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Study and Design of MVB Communication Network in Railway Vehicles

Author: LiuJianWei
Tutor: TanNanLin
School: Beijing Jiaotong University
Course: Safety Technology and Engineering
Keywords: Train Communication Network MVB communication network Security Real-time PC/104 host Embedded linux
CLC: U285
Type: Master's thesis
Year: 2007
Downloads: 531
Quote: 7
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Abstract


Trains LAN technology, field bus technology, and embedded microcomputer control technology is developing rapidly, and countries around the world have successfully developed a distinctive train communication network. In order to regulate the train vehicle equipment data communications standards, and also taking into account the vehicle for further development of the microcomputer, the International Electrotechnical Commission (IEC) the Ninth Technical Committee (TC9) the twenty second working group (WG22) Joint International Union of Railways (UIC) developed train communication network of international standard IEC61375-1, the so-called TCN standard. The TCN by the Wire Train Bus (WTB) Multifunction Vehicle Bus (MVB) two subnets. MVB communication network connected to each programmable device within the vehicle and the individual vehicles of the train of the WTB will together constitute the entire the TCN. MVB communication network is optimized for fast process control bus, and suitable for use as a vehicle bus, which makes MVB gradually become the next generation of the vehicle communication bus standard. This paper is a of complete localization project to participate in the city subway vehicle communication network system based on. The article first introduces the development of domestic and international mainstream train communication network, carried out the technical aspects of the comparison, and thus specific domestic rail transportation vehicles MVB communication network application status and challenges facing. The focus of analysis of the network structure of the MVB communication networks, network data and network level; further elaborated MVB communication network interface device classification, network interface cards and network controllers. Monte Carlo simulation analysis theory of probability and bit error detection MVB communication network error control, analysis and monitoring of the MVB communications network data packets, and thus more comprehensive analysis of the MVB communication network security . Using the MVB communication network must meet the requirements of real-time data transmission rail vehicles. MVB communication network end-to-end transmission delay mainly include the message packet in the buffer within the average waiting delay, transmission packet delay medium, propagation delay, etc., the main factors that affect the packet delay is the average waiting delay of a packet of the packets by the medium access control mode constraints; master message event request frame arrival process is Poisson distributed, multi-message event concurrent events raised arbitration delay is an important factor in the delay of message data packets. Simulation results show that MVB communication network of the process data having real-time characteristics of the packets packet transmission time is determined, the packet length of the network delay little influence. Queuing theory to analyze the main process data from the polling mode delay MVB communication network polling cycle, the relationship of the communication rate, the analysis of the results is given. In accordance with the MVB communications network protocol standards, based on the embedded Linux operating system and a host of PC-104 platform to complete the driver of the MVB communication network, application development, interactive interface with the the network underlying data communication in the the MiniGUI development platform based on fusion, for the MVB communication network applications accumulated experience, also laid the foundation for MVB communication network engineering.

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CLC: > Transportation > Rail transport > Railway communication,signal > Railway Communication
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