AC electrostatic induction; it is mainly suitable for various research institutions, meteorology, public health, industrial labor...

Environmental issues have always been a hot topic. Environmental protection issues are extremely urgent due to various factors. However, what we are going to discuss today is not environmental protection, but a common pollutant in life, that is PM10. ​​ The dangers of PM10 PM10 is the inhalable particle with a particle size between 2.5 microns and 10 microns that can enter the upper respiratory tract, but some particles can be excreted through sputum, and will also be blocked by the vibrissa in...