存储示波表中常用电气参数测量设计

Design of Measurement of Common Electric Parameters in Memory Oscillo graph

在基于ARM&MCU的存储示波表设计中,为满足高精度多元电气参数测量,选用了ADS121124位的AD转换芯片实现了5位半的万用表测量,运用等精度和闸门计数技术在FPGA中实现通用计数器参数测量,实验表明该设计是行之有效的。本文讨论了系统设计方案,重点给出了ADS1211应用、FPGA的设计思想和实现方法。

To meet the requirements of high precision measurement of electric parameters in the design of memory oscillograph, a 24 bit AD chip ADS1211 was used to actualize the five and a half bits high precision muhimeter, equal precision and gate count technology were applied for common counter measure on FPGA, experiments showed the design was feaible, it s system design plan was discussed, design thought and practise method of ADS121 land FPGA were given mainly in the paper.