Signaling safety system

Details Signaling safety system Signaling safety system

2007-04-10

2007-04-10

Le, Mark T. (Department: 3617)

Railway switches and signals

Train-position indication

Miniature model

C246S18200B, C246S003000, C246S004000, C707S793000, C707S793000

Reexamination Certificate

active

10921167

ABSTRACT:
A signaling safety system includes transmitter-receiver units for ground-train communication by radio in regular safety operation mode, using a base station and an antenna. The position of each train car is communicated from the cars to a ground train controller which detects the presence of a train on-rail. Based on the latter information, information is transmitted from the controller to each of the cars regarding corresponding speed limits. In addition to such radio transmitter-receivers, the signaling safety system also includes additional communication devices, such that, when each of the cars approaches a specific range, car information from each of the cars can be received by the controller, by communication between ground communication devices and an on-train communication device which are installed so as to communicate with each other. Concurrently with the regular safety operation, by the alternative safety system, the presence on-rail of each of the cars is controlled for each new block section. When ground-train communication by radio fails, the controller switches to operation by the alternative safety system so that safe operation of the train can be continued.

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