In-tire multi-element piezoelectric sensor
First Claim
Patent Images
1. A tire sensor, comprising:
- a substrate; and
at least four pairs of motion sensitive sensors mounted on said substrate,wherein each pair of said pairs of motion sensitive sensors are mounted on said substrate in a predetermined relationship to each other and at a predetermined distance from each other in a generally octagonal configuration around a central axis whereby selected tire characteristics may be ascertained by evaluating signals generated by the at least four pairs of motion sensitive sensors.
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Abstract
Disclosed is an apparatus and methodology for monitoring tire related conditions. A substrate is provided having one or more pairs of sensors mounted thereon. The pairs of sensors are mounted in predetermined relationship to each other at predetermined separation distances such that rotational direction, speed and other parameters of a tire with which the sensors may be associated may be determined. In some embodiments, plural effective pairs of sensors are provided so that mounting orientation of the sensor need not be predetermined.
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Citations
12 Claims
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1. A tire sensor, comprising:
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a substrate; and at least four pairs of motion sensitive sensors mounted on said substrate, wherein each pair of said pairs of motion sensitive sensors are mounted on said substrate in a predetermined relationship to each other and at a predetermined distance from each other in a generally octagonal configuration around a central axis whereby selected tire characteristics may be ascertained by evaluating signals generated by the at least four pairs of motion sensitive sensors. - View Dependent Claims (2, 3, 4, 5)
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6. A tire assembly, comprising:
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a tire; a substrate; and at least one pair of piezoelectric sensors mounted on said substrate, the sensors of the at least one pair of piezoelectric sensors being mounted on said substrate in a predetermined relationship to each other and at a predetermined distance from each other; and a power harvesting element mounted on said substrate in an area between the sensors of the at least one pair of piezoelectric sensors; whereby selected tire characteristics may be ascertained by evaluating signals generated by the at least one pair of piezoelectric sensors. - View Dependent Claims (7, 8, 9)
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10. A method for determining selected tire characteristics, comprising:
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providing a tire; mounting at least one pair of piezoelectric sensors a predetermined distance apart on a substrate; mounting a power harvesting element in an area between the piezoelectric sensors; providing the substrate with the tire; rotating the tire; and evaluating signals generated by the at least one pair of piezoelectric sensors to determine selected tire characteristics. - View Dependent Claims (11, 12)
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Specification