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.%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.
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