基于FPGA的双机热备外设容错系统仿真设计

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。

Design and simulation of dual-unit hot-standby fault-tolerance relay protection system based on FPGA

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 control...