ZPW-2000站内电码化低频编码电路修改方案

Modification Proposal of Low-frequency Encode Circuit for ZPW-2000's Inner-station Coding

以管内侯月线南常站排列正向发车进路时,列车通过道岔区段接收到HU码的故障为背景,通过对ZPW-2000站内电码化双频发送设备低频编码电路原理的分析说明,指出预叠加电路存在的设计缺陷,提出了电路修改方案,并通过联锁试验验证电路改进后达到了预期效果。

Under the background of the failure where the train received the HU code through the turnout section when arranging forward departure route in Nanchang Station of HouYue line, the paper analyzes the principle of Low frequency coding track circuit of ZPW-2000 station double frequency transmission equipment and points out existing design deficits in pre-overlapping cir- cuit. Furthermore, an modification scheme of the circuit is put forward together with interlocking test to verify the effect after improvement.