Priority Strategy Realization Of Intersection Of Tram Dispatching Command System

Tram as a very early way of the traffic,experienced the process of prosperity to decline.With the increasingly seriousness of the environmental pollution,road congestion,energy shortage and other issues,the tram goes into the public again and takes to the road to revival.The intersection is an important part of the city traffic,in order to improve the efficiency of the tram at the intersection,it’s necessary to achieve the priority strategy at the intersection so that the tram can be given priority.Firstly,this paper introduces the structure of the signal system of the tram,and explains the structure and function of every subsystem.Secondly,it analyzes the priority strategy of the tram at the intersection,including absolute priority,relative priority and no priority strategy.The applicability,advantages and disadvantages of these three priority strategies are compared,the mathematical model of intersection is established,and the algorithm design of relative priority strategy is completed.Then,the paper introduces how to apply the priority strategy in the tram dispatching and command system,and analyzes several key problems,including train location detection,priority request sending,priority request processing and signal control.In addition,this paper also introduces the system design,including interface display,system communication and signal control program.Finally,the whole process of the tram request at the intersection is analyzed,and the relative priority strategy of the intersection is successfully realized in the laboratory simulation platform.In this paper,the interface design of the tram signal system and the traffic signal system is completed,and the signal processing flow of the tram at the intersection is analyzed.The relative priority strategy is realized in the laboratory simulation platform as well.This paper provides some reference value for the signal control of the tram at the intersection.