基于PLC专家控制系统的十字路口红绿灯控制设计.doc
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基于 PLC 专家控制系统的十字路口红绿灯控制设计
摘要
在当今高速发展的社会里，交通问题成为大家关注的社会问题，而目前国内十字
路口的交通灯控制一般是定时切换控制的，汽车数量的直线上升及现有的定时切换控
制方式的局限性都使得我们有必要寻求一种智能的交通控制系统。基于此本论文主要
思路是：利用探测器（即电磁感应线圈）探测出车辆的流量后，通过可编程控制器
PLC 来实现自动调节红绿灯的时长。
关键词：PLC 控制；交通灯；探测车流量；专家控制系统
Abstract
In the high speed development of society ， the traffic problem becomes the social
problem that everybody pays attention to ， but at present our country traffic lights control
generally is timing. And that the quantities of cars increase straightly and the timing control of
the traffic lights have some bugs make us have necessity to look for a kind of intellective
transportation control system。According to that, the way of thinking of this thesis is that ：
the time of the traffic lights are automatically computed by PLC after the locators(namely
electromagnetic induction coil)have explored the discharge of the vehicle。
Key words: the Control of PLC；Traffic lights；Number cars；the expert control system
I
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