|
| 光阻法颗粒粒径测量验证实验 |
| Experiment on particle size measurement and verification using light-blockage method |
| 投稿时间：2018-12-03 |
| DOI：10.3969/j.issn.1005-5630.2019.05.001 |
| 中文关键词: Mie光散射理论 光阻法 角散射法 信号标定 |
| 英文关键词:Mie scattering theory light-blockage angle scattering signal calibration |
| 基金项目:国家自然科学基金（51776129） |
|
| 摘要点击次数: 3001 |
| 全文下载次数: 3465 |
| 中文摘要: |
| 针对低浓度液体介质中颗粒物的数目和粒径检测问题，基于几何光学原理和Mie光散射理论分析，研究光阻法对球形颗粒的检测，采用角散射并结合图像法验证信号测量的一致性。搭建了一套能采用3种方法同步测试的实验系统，通过对实验测得的6种标准颗粒的光阻信号进行标定，对不同标准颗粒脉冲幅值进行统计平均后拟合和优化，通过拟合公式进一步测定了其他颗粒的粒径。结果表明，对于标称为15.0 μm和63.6 μm标准颗粒的数目中位径与标称值偏差均小于2%，同时对于混合颗粒也具有较好的区分能力。 |
| 英文摘要: |
| In order to detect and analyze the number and size of particulate matter in liquid media, the characterization of standard spherical particles were investigated by the method of light-blockage related to geometric optics and Mie scattering theory, while the method of angle scattering and the image method were used to verify the consistency of the measurement. A system was established that could be available simultaneously for the three methods. To perform a calibration, the amplitudes of obtained light-blockage signal for standard particles with six different sizes were statistically averaged and fitted, which consequently provided a fitting formula to determine the measurement results of other particles. The results for two standard particles and a mixed particle system showed that the median diameters for particles with nominal value of both 15.0 μm and 63.6 μm yielded a deviation less than 2%, and the mixed particles were also well identified in size. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
