The invention provides an intersection traffic stream modeling and a self-adaption control method and a system. The method comprise steps of perceiving driving-in and driving-out facts, driving-in and driving-out time, numbers of driving-in vehicles at all entrances, numbers of vehicles going straight at the entrances, driving-out and numbers of vehicles at left-handed turning exits of vehicles at all entrances and exits in a signal period; calculating average delay time of the vehicles passing the entrances and the exits of the intersection according to the driving-in and driving-out facts and time; calculating vehicle queuing length according to numbers of driving-in and driving-out vehicles; establishing a traffic stream digital module of the intersection by taking the average delay time of traffic streams in the entrance directions as discrete state variables, taking green time in corresponding direction as control variables, and taking queuing lengths in all directions as output variables; and performing real-time control for the traffic stream digital module by use of the self-adaption control method. The system corresponds to the method. The method and the system are advantaged by long service lifetime, easy maintenance and precise control of traffic signals.
Intersection traffic stream modeling and self-adaption control method and system
2015-09-09
Patent
Electronic Resource
English
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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