基于PCI总线的高速数据采集系统

在开发虚拟测试系统过程中,为解决高速数据采集中大容量数据传输和存储问题,以PCI(Peripheral Component Interconnect)总线控制器PLX9054为核心,设计了一种基于PCI总线的高速数据采集系统.给出了数据采集系统的基本结构及单元组成,重点阐述了PCI总线接口软硬件设计方法及注意事项,详细探讨了基于DriverWorks的设备驱动程序开发思想以及基于动态链接库和虚拟仪器软件开发平台的应用软件设计方法.该卡实现了PCI总线主控高速DMA(Direct Memory Access)传输,结合自主研发的虚拟仪器软件开发平台LabScene应用于虚拟仪器本科实验教学中,亦可作为标准通用高速数据采集卡使用.

Design and Implementation of High Speed Data Acquisition System Based on PCI Bus

In order to solve the problem of mass data transmission and storage during the period of developing virtual test and measurement system, a high speed data acquisition system based on PCI (Peripheral Component Interconnect) bus is designed, using PCI bus controller PLX9054 as the core part. This paper presents the structure and circuit cells of data acquisition system, emphasizes the PCI bus interface hardware and software design methods and its rules, discusses an idea of device driver program and design method of application software based on DLL(Dynamic Link Library) and virtual instrument software develop platform. This system realizes high speed DMA(Direct Memory Access) transmission by PCI master mode. It can be used in Virtual Instrument undergraduate experiment course combined with virtual instrument software develop platform LabScene,can also be used as a normal high-speed data acquisition board.