基于图像光散射颗粒粒度测量方法研究

doi:10.3969/j.issn.1000-1158.2021.04.11

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Abstract An image-based light scattering method was investigated for particle size characterization, in which a novel technique of detector ring center determination was proposed using the least-square algorithm combined with image processing technology. The design of the size parameters of CCD sensor and the number of particle size bin were employed. The differential evolution algorithm of dependent mode was also developed for the inversion of particle size distribution. Afterwards, with the established experimental apparatus for image acquisition of scattered light by particles, eight types of polystyrene latex particles were successively tested the accuracy verification, which yielded measurement errors less than 3% after a comparison with the known nominal sizes. What′s more, experiments on two kinds of soy protein emulsion with different oil volume fractions were conducted, and a deviation within 5% from the image analyzer was depicted accordingly. It manifests that the scattered light flux extracted by the least-square centering technology can provide a great consistence with the theoretical predictions. Furthermore, the proposed CCD sensor with ring of 35 rings is quite helpful in leading to a relatively stable sensitivity matrix of light flux. The proposed method presents an effective way to improve the light scattering method for particle size measurement.

Key words： metrology particle size measurement Mie scattering theory centering technology least square method image processing differential evolution algorithm

Received: 17 August 2020 Published: 20 April 2021

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TB937

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	Articles by authors
	QU Pei-yu
	JIANG Yu
	SU Ming-xu
	CAI Xiao-shu

Cite this article:

QU Pei-yu,JIANG Yu,SU Ming-xu, et al. Research on Measurement Method of Particle Size Based on Image Light Scattering[J]. Acta Metrologica Sinica, 2021, 42(4): 469-475.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.04.11 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I4/469

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