Global train-localization system

Patent metadata

Field	Value
Publication number	US-12570339-B2
Application number	US-202118003498-A
Country	US
Kind code	B2
Filing date	Sep 22, 2021
Priority date	Mar 23, 2021
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

The present disclosure relates to a global train-localization system. The system may autonomously send a precise location of a train to effectively cope with train location recognition in a case of various faults or degradations. The localization system includes: a backup localization unit installed on the train and configured to read beacon location information on a track; and a global train-localization system (GTS) server configured to receive, store and convert train localization information sent by the backup localization unit and to perform output and display. Compared to the prior art, the present disclosure has the advantages of effectively coping with system degradation, namely, tracking the location of the train in real time even in a case of complete fault of a signal system, etc.

First claim

The invention claimed is:

1 . A global train-localization system, the system being configured to send location of a train in a case of equipment failure, the localization system comprising:
a backup localization unit (BLU) installed on the train and configured to read beacon location information on a track; and a global train-localization system (GTS) server configured to receive, store, and convert train location information sent by the BLU and to perform output and display, wherein the localization system is configured to perform train location tracking of trains in a single train line and train location tracking of trains in a network of train lines, wherein train location tracking of trains in the network of train lines includes configuring train lines in the network by:
configuring beacon identities (IDs) of beacons based on a number of beacons on the train lines in the network;
configuring interface protocols including an interface protocol between the BLU and a beacon antenna, an interface protocol between the BLU and the GTS server, and an interface protocol of a beacon message and the beacon coding;
the BLU dividing the train lines into network segments and configuring network addresses for the network segments; and
cascading the GTS server in the single train line to perform train location tracking of trains in the network of train lines in real-time,
wherein during manual driving of the train, the GTS server is independent of the carborne system and obtains location information of the train via the beacon, the train sends location information in real-time where the train is between beacon 1 and beacon 2, after the train crosses beacon 2, the train is determined to be between beacon 1 and beacon 3, and an axle counter section becomes occupied due to the equipment failure, after the train enters the axle counter section, the train is determined to be between beacon 3 and beacon 4 due to the use of the GTS server, and the train continues to operate in the axle counter section, after the train crosses beacon 5, the train is determined to be between beacon 4 and beacon 5.

2 . The global train-localization system according to claim 1 , wherein the BLU is a set of localization processing systems independent of a carborne system, comprises an independent power supply and an independent ring network, and is connected to the GTS server via a redundant wireless network.

3 . The global train-localization system according to claim 1 , wherein the BLU is connected to a beacon antenna, is configured to read beacon location information on a track and to upload the read beacon location information to the GTS server via a train-ground wireless link.

4 . The global train-localization system according to claim 3 , wherein the uploaded information comprises a train number, a beacon number, and a line number.

5 . The global train-localization system according to claim 1 , wherein the equipment failure includes a failure of axle counter equipment, a failure of interlocking equipment, or a failure of carborne equipment.

6 . The global train-localization system according to claim 1 , wherein to perform train location tracking of trains in the single train line,
each of the trains on the single train line includes a BLU; and meanwhile a control center is configured with a set of GTS servers to receive location information of the trains and display the location information on a display terminal in real-time.

7 . The global train-localization system according to claim 6 , wherein the tracked trains include at least one of electric passenger trains, engineering trains, or special trains.

Assignees

• Casco Signal Ltd

Inventors

• Chen Shaowen
• Zhang Yu
• Wang Xiaoyong
• Shi Cong
• Chai Juan
• Lu Yiran

Classifications

• B61L27/70

  Details of trackside communication · CPC title

• B61L25/025 Primary

  Absolute localisation, e.g. providing geodetic coordinates · CPC title

• B61L25/02 Primary

  Indicating or recording positions or identities of vehicles or trains · CPC title