光催化材料建筑应用下NO_(x)污染物浓度自动检测方法

A method for automatic detection of NO_(x) concentration in photocatalytic materials for building applications

传统方法在NO_(x)浓度不断变化时浓度感知不灵敏,导致测定结果不准确,因此,设计一种光催化材料建筑应用下NO_(x)污染物浓度自动检测方法。首先设计实况环境检测装置,将温湿度、风力、压强等环境气象采集模块与主控制器模块连接,通过串口数据包将信息传递给终端,设计主控模块内部程序,对16位寄存器中参数进行设置;根据一氧化氮在与臭氧混合之后会产生化学发光的原理,得知发光强度与一氧化氮浓度之间的关系,利用光子计数器准确完成计数,利用统计的光子数来描述光强,进而转换成NO_(x)污染物的浓度。经过对比实验结果表明,设计方法得到检测结果数据的标准不确定度较小,说明数据的分散性小,可靠程度更高,验证了设计方法的有效性。

The traditional method is not sensitive to the concentration perception when the concentration of NO_(x)is constantly changing,which leads to the inaccuracy of the measurement results.Therefore,an automatic detection method of NO_(x)pollutant concentration under the application of photocatalytic materials for construction is designed.Firstly,a real environment detection device was designed to connect the temperature and humidity,wind power,pressure and other environmental meteorological acquisition module with the main controller module.The information was transmitted to the terminal through the serial port data packet.The internal program of the main control module was designed to set the parameters in the 16-bit register.According to the principle that nitric oxide will produce chemiluminescence after mixing with ozone,the relationship between luminous intensity and nitric oxide concentration is learned.The photon counter is used to accurately complete the counting,and the statistical photon number is used to describe the light intensity,which is then converted into the concentration of NO_(x)pollutant.The comparative experimental results show that the standard uncertainty of the test results obtained by the design method is small,indicating that the dispersion of the data is small and the reliability is higher,which verifies the effectiveness of the design method.