基于FPGA和PCI的数据采集系统设计

针对数据采集系统中单片机控制速度慢且数据传输速率受限的问题,构建了基于FPGA和PCI的高速数据采集系统。系统由信号处理单元、AD转换单元、FPGA单元和数据存储单元组成。FPGA既是控制器,控制FLASH并产生AD转换器所需要的逻辑,又是PCI目标设备,实现了与计算机的数据通讯。通过Quartus Ⅱ功能和时序仿真,满足了数据采集的高速性和数据传输的高效性。

Design of Data Acquisition System Based on FPGA and PCI

Aiming at resolving the slow control rate of SCM and limit of data transmission rate,a high-speed data acquisition system based on FPGA and PCI has been constructed. The system is consisted of signal processing unit, AD cOnversion unit, FPGA module and data storage unit. FPGA is not only the controller which controlls the flash and generates the needed logic for ADC, but also a PCI destination device which makes data communication with computer possible. High-speed data acquisition and high-efficiency data transmission are gotten by the Quartus II and timing simulation.