Method and device for determining the state of travel of a vehicle
First Claim
1. A method for determining the state of travel, whether stationary or moving along, of a vehicle (3), characterized in that it consists in equipping at least one of the wheels (2) of said vehicle with a magnetic sensor (4;
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4′
) having an axis of maximum sensitivity (S4), and;
in measuring a signal at the terminals of the magnetic sensor (4;
4′
) so as to deliver a signal representative of the variations in the values of the magnetic field as detected by said magnetic sensor, and in providing either information that the vehicle is stationary if there are no variations in the signal delivered, or information that the vehicle is moving along when there is a cyclic variation in said signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A method and a device for determining the state of travel, whether stationary or moving along, of a vehicle. The method includes equipping at least one wheel (2) with a magnetic sensor (4) having an axis of maximum sensitivity, measuring a signal at the terminals of the magnetic sensor (4) so as to deliver a signal representative of the variations in the values of the magnetic field as detected by the magnetic sensor, and in providing either information that the vehicle is stationary if there are no variations in the signal delivered, or information that the vehicle is moving along when there is a cyclic variation in the signal.
25 Citations
13 Claims
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1. A method for determining the state of travel, whether stationary or moving along, of a vehicle (3), characterized in that it consists in equipping at least one of the wheels (2) of said vehicle with a magnetic sensor (4;
-
4′
) having an axis of maximum sensitivity (S4), and;
in measuring a signal at the terminals of the magnetic sensor (4;
4′
) so as to deliver a signal representative of the variations in the values of the magnetic field as detected by said magnetic sensor,and in providing either information that the vehicle is stationary if there are no variations in the signal delivered, or information that the vehicle is moving along when there is a cyclic variation in said signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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4′
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8. A device for determining the state of travel, whether stationary or moving along, of a vehicle (3), characterized in that it comprises, mounted on at least one of the wheels (2) of said vehicle:
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a magnetic sensor (4;
4′
) having an axis of maximum sensitivity (S4),means (6, 7) for measuring a signal at the terminals of the magnetic sensor (4), these means being able to deliver a signal representative of the variations in the values of the magnetic field as detected by said magnetic sensor, and a calculation unit (8) programmed to provide information that the vehicle is stationary if there are no variations in the signal delivered by the measurement means (6, 7), and information that the vehicle is moving along when there is a cyclic variation in said signal. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification