Automatic train serialization utilizing comparison between a mea

Details Automatic train serialization utilizing comparison between a mea Automatic train serialization utilizing comparison between a mea

1996-01-11

1997-07-29

Morano, S. Joseph

Railway switches and signals

Train dispatching

Spacing

246 4, 246 2E, 246167R, 246122R, B61L 2500

Patent

active

056515170

ABSTRACT:
A method of serialization including providing a parameter which varies along the length of the train and transmitting a synchronization signal along the length of the train to the local nodes at each car. The parameter is measured at each node with respect to the occurrence of the synchronization signal at the node. Serialization of the cars is then performed as a function of the measured parameters. One method is to provide the parameters by transmitting a serial signal which propagates through the train at a slower rate than the synchronization signal and then measuring the difference in time between the receipt of the synchronization and the serial signal at each node. A second method of implementation is to create a pressure gradient in the brake pipe along the length of the train. The brake pipe pressure or flow rate is read at each node upon receipt of the synchronization signal. As a third alternative, an electric load is provided at each node in parallel to a trainline running through the train. The current or voltage of the trainline at each node is then measured upon receipt of the synchronization signal.

REFERENCES:
patent: 3721820 (1973-03-01), Caulier et al.
patent: 4689602 (1987-08-01), Morihara et al.
patent: 4702291 (1987-10-01), Engle
patent: 4825189 (1989-04-01), Honma et al.
A Breakthrough in Trainline Communications, by G.B. Anderson and H.G. Moody, Association of American Railroads for Railway Age, Aug., 1995.

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