Tire tread detection and measurement of physical variables of a tire on a moving vehicle
First Claim
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1. A tire tread sensing system, comprising:
- a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread, wherein the magnetic field source is not embedded in the tire tread; and
a magnetic field sensor configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, wherein the magnetic field strength is indicative of a tire tread depth.
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Abstract
A tire tread sensing system includes a magnetic field sensor and a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread. The magnetic field sensor is configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, and the magnetic field strength is indicative of a tire tread depth. Alternatively, the particles comprise alternating permanent magnets embedded in a tread portion of a tire.
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Citations
19 Claims
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1. A tire tread sensing system, comprising:
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a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread, wherein the magnetic field source is not embedded in the tire tread; and a magnetic field sensor configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, wherein the magnetic field strength is indicative of a tire tread depth. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire tread sensing system, comprising:
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means for magnetizing magnetizable particles embedded in a tire tread, wherein the means for magnetizing is not embedded in the tire tread; and magnetic field sensing means for sensing a magnetic field contribution of the magnetizable particles embedded in the tire tread, wherein the magnetic field contribution is indicative of a tire tread depth. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of measuring tire tread depth on a moving vehicle, comprising:
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sensing a magnetic field contribution associated with selectively magnetizable particles embedded in a tire tread; and ascertaining a tire tread depth based on the sensed magnetic field contribution. - View Dependent Claims (15, 16, 17)
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18. A tire tread sensing system, comprising:
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a plurality of permanent magnets configured to be embedded in a tire tread; a magnetic field sensor configured to measure a magnetic field strength associated with the permanent magnets, wherein the magnetic field strength is indicative of a tire tread depth, and wherein the magnetic field sensor comprises a plurality of magnetic field sensors configured to measure a magnetic field strength at a plurality of locations across a transverse cross section of a tire; and a controller configured to ascertain whether a tire tread wear is uneven across the transverse cross section of the tire based on the magnetic field strengths from the plurality of magnetic field sensors. - View Dependent Claims (19)
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Specification