相对湿度对经济型激光散射法PM2.5传感器准确性的影响

With the improvement of living standards, people\'s requirements for indoor air quality continue to increase, so the application of indoor PM2.5 monitoring sensors in residential and office buildings is also increasing. However, in practical applications, the detection results of indoor PM2.5 sensors are usually affected by the temperature and humidity of the indoor air, resulting in a decrease in accuracy. Due to cost constraints, expensive industrial-grade and laboratory-grade sensors are unlikely to be used in residential office buildings. Therefore, on the basis of minimizing development ,operation and maintenance costs, it has important significance to improve the accuracy of low-cost laser scattering particle sensors. Experimental research was performed in an artificial climate chamber.The effect of different temperature and humidity on the accuracy of the sensor was studied. In this study, a regression model was used to establish a regression model, and a method for rapid calibration of low-cost sensors by using a portable high-precision measuring instrument was proposed.