Automatic serialization of an array of wireless nodes based on c

Details Automatic serialization of an array of wireless nodes based on c Automatic serialization of an array of wireless nodes based on c

1998-04-17

2000-11-07

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Railway vehicle

246 6, 246122R, 246167R, G05D 100, G06F 700

Patent

active

061449008

ABSTRACT:
A linking process allows a head-end unit (HEU) of a railroad train to determine the sequence of cars in the train using wireless links between nodes on the cars, and requires no physical connection between the nodes or cars. Each car in the train is equipped with a wireless communication device which models an oscillator i. Each oscillator is phase-variable, the phase .theta..sub.i linearly increasing from 0 to 1 such that, when the i.sup.th oscillator "fires", transmitting a packet, and phase .theta..sub.i then jumps back to zero. When a car receives the transmission of another car, it changes the phase of its oscillator according to a phase-response curve function, setting up a wave pattern of transmission from nodes, from one end of the train to the other end. The wave pattern, along with protocol logic, enables each car to determine the sequence in which cars are arranged in its vicinity. The protocol logic also enables each car to forward or relay this "local map" from all cars to the HEU, allowing the HEU to construct the entire train map which is the sequence of cars in the train. The compiled train map is compared with consist information and the operator is notified of any discrepancy.

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"Basic Adaptive Network Discipline for Information Transfer", Microlink Systems Limited, Upper Kindlestown Hill, Delgany, Co., Wicklow, Republic of Ireland. No date.
Gus Welty, "Electro-Pneumatic Braking: How is now the question", Railway Age, May 1997, pp. 43, 46, 48.

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