Method for checking and/or monitoring the use of a tire
AssigneeCompagnie Generale Des Etablissements Michelin
InventorAntoine Paturle
Life of this patent
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Abstract
A method for checking and/or monitoring the use of a tire (1) mounted on a vehicle (7), comprises the following steps: acquisition, by a microphone (10) arranged inside the tire, of an acoustic response of said tire (1) obtained under the effect of a pulsed mechanical stress thereon, and processing of said response in the frequency domain, characterized in that said processing identifies, in the response in the frequency domain, two spectrum spikes situated on either side of a reference frequency corresponding to the first cavity mode of the tire and, as a function of the frequency deviation between the two duly identified spikes, determines information relating to at least one parameter of use of the tire.
Claims13
A method for checking and/or monitoring a use of a tire mounted on a vehicle comprising the following steps:
- acquiring, by a microphone arranged inside the tire, an acoustic response of the tire obtained by kicking or striking the tire when the vehicle is stopped;
- and
- processing the acoustic response in a frequency domain by a computerized data processing unit,
- wherein the processing of the acoustic response identifies, in a spectrum of the acoustic response in the frequency domain, a first spike situated on a side of a reference frequency and a second spike situated on another side of the reference frequency, said reference frequency corresponding to a first cavity mode of the tire, the first spike and the second spike in the frequency domain reflecting a duplication of the fundamental frequency of the first cavity mode of the tire due to a deformation of the tire mounted on the vehicle, and, as a function of a frequency deviation between the first spike and the second spike, determines information relating to least one parameter of use of the tire, the at least one parameter of use of the tire being related to a deformation, a load, or a pressure of the tire.
A system for checking and/or monitoring a use of a tire mounted on a vehicle, the system comprising:
- a microphone arranged inside the tire and suitable for acquiring an acoustic response of the tire obtained by kicking or striking the tire when said tire is stopped;
- and
- a computerized data processing unit configured to identify, on the acoustic response in the frequency domain, a first spike situated on a side of a reference frequency and a second spike situated on another side of the reference frequency, said reference frequency corresponding to a first cavity mode, the first spike and the second spike in the frequency domain reflecting a duplication of the fundamental frequency of the first cavity mode of the tire due to a deformation of the tire mounted on the vehicle, and, as a function of a frequency deviation between the first spike and the second spike, determine information relating to at least one parameter of use of the tire, the at least one parameter of use of the tire being related to a deformation, a load, or a pressure of the tire.
Dependencies are inferred from the claim text.