摘要
近年来随着科技的飞速发展，单片机的应用正在不断地走向深入。在实时检测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用，仅单片机方面知识是不够的，还应根据具体硬件结构，以及针对具体应用对象特点的软件结合，加以完善。
该文介绍了一个基于单片机的智能交通灯控制系统的设计与仿真，系统能够根据十字路口双车道车流量的情况控制交通信号灯按特定的规律变化。
该文首先对智能交通灯的研究意义和智能交通灯的研究现状进行了分析，指出了现状交通灯存在的缺点，并提出了改进方法。智能交通灯控制系统通常要实现自动控制和在紧急情况下能够手动切换信号灯让特殊车辆优先通行。该文还对AT89S52单片机的结构特点和重要引脚功能进行了介绍，同时对智能交通灯控制系统的设计进行了详细的分析。最后介绍了PROTEUS嵌入式系统仿真与开发平台的使用方法，利用Proteus软件对交通灯控制系统进行仿真。
关键词：AT89S52单片机；智能交通灯控制系统；PROTEUS仿真
ABSTRACT
In recent years, with the rapid development of science and technology, the application of single-chip microcomputer are to depth. In real-time detection and automatic control system of single-chip applications, Single-chip is often used as a core component, only single-chip knowledge is not enough, It should also be based on the specific hardware structure and application of object-specific features of the software to be perfect. This paper describes a microcontroller-based intelligent traffic light control system design and simulation. System at a crossroads two-lane traffic flow in accordance with the situation in control of the traffic light changes according to the laws of a particular.
The first study, such as Intelligent Transportation Research significance and analysis, point out that the status quo of the shortcomings of the existence of traffic lights and made things better. Intelligent traffic light control system is usually in order to achieve automatic control and in emergency situations to manually switch the signal to allow priority access to special vehicles. The article also AT89S52 MCU pin structure and important functional characteristics are introduced, at the same time intelligent traffic light control system carried out a detailed analysis. Finally, simulation and embedded system protues development platform to use, the use of software protues traffic lights control system simulation.
KEY WORDS：AT89S52 single-chip microcomputer; Intelligent traffic light control system; PROTEUS simulation
