光学技术, 2009, 35 (3): 434, 网络出版: 2010-01-12
基于计数法测量激光多普勒测速仪的测速精度
Measuring the precision of laser Doppler velocimeter based on counting
激光多普勒测速仪（LDV） 计数法 AT89S52测速精度 laser Doppler velocimeter（LDV） counting AT89S52-microcontroller precision of measured velocity
摘要
为了测量所设计的激光多普勒测速仪（LDV）的测量精度，用均匀转动的斩波片代替高精度的转台作为标准的速度源，并基于单片机AT89S52，采用光计数的方法测量斩波片上某一固定位置的切向运动速度，LDv的测量结果与之相比较。实验结果表明，LDV测速的相对精度不超过8‰，稳定性较好。
Abstract
In order to measure the precision of LDV,the chopper is used with uniform motion insteading of high precision rotary table.Based on AT89S52,with the method of light counting,a system is designed to measure the velocity of a fixed position on the chopper.Comparing the measured velocity by LDV with count measuring system,the result indicates that the precision of LDV is good to 8 thousandth,and the stability is also good.
周健, 龙兴武, 宋锐, 魏国. 基于计数法测量激光多普勒测速仪的测速精度[J]. 光学技术, 2009, 35(3): 434. ZHOU Jian, LONG Xing-wu, SONG Rui, WEI Guo. Measuring the precision of laser Doppler velocimeter based on counting[J]. Optical Technique, 2009, 35(3): 434.
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