气溶胶质量浓度测量系统的设计与实现
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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.
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.
引文
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[14]张加宏,韦圆圆,顾芳,等.高精度光散射气溶胶质量浓度测量系统的信号处理研究[J].传感技术学报,2016,29(4):536-544.
[2]麻云鑫,王尔申,姚爱华,等.雾霾浓度监测与定位系统的研究与设计[J].电子器件,2016,39(6):1477-1481.
[3]邹丽新,季晶晶,朱桂荣,等.空气悬浮颗粒物粒径分布及质量浓度一体化测量系统的研制[J].传感技术学报,2007,20(8):1788-1792.
[4]梁艳,张增福,陈文亮,等.基于β射线法的新型PM2.5自动检测系统研究[J].传感技术学报,2014,27(10):1418-1422.
[5]Winkel A,Rubio J L,Huis in’t Veld J W H,et al.Equivalence Testing of Filter-Based,Beta-Attenuation,TEOM,and Light-Scattering Devices for Measurement of PM10 Concentration in Animal Houses[J].Journal of Aerosol Science,2015,80:11-26.
[6]G9rner P,Simon X,Bémer D,et al.Workplace Aerosol Mass Concentration Measurement Using Optical Particle Counters[J].Journal of Environmental Monitoring,2012,14(2):420-428.
[7]Peters T M,Ott D,O’shaughnessy P T.Comparison of the Grimm1.108 and 1.109 Portable Aerosol Spectrometer to the TSI 3321Aerodynamic Particle Sizer for Dry Particles[J].Annals of Occupational Hygiene,2006,50:843-850.
[8]顾芳,杨娟,卞保民,等.悬浮颗粒物信号幅度分布提取及信息熵的应用[J].仪器仪表学报,2008,29(11):2341-2345.
[9]焦佳伟,石云波,邹坤.基于FPGA和以太网的多通道数据采集系统[J].电子器件,2016,39(1):168-171.
[10]郝晓明,李杰,黄玉岗.基于ADS8568的八路数据采集系统设计[J].传感技术学报,2016,29(1):150-154.
[11]潘辉.STM32-FSMC机制的NOR Flash存储器扩展技术[J].单片机与嵌入式系统应用,2009(10):31-33.
[12]秦鸿刚,刘京科,吴迪.基于FPGA的双口RAM实现及应用[J].电子设计工程,2010,18(2):72-74.
[13]顾芳,付洋,张仙玲,等.基于STM32的空调散热片粉尘自动监测仪的设计[J].现代电子技术,2014,37(14):93-97.
[14]张加宏,韦圆圆,顾芳,等.高精度光散射气溶胶质量浓度测量系统的信号处理研究[J].传感技术学报,2016,29(4):536-544.