【作者】 孙涛；

【导师】 姜守达；

【作者基本信息】 哈尔滨工业大学 ， 仪器科学与技术， 2008， 硕士

【摘要】 目前,在航空和雷达等领域对数据采集速度的要求越来越高,同时还要求系统具有硬件回放功能。在这样的应用背景下,本文设计了一种基于PCI-E总线的高速数据采集回放模块,以适应该领域对高速数据采集的要求。本文采用交叉采样技术实现了高速数据采集功能;采用高速的数模转换芯片AD9773实现了硬件回放功能;采用DDR2存储器实现了高速数据的实时存储;采用了PCI Express串行总线实现了PC机对高速数据采集回放模块的工作方式和数据传输控制;采用FPGA设计了逻辑控制器,并用VHDL硬件描述语言编写了对PCI Express接口芯片、信号调理电路、高速数据采集电路、DA硬件回放电路和DDR2存储器电路的控制逻辑。采用WinDriver开发了设备的驱动程序,实现了对PEX8311内部的寄存器的访问;采用Mirosoft Visual C++软件开发了上位机软件,实现了数据下载,数据波形显示,数据硬回放管理及模块控制等功能。实际的测试和运行的结果,表明设计思想正确,各项技术指标基本达到要求。更多还原

【Abstract】 At present, In the areas of aviation and radar data acquisition on the increasingly demanding high-speed. Meanwhile, we also need to a system of hardware playback. Considering this applied background, this thesis designs a high speed data acquisition and playback module based on PCI-E BUS, to adapt to high-speed data acquisition requirements of the field.In this paper, cross-sampling technique to achieve a high-speed data acquisition functions. High-speed digital-to-analog chip AD9773 is adopted to achieve the hardware playback.DDR2 memory is adopted to store high speed data. PCI Express is adopted in order that our PC machine can control the working manner and data transmission of the high speed module. FPGA is used to design logic controller. At the same time, this thesis achieves the successful control for interface of PCI Express, for AD acquisition circle, for DA hardware playback circle and for DDR2 control circle, using VHDL.Using the software of WinDriver, we develop hardware drivers of the system to visit the registers of inside PEX8311. Also, we develop the software of main computer with Visual C++ to achieve the function of loading data, showing data wave, managing data hardware playback, controlling module and other functions.The designing thought is proved to be true through the actual testing and running results, the module being developed achieves the basic request of all kinds of technology guidelines.更多还原