基于双核结构的全数字化闪变仪

摘要

This paper introduced the function and features as weU as hardware and software implementations of complete digital flicker detector based on dual-core structure.The hardware design of the detector used ARM +DSP models of high-speed dualprocessor core , including the pre-signal processing , A/D conversion , touch screen , USB interface , LCD drive and display.About its algorithm,the weak point to IEC flicker measuring method during digital process,it proposed second sampling method which optimized the digital algorithm to IEC flicker detector and used Madab to confirm its accuracy.It overcomes higher sampling frequency causing the hardware resource seldom.Especially, second sampling method is important theoretical and practical significance for embedded digital IEC flicker meLer and upgrading of original meter.%介绍了基于双核结构全数字化闪变检测仪的功能、特点及软硬件实现方案.该检测仪的硬件设计采用ARM+DSP模式的高速双处理器为核心,包括前置信号处理、A/D转换、触摸屏、USB接口、LCD驱动及显示等部分.算法上,针对目前将IEC闪变检测方法数字化过程中所带来的不足,利用二次采样方法,对IEC闪变检测数字化算法进行了优化,并用Matlab软件验证了此方法的正确性,克服了数字化过程中因采样频率过高带来的硬件资源紧张等方面的不足,尤其是对嵌入式全数字IEC闪变仪的研制和原有仪表的升级改造具有重要的理论和实际意义.