With the development of the national economy and the improvement of people's living standards, the quality of the air environment has attracted great attention. In recent years, particulate matter, as one of the important air pollutants, has received much attention. Existing studies have shown that the increase in the incidence of lung and cardiovascular diseases is related to the increase in particulate matter concentration. On average, for every 10% increase in inhalable particulate matter (PM10) in the air, lung function decreases by 1%, and the risk of developing various respiratory diseases such as cough and asthma increases by 10%. Therefore, particulate matter monitoring is very important.
Particulate matter monitoring
Currently, the industry typically uses optical dust sensors to measure particulate matter size and mass concentration. Compared to infrared LEDs, laser-based dust sensors are more widely used in air purifiers, air quality monitors, fresh air systems, and HVAC systems due to their superior mass sensing capabilities, enabling real-time monitoring of indoor particulate matter concentration. However, research has found that in the absence of significant indoor pollution sources, outdoor air contributes 76% and 66% to indoor PM2.5 and PM10 levels, respectively. Therefore, simply monitoring and purifying indoor particulate matter is far from sufficient; controlling outdoor particulate matter is equally important.
Outdoor particulate matter grid monitoring
The key to controlling outdoor particulate matter is identifying the sources of particulate matter pollution. Implementing grid-based management in various urban areas (including construction sites, roads, large commercial districts, industrial parks, and residential areas) has become the main measure for controlling outdoor particulate matter. Grid-based management adopts a large-scale, high-density deployment method, using grid-based monitoring equipment to monitor changes in particulate matter concentration at each location in real time, and promptly sending monitoring data to the system platform. Environmental protection departments can accurately understand the sources of particulate matter pollution and the environmental indicators of the monitored sites.
In grid-based monitoring, the demand for dust sensors is enormous. The "Technical Guidelines for Grid-based Monitoring of PM2.5 (Trial)" and the "Technical Requirements and Testing Methods for Grid-based Monitoring Systems for Air Pollution Prevention and Control" issued by Hebei Province indicate that grid-based monitoring equipment should employ the light scattering method for continuous and automatic monitoring of particulate matter pollution in ambient air. The guidelines also specify the concentration measurement range, measurement accuracy, and operating temperature and humidity, as detailed in the table below.
Outdoor laser dust sensors have emerged.
In practical applications, it has been found that traditional indoor laser dust sensors have poor measurement accuracy for PM10, failing to meet the requirements of grid-based monitoring applications. To address this, the high-precision Japanese Figaro TF-LP01 laser particulate matter sensor for PM2.5 can be used. The TF-LP01 is a small module that uses the scattering principle to detect dust particles in the air. It is small in size, easier to install, highly accurate, and provides more precise detection results. It also features real-time response, continuous data acquisition, strong anti-interference capabilities, an ultra-quiet fan, and 100% factory testing and calibration.
Specifications of the Japanese Figaro TF-LP01 laser particulate matter sensor PM2.5 sensor:
High precision, small product differences
In outdoor particulate matter grid-based monitoring, the measurement accuracy and consistency of outdoor laser dust sensors are crucial. Poor sensor accuracy or inconsistent sensor quality will directly lead to inaccurate particulate matter measurement data output by the grid-based monitoring equipment, affecting subsequent comprehensive management.
Conclusion
Particulate matter pollution is a significant factor affecting air quality indicators and human health in my country, making indoor monitoring and purification as important as outdoor pollution control. Laser particulate matter sensors can be used in grid-based atmospheric environmental management to monitor particulate matter, helping to achieve truly regional collaborative control and comprehensive management of pollution sources, thus enabling scientific, law-based, and comprehensive governance.
