基于PC104和DSP的交流电量同步采集系统  

Synchronous sampling system of AC electrical signals based on PC104 and DSP

作　　者：王宁[1] 梁志瑞[1] 赵飞[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力自动化设备》2009年第11期136-139,共4页Electric Power Automation Equipment

摘　　要：设计了基于PC104工控机和DSP的交流电量同步采集系统,异地交流电量同步采集由1台PC机和分布在各处的交流电量同步采集系统和GPS接收器来实现。PC104为系统主机,主要负责数据的接收与处理、人机接口等功能;DSP为从机,主要完成电压/电流相量信号的同步采集、滤波及与PC104的通信等功能;PC104和DSP之间通过双口RAM实现高速通信和资源共享。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系统的A/D转换器同时开始采样,实现了交流电量的异地同步采集。该系统的实验样机在动态模拟实验室中已成功应用。A synchronous sampling system of AC electrical signals is designed based on PC104 industrial control computer and DSP. The synchronous sampling of AC electrical signals is carried out by one PC and several synchronous sampling systems with GPS receiver in different places. PC104,as the host computer of system,is responsible for data receiving and processing,man-machine interfacing and so on while DSP,as the slave computer, for the synchronous sampling of voltage and current phasors,filtering,communicating with PC104 and so on. Dual-port RAM is used for high speed communication and data sharing between PC104 and DSP. The second pulse from GPS via CPLD is converted by DSP into the control signal to control the analog- to- digital converters of synchronous sampling systems in different places to synchronously start AC sampling. A prototype has been successfully applied in dynamic simulation laboratory.

关 键 词：交流电量 同步采集 采集系统 双CPU DSP 

分 类 号：TM734[电气工程—电力系统及自动化] TP274[自动化与计算机技术—检测技术与自动化装置]