Method and system for autonomous vehicles
First Claim
Patent Images
1. A method for limiting a vehicle'"'"'s lane departure, comprising:
- providing a vehicle lane departure system having a magnetic sensor adapted to detect a magnetic signal, said magnetic sensor positioned on one of a tire and a wheel of a vehicle to detect magnetic fields from magnetic road markers positioned on a road, said magnetic road markers comprising pavement marking material applied to a roadway surface;
said pavement marking material adapted to reflect at least two of the following signals;
visible light, laser from a lidar; and
a radar signal;
said magnetic road markers presenting a magnetic signal and adapted to be positioned substantially on both a lane edge of a vehicle lane on a roadway and in the center of the roadway;
said magnetic road markers including one or more rare earth magnetic components and at least one or more RFID tags;
detecting said magnetic signals emanating from said magnetic sensor; and
detecting the one or more RFID tags by using an RFID tag reader associated with the vehicle.
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Abstract
A method and system for facilitating cost effective, reliable, system redundant, self-driving vehicles involves the employment of specialized lane marking components that permit unprecedented sensor feedback, and in particular, a system and method that enables accurate lane marking recognition despite adverse weather conditions, which presently pose problems experienced by self-driving systems that rely upon vision based camera systems.
115 Citations
22 Claims
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1. A method for limiting a vehicle'"'"'s lane departure, comprising:
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providing a vehicle lane departure system having a magnetic sensor adapted to detect a magnetic signal, said magnetic sensor positioned on one of a tire and a wheel of a vehicle to detect magnetic fields from magnetic road markers positioned on a road, said magnetic road markers comprising pavement marking material applied to a roadway surface;
said pavement marking material adapted to reflect at least two of the following signals;
visible light, laser from a lidar; and
a radar signal;
said magnetic road markers presenting a magnetic signal and adapted to be positioned substantially on both a lane edge of a vehicle lane on a roadway and in the center of the roadway;
said magnetic road markers including one or more rare earth magnetic components and at least one or more RFID tags;detecting said magnetic signals emanating from said magnetic sensor; and
detecting the one or more RFID tags by using an RFID tag reader associated with the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for limiting a vehicle'"'"'s lane departure, comprising:
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detecting, using a magnetic sensor, magnetic signals emanating from magnetic road markers positioned on a road, said magnetic road markers comprising pavement marking material applied to a roadway surface;
said pavement marking material adapted to reflect at least two of the following signals;
visible light, laser from a lidar; and
a radar signal;
said magnetic road markers presenting a magnetic signal and adapted to be positioned substantially on both a lane edge of a vehicle lane on a roadway and in the center of the roadway;
said magnetic road markers including one or more rare earth magnetic components and at least one or more RFID tags, said magnetic road markers comprising a raised pavement marking material that includes a top surface and a bottom surface opposite the top surface, two opposing angled side surfaces adjacent the top surface and bottom surface, with said one or more rare earth magnetic components on one angled side and an RFID tag on the other angled side; anddetecting the at least one or more RFID tags using an RFID tag reader associated with the vehicle, said RFID tag reader and said magnetic sensor being positioned on one of a tire and a wheel of the vehicle.
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22. A method for limiting a vehicle'"'"'s lane departure, comprising:
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providing a vehicle lane departure system having a magnetic sensor adapted to detect a magnetic signal, said magnetic sensor positioned on one of a tire and a wheel of a vehicle to detect magnetic fields from magnetic road markers positioned on a road, said magnetic road markers comprising pavement marking material applied to a roadway surface;
said pavement marking material adapted to reflect at least two of the following signals;
visible light, laser from a lidar; and
a radar signal;
said magnetic road markers presenting a magnetic signal and adapted to be positioned substantially on both a lane edge of a vehicle lane on a roadway and in the center of the roadway;
said magnetic road markers including one or more rare earth magnetic components and at least one or more RFID tags;detecting said magnetic signals emanating from said magnetic sensor; and
detecting the one or more RFID tags by using an RFID tag reader associated with the vehicle; and
wherein said lane departure system comprises an electronic system integrated within a tire structure that employs piezoelectric technology to convert mechanical strains associated with tire flexure to an electric charge sufficient to power a radio frequency transmission device.
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Specification