基于车车通信的虚拟重联技术研究

虚拟重联技术作为提升轨道交通运力使用效能的有效手段，可以解决现有机械重联操作繁琐、列车网络初运行效率低等问题。为提高运营的灵活性，实现安全、高效的列车追踪运行，总结分析机械重联的透明传输和闭环控制思想，在基于前车速度的列车安全间隔防护技术的基础上，依据阈值管理的动态运行调整方式，提出基于车车通信和车辆—信号系统融合的虚拟重联方案。依托高质量的车车通信技术，前后车实时通信，后车充分响应前车的控制命令、运行状态等信息，确保后车始终基于前车的安全状态控车，从而实现虚拟重联列车的闭环同步控制，进一步减小虚拟重联列车内部的运行间隔，提高行车效率。

Research of Virtual Coupling Technology Based on Vehicle-to-Vehicle Communication

Virtual coupling technology, an effective means to improve the efficiency of rail transportation capacity use, can solve the problems of cumbersome operation and low initial efficiency of train network existing in mechanical coupling. To improve the flexibility of operation and achieve safe and efficient train tracking, this study summarizes the ideas of transparent transmission and closed-loop control of mechanical coupling. On the basis of the safety interval protection technology of the preceding train speed and the dynamic operation adjustment mode of threshold management, a virtual coupling scheme based on vehicle-to-vehicle communication and vehicle-signal system fusion is proposed. Thanks to high-quality vehicle-to- vehicle communication technology, real-time communication occur between two vehicles, and the following train fully responds to the control command and operation status of the predecessor and always operates according to the safety status of the predecessor. In this case, the closed-loop synchronous control of the virtual coupled train can be realized and further reduce the internal running intervals of the virtual coupled train, improving the operation efficiency of the train.