基于多普勒效应的激光速度传感器研究  

Study on laser speed sensor based on Doppler effect

作　　者：翁俊杰 金健 王俊卓 Weng Junjie;Jin Jian;Wang Junzhuo(School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学机械学院,江苏镇江212013

出　　处：《无线互联科技》2021年第21期124-126,共3页Wireless Internet Technology

基　　金：江苏大学2019年大学生实践创新训练项目.项目编号:201910299213Y。

摘　　要：文章介绍了应用激光干涉法于速度测量的实验原理及操作、外差干涉改进的相关原理。通过搭建迈克尔逊干涉仪,并将一面反射镜连接被测物体,使其进行运动得到变化的干涉条纹,通过光电二极管将该变化信号转换为电信号,处理后通过示波器显示波形,从波形数据得到多普勒频移,计算出被测物的运动速度。This paper introduces the experimental principle and operation of laser interferometry in velocity measurement, and the related principle of heterodyne interference improvement. By building a Michelson interferometer and connecting a reflector to the object to be measured.It can move to get the changed interference fringes. The changed signal is converted into an electrical signal by photodiode. After processing, the waveform is displayed by an oscilloscope and the Doppler frequency shift is obtained from the waveform data to calculate the movement speed of the object to be measured.

关 键 词：激光干涉法 迈克尔逊干涉仪 多普勒效应 外差干涉 

分 类 号：TN249[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]