基于显微图像法和数值仿真的宽分布颗粒粒度测量的不确定度分析

姜友新; 吴立敏; 周骛; 徐日辛; 蔡小舒

doi:10.3969/j.issn.1000-1158.2023.06.20

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计量学报 ›› 2023, Vol. 44 ›› Issue (6) : 975-980. DOI: 10.3969/j.issn.1000-1158.2023.06.20

电离辐射、标准物质与生物计量

基于显微图像法和数值仿真的宽分布颗粒粒度测量的不确定度分析

姜友新^1,3,吴立敏²,周骛^1,3,徐日辛^1,3,蔡小舒^1,3

作者信息 +

Uncertainty Analysis of Measurement of Wide Distributed Particle Size Based on Microscopic Image Method and Numerical Simulation

JIANG You-xin^1,3,WU Li-min²,ZHOU Wu^1,3,XU Ri-xin^1,3,CAI Xiao-shu^1,3

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文章历史 +

摘要

随着宽粒度分布标准物质概念的提出,其定值方法也需加以明确。针对宽粒度分布标准物质电子显微图像的处理和不确定度等问题,首先采用了基于霍夫变换圆检测的球形颗粒图像边界识别方法,以实现对粘连颗粒图像的正确分割;其次通过数值仿真的方法确定了由取样数量引入的Dv50测量值的不确定度,并与相关标准进行对比分析, 验证了该方法的可行性;最后提出了由单个颗粒粒径不确定度获取颗粒系平均粒径不确定度的方法,并对粒度分布范围在1~18μm的玻璃微珠颗粒进行了不确定度评估,得到其相对扩展不确定度为1.613%(k=2)。

Abstract

With the introduction of the concept of reference material with wide particle size distribution, its determination method also needs to be clarified. For the processing and uncertainty of electron microscopic images of standard materials with wide particle size distribution, firstly, a method for boundary recognition of spherical particle images based on Hough transform circle detection was adopted to realize the correct segmentation of adhered particle images;and secondly, through numerical simulation the uncertainty of the measured value of Dv50 introduced by the number of samples was determined by the method,and the feasibility of the mentioned method was verified through comparative analysis with relevant standards; finally, the method of obtaining the uncertainty of the average particle size of the particle system from the particle size uncertainty of a single particle was proposed, and the particle size distribution range of 1~18μm was obtained. The uncertainty evaluation of glass bead particles was carried out, and the relative expanded uncertainty was 1.613%(k=2).

导出引用

姜友新,吴立敏,周骛,徐日辛,蔡小舒. 基于显微图像法和数值仿真的宽分布颗粒粒度测量的不确定度分析[J]. 计量学报. 2023, 44(6): 975-980 https://doi.org/10.3969/j.issn.1000-1158.2023.06.20

JIANG You-xin,WU Li-min,ZHOU Wu,XU Ri-xin,CAI Xiao-shu. Uncertainty Analysis of Measurement of Wide Distributed Particle Size Based on Microscopic Image Method and Numerical Simulation[J]. Acta Metrologica Sinica. 2023, 44(6): 975-980 https://doi.org/10.3969/j.issn.1000-1158.2023.06.20

中图分类号： TB99

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