摘要
介绍了一种基于DSP和DDS的高精度扫频信号源的软硬件实现方案。利用DSP芯片TMS320F2812控制DDS芯片AD9834,可以产生EAS系统需要的7.7～8.7MHz频率范围内周期变化的高分辨率、转换速度快、输出频谱纯的扫频信号。文中主要介绍了TMS320F2812最小系统、AD9834与DSP的硬件接口设计、整个系统的软件编程。
The design method of a high accuracy signal synthesizer based on DSP and DDS is presented. By using DSP chip TMS320F2812 to control DDS chip AD9834, scanning signal between 7.7 MHz and 8.7MHz with high resolution,high transferring speed and pure spectrum is obtained,which can be used in EAS.The minimal system about TMS320F2812 and hardware interface with AD9834 and the software flowing of the system are mainly introduced.
出处
《微计算机信息》
北大核心
2008年第28期242-244,共3页
Control & Automation
基金
上海市教委发展基金项目"心脏三维运动视图"(04AB68)
