基于超声波可调谐拍频的产生及应用研究  

The Application and Research of Tunable Beat Frequency Based on Ultrasonic

作　　者：姚计军[1] 欧夕晨[1] 邱选兵[1] 王青狮[1] 

机构地区：[1]太原科技大学物理系

出　　处：《山西电子技术》2011年第1期7-8,共2页Shanxi Electronic Technology

基　　金：山西省大学生创新项目(200903SJ)

摘　　要：介绍了一种基于单片机的可调数字合成超声波拍频实验,着重介绍了系统的CPU部分、超声波信号发生、信号加法器、信号放大及相应的系统软件设计。实验表明:利用单片机的可调谐拍频实验实现了超声波频段内连续可调的拍频,满足了大学物理超声波拍频实验要求。A digital synthesis tunable beat frequency ultrasound experiments based on single chip is introduced in this article.It highlights the CPU of the system,ultrasonic signal,the signal adder,signal amplification and the corresponding system software design.Experiments show that with the using of MCU adjustable beat frequency experimental it realizes a continuous tunable beat frequency within ultrasonic frequency band so as to meet the beat frequency ultrasound physics experiments.

关 键 词：可调谐拍频 超声波 单片机 DDS 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]