【摘要】 本文提出测定浓密悬浮颗粒平均流速的光学互相关系统。使用微型电子计算机采集和处理数据。通过确定两支激光束衰减扰动互相关函数的峰值位置，可以实现运动粒子速度的无接触测量。实验结果证实光强扰动的互相关技术可以有效地运用于双组份流量计量领域。更多还原

【Abstract】 This paper presents a optical cross correlation system which uses a microcomputer to collect and process data for average velocity measurement of particle cloud in an air suspension. A contactiess measurement of a moving particle velocity can be obtained by determining the position of the peak of the cross correlation function of two attenuated laser beams. The experiment results show that the tecnique of correlation of optica intensity fluctuation can be used as an efficient tool to measure flow velosity in two-component fluids.更多还原