Ground electronic apparatus

Abstract

The invention discloses ground electronic equipment, belonging to the field of signal equipment in railway communication. The equipment of the invention comprises a communication unit, a control unit, an input decoding unit and an amplification detection output unit; the communication unit is connected with the control unit and is used for connecting an external communication line and sending or receiving communication data; the control unit is connected with the input decoding unit and the amplification detection output unit respectively and is used for controlling all units to output the data decoded by the input decoding unit and output control signal which is amplified by the amplification detection output unit; the input decoding unit is connected with the decoded signal input end ofthe control unit and is used for connecting a responder communication line, decoding the low-frequency signal which is fed back by the responder and then transmitting the decoded low-frequency signalto the control unit; the amplification detection output unit is connected with the control unit and is used for amplifying the control signal of the control unit and then outputting the amplified control signal. The ground electronic equipment can accurately monitoring the working state of the responder from a long distance.

Description

technical field [0001] The invention relates to the field of railway communication signal equipment, in particular to a ground electronic equipment supporting communication with an active transponder. Background technique [0002] With the continuous improvement of the national economy's requirements for railway transportation, the requirements for train operation management and safety control have also risen to a new level. In order to ensure the operation control and safety guarantee of high-speed trains, it is necessary to realize the real-time transmission and exchange of dispatching commands, train control information, and safety information. Building a reliable, efficient, two-way, large data volume wireless transmission and exchange system between the train and the ground is a necessary condition for the high-speed operation of the train. [0003] European standard transponder subsystems are used at all levels in the European ETCS. China Train Control System (CTCS) ...

AI Technical Summary

Problems solved by technology

However, in the application of specific occasions in our country, the transmission distance is usually between 1 and 4km. However, if the existing LEU equipment and the existing transponder are used to form the transponder subsystem, the cable itself has the effects of resistance, inductance and capacitance. Influenced by parameters, the amplitude of LEU signal will be attenuated after long-distance cable transmission, the waveform of DBPL signal will be deformed, and the reliability of signal transmission between LEU and transponder will inevitably decrease, and the current transponder uses transparent transmission , the message parsed by the transponder from the DBPL signal will be transparently transmitted to the on-board device

The reduced reliability of LEU and transponder long-distance transmission also affects the transmission of messages, which in turn affects the safety of driving

[0005] Moreover, the existing ground electronic equipment LEU cannot detect the working state of the transponder. In order to detect the working state of the transponder, manual detection or a special device installed on the transponder is used to regularly detect the connection status of the transponder. Such detection method will interfere with the normal operation of the LEU with the transponder and greatly increase the cost

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