Train control method and system based on combined coordinate system, and controller

A controller, configured to perform operations based on a combined coordinate system, wherein the operations comprise:

• obtaining a target combined coordinate system corresponding to a planned train path, the target combined coordinate system comprising a plurality of basic coordinate systems with boundary logic sections, and each of the basic coordinate systems forming a physical link relationship with another basic coordinate system of the basic coordinate systems through the boundary logic sections;
• obtaining position information of a train located in the planned train path sent by the train, and determining preceding train information of a preceding train preceding to the train based on the position information and the physical link relationships between the basic coordinate systems by:
• determining an upward combined coordinate system or a downward combined coordinate system matching a traveling direction of the train as a matching combined coordinate system of the train;
• recording a basic coordinate system where a first logic section corresponding to the train is located in the matching combined coordinate system as a current coordinate system of the train;
• determining a search range of the train based on position information of the current coordinate system and a physical link relationship of the current coordinate system;
• and
• searching within the search range to determine the preceding train information of the preceding train;
• and
• performing a train control strategy on the train based on the preceding train information.

A train control system, comprising a controller connected to a vehicle on-board controller (VOBC) of a train, the controller configured to perform operations based on a combined coordinate system, wherein the operations comprise:

• obtaining a target combined coordinate system corresponding to a planned train path, the target combined coordinate system comprising a plurality of basic coordinate systems with boundary logic sections, and each of the basic coordinate systems forming a physical link relationship with another basic coordinate system of the basic coordinate systems through the boundary logic sections;
• obtaining position information of a train located in the planned train path sent by the train, and determining preceding train information of a preceding train preceding to the train based on the position information and the physical link relationships between the basic coordinate systems by:
• determining an upward combined coordinate system or a downward combined coordinate system matching a traveling direction of the train as a matching combined coordinate system of the train;
• recording a basic coordinate system where a first logic section corresponding to the train is located in the matching combined coordinate system as a current coordinate system of the train;
• determining a search range of the train based on position information of the current coordinate system and a physical link relationship of the current coordinate system;
• and
• searching within the search range to determine the preceding train information of the preceding train;
• and
• performing a train control strategy on the train based on the preceding train information.