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PCI总线是当今微机的主流总线,它不仅有高达132M/S的传输率、支持直接存储器访问操作(DMA)等特性,还具有即插即用操作等性能。文章首先介绍了基于PCI总线的图像采集技术,提出了基于PCI总线图像采集卡的硬件工作原理和电路设计以及WDM驱动程序的设计与实现方法;结合基于PCI总线图像采集卡的研制,讨论了这种硬件在实际虚拟仪器测控系统中的应用。
PCI bus is the mainstream of today’s microcomputer bus, it not only has up to 132M / S transfer rate, support for direct memory access operations (DMA) and other features, but also with plug and play operations and other performance. Firstly, the paper introduces the technology of image acquisition based on PCI bus, presents the hardware working principle and circuit design based on PCI bus image acquisition card, and the design and implementation of WDM driver. Based on the research of PCI bus image acquisition card, Application of Hardware in Actual Measurement and Control System of Virtual Instrument.