Method and system for remotely detecting a vehicle
First Claim
1. Method for remotely detecting a vehicle positioned in at least one of several adjacent lanes, which lanes are arranged one after the other in a lateral direction, wherein reading antennas are arranged to read received electromagnetic signals received from vehicles, at different lateral reading locations, which method comprises the stepsa) during one and the same time period, measuring an electromagnetic signal received from the vehicle by several of said reading antennas;
- b) determining, for each of said several reading antennas, a respective received electromagnetic signal strength;
c) determining, based upon knowledge about a respective relative geometric position and the said respective determined signal strength of each of the said several reading antennas, a geometric centre of gravity for a first signal strength function, which is the received signal strength as a function of physical lateral position; and
d) detecting the vehicle as present in a lane in which the said geometric centre of gravity lies.
1 Assignment
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Accused Products
Abstract
Method and system for remotely detecting a vehicle positioned in at least one of several possible adjacent lanes, which lanes are arranged one after the other in a lateral direction, wherein reading antennas are arranged to read received electro-magnetic signals received from vehicles, at different lateral reading locations. The method involves measuring an electromagnetic signal received from the vehicle by several of said reading antennas; determining, for each of said several reading antennas, a respective received electromagnetic signal strength; determining, based upon knowledge about a respective relative geometric position and the said respective determined signal strength of each of the said several reading antennas, a geometric center of gravity for a first signal strength function, which is the received signal strength as a function of physical lateral position; and detecting the vehicle as present in a lane in which the said geometric center of gravity lies.
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Citations
14 Claims
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1. Method for remotely detecting a vehicle positioned in at least one of several adjacent lanes, which lanes are arranged one after the other in a lateral direction, wherein reading antennas are arranged to read received electromagnetic signals received from vehicles, at different lateral reading locations, which method comprises the steps
a) during one and the same time period, measuring an electromagnetic signal received from the vehicle by several of said reading antennas; -
b) determining, for each of said several reading antennas, a respective received electromagnetic signal strength; c) determining, based upon knowledge about a respective relative geometric position and the said respective determined signal strength of each of the said several reading antennas, a geometric centre of gravity for a first signal strength function, which is the received signal strength as a function of physical lateral position; and d) detecting the vehicle as present in a lane in which the said geometric centre of gravity lies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. System for remotely detecting a vehicle positioned in at least one of several adjacent lanes, arranged one after the other in a lateral direction, which system comprises reading antennas arranged to read received electromagnetic signals received from vehicles, at different lateral reading locations, wherein the system is arranged to, during one and the same time period, measure an electromagnetic signal received from the vehicle by several of said reading antennas, and wherein the system is arranged to determine, for each of said several reading antennas, a respective received electromagnetic signal strength, wherein the system is arranged to determine, based upon knowledge about a respective relative geometric position and the said respective determined signal strength of each of the said several reading antennas, a geometric centre of gravity for a first signal strength function, which is the received signal strength as a function of physical lateral position, and wherein the system is arranged to detect the vehicle as present in a lane in which the said geometric centre of gravity lies.
Specification