具有PCI和并行接口的数据采集系统设计

本文提出了由高速高精度A/D 转换芯片、高性能FPGA、PCI 总线接口、DB25 并行
接口组成的高精度数据采集系统的设计方案及实现方法。其中FPGA 作为本系统的控制核心和传输桥梁，采用并行接口和PCI 总线接口的两种数据传输模式，使系统方便的在两种传输模式下进行切换。最后采用QuartusII 开发软件对FPGA 进行开发设计并通过VB 程序编写了应用于PC 端的上层控制软件。
关键字: 数据采集；PCI；并行接口；FPGA
Abstract: The thesis suggested a scheme of designing the high accuracy data acquisition system which is composed of high speed and high resolution A/D converter, high performance FPGA, PCI bus interface and DB25 parallel interface. As the control center and transmission bridge, FPGA played a very important part in this system. There are two kinds of transmission mode. Through logic control of the FPGA, the system can transfer data by the parallel interface or PCI interface. At last, it designs the FPGA using QuartusII design software and utilizes the VB program to design the control software on PC.
Keywords: Data Acquisition; PCI; Parallel Interface; FPGA