粒子图像测速技术测量精度影响因素分析

doi:10.3969/j.issn.1000-1158.2021.03.14

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摘要对基于粒子图像测速(PIV)技术的瞬时全流场测量方法进行了综述。系统介绍了PIV的工作原理、技术的关键环节(获取图像的品质)和影响测量精度主要因素(示踪粒子性能、光源性能、背景噪声、成像畸变、同步器时间分辨率及图像处理算法)。基于这些分析,给出了示踪粒子性能的保障、成像组件的选择以及图像处理方法确定的具体建议。

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	刘兵
	崔骊水
	李小亭
	王毅

关键词 ：计量学, 全流场测量法, 粒子图像测速, 图像处理算法, 光流算法

Abstract：The instantaneous full flow field measurement method for particle image velocimetry(PIV) is reviewed.The working principle of PIV, the key link of the technology(the quality of the obtained image), and the main factors influencing the measurement accuracy (the performance of tracer particles, light source performance,background noise, imaging distortion, time resolution of synchronizer and image processing algorithm) are systematically introduced.Based on the above analysis, specific suggestions are proposed on the guarantee of the performance of tracer particles, the selection of imaging components and the determination of image processing method.

Key words： metrology;full flow field measurement method particle image velocimetry;image processing algorithm;optical flow algorith

收稿日期: 2020-04-30 发布日期: 2021-03-23

PACS:

TB937

基金资助:国家重点研发计划(2019YFF0216102)

通讯作者: 崔骊水(1979-),男,陕西榆林人,中国计量科学研究院副研究员,硕士,从事气体流速流量计量方法及基标准研究。Email: cuils@nim.ac.cn E-mail: cuils@nim.ac.cn

作者简介: 刘兵(1995-),男,河北石家庄人,河北大学质量技术监督学院硕士研究生,主要研究方向是流场可视化测量及校准技术。Email: lb20181884@163.com

引用本文:

刘兵,崔骊水,李小亭,王毅. 粒子图像测速技术测量精度影响因素分析[J]. 计量学报, 2021, 42(3): 346-351.
LIU Bing,CUI Li-shui,LI Xiao-ting,WANG Yi. Analysis of Influencing Factors on Measurement Accuracy of Particle Image Velocimetry Technology. Acta Metrologica Sinica, 2021, 42(3): 346-351.

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