Railway switches and signals – Cab signal or train control – Motive-power control
Patent
1996-12-20
1997-10-28
Morano, S. Joseph
Railway switches and signals
Cab signal or train control
Motive-power control
246167R, 246182B, 36442605, B61C 1712
Patent
active
056810156
ABSTRACT:
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 form 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.
REFERENCES:
patent: 5039038 (1991-08-01), Nichols et al.
patent: 5053964 (1991-10-01), Mister et al.
patent: 5374015 (1994-12-01), Bezos et al.
patent: 5377938 (1995-01-01), Bezos et al.
patent: 5570284 (1996-10-01), Roselli et al.
Morano S. Joseph
Westinghouse Air Brake Company
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