嵌入式Linux系统及其在故障录波器中的应用

【作者】 王勇；

【导师】 戴跃伟； 唐平；

【作者基本信息】 南京理工大学 ， 系统工程， 2006， 硕士

【摘要】 随着电子信息技术的飞速发展，计算机已经进入了后PC时代，嵌入式系统已经渗入到社会生活的各个方面，并逐步取代PC成为时代的主流。形式多样的数字化产品已经成为信息处理的主要工具。随着嵌入式系统的广泛应用，对嵌入式操作系统的要求也不断提高。Linux以其免费、开放、稳定的性能、广泛的硬件支持等特点，已逐渐成为嵌入式操作系统的首选。 本课题来源于南自科技公司故障录波器开发项目，要求在已有的软硬件环境中构建一个嵌入式Linux系统，该系统作为通信管理单元的平台，实现数据管理和网络通信功能。本文在详细分析Linux系统的特点和基本结构的基础上，讨论了将Linux作为嵌入式操作系统应用于故障录波器的优缺点，并结合具体实际，阐述了如何建立跨平台开发环境和如何在已有的软硬件环境中，构建一个符合系统功能要求的嵌入式Linux系统。 本设计是将嵌入式系统应用于故障录波器中。系统的总体大小在7M左右，启动时间在10秒以内，无图形化界面，具有网络通信能力。在今后的研究中，可以进一步裁减内核并加入图形化支持。更多还原

【Abstract】 Along with the rapid development of IT, we are now in the "post-PC" era. Embedded systems are being used in all fields. It is taking the place of traditional PC systems and gradually becoming the mainstream of this era. Various digital products have been the main tools for information processing. As embedded systems are used more widely, the standards of embedded operation system are raised. Linux is becoming the best choice of embedded system in terms of free use, open, stability and wide-ranged hardware support.This paper is born of the project of Fault Record System done by Nanjing Nanzi Science and Technology Development Co. Ltd. The development of an embedded Linux system in an existing hardware and software environment is demonstrated. By using the system as the platform of communication management unit, the function of data management and network communication could be realised. Based on the analysis of characteristics and architecture of Linux system, both advantages and disadvantages of applying Linux to the Fault Record System as an embedded system are pointed out. Also the relevant technologies as building cross-platform development toolchain are analysed. The way of building an embedded Linux system in conformity with system demands is also described in the paper.It is the first time to apply embedded system to Fault Record System. An embedded system has relatively simple functions in terms of around 7M in size, less than 10-second startup time, network communication ability and no GUI support. Curtailing kernel and adding GUI support could be discussed in more details in future research and development.更多还原