论文部分内容阅读
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。
A virtual block system based on wireless locomotive signals is proposed to achieve the tracing of trains in existing semi-automatic block sections or to newly built low-density and low-speed trains to improve the transport capacity. The main advantage of the system is that it uses wireless transmission of locomotive information, train position, speed and other train control information to form a closed loop of information transmission to ensure the reliability of information transmission. Using virtual blocking mode, the wireless locomotive signal is combined with CTC dispatching centralized system to benefit the system Resource optimization and comprehensive utilization, the station can realize unattended; without the station code, there is no interference by the track circuit information transmission problems; maximum use of existing ground signal equipment and vehicle train control equipment, the system structure is simple and easy Achieve, low cost. This article describes the system structure, basic structure and working principle. The key technologies such as wireless locomotive signal, train locating, train integrity checking and wireless data transmission in the system are mainly described. And the advanced nature of the system, feasibility and system reliability and security were analyzed.