【作者】 张景山； 张其善； 寇艳红；

【Author】 ZHANG Jing-shan,ZHANG Qi-shan,KOU Yan-hong School of Electrical Engineering,Beihang University,Beijing 100083,China

【机构】 北京航空航天大学电子信息工程学院；

【摘要】 为了实现数据采集系统的大量数据的实时传输,提出了一种基于PCI-Express总线的数据采集卡。该采集系统由FPGA实现控制逻辑,为A/D提供采样时钟及控制电平,同时对数据进行格式的转换及缓存。PEX8311实现本地端与计算机PCI-Express接口的桥接,通过上位机程序与板卡硬件的协作,采集的数据被存入PC机中。实测结果表明,本采集卡性能稳定,可以实现对信号的实时采集。更多还原

【Abstract】 A data acquisition card based on PCI-Express bus is designed to enable real time data acquisition and transformation.FPGA is adopted to work as the logic controller,it provides the sample clock and commands for the A/D converter.The FPGA will convert the data format and it will also buffer the converted data. PEX8311 connects the local bus to the PCI -Express bus of the computer.The data is transferred to the computer under the cooperation among hardware software.It is proved that this real time data acquisition card work stably.更多还原