基于CCD图像的粉尘浓度面维度分布测量方法  

Surface dimension distribution measurement method of dust concentration based on CCD image

作　　者：刘丹丹 侯展博 胡丙阳 杨磊 李德文 尤嘉 Liu Dandan;Hou Zhanbo;Hu Bingyang;Yang Lei;Li Dewen;You Jia(School of Electrical&Control Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;Institute of Beijing Remote Sensing Device,Beijing 100854,China;State Grid Beijing Electric Power Company,Beijing 100031,China;China Coal Technology Engineering Group Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]黑龙江科技大学电气与控制工程学院,哈尔滨150022 [2]北京遥感设备研究所,北京100854 [3]国网北京市电力公司,北京100031 [4]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《黑龙江科技大学学报》2023年第1期99-102,共4页Journal of Heilongjiang University of Science And Technology

基　　金：国家重点研发计划项目(2020YFF01015000ZL)。

摘　　要：现有的粉尘监测装置受限于单一传感器及固定监测点,无法准确检测局部空间内的粉尘浓度,提出一种基于线激光辅助CCD图像的面维度粉尘浓度分布检测方法。在单个球型粒子的Mie散射理论上引入颗粒群光散射模型,建立了粉尘浓度与CCD像元接收光通量的理论模型,根据颗粒群光散射理论和Beer-Lambert衰减定律求解粉尘浓度分布,搭建自制监测实验平台验证其可行性。结果表明,粉尘的分布随时间推移而产生难以准确测量的多变性,在特定位置的PM2.5传感器测得粉尘浓度为687μg/m^(3),与文中方法计算所得的平均浓度3.85μg/m^(3)存在较大差异。The existing dust monitoring devices cannot accurately detect the dust concentration in local space due to the limitation of single sensor and the fixed monitoring points. This paper proposes a surface dimension dust concentration distribution detection method based on line laser-assisted CCD image. The study involves introducing a particle group light scattering model based on Mie scattering theory of a single spherical particle;establishing a theoretical model of dust concentration and the light flux received by CCD element;solving the dust concentration distribution based on the particle group light scattering theory and Beer-Lambert attenuation law;and building a homemade monitoring experiment platform to verify the feasibility. The results show that the dust distribution is difficult to be accurately measured with the passage of time. The PM 2.5 sensor at a specific location measures a dust concentration of 687 μg/m^(3), which is significantly different from the calculated average concentration of 3.85 μg/m^(3).

关 键 词：粉尘浓度 MIE散射 CCD Beer-Lambert定律 

分 类 号：TD714[矿业工程—矿井通风与安全]