一种新型高压不对称脉冲轨道电路接收器的研制

Development of a New Receiver for High-Voltage Asymmetric Pulse Track Circuits

中文关键词:  高压不对称脉冲  轨道电路  ZFFT  分路不良

英文关键词:high-voltage asymmetric pulse  track circuits  ZFFT  bad shunt

中文摘要:

      轨道电路是铁路信号系统中重要的设备之一，轨道电路的故障将影响行车安全。分路不良是其常见的故障之一，高压不对称脉冲轨道电路是解决分路不良的有效手段，然而当前的设备存在线路衰减、需要补偿、费用昂贵等缺点。提出了一种基于网络化的轨道电路接收器方案，直接在室外对高压不对称脉冲的特征参数进行提取，并通过CAN总线网络传输到室内，现场测试数据表明，系统测试精度达到设计要求，能可靠替代原接收器工作。

英文摘要:

      Track circuit is one of the very important equipment in the railway signal system.The failure of track circuit will affect the traffic safety.Bad shunt of track circuit is a common fault in railway signal system,and the high-voltage asymmetric pulse (HVAP) track circuit is an effective solution to it.However,there are some shortcomings in the current equipment such as line attenuation,need compensation,expensive cost,and so on.A network-based track circuit receiver solution is proposed.The characteristic parameters of high-voltage asymmetric pulse are extracted directly in the outdoor,and sent to indoor devices through CAN.Field test data show that the new receiver meets the design requirements,and can work reliably.