摘要
针对传统的继电保护冗余系统缺乏对敏感外设容错处理、切换速度慢等问题,提出了基于FPGA的双机热备外设容错系统。该系统由FPGA控制器、DSP控制器、双A/D模块、双继电器模块等外设组成,FPGA控制器完成双机外设模块的故障检测、双机实时切换,为DSP控制器提供A/D实时采样数据、继电器信号接口,DSP控制器对采样数据进行计算与分析,产生继电保护信号,FPGA控制器和DSP控制器通过"心跳"信号互相检测。FPGA控制器时序仿真波形表明:双机外设模块可以实现周期故障自检、双机快速切换。
Aimed at the problems of traditional design of relay protection is lack of fault-tolerance process of key peripheral,and switching is slower the dual-unit hot-standby fault-tolerance relay protection system based on FPGA is presented.The system consists of FPGA controller,DSP controller,dual A/D module,dual relay module and so on.FPGA controller achieves fault detection,real-time switching for dual-unit peripheral module,and provides timely A/D sampling data and signal interface of relay for the DSP controller.DSP controller computes and analyzed the sampling data to work out the output signal of relay protection.FPGA and DSP controller detect each other by " heartbeat " signal.The timing simulation waveforms of FPGA show that it can realize periodic self-testing and dual-unit hot-standby high-speed switching for dual peripherals.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第12期4060-4063,共4页
Computer Engineering and Design
关键词
可靠性
双机热备
容错
继电保护
故障检测与诊断
reliability
dual-unit hot-standby
fault-tolerance
relay protection
fault detection and diagnoses
作者简介
张小鸣(1958-),男,安徽合肥人,博士,教授,研究方向为继电保护系统可靠性;
王秋阳(1984-),男,江西九江人,硕士研究生,研究方向为嵌入式系统可靠性技术;
赵国柱(1987~),男,安徽阜阳人,硕士研究生,研究方向为嵌入式系统可靠性技术。E-mail:xm0298@163.com