Tire sensor for a tire monitoring system
First Claim
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1. A tire wear state estimation system comprising:
- at least one tire supporting a vehicle;
a tri-axial sensor mounted to the tire, the tri-axial sensor measuring tire inflation pressure and generating tire inflation pressure data, measuring tire vertical mode frequency and generating tire vertical mode frequency data, generating tire-specific frequency mode coefficients using tire-specific identification data, and calculating an estimation of a tire wear state based upon the tire inflation pressure data, the vertical mode frequency data, and the tire-specific frequency mode coefficients.
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Abstract
An assembly determines operating parameters of a tire. The assembly includes a tripod sensor mounted within an inner cavity of the tire underneath a crown portion and an innerliner on which the tripod sensor is mounted. The tripod sensor includes a tri-axial accelerometer for creating a circumferential signal for determining slip ratio, a lateral signal for determining a slip angle, and a radial signal for determining load on the tire.
20 Citations
12 Claims
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1. A tire wear state estimation system comprising:
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at least one tire supporting a vehicle; a tri-axial sensor mounted to the tire, the tri-axial sensor measuring tire inflation pressure and generating tire inflation pressure data, measuring tire vertical mode frequency and generating tire vertical mode frequency data, generating tire-specific frequency mode coefficients using tire-specific identification data, and calculating an estimation of a tire wear state based upon the tire inflation pressure data, the vertical mode frequency data, and the tire-specific frequency mode coefficients. - View Dependent Claims (2, 3, 4, 5)
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6. A tire wear state estimation system comprising:
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at least one tire supporting a vehicle; a tri-axial sensor affixed to the tire operative to measure a tire cavity pressure and transmit tire inflation pressure data; and tire-specific identification data stored within, and accessible from, the tri-axial sensor, the tri-axial sensor measuring tire vertical mode frequency and generating tire vertical mode frequency data, generating tire-specific frequency mode coefficients using the tire-specific identification data and on-vehicle or in-tire measurement of a tire vertical mode frequency, and calculating an estimation of a tire wear state based upon tire inflation pressure data, tire vertical mode frequency data, and tire-specific frequency mode coefficients. - View Dependent Claims (7)
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8. A method of tire wear state estimation comprising:
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affixing a tri-axial sensor to a vehicle-supporting tire, the tri-axial sensor measuring a tire cavity inflation pressure and generating tire inflation pressure data; measuring tire vertical mode frequency and generating tire vertical mode frequency data; generating tire-specific frequency mode coefficients using tire-specific identification data; and calculating an estimation of a tire wear state based upon the tire inflation pressure data, vertical mode frequency data, and tire-specific frequency mode coefficients. - View Dependent Claims (9, 10, 11, 12)
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Specification