【精品】基于PROTEUS的交通灯毕业设计论文.doc

摘要 交通大系统是社会经济的“血液循环系统”，是制约经济发展的瓶颈。研究 交通问题具有重大的理论和现实意义，为此交通问题吸引了众多学者的注意．交 通问题也是运筹学中研究的重要问题之一，它越来越受到运筹学家的重视，尤其 是近年来人们发现物流是另外一条节约成本的重要途径，是“第三利润源泉”之 后更是如此．在交通方式中有一个重要的方面，那就是城市内部的交通问题。随 着社会生产力的不断发展和人类社会的不断进步，各国特别是像我国这样的发展 中国家城市化水平会越来越高，城市交通问题会越来越严重，严重的堵车现象是 每个人有目共睹和亲身体验的。究其原因，主要有：或是现行路网的通行能力不 够，或是现行路网的道路定向不合理，或是由于对交通流的管理控制不力。解决 城市交通问题的根本途径有两条：一是加快交通设施建设；二是加强交通管理。 然而在城市内修建或扩建已有道路的可能性越来越小，因而加强对现有道路的合 理利用以及对交通信号灯的有效控制和管理成为改善交通状况的重要途径． 本文提出的基于PROTEUS的交通信号灯设计系统以单片机（STC89C52）为核心，信号灯，计数器，数字显示电路等几部分组成。该系统大部分功能通过硬件来实现，电路简单明了，系统稳定性很高。全文针对整个实验系统，首先介绍了作为实验系统软件平台的 Proteus，叙述其功能，分析选择其作为软件平台的可行性和优越性。接着Proteus 对单片机及单片机外围电路进行仿真，程序的变化在仿真元件的性质变化上得到体现；实验原理得到诠释，原理图设计公开化，实验原理容易理解，Proteus 与Keil 的联调将硬件仿真的过程完美展现。 关键词: STC89C52 、交通灯、PROTEUS、KEIL、改善交通Abstract Traffic big system is social and economic blood circulation system, is the bottleneck of restricting economic development. Study the traffic problem is of great theoretical and practical significance, therefore the traffic problem attracted many scholars attention. The traffic problem is also a study in operations research one of the important problems, it has been more and more attention of the house of operations research, especially in recent years, people found that logistics is another cost savings in a major way, is the third profits source after is even more so. In the traffic in the way is a important aspects, that is within the city traffic problems. With the continuous development of the social productive forces and the human society advances, especially in countries like that developing countries will more and more high level of urbanization, the urban transportation problem will be more and more serious, serious traffic jam phenomenon is obvious to everyone and experience. Investigate its reason, basically have: or the current network traffic capacity of no ，Enough, or the current network of directional not reasonable way, or because of traffic flow management control effectively. Solve the urban traffic the root of the probl