基于PLC的交通信号灯系统的设计(附原理图,梯形图)
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基于PLC的交通信号灯系统的设计(附原理图,梯形图)(论文11000字)
摘 要:
随着社会的快速发展,人们生活水平的日益提高,汽车等交通工具也越来越多,而这些交通工具提供了人们的的方便,却也带来了越来越多的交通问题。在十字路口,行人穿行于密集的车辆中,不仅增加了交通事故的发生概率,还使得城市交通越发拥挤。为了解决城市交通堵塞,提高道路通行能力,抑制交通事故发生,道路信号灯应运而生,大大缓解了以上诸多问题。我们这次的研究从道路信号等入手,主要目的是有效的缓解城市城市交通压力。此次设计中,交通信号灯的控制主要是通过plc来实现,而交通信号灯的控制,则是由四个方向的三色灯,以及左转车道的三色灯有规律的循环亮灭来完成,控制方式则分为手动控制和自动控制两个部分组成计划使用西门子的S7-200系列CPU226型PLC和S7-200汉化版仿真软件,通过仿真软件,在多次调试之后,实现了所需的全部功能。
关键词:交通信号灯;PLC;S7-200;仿真
Design of traffic signal light system based on PLC
ABSTRACT:
With the rapid development of society, people’s living standards are increasing, and more and more vehicles and transportation are also available. These vehicles provide people with convenience but they also bring more and more traffic problems. At intersections, pedestrians travel through densely populated vehicles, which not only increases the probability of traffic accidents, but also makes urban traffic more crowded. In order to solve urban traffic congestion, improve road traffic capacity, and suppress the occurrence of traffic accidents, road traffic lights came into being, which greatly eased the above problems. Our current study starts with road signals, etc. The main purpose is to effectively relieve traffic pressure in urban cities. In this design, the control of traffic lights is mainly achieved through plc, and the control of traffic lights is accomplished by the four-phase tri-color lights and the tri-color lights of the left-turn lanes. The control method is divided into two parts: manual control and automatic control. It is planned to use Siemens S7-200 series CPU226 type PLC and S7-200 Chinese version simulation software. Through the simulation software, all the required Features.
Keywords: Traffic lights;PLC;S7-200;Simulation
目 录
摘 要 I
ABSTRACT II
1 引言 1
1.1课题的研究背景和意义 1
1.1.1 研究背景 1
1.1.2 研究意义 1
1.2国内外的研究现状 1
1.3设计任务 2
2 系统硬件设计 3
2.1硬件选择 3
2.1.1 PLC选型 3
2.1.2 PLC特点 3
2.1.2 PLC控制设计原则 4
2.2 车流量检测装置 4
2.3 照明设施及控制开关 5
3 系统软件设计 6
3.1控制流程 6
3.2 I/O分配 7
3.3 PLC外部接线 8
3.4系统分析 9
3.3.1路口照明设计 9
3.3.2 夜间控制设计 11
3.3.3 车流量检测设计 12
3.3.4 主系统设计分析 13
4 系统仿真 17
4.1十字路口照明仿真 18
4.2日夜信号变换仿真 22
4.3交通信号灯仿真 24
5 总结 29
参考文献 30
致谢 31
附录 32
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