单交叉口交通灯模糊控制器的设计与实现

Traffic lights controller based on fuzzy control for an isolated road intersection

针对城市单交叉口交通信号控制问题,提出了一种应用模糊控制理论的单交叉口交通灯控制器,并给出了基于大规模可编程逻辑器件的完整设计实现方案。通过感应线圈检测器对4个方向的排队车辆进行统计,并以此为输入查找按照模糊控制规则预先离线运算的控制表,得到绿灯延时。结果表明,与传统的定时控制方式相比,在交叉口交通负荷较小时的情况下,该控制器可以有效的降低车辆等待延时。

Aiming at the current problems accorded on isolated intersection traffic lights, a traffic lights controller using fuzzy control for an isolated intersection was presented here, and the over all design based on programmable logic devices is given in detail. We make statistics for queue vehicles from four directions through magnetic detectors, as a input, then we lookup the table to calculating from the number we got using the fuzzy logic to get the time delay of green lights. The simulation result shows that this controller can decrease the time delay for waiting vehicles efficiently comparedwith controller using traditional control methods, when the traffic load is relatively light in the intersection.