一种基于PCI总线的高速数据采集卡设计与实现

Design and Realization of High Speed Data Acquiring System Based on PCI Bus

研究了基于PCI总线的高速数据采集系统的设计方法;讨论了设计高速数据采集系统的关键技术;完成了12 bit、105 MSPS数据采集卡的设计.在系统测试过程中采用存储器直接存取(DMA)通信方式将采集数据直接传到物理内存,有效的解决了大容量数据实时存储的问题.最后给出了系统测试结果,并介绍了Windows98平台下虚拟设备驱动程序的软件设计.

The paper states the design method of high speed data acquiring system based on PCI bus. It makes some discussion on the key technology of circuit design in the data acquiring system, and designs a 12Bit, 105MSPS data acquiring system successfully. In the testing environment, the system transfers the sampled data to physical memory using DMA method, which solves the problem of large quantity of real time data storage . Finally the paper provides the test results of the system, and introduces the design of virtual device driver in windows98 operating system.