文章对叠加在ZPW - 2000a型无绝缘轨道电路上的DX3型道口信号设备错误报警问题，提出了合理的解决方案。
The paper suggests a good solution for solving the problem of wrong alarm by DX3 type crossing signal equipment on ZPW-2000A jointless track circuit.
当设备异常或检测装置发出事故信号时，PC按程序进行异常事故显示、报警和处理。
PC will give a unusual accident display, alarming and treatment as programmed in case that the conveyer is out of normal order or any accident occurs in the detecting system.
它采用先进的现场总线、传感器、计算机网络技术，利用数据库等软件工程，对现场信号设备实施动态监测，状态信息储存、重放和报警等。
It realizes the dynamic monitoring, condition information memory, re-play and warning etc. to the spot signal devices by use of the advanced spot bus, sensors, web techniques, data base.
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