高铁信号工程相邻轨道电路相同基准载频布置的研究

中国高速铁路列车控制系统(CTCS)包括地面列控系统和车载列控设备两部分。轨道电路是地面列控系统的基础设备。为保证列车控制系统的正常工作,轨道电路的布置既要满足地面列控系统的要求,同时也必须符合车载列控设备的技术条件。一般情况下,相邻轨道电路应设置不同载频。但在一些既有复杂枢纽,无法避免出现相邻轨道电路同基准载频的情形。在这种情况下,如果设计布置不当,会引起列控车载设备产生非正常制动。采用从列控车载设备逻辑功能角度对地面轨道电路的布置应用场景进行分析的研究方法,阐述相邻轨道电路同基准载频布置对列控车载设备的影响。提出的方案能够解决在无法避免出现相邻轨道电路同基准载频的情况下,合理布置轨道电路载频,保证列车的行车安全。

Research on Same Carrier Frequency Setting of Adjacent Track Circuits in High-speed Railway Signal Engineering

Chinese Train Control System(CTCS)of high-speed railway includes two parts:trackside train control system and onboard train control equipment.Track circuit is the basic equipment of trackside train control system.In order to ensure normal operation of the train control system,the layout of the track circuit must not only meet the requirements of the trackside train control system,but also match the technical conditions of the onboard train control equipment.In ordinary circumstances,carrier frequencies of adjacent track circuits shall be set differently.However,in some cases,same carrier frequency of adjacent track circuits may appear unavoidably in some complex hubs,and abnormal braking of onboard train control equipment may be caused by improper design layout.With the methodology of analyzing the application scenarios of onboard train control equipment’s logical function,this paper illustrates the influence of the same carrier frequency of adjacent track circuits on the onboard train control equipment.The scheme proposed in this paper can solve the problem about reasonable arrangement of carrier frequency of track circuit and guarantee normal train operation when same carrier frequency of adjacent track circuits occurs unavoidably in complex hubs.