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Application of PM2.5 sensor technology in air quality monitoring

Update: 2020-06-11 15:01 Source: LUFTMY

In recent years, a large number of automobile exhaust emissions and the increasing concentration of PM2.5 in cities have seriously affected people's physical and mental health.In order to strengthen the prevention and control, on the one hand, some cities have limited number of travel policies, on the other hand, relevant departments use PM2.5 sensors to monitor the ambient air, real-time air quality changes to take measures.

Application of PM2.5 sensor technology in air quality monitoring

Shanghai taxis have been monitoring the city's air quality with PM2.5 sensors since last year, the first time the city has installed on-board air quality monitors in taxis in China, media reported.Using liquid taxi to PM2.5 data monitoring, due to similar to pedestrians breathing scope, especially for a particular area, such as construction, residential areas, etc., can obtain higher density data to reflect the local air quality situation, and fixed stations provide an effective, effectively complement each other, it is understood the device consists of two sampling mouth, PM2.5 sensor, PM10 sensor, GPS module and so on, mainly for two air PM2.5 and PM10 suspended solids for real-time monitoring, every second is data transmission to the background.The vehicle-mounted air quality monitor is hidden in a light box in a taxi's overhead light.The corresponding data have also been connected with the environmental protection department and studied by professional organizations.

For PM2.5 sensor technology in the application of air quality monitoring is the most typical case of Beijing area, with the help of the Internet of things in Beijing since 2015 and formed a new generation of high density sensor technology innovation in air quality monitoring network, the monitoring network through large-scale layout in Beijing more than 1300 low cost, miniaturization, high density of PM2.5 sensor monitoring points.The operation and maintenance personnel only need to click on the operation and maintenance management interface of the software in the computer room of the monitoring center to see the operation status of all sensor monitoring points in the city.Based on data analysis, room through calculating the data of sensors of return, which can identify specific period of time, which are hot grid pollution is relatively serious, can check at the same time, determine whether there is a sensor work abnormal, and according to the instruction system, law enforcement and earthly according to grid monitoring data to carry out accurate law enforcement and governance, law enforcement data accuracy can reach 80% and targeted and timely inspection, maintenance.Combined with mobile APP, the effective management of each sensor and point can be easily completed.

However, although there have been a lot of sensor devices to detect PM2.5 concentration on the market, they can only meet the daily self-testing needs of the public, lacking uniform standards and poor consistency of product quality, which is far from the requirements of monitoring work.In response, the center's engineers started by developing affordable and compliant PM2.5 sensors.

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

LUFTMY provide PM2.5 level of civil laser type sensor, is to use the principle of light scattering dust particles in the air for testing of small module, can accurately detect the specific PM1.0, PM2.5 and PM10 numerical, UART and PWM output, has small volume, high precision, good repeatability, consistency, real-time response can be continuous acquisition, strong anti-interference ability, adopt the ultra-quiet fan, sensor testing and calibration, 100% are suitable for all kinds of the need for PM value testing occasions.

TAGPM2.5 sensor application PM2.5 sensor technology air quality monitoring