The structure of the system is divided into five levels, namely, clearing center, line central computer, station computer, terminal equipment and ticket card. The hierarchical structure is divided in accordance with the principles of fully closed operation, based on the mode of fare collection and the use of non-contact IC cards as the ticket medium, and according to the respective functions, management functions and locations of the equipment and subsystems at each level, which can greatly help metro customers improve the efficiency of metro operation, serve metro management personnel, and greatly enhance the efficiency of passage and the passage experience of the passengers.

The whole process of rail transportation ticketing, checking, billing, charging, statistics, clearing and management.

Computer, communication, network, automatic control and other technologies.