阜新矿务局职工大学(1)

阜新矿务局职工大学毕业设计（论文）

用PLC控制的交通信号灯

摘要：当今时代是一个自动化时代，交通灯控制等很多行业的设备都与计算机密切相关。因此，一个好的交通灯控制系统，将给道路拥挤、违章控制等方面给予技术革新。随着大规模集成电路及计算机技术的迅速发展，以及人工智能在控制技术方面的广泛运用，智能设备有了很大的发展，是现代科技发展的主流方向。本文介绍了一个智能交通灯系统的设计。该智能交通灯控制系统可以实现的功能有：对某市区的四个主要交通路口进行监控；各路口有固定的工作周期，并且在道路拥挤时中控中心能改变其周期；对路口违章的机动车能够即时拍照，并提取车牌号。在世界范围内，一个以微电子技术，计算机和通信技术为先导的，以信息技术和信息产业为中心的信息革命方兴未艾。而计算机技术怎样与实际应用更有效的结合并有效的发挥其作用是科学界最热门的话题，也是当今计算机应用中空前活跃的领域。本文主要从单片机的应用上来实现十字路口交通灯智能化的管理，用以控制过往车辆的正常运作。

关键词：交通灯控制计算机技术智能单片机十字路口交通灯

Use the traffic signal lamp that PLC controls

Abstract: The times is a automation times nowadays , traffic light waits for much the industry equipment to go hand in hand with the computer under the control of. Therefore, a good traffic light controls system , will give road aspect such as being crowded , controlling against rules to give a technical improvement. With the fact that the large-scale integrated circuit and the computer art promptness develop, as well as artificial intelligence broad in the field of control technique applies, intelligence equipment has had very big development , the main current being that modern science and technology develops direction. The main body of a book is designed having introduced a intelligence traffic light systematically. The function being intelligence traffic light navar's turn to be able to come true has: The crossing carries out supervisory control on four main traffic of some downtown area; Every crossing has the fixed duty period , charges centre for being able to change it's period and in depending on a road when being crowded; The motor vehicle breaking rules and regulations to the crossing is able to take a photo immediately , abstracts and the vehicle shop sign. Within world range, one uses the microelectronics technology , the computer and the technology communicating by letter are a guide's , centering on IT and IT industry information revolution is in the ascendant. But, how, computer art applies more effective union and there is an effect's brought it's effect into play with reality is the most popular topic of conversation of scientific community , is also that computer applications is hit by the unparalleled active field nowadays. The main body of a book is applied up mainly from slicing machine's only realizing intellectualized administration of crossroads traffic light , use opera tion in controlling the vehicular traffic regularity.

阜新矿务局职工大学毕业设计（论文）

目录

前言 0

第1章 PLC概述 (1)

1.1PLC的简介 (1)

1.2PLC的用途与特点 (1)

1.2.1 PLC的用途 (1)

1.2.2PLC的特点 (2)

第二章 PLC控制系统设计 (4)

2.1设计任务和内容 (4)

2.2控制系统设计概要 (4)

第三章十字路口交通信号灯的具体设计 (8)

3.1十字路口交通信号灯的控制要求 (8)

3.2十字路口交通信号灯控制系统电路图 (9)

3.3PLC硬件控制电路设计 (10)

3.4PLC控制程序设计 (11)

3.4.1 PLC的状态转移 (11)

3.4.2 PLC的状态转移图 (12)

3.4.3 十字路口交通信号灯PLC的程序设计说明 (12)

第四章交通灯系统的设计 (14)

4.1交通系统的发展趋势 (14)

4.2选择VHDL硬件描述语言设计的优势 (14)

4.3红绿灯交通信号系统功能描述 (14)

4.4红绿灯交通信号系统的VHDL模块 (16)

4.4.1 时钟脉冲发生电路 (16)

4.4.2 计数秒数选择电路 (17)

4.4.3 倒计时控制电路 (20)

4.4.4 红绿灯信号控制电路 (22)

4.4.5 建立程序包 (24)