室内环境污染物自动实时监测系统与标准检测方法对比研究

Comparative Study on Automatic Real-time Monitoring System and Standard Detection Methods of Indoor Environmental Pollutants

室内环境污染物自动实时监测系统是把传感器技术和物联网技术结合,用于实时监测室内空气中各种有害污染物的浓度。为研究该系统在实际应用过程中的效果,采用与标准检测方法的对比试验,选取4种参数的26组有效实验数据进行分析。结果表明,两种方法对甲醛、温度、湿度3个指标的监测结果具有较好的一致性,试验结果相对偏差均在20%以内,且三者的最小相对偏差分别为0.6%、0.5%、0.8%;但TVOC的试验结果则相差较大,数据的相对偏差未达到30%。表明该系统对甲醛、温度、湿度三种参数具有较好的监测效果,对TVOC的监测效果则不佳,有待进一步的深入研究。

The automatic real-time monitoring system for indoor environmental pollutants combines sensor technology and Internet of things technology to monitor the concentration of various harmful pollutants in indoor air in real time.In order to study the effect of the system in practical application,26 groups of effective experimental data with 4 parameters were selected for analysis by contrast test with standard detection method.The results show that the monitoring results of formaldehyde,temperature and humidity by the two methods have good consistency,and the relative deviation of the test results is within 20%,and the minimum relative deviation is 0.6%,0.5%and 0.8%respectively.However,test results of TVOC differ greatly,and the relative deviation of data does not reach 30%.The research results show that the system has good monitoring effect on formaldehyde,temperature and humidity,but poor monitoring effect on TVOC,which needs further in-depth study.