H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/22 (2006.01) B64F 1/18 (2006.01) G08G 5/06 (2006.01) H04B 10/10 (2006.01)
Patent
CA 2114482
Abstract of the Disclosure An infrared vehicle identification system comprising a microprocessor controlled infrared (IR) transmitter located on an aircraft nose wheel landing strut and an infrared receiver including a microprocessor enclosed in a plurality of edge light assemblies located along surface pathways of an airport including runways and taxiways. The infrared transmitter comprises an array of light emitting diodes (LEDs) arranged in a semicircle within the horizontal plane. The transmitter emits a plurality of fields of encoded data to provide vehicle identification and position information. One field comprises a steady stream of pulses that allows the IR receiver to calculate the baud rate of the transmitter and automatically adjust its internal timing. The other fields include a unique word for marking the beginning of a message, the number of characters in the message, the vehicle identification number, the vehicle position and a checksum. The latter assures that a complete and correct message has been received. If the transmitted message is interrupted for any reason, the checksum will detect it and the messages will be voided. The IR receiver relays a valid message of vehicle identification and position to a central computer system at the airport control tower via the edge light assembly power wiring.
Raytheon Company
Smart & Biggar
LandOfFree
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