Abstract: With the continuous development of automatic blocking technology, ZPW-2000A, as a unified standard, is widely used now, and UM71, multi-frequency shift and other standard information will also be a period of time there. Regardless of format, the monitoring of signal equipment for the interval is always a weak link. In particular, the train speeding demands to a higher range of signal equipment. To address these needs, this paper proposes and implements to prevent construction workers in the railway station, the train cars by the range of injury when operating high-tech equipment. The system can monitor an extension from the scheduling, computer monitor, or computer interlocking collection information. It can also be mechanical room directly from the signal wiring collection of information, gathering information in two ways: serial acquisition mode and CAN bus mode.

Key words: frequency shift more information, serial, CAN bus