Device for monitoring the tires of a vehicle with electromagnetically coupled antennas
First Claim
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1. Device for monitoring the tires of a vehicle, comprising a central unit and for each wheel:
- a measurement sensor attached mechanically to the wheel;
a rotating antenna connected galvanically to the measurement sensor, firmly attached to the wheel, and integrated with the measurement sensor in a single small box;
a stationary antenna firmly attached to a spindle of said wheel, and connected electrically to the central unit; and
a closed circular strip-iron coupling ring coaxial with the wheel and placed opposite said stationary antenna and said rotating antenna such that any variation of magnetic flow produced by one of said antennas leads to the appearance of an electrical current in said coupling ring, and vice versa;
the central unit supplying energy to said sensors and analyzing measurement signals of said sensors.
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Abstract
Device for monitoring the tires of a vehicle, comprised of a central unit d for each wheel a measurement sensor, a rotating antenna, a stationary antenna, and metallic parts of electromagnetic coupling placed in the environment of the wheel, the hub, and the spindle.
63 Citations
7 Claims
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1. Device for monitoring the tires of a vehicle, comprising a central unit and for each wheel:
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a measurement sensor attached mechanically to the wheel; a rotating antenna connected galvanically to the measurement sensor, firmly attached to the wheel, and integrated with the measurement sensor in a single small box; a stationary antenna firmly attached to a spindle of said wheel, and connected electrically to the central unit; and a closed circular strip-iron coupling ring coaxial with the wheel and placed opposite said stationary antenna and said rotating antenna such that any variation of magnetic flow produced by one of said antennas leads to the appearance of an electrical current in said coupling ring, and vice versa; the central unit supplying energy to said sensors and analyzing measurement signals of said sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification