新型列控系统列车综合自主定位技术研究

Research on Comprehensive Autonomous Positioning Technology of New Train Control System

安全、准确、高可靠的列车定位技术是列车运行控制系统的基础和核心。现有列控系统的列车定位技术依赖轨道电路,建设及运维成本高,难以适应高海拔铁路的恶劣应用环境。为此提出一种基于卡尔曼滤波的多源融合测速定位技术方案,综合利用卫星导航信息、轮速传感器信息、加速度计信息、应答器信息等,进行列车走行距离和速度计算,可以摆脱对轨道电路的依赖,将列车控制主体转移到车载平台,减少地面设备,节省建设和维护成本,提高系统的适应性。仿真分析结果显示,该方案的安全性及性能能够满足高速铁路对列车定位精度与安全性的要求。

Safe,accurate and highly reliable train positioning and occupation inspection technology is one of the key technologies of train control system.However,the positioning technology of the existing train control system relies on the track circuit,with high construction and operation and maintenance costs,which is difficult to adapt to the harsh application environment such as that of high altitude railway.In this paper,a multi-source fusion speed measurement and positioning technology based on Kalman filter was proposed,where satellite navigation information,wheel speed sensor information,accelerometer information and balise information were comprehensively used to calculate the train running distance and speed.It can eliminate the dependence on track circuit and transfer the main train control to the on-board platform,which reduces ground equipment,saves the cost of construction and maintenance and improves the adaptability of the system.The simulation results show that the safety and performance of the scheme can meet the requirements of high-speed railway for train positioning accuracy and reliability.