Method and device for locating the position, on the right or on the left, of a wheel of a vehicle
First Claim
1. A device for locating the position, on the right or on the left, of a wheel (2) of a vehicle (3), comprising:
- two magnetic sensors (4, 5) having axes of maximum sensitivity (S4, S5) lying in a plane that is intersecting to the axis of rotation (R) of the wheel (2) and which axes are offset from one another in the intersecting plane by a predetermined angle θ
, the two magnetic sensors mounted on said wheel and configured to detect and provide, at terminals of each of the sensors, a signal representative of variations in values of a magnetic field,means (7, 8) for measuring the signal at the terminals of each of the magnetic sensors (4, 5), the measuring means being able to deliver two periodic signals phase-shifted from one another by an angular value equal to (+ or −
) θ
, each of the two periodic signals representative of the variations in the values of the magnetic field as detected by said magnetic sensors during a revolution of the wheel (2), anda calculation unit (9) programmed to determine, from the phase shift between the two periodic signals, the direction of rotation of the wheel (2) and, from this direction of rotation and from the direction of travel of the vehicle (3), to deduce the location, on the right or on the left side of the vehicle, of the wheel (2).
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Accused Products
Abstract
A method and device for locating the position, on the right or on the left, of a vehicle wheel. The wheel is equipped with two magnetic sensors having axes of maximum sensitivity lying in a plane that is secant to the axis of rotation of the wheel and which are offset from one another in this secant plane by a predetermined angle θ. As the vehicle moves in a given travel direction, a signal generated by the variation in a magnetic field is measured at the terminals of each of the magnetic sensors to deliver two periodic signals phase-shifted from one another by an angular value equal to (+ or −) θ, this phase shift is used to determine the direction of wheel rotation, and from such direction and the travel direction, the location, on the right or on the left, of the wheel is deduced.
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Citations
17 Claims
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1. A device for locating the position, on the right or on the left, of a wheel (2) of a vehicle (3), comprising:
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two magnetic sensors (4, 5) having axes of maximum sensitivity (S4, S5) lying in a plane that is intersecting to the axis of rotation (R) of the wheel (2) and which axes are offset from one another in the intersecting plane by a predetermined angle θ
, the two magnetic sensors mounted on said wheel and configured to detect and provide, at terminals of each of the sensors, a signal representative of variations in values of a magnetic field,means (7, 8) for measuring the signal at the terminals of each of the magnetic sensors (4, 5), the measuring means being able to deliver two periodic signals phase-shifted from one another by an angular value equal to (+ or −
) θ
, each of the two periodic signals representative of the variations in the values of the magnetic field as detected by said magnetic sensors during a revolution of the wheel (2), anda calculation unit (9) programmed to determine, from the phase shift between the two periodic signals, the direction of rotation of the wheel (2) and, from this direction of rotation and from the direction of travel of the vehicle (3), to deduce the location, on the right or on the left side of the vehicle, of the wheel (2). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification