列车自主运行系统(train autonomous circumambulate system,TACS)是未来城市轨道交通信号系统的发展方向,目前在部分城市轨道交通中得到应用。不同于传统的基于通信的列车自动控制系统(communication based train control system,CBTC)...列车自主运行系统(train autonomous circumambulate system,TACS)是未来城市轨道交通信号系统的发展方向,目前在部分城市轨道交通中得到应用。不同于传统的基于通信的列车自动控制系统(communication based train control system,CBTC),TACS系统降级方案尚未形成统一标准,有必要针对现有TACS系统降级方案进行工程适用性分析。基于TACS工作原理,探讨配置降级系统的必要性;结合TACS系统现阶段发展现状,总结了3种现有可行的TACS降级方案,介绍不同降级方案的架构和工作原理,并从系统构成、应用场景、降级下追踪能力等层面对3种TACS降级方案进行定性分析;建立降级下列车追踪时间模型,在相同工程条件下,对3种TACS降级方案的降级列车追踪场景进行仿真,根据仿真结果得出影响降级追踪效率的因素。在上述研究基础上,总结TACS降级系统的关键条件,对3种降级方案的工程适用性、应用效果进行分析,并提出部分改进建议。展开更多
As a development direction of urban rail transit system,the train autonomous circumambulate system(TACS)can operate in a safer,more efficient,and more economical mode.However,most urban rail transit systems transmit s...As a development direction of urban rail transit system,the train autonomous circumambulate system(TACS)can operate in a safer,more efficient,and more economical mode.However,most urban rail transit systems transmit signals through industrial,scientific,and medical(ISM)frequency bands or narrow frequency bands,which cannot meet the requirements of TACS.As a promising solution,the 5th generation(5G)mobile communication provides more services for the future urban rail transit systems,and covers the shortages of exiting communication technologies in terms of capacity and reliability.In this paper,we first briefly review the research status of current train control system and introduce its limitations.Next,we propose a novel network architecture,and present new technologies and requirements of the proposed architecture for TACS.Some potential challenges are then discussed to give insights for further research of TACS.展开更多
文摘列车自主运行系统(train autonomous circumambulate system,TACS)是未来城市轨道交通信号系统的发展方向,目前在部分城市轨道交通中得到应用。不同于传统的基于通信的列车自动控制系统(communication based train control system,CBTC),TACS系统降级方案尚未形成统一标准,有必要针对现有TACS系统降级方案进行工程适用性分析。基于TACS工作原理,探讨配置降级系统的必要性;结合TACS系统现阶段发展现状,总结了3种现有可行的TACS降级方案,介绍不同降级方案的架构和工作原理,并从系统构成、应用场景、降级下追踪能力等层面对3种TACS降级方案进行定性分析;建立降级下列车追踪时间模型,在相同工程条件下,对3种TACS降级方案的降级列车追踪场景进行仿真,根据仿真结果得出影响降级追踪效率的因素。在上述研究基础上,总结TACS降级系统的关键条件,对3种降级方案的工程适用性、应用效果进行分析,并提出部分改进建议。
基金This work was supported in part by the National Natural Science Foundation of China(U2001213,61971191 and 61661021)in part by the Beijing Natural Science Foundation under Grant L182018 and L201011,in part by National Key Research and Development Project(2020YFB1807204)+1 种基金in part by the open project of Shanghai Institute of Microsystem and Information Technology(20190910)in part by the Key project of Natural Science Foundation of Jiangxi Province(20202ACBL202006).
文摘As a development direction of urban rail transit system,the train autonomous circumambulate system(TACS)can operate in a safer,more efficient,and more economical mode.However,most urban rail transit systems transmit signals through industrial,scientific,and medical(ISM)frequency bands or narrow frequency bands,which cannot meet the requirements of TACS.As a promising solution,the 5th generation(5G)mobile communication provides more services for the future urban rail transit systems,and covers the shortages of exiting communication technologies in terms of capacity and reliability.In this paper,we first briefly review the research status of current train control system and introduce its limitations.Next,we propose a novel network architecture,and present new technologies and requirements of the proposed architecture for TACS.Some potential challenges are then discussed to give insights for further research of TACS.
