中南大学学报（自然科学版）Issue(1)：290-297,8.DOI:10.11817/j.issn.1672-7207.2016.01.040
基于CCD的粉尘质量浓度光散射测量系统
A CCD-based measurement system for dust mass concentration through light scattering
摘要
Abstract
The scattering integration method can be applied to measure dust mass concentration. However, the measurement system based on scattering integration method has inherent disadvantages that the upper limit of the scattering angle is less thanπand the lower limit is more than zero. The measurement error of dust mass concentration was analyzed through calculating angular distribution of scattering intensity. Considering that charge-coupled device (CCD) has advantages of high sensitivity, low noise and good linearity, a CCD-based measurement system for dust mass concentration was built. The angular resolution and magnification of the measurement system were calibrated through known-size pinholes, and the sensitivity and linearity of the CCD were tested. Finally, the experiments were carried out to evaluate the measurement system through the use of the polystyrene solutions with known particle sizes and concentrations. The results show that the influence of dust particle size on dust mass concentration measurement can be ignored and the scattering angle range within 0.03°−5° is enough for the dust mass concentration measurement using the scattering integration method. The measurement relative error of dust mass concentration is less than 15%.关键词
粉尘质量浓度/CCD/散射积分法/光散射Key words
dust mass concentration/CCD/scattering integration method/light scattering分类
信息技术与安全科学引用本文复制引用
张宸瑜,李舒,许传龙,王式民..基于CCD的粉尘质量浓度光散射测量系统[J].中南大学学报（自然科学版）,2016,(1):290-297,8.基金项目
国家自然科学基金资助项目(51376049)；国家质量监督检验检疫总局科技计划项目(2012QK176)(Project(51376049) supported by the National Natural Science Foundation of China （51376049）
Project(2012QK176) supported by the Science and Technology Development Program of Administration of Quality Supervision, Inspection and Quarantine of People’s Republic of China) （2012QK176）
