摘要
CBTC系统是利用连续、大容量的车地双向数字通信实现列车控制信息、列车状态信息传输的先进列车控制系统,CBTC系统中车地通信子系统对于保障列车安全高效的运营具有重要作用。本文根据CBTC移动闭塞系统中的列车追踪模型,分析系统对通信的要求;利用OPNET的三层建模机制,建立基于802.11g的CBTC车地通信系统的系统仿真模型;利用该仿真平台仿真列控业务下的通信系统性能;仿真结果表明,在区间追踪阶段,基于802.11g的无线局域网完全满足列车控制的需要;需要保证车站附近的AP信号覆盖以满足列车进入中间站停车时对通信的要求。
The Communication Based Train Control （CBTC） system is an advanced train control system which utilizes continuous high capacity bidirectional wireless communications to transmit train control information between train and ground. The train-ground communication subsystem in CBTC plays an important role in ensuring high efficiency and safety in train control. The requirements for communication quality is analyzed on the basis of the multi-trains tracing model in the CBTC moving block system. The system simulation model of the 802.11g-based CBTC train-ground communication subsystem is established by use of the OPNET 3-layer modeling mechanism. Communication performance under CBTC is simulated on the simulation platform. Simula- tion results show that the 802.11 g-based wireless LAN completely meets the control requirements of a train tracing in a section and AP deployed close to the intermediate station should be guaranteed so as to meet the requirements for communication when a train is entering the station for a stop.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2011年第5期72-77,共6页
Journal of the China Railway Society
基金
国家科技支撑计划(2006BAG02B04)
