基于PLC的城市交通控制系统设计

论文编号:ZD468  论文字数:26796,页数:58，有开题报告，任务书，文献综述，PLC：S7-400

摘  要：随着全球工业化和城市化进程的加快，城市将成为人类居住的主要场所，由此决定了城市作为人类文明的象征，随之而来的是一系列城市交通问题的出现，并日趋严重，传统的监控模式已经不能满足当代城市交通控制系统的矛盾，要求要有一种更加合理，更加简便的城市交通控制系统出现，以保证城市道路的安全畅通。而基于PROFIBUS现场总线的城市交通控制系统正是这样一种系统。本文首先叙述了几种交通灯控制方法的特点，然后介绍了几类比较流行的现场总线及其特点，重点介绍了PROFIBUS的特点和发展前景，并阐述了本课题的意义和发展趋势；接着对硬件进行了设计，给出了拓扑结构图，选出了所需的硬件部件并详细介绍了其功能，还给出了交通灯硬件接线图及硬件配置表；然后提出了基于PROFIBUS现场总线网络的通信网络方案和通信原理，介绍了PROFIBUS的协议结构和存储协议，详细阐述了帧的结构、系统行为、数据通信及扩展功能等；最后详述了系统工作方式，并设计出系统的主要程序，以及输入输出的保护。

关键词：PROFIBUS；城市交通；PLC

The urban traffic control system based on PLC

ABSTRACT：Industrialize along with the world to turn the progress with city quickly, the city will become the main place that the mankind live, coming to a decision the symbol that the city is mankind's civilization from here, the emergence that what to follow is a series of city  transportation problem, and gradually serious, the traditional supervision mode has already can't satisfy the antinomy that the contemporary city transportation controls the system, requesting to a kind of more reasonable, the more simple city  transportation control system appear, to guarantee that the safety of the city road is unimpeded.But control the system according to the PROFIBUS the spot  city transportation of the total line exactly and thus a kind of system.This text describes a few transportation lights to control the characteristics of method first, then introduced the spot total line and its characteristicses that several types relatively spread, the point introduced the PROFIBUS characteristics and the development foregroundses, and elaborated the meaning of this topic and develop the trend;Carried on the design to the hardware immediately after, give the rushes toward the structure diagram, selecting the hardware parts need to combine detailed introduced its function, return to the transportation light hardware connects the line diagram and the hardware allocation tables;Then put forward according to the PROFIBUS the spot  correspondence network project of the total line network and correspond by letter the principle, introduce the PROFIBUS agreement structure and saving agreement, detailed elaborated the structure, system behavior, data correspondence of and expand function etc.;Went into detail the system work method finally, and design the main procedure of a system, and input the output's protection.

Keywords：PROFIBUS；URBAN TRAFFIC；PLC

目   录
摘  要  Ⅰ
Abstract Ⅱ
第1章 概 述 1
1.1 现场总线的发展现状 1
1.2 本课题的研究意义 3
1.3 本课题的发展趋势 4
 1.3.1 交通灯的出现与发展 4
 1.3.2 交通灯的控制方法 4
第2章 系统组成及控制要求 6
2.1 系统网络拓扑结构图 6
2.2 硬件配置 7
2.3 PLC模块安装排布顺序及地址表 14
2.4 外围电路设计 16
 2.4.1 外围电路图 16
 2.4.2 外围电路分析 16
 2.4.3 外围电路器件明细 17
第3章 PROFIBUS通信原理 19
3.1 PROFIBUS的协议结构 19
3.2 PROFIBUS传输技术 20
 3.2.1 用于DP／FMS的RS485传输技术 20
 3.2.2 用于PA的IEC1158—2传输技术 20
 3.2.3 光纤传输技术 21
3.3 PROFIBUS总线存取协议 22
 3.3.1 令牌的传递 23
 3.3.2 逻辑环的建立 23
 3.3.3 站的增减 24
 3.3.4 主从方式的优先级调度 24
3.4 FDL帧的结构 24
3.5 系统行为 27
 3.5.1 DPM1和DP从站间的循环数据传输 28
 3.5.2 DPM1和系统组态设备间的循环数据传输 28
 3.5.3 同步和锁定模式 28
 3.5.4 保护机制 28
 3.5.5 扩展DP功能 29
第4章 软件设计 30
4.1 电子设备数据文件（GSD） 30
4.2 PROFIBUS行规 30
 4.2.1 PROFIBUS—DP行规 30
 4.2.2 PROFIBUS—PA设备行规 31
 4.2.3 PROFIBUS-FMS行规 32
4.3 PLC和存储点的地址分配 32
4.4 程序设计及说明 35
4.5 用户界面开发 43
第5章 输入输出的保护 44
5.1 输入端保护 44
5.2 输出端保护 45
结 束 语 46
参考文献 47
致  谢 48
附录 49

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