PXI高精度数字万用表的设计与实现  

Design of digital multimeter based on PXI interface

作　　者：刘洋[1] 王厚军[1] 戴志坚[1] 

机构地区：[1]电子科技大学自动化工程学院,成都611731

出　　处：《电子测量技术》2011年第10期69-71,86,共4页Electronic Measurement Technology

摘　　要：介绍基于PXI接口的五位半数字万用表模块的设计与实现方法。该模块以ES51966为核心,ARM单片机(LPC2103)为控制器,实现了各种电参量的高精度测量以及对测量数据的处理与收发控制,并通过专用PCI接口集成芯片PCI9054实现了PXI接口,从而实现与上位机的通信。本文重点介绍硬件电路的设计思路、驱动程序的设计流程以及FPGA内部接口转换电路的实现,最后对实际测量结果进行分析,并提出改良方法。This paper developed the design of five and a half digital multimeter module based on PXI Interface.The module takes the ES51966 as a core,and ARM（LPC2103）as a controller for the high-precision measurement of electrical parameters and the processing of measurement data.This module also achieve the communication with the host computer through PXI interface which uses PCI9054 chip.This article mainly focuses on the circuit of hardware,the process of software designing and achievement of the internal interface-converting circuit in FPGA.Finally it analyses the actual measure results in different mode,and proposes improved methods.

关 键 词：数字万用表 五位半 ES51966 LPC2103 PXI接口 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]