Incursion collision avoidance system for vehicle traffic control
First Claim
1. An airport incursion collision avoidance system to avoid collisions in a restricted movement area that includes an airport runway, said restricted movement area being traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering such restricted movement areas, comprising;
- a transmitter that generates a low-frequency warning signal,a controller coupled to said transmitter for switching said transmitter between an on-state and an off-state based on an operational state of said airport runway,an antenna in communication with said transmitter to transmit said warning signal into areas traversed by said vehicles approaching said restricted movement area when said transmitter is in said on-state, said antenna including an inductive cable buried in the ground, said inductive cable being at a known distance outside of said restricted movement area, said low-frequency warning signal being continuously radiated from said inductive cable during said on-state, anda receiver in each of said vehicles to receive said transmitted warning signals when said vehicle approaches one of said restricted movement areas, said receiver further including an advance warning alarm that is responsive to said warning signal to alert the vehicle operator of said restricted movement area before said vehicle enters 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, at least one antenna coupled to the generator transmitting 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.
37 Citations
33 Claims
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1. An airport incursion collision avoidance system to avoid collisions in a restricted movement area that includes an airport runway, said restricted movement area being 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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a transmitter that generates a low-frequency warning signal, a controller coupled to said transmitter for switching said transmitter between an on-state and an off-state based on an operational state of said airport runway, an antenna in communication with said transmitter to transmit said warning signal into areas traversed by said vehicles approaching said restricted movement area when said transmitter is in said on-state, said antenna including an inductive cable buried in the ground, said inductive cable being at a known distance outside of said restricted movement area, said low-frequency warning signal being continuously radiated from said inductive cable during said on-state, and a receiver in each of said vehicles to receive said transmitted warning signals when said vehicle approaches one of said restricted movement areas, said receiver further including an advance warning alarm that is responsive to said warning signal to alert the vehicle operator of said restricted movement area before said vehicle enters said restricted movement area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 30, 31, 32, 33)
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10. A method of avoiding collisions in a restricted movement areas area traversed by both airplanes and ground traffic vehicles that require clearance from an air traffic control tower before entering such restricted movement area, 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, continuously 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, receiving said radiated warning signal in each of said vehicles before said vehicle enters said restricted movement area, and alerting the vehicle operator of said restricted movement area in response to said warning signal being received and before said vehicle enters said restricted movement area, said alerting including activating an advance warning alarm. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification