基于PCI总线的图像数据采集卡设计

Design of an Image Data Acquisition Card based on PCI Bus

本系统采用了通过高速数据采集系统将相机输出的数字图像数据输入计算机,然后由计算机对图像数据进行准实时处理的技术路线。完成了数据采集卡硬件电路设计、驱动程序设计以及应用软件设计等。在数据采集卡硬件电路设计中,采用了"PCI专用接口芯片+CPLD+缓存"模式,实现了计算机与外设间的DMA方式传输,数据传输率可稳定在50MB/S。

In this paper, the way of design a data acquisition card with high-speed based PCI local bus is discussed first, and the way of high speed acquisition system is presented. The hardware design and software design of acquisition system are discussed. In the hardware design of acquisition system, PCI excusive chip, CPLD and buffer memory are adapted to achieve DMA transfer between computer and peripheral with steady-going transmission speed of 50MB/S.