Light scattering-based particulate matter concentration detection device

The invention discloses a light scattering-based particulate matter concentration detection device. The light scattering-based particulate matter concentration detection device comprises a particulate matter sampling and cutting device, a scattered light intensity detector, a circuit board, and a display device; the particulate matter sampling and cutting device is connected with the scattered light intensity detector; cut diameter of the particulate matter sampling and cutting device is 2.5+/-0.2m, and collection efficiency geometric standard deviation is 1.2+/-0.1m; the circuit board is provided with a data processing module, and a mass concentration conversion coefficient externally arranged interface; the data processing module is connected with the scattered light intensity detector; the mass concentration conversion coefficient externally arranged interface is connected with the data processing module; and the display device is connected with the data processing module. The light scattering-based particulate matter concentration detection device is convenient for people to obtain PM2.5 concentration at a certain time timely, and is capable of providing convenience for air quality PM2.5 index real-time monitoring, and air pollution degree evaluation of certain areas, and providing favorable conditions for active treatment of PM2.5 pollution.