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The Research of Safety Protection Communication Network Basing on Real-time Ethernet and Implementation of the Key Technologies

Author: GaoHaiJuan
Tutor: LiuXiangQian
School: Beijing Jiaotong University
Course: Signal and Information Processing
Keywords: Train operation control system Security communication network Real-time Ethernet EPA Network redundancy Localization
CLC: TP393.08
Type: Master's thesis
Year: 2009
Downloads: 125
Quote: 0
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Abstract


From the 1960s and since the 1970s, many countries of the world, adding to the ranks of magnetic levitation trains and maglev transportation to the introduction of German technology in China to establish the first commercial operation of maglev line in Shanghai, \\Operation control system as an important part of the high-speed maglev is to ensure efficient high-speed magnetic levitation train, essential for the safe operation of the system. Running control system run by the central control system, the partition operation control system and vehicle operation control system of three subsystems, which partition operation control system as an important part of the operation control system, bear run command and security of the entire high-speed maglev system regional security communication network the partition internal security computer and partition an important communications medium of transmission of information between the the partition security features. Existing security communications network core technology lies in the hands of large foreign companies, technically is not open to the localization of the entire high-speed maglev technology, it is necessary to study the security communication network, select security communications network as a research The topic has important practical value. Papers on the basis of the relevant literature, the main job of the work as follows: (1) analysis of the control system for high-speed maglev run control system partition run security communication network applications demand at home and abroad for security communications network the status quo, and pointed out the necessity of security communication network localization. (2) on the basis of clear security communication network applications demand, combined with our formulation of EPA technical characteristics of the real-time Ethernet, a communication network security solutions, the program to enhance EPA real-time Ethernet redundancy network for basic characteristics, EPA protocol as the communication infrastructure, security features added in the the applications physical layer of the protocol, to consider dual redundant Ethernet hardware in order to improve the reliability of the system. (3) for enhanced EPA real-time Ethernet key technical points are given to the enhanced single-chip Ethernet controller constitute EPA communications network card design, hardware and software design, enhanced EPA communications network card and preliminary experiments were carried out on this basis. Pointed out the limitations of the experiments, and further research directions.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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