基于STM32的光散射式扬尘在线监测仪  

Design of Online Monitor of Light Scattering Type Dust Based on STM32

作　　者：牛志云 杨义新 桂华侨[1,3] 张礁石 余同柱 程寅 NIU Zhi-yun;YANG Yi-xin;GUI Hua-qiao;ZHANG Jiao-shi;YU Tong-zhu;CHENG Yin(Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Anhui Province for Environmental Optical Monitoring Technology,Hefei 230031,China)

机构地区：[1]中国科学院安徽光学精密机械研究所,中国科学院环境光学与技术重点实验室,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026 [3]安徽省环境光学监测技术重点实验室,安徽合肥230031

出　　处：《仪表技术与传感器》2020年第1期36-41,共6页Instrument Technique and Sensor

基　　金：国家重点研发计划项目(2016YFF0103004);中国科学院科技服务网络计划区域重点项目(KFJ-SM-STS-170-01)

摘　　要：为了实现对扬尘质量浓度在线监测并且实时反馈颗粒物质量浓度值、采样流量和周围环境温湿度等信息,设计了基于STM32微控制器的光散射式扬尘监测仪。通过测量前向散射光反演颗粒物质量浓度,集成了温湿度传感器降低环境湿度干扰。仪器设计紧凑、质量轻、成本低。实验室结果表明该仪器与国外同类型仪器对比的统计相关性较高,相关系数可达到0.95以上,通过外场实验与β射线法对比,相关系数为0.78,测量误差低,可实现对扬尘准确的测量。In order to realize real-time online monitoring of dust mass concentration and real-time feedback of particle mass concentration value,sampling flow rate and ambient temperature and humidity,a light scattering dust monitor based on STM32 microcontroller was designed.By measuring the mass concentration of the forward scattered light,the temperature and humidity sensor was integrated to reduce the environmental humidity interference.The instrument was compact in design,light in weight and low in cost.The laboratory results show that the instrument has a relatively high statistical correlation with the same type of instrument abroad,and the correlation coefficient can reach above 0.95 Comparing with theβ-ray based instrument during external field experiment,the coefficient is 0.78,the measurement error was low enough to ensure high accurate measurement of dust.

关 键 词：光散射 扬尘 颗粒物 STM32 实时 在线监测 

分 类 号：X851[环境科学与工程—环境工程]