基于STM32的二乘二取二安全系统实现.docVIP

摘要 随着， 关键词：STM32 Abstract With Chinas rapid development of urbanization, number of railway transit line between cities is increasing, speed of train gets faster and faster, secure information transfer between stations on the proposed higher requirements, whether it is security, reliability, or timeliness are facing enormous challenges. In this paper, on the background of railway system security, the structure of existing embedded redundant is researched and compared, a design of structure of double 2-vote-2 base on stm32 which is used in safety information transmission optical communication inter-sations equipment, thus improving railway safety information safety and reliability of transmission equipment. This paper focuses mainly include the following: 1, the paper studies the current hot redundant technology, gives reasons to choice of double 2-vote-2 from other redundant structure; 2, introduction structure of Cortex-M3 core, and structure of STM32 chip that based on the core. Gives the details of STM32 chip which’s internal structure and resources, and supporting the development environment; 3, It is built to a modular design approach, the inter-station transmission equipment safety information is divided according to functions, given the structure of double 2-vote-2 based STM32, and various sub-module structure. There are five sub-module: CPU module, communication module, collecting and driver module, network interface module, power module; 4, the possible faults is analyzed, put forward the methods and suggestions how to deal with the failure of post; 5, implementation and test on the important part of system-structure of data and the CPU module. Key Words： STM32ouble 2-vote-2；redundancy；transmission equipment 第1章 绪论 1.1 研究背景 1.1.1 研究意义 中国幅员辽阔、内陆深广、人口众多，资源分布及工业布局不平衡，铁路运输在各种运输方式中占有的优势更加突出，在经济社会发展中具有特殊重要的地位和作用。因此铁路是我国重要的基础设施、国家的大动脉、大众化交通工具。在综合交通体系中处于骨干地位，没有铁路的现代化就难以实现国家的现代化。 运输能力要适应国民经济发展的要求，到2020年基本实现中国铁路现代化。其中，在技术装备上，以客运高速、快速和货运快捷、重载为重点，使我国铁路机车车辆技术、线路