基于TMS320F2812与AD73360实现多通道高速同步交流采样

Multi-channel high-speed synchronous AC sampling based on TMS320F2812 and AD73360

提出采样系统的硬件采用AD73360型A/D转换器采集测量多路电压和电流信号;使用TMS320F2812DSP芯片实现高速同步采样及电力参数在时域的计算;给出了AD73360和TMS320F2812的硬件接口电路。采样系统软件使用IQmath Library以实现浮点运算与定点程序代码的无缝接口,简化了程序开发,采用C语言编程,给出了主程序、多通道缓冲串行接口(McBSP)初始化过程等的流程图。论述了采样接收中断、电力参数的时域计算、时域采样数据处理等技术。通过测试验证了设计方案的适用性和正确性。

AD73360 A/D converter is used to acquire the multi- channel voltage and current signals,and TMS320F2812 DSP chip to achieve the high-speed synchronous sampling and parameter calculation in time -domain. The hardware interface circuit between AD73360 and TMS320F2812 is presented. The IQmath Library is adopted to realize the seamless interface between floating-point operation and fixed- point code, simplifying the program development. C language programming is applied,and the flowcharts of main program and initialization McBSP（Multi-channel Buffered Serial Port） process are given. The technologies of sampling receiving interrupt,power parameter calculation and sampled- data processing in time- domain are discussed. The applicability and correctness of the design are verified by tests.