大学物理 ›› 2016, Vol. 35 ›› Issue (9): 20-23.

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基于多普勒效应的水波特性实验装置的设计

梁佩莹,梁泽汇,李成龙,黄义清,曹 辉   

  1. 佛山科学技术学院光信息工程系,广东佛山 528000
  • 收稿日期:2015-12-10 修回日期:2016-03-01 出版日期:2016-09-20 发布日期:2016-09-20
  • 作者简介:梁佩莹(1975—),女,广东佛山人,佛山科学技术学院讲师,博士,主要从事教学工作,研究方向为光信息
  • 基金资助:
    国家自然科学基金项目(61275214)、广东省公益研究与能力建设专项资金项目(2015A010103017,2015B0101014)、广东省教改项目(GDJG20142366)资助

Design of an experimental apparatus for water wave haracteristics based on Doppler effect

LIANG Peiying,LIANG Zehui,LI Chenglong,HUANG Yiqing,CAO Hui   

  1. Department of Photoelectric Information and Engineering,Foshan University,Foshan,Guangdong 528000,China
  • Received:2015-12-10 Revised:2016-03-01 Online:2016-09-20 Published:2016-09-20

摘要: 设计了一种基于多普勒效应的水波特性实验装置,在频闪光源照射下,通过毛玻璃屏,可直接观察多普勒效应的现象,通过设计的光电检测装置测量出水波的频率及频率的变化情况,实现水波多普勒频移的数字化测量.当波源位置固定,波源以一定频率振动,根据多普勒效应,通过实时测量多普勒频率,测量出探头的速度,进而推算出水波波速.该装置有利于多普勒效应的水波特性研究,直观演示了多普勒频移现象.

关键词: 多普勒效应, 波速, 多普勒频移

Abstract: A Doppler effect based on experimental apparatus for water wave characteristics is introduced.Under the irradiation of a stroboscopic light source,the Doppler effect of this kind could be observed via a hair glass screen by using this apparatus. By a designed photoelectric detection device,the frequency of wave and its change could be measured thus to realize the digital measurement of wave’s Doppler shift. When the wave source’s position is fixed,and it’s vibrating at a given frequency,according to Doppler low,by measuring the Doppler frequency at real-time,the detector’s speed could be measured thus the wave speed could be calculated. This apparatus provides a direct way of demonstrating Doppler shift thus good for the study of Doppler effect’s wave characteristics.

Key words: Doppler effect, wave velocity, Doppler shift