光散射原理在粉尘测量系统的应用研究  

Application research of light scattering principle in dust measurement system

作　　者：付士根[1,2] 李全明 胡家国[1,2] 董贺伟 FU Shigen;LI Quanming;HU Jiaguo;DONG Hewei(China Academy of Safety Science and Technology,Beijing 100012,China;Key Laboratory of Mining Goaf Disaster Prevention and Control of Ministry of Emergency Management,Beijing 100012,China;Mining Company of Shougang Group Co.,Ltd.,Qian'an Hebei 064404,China)

机构地区：[1]中国安全生产科学研究院,北京100012 [2]矿山采空区灾害防治应急管理部重点实验室,北京100012 [3]首钢集团有限公司矿业公司,河北迁安064404

出　　处：《中国安全科学学报》2020年第6期37-42,共6页China Safety Science Journal

基　　金：“十三五”国家重点研发计划(2017YFC0805205);中国安全生产科学研究院基础科研项目(2019JBKY10,2016JBKY16)。

摘　　要：为预防呼吸性粉尘的危害,连续有效监测个体呼尘的质量浓度,根据光散射原理,研制以红外光发射光二极管作为光源的便携式个体呼吸性粉尘质量浓度监测试验样机,开发样机的气路控制电路和光路控制检测电路;将试验样机和对比仪器放于自制粉尘试验装置,并向试验装置通入流量为2 L/min、颗粒粒径5μm左右的粉尘气体。试验结果表明:粉尘质量浓度在0~150 mg/m3范围内,试验样机电压测量值随粉尘质量浓度的增大而增加,二者具有较好的线性关系;利用回归方程计算的试验样机质量浓度测量值与对比仪器的粉尘质量浓度测量值之间的相对误差在±4%范围内,该装置满足相关粉尘检定规程要求。In order to prevent harm caused by respiratory dust and to monitor mass concentration of individual exhalation dust,a portable personal concentration monitoring test prototype was developed by using infrared light emitting photodiode as a light source according to principle of light scattering,and its pneumatic control circuit and optical control and detection circuit were designed.Then,prototype and comparison instrument were put in a self-made dust test device together with dust gas which featured a flow rate of 2 L/min and a particle size of 5μm.The results show that when mass concentration of dust is between 0-150 mg/m3,measured voltage of prototype increases along with increase of dust concentration,and they maintain a good linear relationship.The relative error between measured concentration value of prototype by using regression equation and that of comparison instrument is within±4%,indicating that the device meets requirements of relevant dust verification regulations.

关 键 词：光散射 呼吸性粉尘 粉尘质量浓度 个体监测仪 线性关系 

分 类 号：X964[环境科学与工程—安全科学]