METHOD OF DETECTING AN OCCURRENCE OF HYDROPLANING OF A TIRE ON A ROAD
First Claim
1. A method of detecting an occurrence of hydroplaning of a tire of a vehicle travelling on wet ground, a tread of the tire being equipped with one or more sensors each capable of measuring a compression experienced locally by the tread when the tire is rolling on the ground and of producing a signal corresponding to measurements made by the one or more sensors, the method comprising:
- obtaining measurements of a compression when a tire is rolling on the ground;
producing a signal corresponding to the measurements;
extracting a portion of the signal relating to a passing of one or more sensors into an apparent area of contact between the tire and the ground;
determining an instantaneous value (Δ
E, Rz), corresponding to a presence of an indirect contact region of the apparent area of contact between the tread of the tire and the ground, based on the extracted portion of the signal, and;
triggering an alarm when the instantaneous value satisfies a given relationship.
2 Assignments
0 Petitions
Accused Products
Abstract
In a method of detecting an occurrence of hydroplaning of a tire of a vehicle travelling on wet ground, a tread of the tire of the vehicle is equipped with one or more sensors each capable of measuring a compression experienced locally by the tread when the tire is rolling on the ground and of producing a signal corresponding to these measurements. According to the method, measurements are obtained of a compression when the tire is rolling on the ground; a signal corresponding to these measurements is produced; a portion of the signal relating to a passing of one or more sensors into an apparent area of contact between the tire and the ground is extracted; an instantaneous value (ΔE, Rz), corresponding to a presence of an indirect contact region of the apparent area of contact between the tread and the ground, is determined from the extracted portion of the signal; and an alarm is triggered when the instantaneous value satisfies a given relationship.
20 Citations
12 Claims
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1. A method of detecting an occurrence of hydroplaning of a tire of a vehicle travelling on wet ground, a tread of the tire being equipped with one or more sensors each capable of measuring a compression experienced locally by the tread when the tire is rolling on the ground and of producing a signal corresponding to measurements made by the one or more sensors, the method comprising:
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obtaining measurements of a compression when a tire is rolling on the ground; producing a signal corresponding to the measurements; extracting a portion of the signal relating to a passing of one or more sensors into an apparent area of contact between the tire and the ground; determining an instantaneous value (Δ
E, Rz), corresponding to a presence of an indirect contact region of the apparent area of contact between the tread of the tire and the ground, based on the extracted portion of the signal, and;triggering an alarm when the instantaneous value satisfies a given relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for detecting an occurrence of hydroplaning of a tire of a vehicle travelling on wet ground, comprising:
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a tire, the tire including tread equipped with one or more sensors each configured to measure compressive stresses experienced locally by the tread rolling on the ground; a transmitter for transmitting a signal corresponding to measurements of stresses sensed by the one or more sensors; and a signal processing unit configured to extract, from the transmitted signal, a signal portion corresponding to a number or to a duration of passage of the one or more sensors in an area of contact of the tire rolling on the ground, wherein the processing unit is configured to execute a program for implementing a method of detecting an occurrence of hydroplaning based on the extracted signal, the method including; utilizing one or more sensors to make measurements of a compression when the tire is rolling on the ground; producing a signal corresponding to the measurements; extracting a portion of the signal relating to a passing of the one or more sensors into an apparent area of contact between the tire and the ground; determining an instantaneous value (Δ
E, Rz), corresponding to a presence of an indirect contact region of the apparent area of contact between the tread of the tire and the ground, based on the extracted portion of the signal, and;triggering an alarm when the instantaneous value satisfies a given relationship.
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Specification