US 10,132,719 B2 · Method for estimating the reliability of measurements by wheel sensors of a vehicle and system for its application

Abstract

A method and system for evaluating the reliability of data supplied by multi-function WFC sensors of tires of wheels of a vehicle for targeted applications, on the basis of the irregularities of the road, which use displacement data sent from the road handling adaptation equipment of the vehicle, enabling the variations in the road condition to be reflected. The system includes equipment for monitoring the wheel displacement data for adapting it to the variations of profile of the road on which it is traveling, in order to maintain a stable body position. The monitoring equipment is linked to the WFC sensors via a central processing unit which is capable of correlating data supplied by the WFC sensors and values of wheel displacement data supplied by the monitoring equipment for the purpose of weighting the values of at least one parameter obtained from the data delivered by the WFC sensors.

Claims17

Dependent claims

A method for estimating the reliability of measurements made periodically by multi-function Wheel Fitted Component (WFC) sensors of tires of wheels of a vehicle traveling on a road, the method comprising, in succession:

a step of extracting, from a system for monitoring the vehicle in a given environment for the purpose of adapting a behavior of the vehicle to the given environment, periodic wheel displacement data on vehicle body displacement heights at the position of each wheel, indicating a state of the variations of a profile of the road on which the vehicle is traveling;
a step of correlating the periodic wheel displacement data with the values of at least one parameter sensitive to the variations in the profile of the road for an application of the WFC sensors, the values being deduced from the measurements made by the WFC sensors on each wheel at the same instant;
a step of using decision criteria to deduce a decision on the reliability of a given set of values of the at least one parameter deduced from the measurements of the WFC sensors based on the correlation between the displacement data and the values of the at least one parameter;
and
a step of performing one of (1) determining wheel location, (2) detecting one or more of overload and wear of the tires, (3) performing automatic training of the WFC sensors, and (4) monitoring positions of the WFC sensors using the given set of values of the at least one parameter and the decision on the reliability of the given set of values,
wherein the number of periodic wheel displacement data is increased until a rate of global correlation between the periodic wheel displacement data and the values of said at least one parameter is at least equal to a given correlation threshold defining a reliability decision criterion.

3 more elements

a step of extracting, from a system for monitoring the vehicle in a given environment for the purpose of adapting a behavior of the vehicle to the given environment, periodic wheel displacement data on vehicle body displacement heights at the position of each wheel, indicating a state of the variations of the profile of the road on which the vehicle is traveling;
a step of correlating the periodic wheel displacement data with the values of at least one parameter sensitive to the variations in a profile of the road for an application of the WFC sensors, the values being deduced from the measurements made by the WFC sensors on each wheel at the same instant;
a step of using decision criteria to deduce a decision on the reliability of a given set of values of the parameter deduced from the measurements of the WFC sensors based on the correlation between the displacement data and the values of the parameter;
and
a step of performing one of (1) determining wheel location, (2) detecting one or more of overload and wear of the tires, (3) performing automatic training of the WFC sensors, and (4) monitoring positions of the WFC sensors using the given set of values of the parameter and the decision on the reliability of the given set of values,
wherein a rolling average of the periodic wheel displacement data is determined, and
the periodic wheel displacement data relate to variations in the rolling average of the periodic wheel displacement data.

4 more elements

Dependencies are inferred from the claim text.

Method for estimating the reliability of measurements by wheel sensors of a vehicle and system for its application

Life of this patent

Method for estimating the reliability of measurements by wheel sensors of a vehicle and system for its application

Life of this patent

Abstract

Claims17