Ⅱ型车控制网络通信及安全底层软件设计

发布时间：2018-08-30 17:36

【摘要】：近年来,我国高速铁路的发展取得了举世瞩目的成就,然而我国的高速列车装备的国产化程度却有待进一步提高。列车控制网络作为高速列车的九大关键技术之一,主要控制在国外大型跨国公司的手里。为了尽快实现列车控制网络国产化,研发出具有自主知识产权的产品,国内轨道交通装备研究机构及厂家都在加大力度进行开发。目前我国对列车控制网络系统的研究还处于初期研发阶段,对列车网络进行纯软件和半实物仿真也是研究的热点。本文依托于“十一五”国家科技支撑计划子课题“高速列车网络控制系统”(项目编号：2009BAG12A06,2009-2012)网络系统半实物仿真,设计并实现了II型车控制网络半实物仿真平台的光电通信接口底层软件,用以驱动ARCNET网络的关键部件类MDM8光电转换卡。同时,根据ARCNET网络特性设计了一种保障通信安全的算法。论文主要工作包括： (1)在II型车网络控制系统已有安全策略的基础上,设计并实现了一种ARCNET网络通信安全算法,即在底层软件中使用DES算法对通信数据进行加密处理,提高数据的安全性。 (2)针对类MDM8光电转换卡的硬件环境和功能需求,为该卡移植了嵌入式操作系统。该操作系统由Linux内核,YAFFS根文件系统和U-Boot引导程序组成。 (3)设计并实现了类MDM8光电转换卡上部分外部设备的驱动程序。为ARCNET网络控制器—COM20022芯片开发驱动程序,以实现ARCNET的组网和数据通信功能。为类MDM8光电转换卡的以太网口—10/100Ethernet MAC接口开发驱动程序,使该卡与对应的功能仿真站点PC机能够正常通信。此外,还对UART串口驱动进行开发,以便跟踪和调试程序。 (4)对设计并实现的各底层软件模块进行了功能测试,测试结果表明,该底层软件满足仿真平台的要求。本文实现了II型车列车控制网络半实物仿真系统中光电通信接口的底层软件,对于CRH2型车列车控制网络系统研发具有一定的参考意义。
[Abstract]:In recent years, the development of high-speed railway in China has made remarkable achievements, but the degree of localization of high-speed train equipment in China needs to be further improved. As one of the nine key technologies of high-speed trains, train control network is mainly controlled by large multinational corporations abroad. In order to realize the localization of train control network as soon as possible and develop products with independent intellectual property rights, domestic rail transit equipment research institutions and manufacturers are increasing their efforts to develop. At present, the research of train control network system in our country is still in the initial stage of research and development, and the pure software and hardware-in-the-loop simulation of train network is also a hot research topic. This paper relies on the hardware-in-the-loop simulation of high-speed train network control system (project No.: 2009BAG12A062009-2012). The basic software of optoelectronic communication interface of the hardware-in-the-loop simulation platform of II control network is designed and implemented, which is used to drive the key components of ARCNET network, such as MDM8 photoelectric conversion card. At the same time, according to the characteristics of ARCNET network, an algorithm is designed to ensure the security of communication. The main work of this paper is as follows: (1) based on the existing security strategy of II vehicle network control system, a ARCNET network communication security algorithm is designed and implemented. That is to use DES algorithm to encrypt the communication data in the bottom software to improve the security of the data. (2) aiming at the hardware environment and function requirement of the MDM8 photoelectric conversion card, the embedded operating system is transplanted for the card. The operating system is composed of the Linux kernel YAFFS root file system and the U-Boot boot program. (3) the driver of some peripheral devices on the MDM8 photoelectric conversion card is designed and implemented. The driver is developed for ARCNET network controller-COM20022 to realize the networking and data communication function of ARCNET. The driver is developed for the Ethernet port -10 / 100 Ethernet MAC interface of the MDM8 photoelectric conversion card, so that the card can communicate normally with the corresponding functional emulation station PC machine. In addition, the UART serial driver is also developed to track and debug the program. (4) the functional tests of the underlying software modules are carried out. The test results show that the underlying software meets the requirements of the simulation platform. In this paper, the bottom software of optoelectronic communication interface in the hardware-in-the-loop simulation system of II train control network is implemented, which has certain reference significance for the research and development of CRH2 train control network system.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U284.48;TN929.1

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