列车通信网络TCN网的网关技术研究与实现

发布时间：2018-06-04 09:45

本文选题：列车通信网 + RTP协议　；参考：《北京交通大学》2015年硕士论文

【摘要】：随着铁路信息技术的发展,我国已独立自主开发了包含铁路控制科学和信号处理等关键技术和设备,并且逐步与世界铁路系统标准接轨。1998年,铁道部正式将TCN标准列我国的铁路列车通信网络的标准。本文依托北京交通大学与青岛四方车辆研究所开展的企业横向课题"UIC网关的设计与实现”,实现了多功能车辆总线MVB和绞线式列车总线WTB的实时协议(RTP协议)消息数据通信,并在原有协议的基础上,增加了流量控制机制,保证服务质量QoS,进行的主要工作如下： (1)深入研究IEC61375-1标准,划分各功能模块。根据实时协议RTP在OSI参考模型中对应层的规定,抓住各个层的特点。为整个通信流程划分模块,设计相应的数据结构。在传输层实现的过程中,引入超时模块,实现了单播和多播传输层状态机制和状态转换,达到控制消息数据的目的。最后设计了打印模块,方便调试和错误修改。 (2)明确了模块之间的接口,根据通信流程,确定调用关系。自顶向下依次验证程序各个模块和接口函数。编写测试样例,集成各个模块统一测试。设计用户界面,方便操作。通过仿真实验后,完成系统集成,实现开发板之间的真实通信,打印测试结果并分析。 (3)在RTP实时协议的基础上,找出协议内关于流量控制的不足,引入改进的流量控制机制。测试中通过限制通信流速,达到分类处理数据包的目的。在列车通信网络在保证服务质量QoS方面做出尝试。
[Abstract]:With the development of railway information technology, China has independently developed key technologies and equipment including railway control science and signal processing, and has gradually been in line with the world railway system standards. The Ministry of Railways formally listed the TCN standard as the standard of the railway train communication network in our country. Based on the enterprise horizontal project "Design and implementation of UIC Gateway", which is carried out by Beijing Jiaotong University and Qingdao Sifang vehicle Research Institute, this paper realizes the message data communication of MVB and WTB. On the basis of the original protocol, the flow control mechanism is added to ensure QoS. The main work is as follows: 1) deeply study IEC61375-1 standard, divide each function module. According to the rules of the corresponding layer in the OSI reference model of real-time protocol RTP, the characteristics of each layer are grasped. The corresponding data structure is designed for the module of the whole communication flow. In the process of transport layer implementation, the timeout module is introduced to realize the state mechanism and state conversion of unicast and multicast transport layer, so as to control the message data. Finally, a print module is designed to facilitate debugging and error modification. The interface between modules is defined, and the call relation is determined according to the communication flow. The top-down verifies each module and interface function of the program in turn. Write test sample, integrate each module unified test. Design user interface, convenient operation. After the simulation experiment, the system integration is completed, the real communication between the development boards is realized, the test results are printed and analyzed. On the basis of RTP real-time protocol, this paper finds out the deficiency of flow control in the protocol, and introduces an improved flow control mechanism. In the test, the data packet is classified and processed by limiting the communication flow rate. In the train communication network to ensure the quality of service (QoS) to make an attempt.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U270.382;TP393.05

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