摘要
本文设计了基于工控机IPC和数字信号处理器DSP的交流电量同步采集器。DSP芯片TMS320F2812作为下位机,主要完成电压/电流信号的同步采集、滤波处理以及与工控机的通信等;PC547B工控机作为上位机,主要负责数据的接收与处理、人机接口等功能;工控机和DSP之间通过双口RAM实现高速数据通信和资源共享;DSP通过CPLD将GPS系统提供的秒脉冲信号转化为同步采样信号,控制不同地点同步采集器的A/D转换器同时开始采样。
This paper presents a synchronous AC data sampling system based on IPC and DSP. The function of DSP chip TMS320F2812, as the slave computer, is to complete voltage/current synchronization acquisition, signal filtering, and the communication between IPC and other equipment; PC547B,as the host computer, is mainly responsible for data reception and processing, human-machine interaction; Dual port RAM is used for high speed communication and data sharing between PC547B and DSP. The second pulse from GPS via CPLD is converted by DSP into the control signal to control the A/D converters of synchronous sampling system in different places to synchronously start AC sampling.
