Vehicle locating unit proof of life subsystem and method

Vehicle locating unit proof of life subsystem and method

A vehicle locating unit features a receiver which receives a signal from a network of communication sources and a transponder activated when a communication source sends a message to the receiver. There is a transmitter for sending signals to the communication sources and a proof of life subsystem c...

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Bibliographische Detailangaben
Hauptverfasser: CREWE, PHILIP GRAHAME, WATSON, NIGEL JAMES, STROUD, IAN CHRISTOPHER, HOWE, TIMOTHY DAVID, RHODES, JESSE, CLETHEROE, DANIEL JONTHAN FINCHLEY, SMITH, GERARD EDWARD, MARSDEN, MARK, KRISHNA, SAMPATH, NGUYEN, SON, ROMANO, FRANK, GREENDALE, STEVEN WALTER
Format: Patent
Sprache:eng
Schlagworte:
PHYSICS
SIGNALLING
TRAFFIC CONTROL SYSTEMS
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Beschreibung
Zusammenfassung:A vehicle locating unit features a receiver which receives a signal from a network of communication sources and a transponder activated when a communication source sends a message to the receiver. There is a transmitter for sending signals to the communication sources and a proof of life subsystem configured to periodically send a proof of life message via the transmitter to the communication sources.