新一代信号系统优化方案研究与前瞻技术探索

Research and prospective technology on optimization schemes for new generation signal systems

随着城市轨道交通逐渐迈向网络化运营,传统的信号系统因复杂的系统架构和冗余接口而面临兼容性与扩展性的迫切挑战。这一现状不仅限制城市轨道交通运能调配的灵活性,也对列车的智能化水平和安全可靠性提出更高的要求。为加强列车对行车空间及车内环境的信息感知能力,并提高轨旁设备利用率,基于故障-安全运行原理、实现列车自动和自主运行融合的列车全自动运行体系是新一代信号系统的发展方向。根据TACS系统基本架构及系统原理,文章重点研究车辆与信号系统之间的深度集成,以精简系统架构和优化信息流路径为目标,基于运能需求阐述系统及设备配置优化方案,将车载控制和轨旁控制进行解耦,提高TACS系统的兼容性和易部署性,最后探索前沿技术实施方向,对TACS系统基于自主感知的降级后备模式进行技术分析,以期在保证行车安全的前提下更加有效地利用有限的线路和车辆资源,充分发挥TACS系统的降配增效优势。

As urban rail transit gradually moves towards networked operation,the traditional signal system is facing the urgent challenges of compatibility and scalability due to the complex system architecture and redundant interfaces.This situation not only restricts the flexibility of urban rail transit capacity deployment,but also puts forward higher requirements on the intelligence level and safety reliability of trains.To strengthen the train's ability to perceive the information of the traveling space and in-vehicle environment,and to improve the utilization rate of trackside equipment,the fully automatic train operation system,which is based on the principle of fault-safety operation and integrates automatic and autonomous train operation,is the development direction of the new generation of signal system.In line with the basic architecture of TACS system and its system principles,this article focuses on the deep integration between vehicle and signal system to streamline the system architecture and optimize the information flow path,and elaborates the system and equipment configuration optimization scheme based on the capacity demand,decouples the on-board control and the trackside control,and improves the compatibility and ease of deployment of TACS system;finally,this article explores the direction of cutting-edge technology implementation and conducts technical analysis on the degradation backup mode of TACS system based on autonomous perception to ensure more effective utilization of limited line and vehicle resources under the premise of operation safety,so as to give full play to the advantages of TACS system in terms of downsizing and increasing efficiency.