基于ARM与CPLD的电网过电压采集系统设计

介绍了一种基于ARM与CPLD的电网过电压采集系统。该系统包括数据采集模块和监控模块两部分,采集模块采用CPLD作为控制核心芯片,支持预触发和变频采样功能;监控模块处理器采用ARM芯片,将过电压信号数据存入CF卡中,并通过以太网传输给PC工作站。该系统具有体积小、联网灵活方便、性价比高等优点。实验测量结果表明,采集系统测量精度高,工作稳定可靠,满足电网过电压监测要求,达到了预期设计目标。

Data Acquisition System for Power System Overvoltage Based on ARM and CPLD

A data acquisition system for overvoltage in power system based on ARM and CPLD is discussed.The system includes a data acquisition module and a monitoring module.The data acquisition module with pre-trigger acquisition and variable sampling speed technique employs a CPLD as its main control chip.An ARM chip is adopted as the CPU in monitoring unit,which stores the over-voltage data in CF card and transmits them to the PC work station through Ethernet.The system has many advantages such as small dimension,convenient networking and high performance to price ratio.The test results indicate that the acquisition system has high accuracy and stability to satisfy the requirements of overvoltage monitoring for power system.