Ground equipment system based on Beidou satellite timing signal

Abstract

The invention provides a ground equipment system based on Beidou satellite time service signals. The system comprises a dispatching center equipment subsystem and a plurality of station equipment subsystems. The dispatching center equipment subsystem comprises a dispatching center Beidou Satellite time service instrument, a center clock server and circuit communication prepositive servers of a plurality of circuits. The dispatching center Beidou satellite time service instrument carries out correcting according to time service signals of a Beidou satellite, and clock signals are obtained and output. The center clock server receives clock signals output by the dispatching center Beidou Satellite time service instrument through an NTP center local area network, center clock signals are generated and output. The circuit communication prepositive servers receive the center clock signals through the NTP center local area network and output the center clock signals. The station equipment subsystems comprise self-regulated machines and CBIs. The self-regulated machines receive the center clock signals output by the circuit communication prepositive servers of the circuits belonging to a station through an NTP wide area network. The CBIs obtain the center clock signals through serial buses from the self-regulated machines. According to the ground equipment system, ground equipment can operate according to safe and reliable clock signals, and train running safety can be well guaranteed.

Description

technical field [0001] The invention relates to the technical field of railway operation safety, in particular, the invention relates to a ground equipment system based on Beidou satellite timing signals. Background technique [0002] Trains have become an important means of transportation for people to travel and transport goods. Railway lines are becoming more and more busy, and the intervals between different trains passing the same place (such as the same turnout) are getting shorter and shorter. In order to prevent trains from colliding, the ground equipment system usually monitors, dispatches and monitors the trains. [0003] At present, the frame diagram of an existing ground equipment system structure is as follows figure 1 As shown, it includes: a GPS (Global Positioning System, Global Positioning System) timing instrument 101, a master time server 102 and a CTC application server 103 arranged at a CTC (Central Trafic Control, centralized railway dispatching) cente...

AI Technical Summary

Problems solved by technology

[0005] However, the ownership, control and operation rights of GPS belong to the U.S. Department of Defense. Although it is developed to China for free, it does not promise to guarantee its use;

It can be seen that the security and reliability of the GPS timing signal are relatively low. Even if the existing ground equipment system can use the GPS timing signal to correct their respective clock signals, there are still problems caused by the lack of GPS timing. The hidden danger of the clock signal disorder of the equipment in the system can easily lead to safety accidents, such as traffic accidents caused by errors in dispatching trains, and even paralyze the railway system, seriously threatening the economy and security of our country

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