Method for processing pressure and temperature measurements in a tire monitoring system
First Claim
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1. Process for monitoring an inflation condition of a plurality of tires mounted on a vehicle, each tire containing a gaseous fluid which has a mass estimated by an estimator value and the plurality of tires supporting the vehicle on a surface, the process comprising:
- providing at least two series of estimator values, each series comprising the estimator values, as determined at substantially the same time, for all of the plurality of tires;
calculating the average estimator value of said estimator values for each series to thereby obtain a set of average estimator values, the set having a maximum average estimator value;
comparing said maximum average estimator value to a predetermined threshold minimum value; and
providing an alarm indication in response to a determination that said maximum average estimator value is less than the predetermined threshold minimum value.
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Abstract
Under-inflation of a tire caused by natural deflation is subject to specific monitoring: a series is established consisting of all the averages of inflated air volume in each tire, calculated with each acquisition of pressure and temperature measurements; the maximum of the most recent averages is determined; an alarm is activated if this maximum value is lower than a threshold.
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Citations
7 Claims
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1. Process for monitoring an inflation condition of a plurality of tires mounted on a vehicle, each tire containing a gaseous fluid which has a mass estimated by an estimator value and the plurality of tires supporting the vehicle on a surface, the process comprising:
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providing at least two series of estimator values, each series comprising the estimator values, as determined at substantially the same time, for all of the plurality of tires; calculating the average estimator value of said estimator values for each series to thereby obtain a set of average estimator values, the set having a maximum average estimator value; comparing said maximum average estimator value to a predetermined threshold minimum value; and providing an alarm indication in response to a determination that said maximum average estimator value is less than the predetermined threshold minimum value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Method for monitoring inflated conditions of a plurality of tires of a vehicle, comprising:
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providing at a selected time t a first series of inflated condition values grouping in the same series a plurality of inflated condition values representative of the inflated condition of every tire of said plurality of tires, each inflated condition value in said first series representing collectively the inflated conditions of the tires at approximately the same time t; providing at least one additional series of inflated condition values in which the respective values of the at least one additional series and of any other additional series collectively represent the inflated conditions of the tires respectively each at the same time interval t.sub.(n) different from the other time intervals; calculating the average value of each of the series of inflated condition values; and determining if the highest overall average value of all of the series of inflated condition values is within the tolerance range of a threshold value.
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Specification