运动声源的多普勒效应——第22届亚洲物理奥林匹克竞赛实验试题第二题介绍与解析  

DOPPLER EFFECT OF MOVING SOUND SOURCE-PROBLEMS AND SOLUTIONS OF THE 22TH ASIAN PHYSICS OLYMPIAD EXPERIMENTAL EXAM 2

作　　者：钱钧[1,2] 张春玲[1,2] 李文华 赵明刚[1] 刘丽飒[1,2] 惠王伟[1,2] 王槿[1,2] 张天浩[1] 孔勇发[1,2] 宋峰[1] QIAN Jun;ZHANG Chunling;LI Wenhua;ZHAO Minggang;LIU Lisa;HUI Wangwei;WANG Jin;ZHANG Tianhao;KONG Yongfa;SONG Feng(School of Physics,Nankai University,Tianjin 300071;National Demonstration Center for Experimental Physics Education,Nankai University,Tianjin 300071)

机构地区：[1]南开大学物理科学学院,天津300071 [2]南开大学基础物理国家级实验教学示范中心,天津300071

出　　处：《物理与工程》2023年第4期26-30,35,共6页Physics and Engineering

基　　金：教育部产学合作协同育人项目(No.220802557262257)。

摘　　要：第22届亚洲物理奥林匹克竞赛实验试题共两道,其中第二道是声学黑匣子。该题目是一道虚拟实验题目,在二维平面上通过探测器对于运动声源的频率信号探测,判断声源的初始位置以及相关运动学参数等。该题目设计新颖,解法巧妙,综合了声波的传播与测量、声学多普勒效应等相关知识。在疫情形势下,非常适合物理专业学生进行线上虚拟实验学习。本文详细介绍了竞赛试题的内容,并给出试题的分析和解答。There are two experimental exams in the 22nd Asian Physics Olympiad,the second of which is the acoustic black box.This experimental question is a virtual experiment question,which detects the frequency signal of the moving sound source through the detector on the two-dimensional plane,and determines the position of the sound source and related kinematic parameters.This topic is novel in design and ingenious in solution,integrating the propagation and measurement of sound waves,acoustic Doppler effect and other related knowledge.Under the epidemic situation,it is very suitable for students majoring in physics to carry out online virtual experimental learning.This paper introduces the content of the experimental exam 2 in detail,and gives the analysis and the solutions to the problems.

关 键 词：亚洲物理奥林匹克竞赛 多普勒效应 声学 虚拟实验 

分 类 号：G634.7[文化科学—教育学]