Incursion collision avoidance system for vehicle traffic control
First Claim
1. An airport incursion collision avoidance system to assist with avoiding collisions in a restricted movement area traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering said restricted movement area, comprising:
- a transmitter that generates a low-frequency warning signal having a frequency in the range from about 3 kHz to about 30 kHz,a cable that is coupled to said transmitter and buried at a distance outside of a perimeter said restricted movement area traversed by both airplanes and ground traffic vehicles that include vehicles that require clearance from an air traffic control tower before entering said restricted movement area, said cable radiating said warning signala receiver in each of said vehicles, each of said receivers receiving said radiated warning signal in response to said respective vehicle passing over said buried cable and before said respective vehicle passes into said restricted movement area,an alarm in each of said vehicles producing an advance warning in response to receipt of said warning signal by said receiver to alert a vehicle operator of said restricted movement area.
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Abstract
A system to identify junctions of restricted areas to approaching vehicles, including at least one warning signal generator adapted to transmit the warning signal into areas traversed by the vehicles approaching the restricted areas, a receiver in each of the vehicles receiving the transmitted warning signals when the vehicle approaches one of the restricted areas, and an alarm responsive to the warning signal, which produces an alarm signal detectable by a vehicle operator.
27 Citations
20 Claims
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1. An airport incursion collision avoidance system to assist with avoiding collisions in a restricted movement area traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering said restricted movement area, comprising:
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a transmitter that generates a low-frequency warning signal having a frequency in the range from about 3 kHz to about 30 kHz, a cable that is coupled to said transmitter and buried at a distance outside of a perimeter said restricted movement area traversed by both airplanes and ground traffic vehicles that include vehicles that require clearance from an air traffic control tower before entering said restricted movement area, said cable radiating said warning signal a receiver in each of said vehicles, each of said receivers receiving said radiated warning signal in response to said respective vehicle passing over said buried cable and before said respective vehicle passes into said restricted movement area, an alarm in each of said vehicles producing an advance warning in response to receipt of said warning signal by said receiver to alert a vehicle operator of said restricted movement area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of avoiding collisions in a restricted movement area of an airport traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering such restricted movement areas, comprising:
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generating a low-frequency warning signal, radiating said warning signal into a selected area traversed by said vehicles approaching one of said restricted movement area traversed by both airplanes and ground traffic vehicles that include vehicles that require clearance from an air traffic control tower before entering such restricted movement area, said warning signal being radiated from a cable buried around the perimeter of said selected area, in response to one of said vehicles being proximate to said buried cable and before said one of said vehicles enters said restricted movement area, receiving said radiated warning signal with a receiver in said one of said vehicles, and in response to receiving said radiated warning signal, alerting a vehicle operator of said restricted movement area with an advance warning alarm so that said vehicle operator can avoid said restricted movement area. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of avoiding collisions in restricted movement areas of an airport traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering said restricted movement areas, comprising
generating a low-frequency warning signal having a frequency in the range from about 3 kHz to about 30 kHz, transmitting said warning signal through a buried inductive cable extending around at least a portion of a selected area traversed by said vehicles approaching one of said restricted movement areas, said warning signal radiating upwardly from the ground into said selected area so as to alert said vehicles of said one of said restricted movement areas, in response to one of said vehicles being proximate to said buried inductive cable and before entering said one of said restricted movement areas, receiving said radiated warning signal in said one of said vehicles, and activating an advance warning alarm in response to receiving said warning signal so as to alert the vehicle operator before said one of said vehicles enters said one of said restricted movement area.
Specification