System and method for transmitting information between multiple objects moving at high rates of speed
First Claim
1. A system for transmitting data to a motor vehicle travelling along a roadway in a direction of travel, the motor vehicle having an antenna which produces a magnetic field having a length (L) in the direction of travel and a width (W) perpendicular to the direction of travel, the system comprising:
- a first plurality of low frequency RFID transponders placed within a roadway and positioned in a first row which is perpendicular to the direction of travel, each transponder having data to be transferred to the motor vehicle;
a second plurality of low frequency RFID transponders placed within a roadway and positioned in a second row which is perpendicular to the direction of travel, each transponder having data to be transferred to the motor vehicle;
where the second row is placed at distance (D) from the first row, where D is measured in a direction parallel to the direction of travel; and
where the second row is offset from the first row.
1 Assignment
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Accused Products
Abstract
Provided herein is a system for transmitting data to a motor vehicle travelling along a roadway. The motor vehicle preferably contains an antenna which produces a magnetic field having a length (L) in the direction of travel and a width (W) perpendicular to the direction of travel. A first plurality of RFID transponders may be positioned in the roadway as a row which is perpendicular to the direction of travel. A second plurality of RFID transponders may be positioned following the first row and offset from the first row. Depending on the speed of the vehicles travelling the roadway at this location, more rows of transponders may be used. A method for placing the RFID transponders within the roadway is also disclosed.
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Citations
19 Claims
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1. A system for transmitting data to a motor vehicle travelling along a roadway in a direction of travel, the motor vehicle having an antenna which produces a magnetic field having a length (L) in the direction of travel and a width (W) perpendicular to the direction of travel, the system comprising:
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a first plurality of low frequency RFID transponders placed within a roadway and positioned in a first row which is perpendicular to the direction of travel, each transponder having data to be transferred to the motor vehicle; a second plurality of low frequency RFID transponders placed within a roadway and positioned in a second row which is perpendicular to the direction of travel, each transponder having data to be transferred to the motor vehicle; where the second row is placed at distance (D) from the first row, where D is measured in a direction parallel to the direction of travel; and where the second row is offset from the first row. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for transmitting data to a motor vehicle travelling along a roadway in a direction of travel, the motor vehicle having an antenna which produces a magnetic field having a length (L) in the direction of travel and a width (W) perpendicular to the direction of travel, the system comprising:
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an activation zone within the roadway comprising a plurality of low frequency RFID transponders placed within the roadway, each transponder having control data to be transferred to the motor vehicle; a stretch of roadway following the activation zone where the motor vehicle operates based on the control data; and a deactivation zone following the stretch of roadway and comprising a plurality of low frequency RFID transponders placed within the roadway, each transponder having release data to be transferred to the motor vehicle, releasing control of the motor vehicle. - View Dependent Claims (15, 16, 17)
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18. A method for placing low frequency RFID transponders in a roadway for data transmission to a motor vehicle, the method comprising the steps of:
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(1) selecting a portion of the roadway for placing the RFID transponders; (2) determining the maximum speed attainable by the motor vehicle at the selected portion of roadway; (3) determining the dimensions of a magnetic field emanating from the motor vehicle, producing a length (L) in the direction of motor vehicle travel and a width (W) in a direction perpendicular to the vehicle travel; (4) determining how many transponders the motor vehicle must pass over to read at least two redundant sets of data, based on the result of step (2); (5) placing a first row of transponders across the roadway, oriented in a direction perpendicular to the direction of travel, where each transponder within the row is spaced at least W from one another; (6) placing a second row of transponders across the roadway, oriented in a direction perpendicular to the direction of travel, where each transponder within the row is spaced at least W from one another, and where the second row is placed at least L from the first row, measured in the direction of vehicle travel, and where the second row is offset from the first row in a direction perpendicular to the vehicle travel. - View Dependent Claims (19)
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Specification