Incursion collision avoidance system for vehicle traffic control
First Claim
Patent Images
1. A method of avoiding collisions in a restricted movement area of an airport traversed by both airplanes moving on the ground and ground traffic vehicles, comprising:
- generating a low-frequency warning signal;
radiating said warning signal into a selected area traversed by said ground traffic vehicles approaching said restricted movement area, said selected area being near said restricted movement area, said warning signal being radiated from a cable buried in the ground; and
in response to one of said ground traffic vehicles being proximate to said buried cable and before said one of said ground traffic vehicles enters said restricted movement area, receiving said radiated warning signal with a receiver in said one of said ground traffic vehicles so as to alert a vehicle operator to restrict a movement of said one of said ground traffic vehicles into 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.
24 Citations
20 Claims
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1. A method of avoiding collisions in a restricted movement area of an airport traversed by both airplanes moving on the ground and ground traffic vehicles, comprising:
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generating a low-frequency warning signal; radiating said warning signal into a selected area traversed by said ground traffic vehicles approaching said restricted movement area, said selected area being near said restricted movement area, said warning signal being radiated from a cable buried in the ground; and in response to one of said ground traffic vehicles being proximate to said buried cable and before said one of said ground traffic vehicles enters said restricted movement area, receiving said radiated warning signal with a receiver in said one of said ground traffic vehicles so as to alert a vehicle operator to restrict a movement of said one of said ground traffic vehicles into said restricted movement area. - View Dependent Claims (2, 3, 4, 5)
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6. A method of avoiding collisions in a restricted movement area of an airport traversed by both airplanes moving on the ground and ground traffic vehicles, comprising:
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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 cable extending around at least a portion of a selected area traversed by said vehicles approaching said restricted movement area, said warning signal continuously radiating upwardly from the ground into said selected area and being independent of a location of said vehicle within said selected area; and in response to one of said vehicles being proximate to said buried cable and before said one of said vehicles enters said restricted movement areas, receiving said radiated warning signal in said one of said vehicles to alert a vehicle operator of said restricted movement area. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of avoiding collisions in a restricted movement area of an airport traversed by both airplanes and ground traffic vehicles, said restricted movement area containing an airport runway, said method comprising:
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in response to said airport runway being in an operational state, generating a warning signal from a cable buried within the ground; radiating said warning signal upwardly from said ground and into a selected area traversed by said vehicles approaching said restricted movement area, said selected area being outside of said restricted movement area; and alerting the vehicle operator of a first vehicle of said restricted movement area in response to said warning signal being received when said first vehicle is in said selected area, said alerting including activating an advance warning alarm that instructs the vehicle operator to restrict movement of said first vehicle into said restricted movement area. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification