基于通信网络的列车控制系统

Communication network-based train control system

自动组网(初运行)是列车控制与管理系统(TCMS)的重要特征,通过初运行,确定列车通信网络(TCN)内的节点组成、节点之间的顺序、总线主以及各个节点相对总线主的朝向,这是TCMS对列车进行控制与管理的基础。对于基于无线通信的TCMS,由于无线列车骨干网(WLTB)的网络节点之间没有通信线缆的物理连接,以传统的方式实现自动初运行十分困难,因此实际工程中采用人工设置参数的方式来组网。同样,在虚拟联挂(VC)系统中,多列列车通过WLTB组成列车编队,也存在动态自动组网的问题。在VC系统中,由于跟随列车处于自动驾驶模式,通过人工设置参数来组网的方式也不可行。文章分析了TCN、WLTB的初运行和VC列车编队/解编,探讨了基于无线通信的列车编组初运行或编队动态组网问题的实质与根源,提出通过引入一个更大的网络系统、融合TCMS和信号系统来解决自动组网问题的方法,基于列车控制的视角给出了面向列车全自动运行的基于通信网络的列车控制(NBTC)系统自动组网方法、分层次功能和系统架构,并提出了与NBTC相关的研究方向。

The automatic configuration(inauguration)of train communication networks(TCN)is emphasized as a distinguishing feature of train control and management systems(TCMS).This process establishes the composition and sequence of nodes,identifies the master node,and determines node orientations relative to the master node within TCNs,laying a foundation for train control and management.In scenarios of TCMSs based on wireless communication,the absence of physical wire/cable connections between nodes in the wireless train backbone(WLTB)network renders automatic inauguration in traditional ways impractical.Consequently,manual setting of parameters remains the prevailing configuration practices in engineering applications.Furthermore,the automatic configuration is demanded in a dynamic manner for virtual coupling(VC)systems,where multiple trains are virtually coupled into platoons through WLTB.The configuration mode by manual parameter setting is not viable,since following trains run in an automatic operation mode.This paper analyzed the TCN and WLTB inauguration as well as VC platoon coupling/uncoupling,and delved into the nature and root causes of obstacles encountered in the initialization and dynamic configuration of train platoons based on wireless communication.The findings inspired the introduction of an expanded network system that merges TCMSs and signaling systems to provide an automatic configuration solution.This solution included automatic configuration methods,layered functions,and system architecture for communication network-based train control(CBTC)systems,focusing on automatic train operation aspects.Additionally,the paper also explored CBTC-related domains for potential future research endeavors.