基于PLC交通灯控制系统设计.pdf

摘 要 近期，高新技术得以显著发展，电子器件在现实生活中得到全面的普及，此处单 片机也开始进入大众的现实生活，其在特定层面上加快了传统控制检技术的发展。目 前在及时和全自动控制的的片机实用制度中，其一般被当成关键的构成方面，所以只 了解单片机相关知识是无法完成研究的，有关人员也需要了解其他部分的硬件知识， 加强个部分的知识学习。 那如何才可以保证正常的道路秩序呢？我们需要依赖交通控制信号灯的全自动 指挥系统。交通信号灯控制方式非常多。本系统展现出显著的实际功能，出行非常便 利，后续维护直接便利，通过研究 PLC 的工作原理进行了一系列的软硬件的设计，包 括红绿灯交通信号灯的运行状态，系统运行流程图以及梯形图等，并且进行实验验证， 最终证明有效可行。 关键词：交通灯；PLC；梯形图 Abstract Abstract: Recently, high-tech has got obvious development, electronic devices have been widely used, which SCM gradually into the daily life of the people, promote the development of the traditional control technology in great extent. In real-time detection and automatic control of the microcomputer application system, microcontroller is often used as the main component, so only the master microcontroller knowledge is not enough, we also need to grasp the corresponding hardware knowledge, rich knowledge. Crossroads traffic frequent, crowded, cars and people walking the road intersection. How can we maintain a good road order? We need to rely on the automatic command system of traffic lights. Traffic signal control mode. Here we use MCS-52 Series MCU AT89C52 as the center device to research the traffic light controller, according to the actual traffic flow through the P3 port 8052 chip design of red and green light time; traffic light cycle, in the coming time before the beginning of yellow light warning (traffic light signal output, display output time the two digital tube through the P0 port through the P1 port). The system has obvious practical role, the implementation of more convenient, simple and convenient maintenance. Keywords ：traffic lights; PLC; ladder diagram I