【摘要】 介绍了一种结合FPGA硬逻辑的高速数据处理能力和ARM的高效数字功能扩展能力,实现实时高速电力谐波检测的"FPGA+ARM"硬件新构架.这种新架构采用复用逻辑及流水线技术在FPGA上实现了A/D采样控制、加窗、FFT及模平方等运算.采用uClinux为操作平台在ARM处理器完成对FPGA的现场配置、数据通信处理及人机交互接口等功能.实际应用表明,这种架构可较好地解决电力谐波检测中的"实时性与精确度的矛盾".更多还原

【Abstract】 A new hardware architecture of the realtime detection of power harmonics is presented,in which the ability of FPGA to process data with high speed is combined with the ability of ARM to expand digital functions,the operations of A/D sampling control,windowing,FFT algorithm and determining the square of the magnitude are implemented in FPGA by using the technique of multiplexing logic and pipeline,and the functions of the configuration of FPGA,the processing of the information communications and the interaction of the human with computers are finished in ARM by using uClinux as the operation platform.The practical applications show that this kind of architecture can solve the contradiction between the "real time" and "accuracy" in the detection of the power harmonics well.更多还原