Method of determining car position

Details Method of determining car position Method of determining car position

1996-05-24

1999-11-16

Crosland, Donnie L.

Communications: electrical

Vehicle detectors

34082505, 34082506, 340531, 34031001, 246 1C, 246 6, 246122R, 246167R, 104 8803, 701 19, G08G 101, B61L 300

Patent

active

059865776

ABSTRACT:
A system and method for determining the position of each railroad vehicle within a train consist. The train consist includes a locomotive, at least one trainline and at least one railroad vehicle. The locomotive has a computer. The at least one trainline has a power line for supplying power to the computer and to each railroad vehicle. The system includes the computer as programmed, a vehicle computing device incorporated into each railroad vehicle, and the at least one trainline interconnecting the computer with each vehicle computing device. Each vehicle computing device contains a unique identification code. Each vehicle computing device can apply to and sense from the power line an electrical signal. The computer via the program commands sequentially each vehicle computing device, via the identification codes, to so apply the electrical signal. Each time the computer so commands one of the vehicle computing devices, all of the other vehicle computing devices located between the locomotive and the vehicle computing device which applied the electrical signal sense the electrical signal. All of the other vehicle computing devices that sensed the electrical signal then respond to the computer, via the at least one trainline, that the electrical signal was sensed. The computer, after having commanded all of the vehicle computing devices and having received the responses therefrom, automatically determines the position of each railroad vehicle relative to all other railroad vehicles within the train consist.

REFERENCES:
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patent: 4041470 (1977-08-01), Slane et al.
patent: 4689602 (1987-08-01), Morihara et al.
patent: 4702291 (1987-10-01), Engle
patent: 4825189 (1989-04-01), Honma et al.
patent: 5168273 (1992-12-01), Solomon
patent: 5651517 (1997-07-01), Stevens et al.

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