多普勒效应测速实验仪的改进  

THE IMPROVEMENT OF DOPPLER SPEEDOMETER FOR EXPERIMENT

作　　者：张伶俐[1] 贝承训[1] 黄绍江[1] 

机构地区：[1]华南理工大学,广州510006

出　　处：《大学物理实验》2009年第3期60-63,共4页Physical Experiment of College

摘　　要：对多普勒效应实验仪的机械组成部分及微处理程序进行改进,使之能够测量运动方向不在连线RS[1](超声发射器和接收器在同一时刻的连线)上的速度。这使得实验更加贴近实际应用,有助加深学生对多普勒效应理论的理解,充分认识理论转化为实际应用的过程及其重要性。This paper introduces a method of improving the Doppler Speedometer used in physics experiment course of university.The improvement in mechanism and microprocessor enables the instrument to measure speed which is not along RS（the line connecting emitter and receiver at the same time）.This makes the experiment more expressive and helps students to understand theory of Doppler Effect better.

关 键 词：多普勒效应 超声波 测速实验仪 角度θ 

分 类 号：O41-33[理学—理论物理]