一种多通道自动扫描A/D转换模块的设计  

A Design of Multi-channels Automatically Scan A/D Conversion Board

作　　者：贾晓华[1] 

机构地区：[1]江苏自动化研究所,江苏连云港222006

出　　处：《计算机测量与控制》2011年第10期2475-2477,共3页Computer Measurement &Control

摘　　要：A/D转换模块用于扩展CompactPCI计算机系统的数据采集功能;该模块通过CompactPCI总线与主机通讯,通过AD7612实现750ksps、16Bit的模拟/数字转换,完成数据采集功能;在设计上采用CPLD、FIFO和RAM实现多通道的自动扫描,提高了模块数据采集的智能化设计;采用磁隔离器件实现A/D转换的数据和控制信号的隔离,提高了数据采集的精度;该模块已经在产品上应用,性能稳定。A/D conversion board is used for expanding CompactPCI computer system＇ s data collection function. The module exchanges data with host through CompactPCI bus, and achieve simulated＆digital conversion of 750ksps, 16Bit through the AD7612 , and completed data collection function. In the designing used the CPLD FIFO and RAM to implement multi channels of the Automatically scan , improved data collection of intelligent design module; Use the isolation device to separate A/D conversion of the data and control signals isolation , improved data collection precision. The module has been in product applications, and performs stable.

关 键 词：AD7612 多通道 自动扫描 A/D 隔离 

分 类 号：TP353[自动化与计算机技术—计算机系统结构]