OPNET基于CAN总线的列车通信网络设计
毕业论文关键词： CAN总线；列车通信网络；OPNET
The design about Train Control Network which based on CAN bus
Abstract: In view of the current Chinese national conditions, this paper compared the advantages and disadvantages of other train communication network, at the same time combined with CAN bus which have high communication rate, high reliability, high cost performance and connection is very convenient, so design of train communication network which based on CAN bus. Completing the design of train communication network architecture, through the OPNET software, set up the simulation platform. Among them, the heart of the simulation is the CAN node design, including CAN bus node domain model, the process model of Input_output and mac_can, this paper focuses on the design of this part of the structure and parameters. For the whole model, using the word and picture at same tine to show the how to build the whole project. At the same time, studied the design scheme by simulation test, like the transmission rate with the average delay of the information transmission or throughput, average load with information transfer delay or throughput and bit error rate and the relationship between the bit error rate and the bus load or throughput, demonstrate the reliability of the scheme.
KeyWords: CAN bus; Train Control Network; OPNET
目 录
1 绪论 1
1.1 课题研究的背景及意义 1
1.2 国内外列车网络研究对象 1
1.2.1 LonWorks网络 3
1.2.2 WorldFIP总线 3
1.2.3 ARCNET网络 3
1.2.4 CAN总线 4
1.2.5 我国列车通信网络应用 4
1.3 课题未来发展 4
2 控制局域网CAN 6
2.1 CAN总线介绍 6
2.2 CAN总线网络模型 6
2.3 CAN总线在列车通信网络中的应用 8
2.3.1 磁悬浮列车车载微机监控系统 8
2.3.2 在机车重联中的应用 8
3 OPNET仿真软件 10
3.1 OPNET仿真软件介绍 10
3.2 OPNET仿真软件特性 10
3.3 OPNET 仿真软件仿真步骤 12
4 系统的软件设计和分析 13
4.1 列车通信网络体系结构 13
4.1.1 列车通信网络的主要功能模块 13
4.1.2 列车通信网络的基本拓扑机构 14
4.2 列车通信网络仿真模型 14
4.2.1 整体模型 14
4.2.2 设计步骤 15
5 系统测试和实验结果分析 17
5.1 CAN总线的节点域模型 17
5.2 CAN总线的进程域模型 20
5.2.1 Input_output进程模型 20
5.2.2 mac_can进程模型 22
5.3 仿真结果分析 25
6 总结 29
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