基于无线机车信号的虚拟闭塞系统研究

提出一种基于无线机车信号的虚拟闭塞系统,旨在实现既有半自动闭塞区段内的列车追踪运行,或应用于低密度且速度不高的新建线路,达到提高运输能力的目的。该系统的主要优势在于利用无线传输机车信号、列车位置、速度等列控信息,构成信息传输闭环确认,保证信息传输可靠性;采用虚拟闭塞方式,无线机车信号与CTC调度集中系统结合,利于系统资源优化和综合利用,车站可实现无人值守;无需进行车站电码化,不存在因轨道电路受干扰影响信息传输问题;最大限度利用既有地面信号设备和车载列控设备,系统结构简单,便于实现,成本低。本文阐述系统的构成,基本结构和工作原理。对系统中的无线机车信号、列车定位、列车完整性检查,无线数据传输等关键技术进行了重点描述。并对系统的先进性、可行性及系统的可靠性和安全性进行了分析。

Research on a Radio Cab-Signaling Based Virtual Blocking System

This paper has presented a new type of Radio Cab-Signaling-Based Virtual Blocking System(RCBVB) by which operations of trains in semi-automatic blocking sections can be traced.This system can also be used in some new lines with low density and low speed.This system has a lot of merits.For example,a close loop of the train control information transmitted by radio,such as cab-signaling,position and speed of the train can be confirmed;utilization of the virtual block control and the combination of the radio-based cab signalling and centralized traffic control,help to optimize the system resources;then,station coding is no longer necessary;therefore,track circuit information transmission will not be interfered;the existing ground signalling equipment and on-board control equipment can be used at maximum.This system is simple in structure,low in cost and easy to realize.This paper has described the structure and working principle of the system with key at such techniques as the radio-based cab signalling,train positioning,train integrity monitoring and the wireless data transmission method etc.The advantage,feasibility,reliability and security of this system have been analyzed.