摘要
为满足海底沉积物声学特性的实验室测量,该文基于DDS专用芯片AD9850,设计了一种高精度可编程的超声波信号发生器。介绍了AD9850的基本原理和工作特点,给出了单片机与AD9850的硬件接口模块、功率放大电路模块。运用此信号发生器产生的超声波对海底沉积物柱状样品的声特性进行实验测量,并对实验结果进行分析。
To satisfy acoustics characteristics measurement of seabed sediment, a high precision programmable ultrasonic wave signal generator is designed with AD9850 chip which is based on DDS. The basic principle and features of AD9850 are introduced. The power amplification circuit and hardware interface module of MCU and AD9850 were given. The signals generate by the signal generator was used to measure the acoustic characteristics of the seabed sediment, and the experimental results were analyzed.
出处
《液压气动与密封》
2012年第9期28-30,共3页
Hydraulics Pneumatics & Seals
关键词
超声波
AD9850
单片机
信号发生器
uhrasonic wave
AD9850
single chip microcomputer
signal generator
