注：湖北省自然科学基金资助项目（编号:2005ABA282）

作者：张丹红 潘锋

单位：武汉理工大学自动化学院   湖北武汉   430070

中图分类号：TP274+.2   

文献标识码：A   

文章编号：1006-883X（2009）04-0042-04

摘要：结合当前电荷耦合器件(CCD)信号高速采集面临的问题和USB总线的突出优点，采用USB2.0接口芯片EZ-USB FX2系列CY7C68013A作为USB控制器，复杂可编程逻辑器件（CPLD）EPM7128S为控制核心，外接高速先进先出（FIFO）存储器及16位高速A/D转换模块，设计实现了一个高速数据采集系统。详细介绍了硬件、软件设计。与传统设计相比，该系统具有采集速度快、采样精度高等特点。

关键词：USB2.0；EZ-USB FX2；数据采集；高速先进先出（FIFO）存储器；复杂可编程逻辑器件(CPLD)

High-speed data acquisition system based on USB2.0 bus

ZHANG Dan-hong, PAN Feng

(Department of Automation，Wuhan University of Technology，Wuhan, Hubei 430070, China)

Abstract：In view of the problems of the charge coupled device(CCD) data acquisition system and the advantages of USB bus, a high-speed data acquisition system is designed with USB2.0 interface chip EZ-USB FX2 series-CY7C68013A as USB controllers, complex programmable logic device (CPLD) EPM7128S as control core, external high-speed first-in-first-out (FIFO)memory and 16 bit high-speed A/D converter. The hardware, software design are introduced deeply. Compared with the traditional design, this system has higher acquisition speed and higher sampling precision.

Keywords：USB2.0; EZ- USB FX2; data acquisition; high speed first-in-first-out (FIFO)memory ; complex programmable logic device(CPLD)

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备注：2009年  第15卷  第4期