有轨电车通过平交路口车路协同速度控制系统

Vehicle-road Cooperative Speed Control System for Trams Passing at Grade Crossings

[目的]为解决有轨电车在平交路口必须降速的问题,提出一种有轨电车通过平交路口车路协同速度控制系统。[方法]分析了有轨电车平交路口运行特征;介绍了有轨电车通过平交路口车路协同速度控制系统的设计思路,以及控制算法模块的实现流程;对所提控制系统的实施效应进行分析。[结果及结论]所提控制系统通过车辆定位技术和清空区冲突检测技术,结合与路口交通信号机的通信,判定有轨电车通过路口的方式。当有轨电车获得通过路权且清空区无冲突时,采用可控实体隔离设施临时性地创建有轨电车通行的独享封闭区间,保障有轨电车安全高效地通过平交路口。所提控制系统可以实现有轨电车在信号绿灯条件下不减速通过路口。所提控制系统对于前后站台相距250 m以上的无站台平交路口适用性较好,其能提高约15%的运行速度,减少40%的区间运行能耗,同时还能减少因平交路口干扰造成站间运行时间的随机偏差。

[Objective]To address the tram issues of needing speed deceleration at grade crossings,a vehicle-road cooperative speed control system for trams passing at grade crossings is proposed.[Method]The operational characteristics of tram at grade crossings are analyzed.The design concept of the vehicle-road cooperative speed control system for trams passing at grade crossings is introduced,along with the realization process of logic algorithm module.The implementation effects of the proposed control system are analyzed.[Result&Conclusion]The proposed control system uses vehicle positioning technology and clearance area conflict detection technology,combining communication with the intersection traffic signal to determine the method of tram passing through the crossing.When the tram obtains the right of way and the clearance area has no conflicts,a controllable physical isolation facility is temporarily adopted to create an exclusive closed interval for the tram,ensuring efficient and safe passage at the grade crossing.The proposed control system can realize tram passing intersection under green light condition without deceleration,and is well suited for non-platform grade crossings with a distance of over 250 meters between the front and rear platforms,as it can increase operating speed by approximately 15%and reduce interval operating energy consumption by 40%,while also reducing random deviations in inter-station travel time caused by grade crossing interference.