【作者】 胡晓嘉；

【导师】 张桂林；

【作者基本信息】 华中科技大学 ， 模式识别与智能系统， 2009， 硕士

【摘要】 图像数据采集系统是信息处理中非常重要的一部分,是利用计算机对各种图像信号进行处理的前提条件,并且在工业,军事等许多领域有着广泛的用途。如何提高数据采集的速率和可靠性,而且提供尽可能多样的接口,是设计整个图像数据采集系统的几个主要问题,同时也指导着该系统未来发展的方向。本课题设计了一种基于PCI总线的红外图像数据采集传输系统。该系统能够将图像数据采集缓存并通过PCI总线上传到计算机内存或硬盘中,而且还提供了LVDS信号,TTL信号和PAL制式的模拟视频信号3种输入接口;同时也可以将计算机硬盘中的图像数据通过PCI总线下传到系统板中进行数据格式变化并输出。整个系统的设计是采用基于FPGA+单口SRAM+PCI9054的方案,共包括数据输入输出模块、逻辑控制模块、数据缓冲模块和PCI接口模块4部分。正文部分先是简要介绍了系统设计中用所到的相关技术知识,然后在提出目前主流设计思想并进行比较的基础上,着重介绍了基于PCI总线的红外图像数据采集传输系统的所采用的整体框架和其各部分硬件的实现,最后简要介绍了系统软件部分的工作并进行总结和展望。基于PCI总线的红外图像数据采集传输系统已经投入到具体项目实践中,后续的功能完善和扩展开发也在进行当中。希望能够将此系统广泛投入到实际应用中,方便我们的科学实验和研究。更多还原

【Abstract】 The image data acquisition system is a very important part of the information processing and helps the image signals to be processed in the computer. It had been widely used in many fields such as industry, military and so on. But there are several problems about the image data acquisition system: how to improve the data transfer rate, how to improve the system reliability and how to provide more interface. That is what the designers will do in the future.This subject designed an infrared image data acquisition and transmission system based on PCI bus. The system can get and cache the image data, and then upload to memory or hard disk of the computer through the PCI bus. The format of the image data can be LVDS, TTL or PAL. The system also can download the image data from the computer and then export. Input and output of the data module, logic control module, data buffer module and PCI interface module compose the whole system which is designed based on FPGA + SRAM + PCI9054.The paper introduces the relevant technical knowledge briefly first. Then compare to several mainstream design thinking, the general frame of the system and hardware realization of each module are put forward. After that, the design of software about the system is briefly introduced. At last, make a conclusion and outlook.The infrared image data acquisition and transmission system based on PCI bus has been applied in some projects, and the expansion and development of the function is in progress. It will be helpful to the scientific research if it is more and more applications.更多还原