基于USB接口的便携式数据采集系统的设计  

Design of Convenient Instrument of Data Acquisition System Based on USB Interface

作　　者：王萌[1] 陈云海[1] 周萍[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《电子质量》2008年第10期9-13,共5页Electronics Quality

摘　　要：为了设计一种便于野外使用的数据采集器,文中研究基于USB接口的便携式数据采集器的系统组成,并进行工程实现。该数据采集系统采用两路14位40MHz的A/D变换器,利用VHDL语言完成了FPGA的逻辑设计与综合,从而实现对FIFO的读写时序控制与USB控制器之间的数据传输,并给A/D提供要求的时钟。利用VC++应用程序设计数据采集系统的控制界面,对采集的数据进行存储,用动态波形显示进行回放等,并有良好的人机界面。In order to design a system which could be used in the open field, the research focuses on the structure of a portable data acquisition system based on USB and the implementation work, The system use two channel ND converters AD9244 whose sampling frequency are 40MHz. All the logical functions of FPGA are realized by programming VHDL codes which realizes the control of reading and writing FiFO and data transferring between FPGA and USB controller and gives ND converter clock signal as well. Then the platform with the feature of easy-going is designed by using VC＋＋ language to control the system, save the received data and displays dynamic wave chart of the data.

关 键 词：USB 数据采集 GPIF A/D变换器 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]