CCD散射图样法测量粉尘质量浓度影响因素研究  

Study on influencing factors of dust mass concentration measurement based on CCD scattering pattern method

作　　者：刘丹丹 王威廉 李德文 郭胜均 汤春瑞 LIU Dandan;WANG Weilian;LI Dewen;GUO Shengjun;TANG Chunrui(School of Electrical and Control Engineering,Heilongjiang University of Science and Technology,Harbin Heilongjiang 150022,China;CCTEG 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,黑龙江哈尔滨150022 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《中国安全生产科学技术》2024年第9期89-95,共7页Journal of Safety Science and Technology

基　　金：国家重点研发计划项目(2020YFF01015000ZL)。

摘　　要：为减小连续在线式电荷耦合器件(charge-coupled device,CCD)传感器相机散射图样法测量粉尘质量浓度相对误差,提高该方法准确性。针对不同入射色光、颗粒粒径、相机传感器感光元件位置以及交互影响因素进行理论研究和实验验证;由于光子具有随机粒子统计特性,所以对测量数据进行独立样本T检验以及基于单因素验方分析的均值差异检验。研究结果表明:大粒径颗粒测量质量浓度偏低、曲线平滑,小粒径颗粒测量由于具有“双峰”现象,所以质量浓度曲线会有波动;为减小测量相对误差,应在不改变相机传感器位置前提下尽量选择红色线激光入射。研究结果可为粉尘质量浓度光学测量装置的改进和校准提供参考。In order to reduce the relative error of dust mass concentration measurement relative by the continuous on-line charge-coupled device(CCD)sensor camera scattering pattern method,and improve the accuracy of this method,the theoretical research and experimental validation were carried out under different incident color lights,particle sizes,camera sensor photoreceptor positions,and interacting influencing factors.Aiming at the statistical random particle properties of photons,the independent samples T-test and mean difference test based on single factor variance analysis were conducted on the measured data.The results show that the measured mass concentration of large particles tend to be lower,with the smooth curve.Due to the“double peak”phenomenon,the mass concentration curve of small particles present the fluctuation.To minimize the measurement relative errors,red linear laser incidence should be selected as much as possible under the premise of without altering the position of camera sensor.The research results can provide a reference for the improvement and calibration of optical measuring devices for dust mass concentration.

关 键 词：CCD散射图样 粉尘质量浓度 色光 颗粒粒径 散射角 均值差异检验 

分 类 号：X936[环境科学与工程—安全科学]