基于AT91RM9200的三相工频电参数测量系统设计  

Design of AT91RM9200-based power frequency electrical parameter meter

作　　者：关健[1] 刘林山[1] 

机构地区：[1]吉林电子信息职业技术学院机械及自动化工程系,吉林吉林132021

出　　处：《电力自动化设备》2007年第6期85-89,共5页Electric Power Automation Equipment

摘　　要：应用ARM微处理器AT91RM9200设计了一种用于三相工频电参数的测量系统,实现了电流、电压、频率、相位、有功功率、无功功率以及累计电量等参数的测量、处理和远传通信功能。系统硬件电路设计采用ADE7754高精度三相电能测量集成芯片与ARM微处理器、电压互感器和电流互感器的测量接口以及SSD1906显示接口,采用RTL8019AS扩展以太网接口及嵌入式TCP/IP协议实现数据远程通信,通过移植实时嵌入式操作系统μC/OS-Ⅱ对所有任务进行调度管理,解决了多任务系统中难以处理的实时性差的问题,同时增强了系统工作的可靠性。An AT91RM9200-based meter is designed for measuring three-phase power frequency electrical parameters of current,voltage,frequency and phase,as well as calculating active power, reactive power and total energy. The interfaces between ADE 7754 （the integrative chip for measuring three- phase electrical energy with high precision） and ARM or PT or CT,as well as the display interface between ARM and SSD1906,are designed. The RTL8019AS,as the extended Ethernet interface,and the embedded TCP/IP protocol are adopted to realize the telecommunication. The embedded uC/OS- Ⅱ real-time operating system is used to dispatch all tasks,which improves the real-time performance of multi-task system and strengthens the system reliability.

关 键 词：电参数 测量 uC/OS-Ⅱ操作系统 以太网 

分 类 号：TM930.9[电气工程—电力电子与电力传动]