动车组车辆级网络仿真系统的研究与实现

发布时间：2019-04-25 11:59

【摘要】：随着国民经济的迅速发展,人们对铁路出行的要求不断提高,不仅要求列车运行速度提高以缩短旅行时间,还要求列车更加舒适、安全。通过引进国外的高速铁路技术,在铁路第六次大提速时,开行了运营速度为200km/h级别的动车组。随后,国内铁路装备企业通过对引进技术的不断消化吸收、再创新,已经掌握动车组的相关技术,自主研发生产了速度更高的动车组。然而,作为动车组核心技术之一的列车网络技术,相关核心设备仍然需要从国外购买。为满足列车网络控制系统的国产化需求,并适应列车网络技术的发展,必须研究、发展具有自主知识产权的列车网络技术。本文以CRH2动车组的车辆级网络系统为基础,根据IEC61375-3-4标准,建立了动车组车辆级网络的仿真系统,对研究基于以太网技术构建动车组的车辆级网络,发展具有自主知识产权的以太网列车通信网络具有一定的参考意义。首先,分析了以太网的通信原理、实时性改进方法,以及TCP/IP协议族中重要的TCP和IP协议。其次,研究了TCN体系中的IEC61375-3-4标准,分析了在该标准中描述的使用以太网技术构建列车车辆级网络的相关技术和要求。接着,在CRH2动车组车辆级网络功能和传输信息分析的基础上,采用以太网技术,参考IEC61375-3-4标准中的网络拓扑结构,设计了动车组车辆级网络仿真系统的总体方案。进一步设计了仿真软件的通信模型、帧格式,以及终端装置仿真软件和车载设备仿真软件。最后,利用工控计算机、以太网卡、交换机等硬件和设计的仿真软件共同构建了动车组车辆级网络仿真系统。经过系统测试,表明所建立的动车组车辆级网络仿真系统能够实现模拟CRH2动车组车辆级网络的列车运行控制指令传输、设备状态的实时监控、车上试验的指令传输和结果收集、故障跟踪数据的收集与传输、设备时刻的同步等功能,达到了设计时的功能需求。同时,通过分析动车组车辆级网络仿真系统的网络性能,可以为研究采用以太网技术构建实际动车组的网络控制系统提供一定参考。
[Abstract]:With the rapid development of the national economy, people's requirements for railway travel are constantly increasing, not only to increase the speed of train operation in order to shorten the travel time, but also to require the train to be more comfortable and safe. Through the introduction of foreign high-speed railway technology, in the sixth railway speed-up, the operation speed of the 200km/h-grade EMU was opened. Subsequently, domestic railway equipment enterprises through the continuous digestion and absorption of the imported technology, re-innovation, has mastered the EMU related technology, independent research and development and production of higher speed EMU. However, as one of the core technologies of EMU, the related core equipment still needs to be purchased from abroad. In order to meet the domestic demand of train network control system and adapt to the development of train network technology, it is necessary to study and develop the train network technology with independent intellectual property rights. Based on the vehicle-level network system of CRH2 EMU, the simulation system of EMU vehicle-level network is established according to IEC61375-3-4 standard, and the vehicle-grade network of EMU based on Ethernet technology is studied in this paper. The development of Ethernet train communication network with independent intellectual property has certain reference significance. Firstly, the communication principle of Ethernet, the real-time improvement method, and the important protocols of TCP and IP in TCP/IP protocol family are analyzed. Secondly, the IEC61375-3-4 standard in the TCN system is studied, and the related technologies and requirements of constructing the train vehicle-grade network using Ethernet technology described in the standard are analyzed. Then, based on the analysis of the function and transmission information of the CRH2 EMU vehicle-level network, the overall scheme of the EMU vehicle-level network simulation system is designed by using Ethernet technology and referring to the network topology of the IEC61375-3-4 standard. Furthermore, the communication model, frame format, terminal device simulation software and vehicle device simulation software are designed. Finally, an EMU vehicle-level network simulation system is constructed by using hardware such as industrial control computer, Ethernet card, switch and simulation software. Through the system test, it is shown that the EMU vehicle level network simulation system can realize the train operation control command transmission, the real-time monitoring of the equipment status, the command transmission of the vehicle test and the collection of the results, simulating the CRH2 EMU vehicle level network. Fault tracking data collection and transmission, equipment synchronization and other functions, achieve the functional requirements of the design. At the same time, through the analysis of the network performance of the EMU vehicle level network simulation system, it can provide some reference for the study of the network control system of the actual EMU based on Ethernet technology.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP393.11;U266.2;U284

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