【作者】 陈波；

【导师】 石旭刚；

【作者基本信息】 浙江工业大学 ， 通信与信息系统， 2009， 硕士

【副题名】CPU控制系统的实现

【摘要】 随着社会的发展,人们安全意识的提高,视频监控传输系统开始从传统的模拟化、本地化的监控传输系统逐渐演变为全数字化的、多级联网化的、综合化的、宽带化的多业务传输交换系统,针对视频监控技术的这一发展特点,我们前瞻性地提出了VAR综合多业务光传输交换网络平台。VAR系统采用先进的高速光通信技术和独特的实时光纤自愈环网架构,将实时视频、压缩视频、音频、数据、以太网和开关量等信号的传输集成到一个统一的光平台上进行传输,具备自愈保护功能并支持多种网络拓扑结构,可与现存的网络无缝地融合,实现高达16—20G的大容量数据交换。本文主要介绍VAR系统的CPU控制系统的研究和实现。文中首先介绍了目前视频监控系统的现状和研究意义,接着详细介绍了VAR系统的逻辑结构和网络拓扑并分析了各模块的功能和组成。然后介绍了CPU控制系统的硬件组成及其外围电路并简单介绍了VAR系统中的数据传输协议和控制协议。本文的核心是CPU控制系统的嵌入式软件实现,包括了嵌入式Linux在开发板上的移植、嵌入式交叉编译环境的建立、通信协议的实现以及CPU控制系统的底层驱动程序的实现和各个软件模块的设计和实现。最后是对整个设计的回顾并提出了一些尚未解决的问题。更多还原

【Abstract】 With the development of the society, people’s opinion on safety is improving, and the video surveillance transmission system is being improved from the traditional analogy, localization to digitization, service diversification, function integration, and modularization. For these purposes, we designed the VAR multi-services optical transmission and switching integrated network platform. It uses advanced high-speed optical transmission technology and special network truss with optical self-healed ring. It also can transport multiple signals as real-time video, compressed video, voice, and ethernet data, etc. The VAR network can connect to any existed network, and the switch ability of VAR system can be 16-20G. This paper mainly introduces the design and realization of CPU control system for VAR system.Firstly, the paper describes the developmental situation of video surveillance system and study purpose of VAR system. Secondly, it is about the logical structure, network topology of VAR system and the function and composition of VAR sub-modules.Then, it is the introduction about the hardware of CPU control system and its peripheral circuits, data transmission protocol and control protocol of VAR system. In this paper, the core is the implementation of embedded software of CPU control system, including the transplantation of embedded Linux at the target board, the constitution of the environment for embedded cross compile, the realization of communications protocol, the implementation of software-driven program as well as the design and implementation of various modules of CPU control system. Finally, it recalls the design of entire system and proposes a number of open issues.更多还原