摘要
地面无线闭塞中心(RBC)与列车无线通信超时故障是当前高速铁路运营中比较常见的一类故障,无线超时故障往往发生在RBC移交区,会导致列车由CTCS-3级降级到CTCS-2级,也会触发列车制动甚至停车。导致无线超时故障的原因复杂,很难定位故障源。车地通信通过无线报文进行传输,无线报文的交互信息过程能够反映无线传输系统实时工作状态,因此提出基于无线报文的无线超时故障分析方法。根据无线报文包号,利用MATLAB对车地通信在移交区正常与故障情况下的无线报文交互信息过程进行描绘并拟合成曲线,得到阈值曲线和故障曲线,此阈值曲线是故障判定的重要参考依据。该分析方法有助于定位故障源,提高移交区无线超时故障的排查率,并进行故障预判。
The timeout faults in wireless communication between the ground radio block center （RBC） and the train is a relatively common type of faults in the current high speed railway operation. The wireless timeout faults often occur in the RBC handover area, which would cause the train to be downgraded from CTCS-3 to CTCS-2 and trigger train braking or even stop the train. The causes of wireless timeout faults are complex and it is difficult to locate the source of the faults. Train-to-ground communication is carried out with wireless telegrams, and the information exchange of wireless telegrams can reflect the real-time working status of the wireless transmission system. Therefore, a wireless timeout fault analysis method based on wireless telegrams is proposed. According to the numbers of wireless telegram packets, MATLAB is used to describe and the process of wireless telegram interaction in the handover zone under normal and fault conditions and generate curves, including the threshold curve and fault curve. The threshold curve constitutes an important reference for fault identification. This analysis method helps to locate the source of the faults, improve the troubleshooting rate of wireless timeout faults in the handover area and predict faults.
作者
庹兴兵
徐志根
TUO Xingbing;XU Zhigen(School of Information Science and Technology, Southwest Jiaotong University, Chengdu Sichuan 611756, China)
出处
《中国铁路》
2018年第4期69-76,共8页
China Railway
