基于USB和FPGA的数据采集系统设计

文章从系统总体结构、硬件设计和软件设计三个方面阐述基于USB和FPGA的多通道同步数据采集与处理系统的设计方法。系统采用FPGA作为主控芯片,实现了A/D转换芯片的控制、数据在双SRAM中的乒乓缓冲控制以及和USB接口芯片CY7C68013A的通信控制。通过USB驱动程序,动态链接库和LabVIEW实现了上位机中数据的显示,处理与存储。该系统能够满足多通道同步数据采集的要求。

Design of Data Acquisition System Based on USB and FPGA

The paper elaborates the design of multi-channel synchronous data acquisition and processing system based on USB and FPGA from three aspects,such as the system＇s architecture,the design of the hardware and the design of the software.The system adopts FPGA as the main control chip,which has realized the control of the A/D converter,the data＇s cache in the Ping-Pong buffer which is made up of two SRAM,and the communication with the USB interface chip CY7C68013A.And the system realizes the data＇s display,processing and storage via the USB drivers,Dynamic Linkable Library（DLL） and LabVIEW.It is able to satisfy the requirements in the multi-channel synchronous data acquisition.