西门子准移动闭塞信号系统的安全区段概念

Overlap Concept in Signaling System based on Track Circuit

结合南京地铁1号线工程实例,介绍了西门子准移动闭塞信号系统中安全区段的概念,以及计算安全区段需要考虑的各种因素,并用调试过程中的实例对安全区段进行说明。安全区段由信号系统根据工程数据进行计算和配置,用于运行列车之间的安全分隔,在确保列车安全运行的情况下兼顾行车效率。安全区段由列车自动保护系统提供,对于固定停车点也可由联锁系统提供。安全区段的计算需要考虑现场轨道线路数据、车辆数据以及信号系统相关数据等。

Overlap is calculated and configured by signaling system according to project data, it is used for safe train spacing to ensure the operation efficiency. Overlap comes from ATP subsystem, but for the fixed stopping point it can also come from interlocking sub-system. The calculation of overlap usually takes the track DATA, rolling stock data and signaling system data into account. This paper analyzes overlap（interlocking） through operational instances during commissioning stage.