Method for determining the position of a vehicle on a road
First Claim
1. A method for determining the position of a vehicle, comprising the steps of:
- transmitting a data signal from an on-board unit (OBU) of the vehicle to a first beacon, the vehicle being in a first communications zone of a short-range transmitting/receiving field of the first beacon;
determining a first velocity of the vehicle relative to the first beacon as a function of the transmitted data signal;
arranging at least one second beacon in a region of the vehicle, the at least one second beacon being separate from the first beacon and having a second communications zone of a short-range transmitting/receiving field which at least one second beacon and the vehicle at least partially superimposes the first communications zone;
determining a second velocity of the vehicle relative to the at least one second beacon as a function of the transmitted data signal;
determining a position of the vehicle as a function of a ratio of the first velocity and the second velocity; and
targeting data transmission to the vehicle in the determined position.
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Accused Products
Abstract
According to the present invention, a method is proposed for determining the position of a vehicle, in which the vehicle performs a data transmission in the short-range field of at least one beacon. By means of data transmission with at least two or three beacons, an assignment of data transmission and vehicle position within a communications zone can be made. Relative velocities of the vehicle are determined from the data transmission signals sent by the vehicle and received by the beacons, in each instance. The lane or the position of the vehicle sending the data is determined from the velocity ratio or from several velocity ratios. A preferred use is intended to be electronic collection of road use fees or checking of road access entitlement.
17 Citations
12 Claims
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1. A method for determining the position of a vehicle, comprising the steps of:
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transmitting a data signal from an on-board unit (OBU) of the vehicle to a first beacon, the vehicle being in a first communications zone of a short-range transmitting/receiving field of the first beacon; determining a first velocity of the vehicle relative to the first beacon as a function of the transmitted data signal; arranging at least one second beacon in a region of the vehicle, the at least one second beacon being separate from the first beacon and having a second communications zone of a short-range transmitting/receiving field which at least one second beacon and the vehicle at least partially superimposes the first communications zone; determining a second velocity of the vehicle relative to the at least one second beacon as a function of the transmitted data signal; determining a position of the vehicle as a function of a ratio of the first velocity and the second velocity; and targeting data transmission to the vehicle in the determined position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification