| 摘要 |
The present invention relates to a communication control system in a train, which is installed in the train running with multiple passenger cars to provide guide information to passengers in the passenger cars. The communication control system comprises: a first central control device transmitting a data signal for controlling output devices in the passenger cars; a communication line arranged in ring shape along the multiple passenger cars that are connected in a row, through which the data signal communicates; multiple switches performing as hubs drawing out branch lines from the communication line, confirming a mutual communication state by communicating with a different switch, and having a switching module for forwarding or blocking the data signal according to the confirmed communication state; and a passenger car control device processing the data signal received through the branch lines and delivering the data signal to the output devices. [Reference numerals] (21,22) First central control device; (32,FF,JJ,NN) Second passenger car control device; (41) Switch 1; (42) Switch 2; (43) Switch 3; (44) Switch 4; (45) Switch 5; (46) Switch 6; (47) Switch 7; (48) Switch 8; (AA,PP) Optical cable; (BB,OO) UTP, Digital I/O; (CC,GG,KK,31) First passenger car control device; (DD,HH,LL,50,EE,ll,MM,50') Output device; (QQ) Serial interface, M/S line, RS-485 |
