G - Physics – 08 – C
Patent
G - Physics
08
C
G08C 17/02 (2006.01) B60T 13/66 (2006.01) B61L 15/00 (2006.01) H04B 7/00 (2006.01) H04L 12/56 (2006.01)
Patent
CA 2214682
A radio-based, Electro-Pneumatic (EP) rail car braking system supports both End-of-Train (EOT) and Distributed Power Control (DPC) communication systems. The EP rail car braking system operates within existing frequency allocations and meets operational reliability needs by adopting a hybrid, two-band communications scheme. The EP rail car braking system uses a broadcast band for transmitting commands to all cars in the train. Selected cars spaced through the train are designated as repeaters, and a predetermined number of cars are assigned to each repeater for forming a group of cars that act as a Local Area Network (LAN). The cars in a group communicate with each other using a low power, spread spectrum band. In response to a command broadcast by a lead locomotive, cars in a group act on the command and transmit status information to their repeater car. The repeater car, in turn, sends back status messages to the lead locomotive on the broadcast band based on consolidation of data received from the cars in its group.
Macrae & Co.
Westinghouse Air Brake Company
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