Rail transit door system network architecture and network communication method

The invention discloses a rail transit door system network architecture and a network communication method, all door control units in a door system are in chain connection, the head door control unit and the tail door control unit are connected to a real-time Ethernet switch to form a ring network topology, and interaction of control information and maintenance information is completed; the gating unit and the two real-time Ethernet switches form two outer network planes respectively, and the two outer network planes are redundant to each other; the real-time Ethernet switch is connected with the TCMS, and all the door control units are in direct communication with the TCMS. The DCU is standardized, the master DCU and the slave DCU do not need to be distinguished, and the DCU can directly communicate with the TCMS; the network architecture has ring network redundancy, link redundancy and bypass relay technologies, two-point faults can be prevented, and the reliability is high. 本发明公开了一种轨道交通门系统网络架构及网络通信方法，门系统内所