气溶胶质量浓度测量系统的设计与实现  

The Design and Implementation of the Aerosol Mass Concentration Measurement System

作　　者：沈雷[1,2,3] 顾芳 张加宏[1,2,3] 冒晓莉[2,3] 刘毅[2,3] SHEN Lei1,2,4 GU Fang3, ZHANG Jianong 1,2,4 , MAO Xiaoli2,4 LIU Yi2,4(1.Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology,Nanjing University of Information Science and Technology,Nanjing 210044, China ;2.Jiangsu Key Laboratory of Meteorological Observation and Signal Processing ,Nanjing University of Information Science and Technology, Nanjing 210044, China ; 3. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology , Nanjing 210044, China ; 4.School of Electronic and Information Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, Chin)

机构地区：[1]南京信息工程大学江苏省大气环境与装备技术协同创新中心,南京210044 [2]南京信息工程大学江苏省气象探测与信息处理重点实验室,南京210044 [3]南京信息工程大学电子与信息工程学院,南京210044 [4]南京信息工程大学物理与光电工程学院,南京210044

出　　处：《电子器件》2017年第5期1244-1249,共6页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61307113;61306138;41605120);江苏省自然科学基金项目(BK2012460);江苏省高等学校大学生实践创新训练计划项目(201510300034);江苏高校品牌专业建设工程项目(TAPP)

摘　　要：为监测近地面气溶胶颗粒,设计了基于单粒子光散射法的气溶胶质量浓度测量系统。通过高速AD9656转换器与FPGA多通道采集卡对前端光学传感器输出信号进行采集,并由STM32微控制器结合分形反演模型完成气溶胶质量浓度的测定,测量结果通过无线模块传输至云端。实验表明:对于烟尘和空气样品,分形模型反演的质量浓度值与标准值吻合较好,拟合直线斜率分别为0.962 57和0.906 38,相关系数均高于0.99,表明提出的气溶胶质量浓度测量系统具有一定的实用价值。In order to detect near-surface aerosol particles,an aerosol mass concentration measurement system based on single-particle light scattering method was designed. The high-speed AD9656 converter and FPGA multi-channel acquisition circuit were used to collect the output signal of the front optical sensor. The STM32 micro-controller combing with the aerosol concentration fractal inversion model was applied to calculate the aerosol mass concentration. The measurement result was transmitted by wireless module to the cloud service platform. The experimental results show that the mass concentration values obtained by the fractal inversion model are in agreement with the standard values for smoke and air samples,and the fitting slope is 0. 962 57 and 0. 906 38,respectively,and the correlation coefficients are higher than 0.99,which indicates that the proposed aerosol mass concentration measurement system has a certain practical value.

关 键 词：气溶胶质量浓度 光散射 高速AD转换器 多通道信号采集电路 信号幅度分布 

分 类 号：TN247[电子电信—物理电子学] TN911.7