单片机控制交通灯(内含程序和实物图).doc

单片机控制交通灯 作者姓名: 专业班级: 指导教师: 摘 要 随着经济发展，汽车数量急剧增加，城市道路日渐拥挤，交通拥塞已成为一个国际性的问题。因此，设计可靠、安全、便捷的多功能交通灯控制系统有极大的现实必要性。根据交通灯在实际控制中的特点，结合单片机的控制功能，提出了一种用单片机自动控制交通灯的简易方法。设计中包括硬件电路的设计和程序设计两大步骤，对单片机学习中的几个重要内容都有涉足。 单片机的应用正在不断深入，单片机可以用来仿真各个系统。在自动控制的单片机应用系统中，单片机往往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软硬件结合，加以完善。 十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的就是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本系统采用单片机STC89C52为中心器件来设计交通灯控制器，实现了通过P1口设置红、绿灯燃亮时间的功能；红绿灯循环点亮，倒计时剩5秒时黄灯闪烁警示（交通灯信号通过P1口输出，显示时间通过P0口输出至双位数码管）。本系统设计周期短、可靠性高、实用性强、操作简单、维护方便、扩展功能强。 关键词：单片机 交通灯 数码管  Microcontroller to control traffic lights Abstract: With economic development, a sharp increase in the number of cars, increasingly crowded city roads, traffic congestion has become an international problem. Therefore, the design of reliable, safe, convenient and versatile traffic light control system of great practical necessity.According to the characteristics of the traffic lights in the actual control, combined with the microcontroller control functions, and easy with Auto Control traffic lights. The design includes two steps of the hardware circuit design and programming have to get involved in several important single-chip learning. The application of microcontroller is the deepening of the Microcontroller can be used to simulate systems. In the automatic control of microcomputer application system, the Microcontroller is often used as a core component to use only Microcontroller knowledge is not enough, but also according to the specific hardware architecture hardware and software, to be improved. Crossroads shuttle vehicles, pedestrians bustling Dealers lane, walkways, and orderly. Rely on to achieve this orderly order? Rely on automatic command system of traffic lights. Traffic signal control. The system uses the Microcontroller STC89C52-centric devices to design the traffic signal controller to achieve a set of red, green light to kindle through the P1 port function of time; traffic light cycle lights, countdown 5 seconds left flashing y