METHOD AND SYSTEM FOR DETERMINING OPERATING PARAMETERS OF A TYRE DURING RUNNING OF A VEHICLE
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Accused Products
Abstract
An oscillating structure is coupled to a crown portion of a tyre. The oscillating structure includes a housing and a piezoelectric element coupled to the housing. The piezoelectric element is able to oscillate in an oscillation direction, which could match either a longitudinal or a radial direction of the tyre. An electrical signal generated by the piezoelectric element is processed so as to determine at least one operating parameter of the tyre. The processing includes determining whether a rotation speed of the tyre is greater than a threshold speed; and, in the negative, extracting information for determining the at least one operating parameter of the tyre from a low-pass filtered signal. Such low-pass filtered signal is obtained by removing at least frequency components of the electrical signal having a frequency higher than or equal to a resonance peak frequency of the oscillating structure.
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Citations
104 Claims
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1-52. -52. (canceled)
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53. A method for determining at least one operating parameter of a tyre fitted on a vehicle, comprising:
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providing an oscillating structure comprising a housing and a piezoelectric element coupled to said housing and capable of oscillating in an oscillation direction; coupling said oscillating structure to a crown portion of said tyre; rotating said tyre on a rolling surface so as to cause oscillation of said oscillating structure, thereby causing said piezoelectric element to generate an electrical signal; and processing said electrical signal so as to determine said at least one operating parameter of the tyre, wherein said processing of said electrical signal comprises; determining whether a rotation speed of said tyre is greater than a threshold speed; and in the negative, extracting information for determining said at least one operating parameter of the tyre from a low-pass filtered signal, the low-pass filtered signal being obtained by removing at least frequency components of said electrical signal having a frequency higher than or equal to a resonance peak frequency of said oscillating structure. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. A system for determining at least one operating parameter of a tyre fitted on a vehicle comprising:
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an oscillating structure coupled to a crown portion of said tyre, the oscillating structure comprising a housing and a piezoelectric element coupled to said housing and capable of oscillating in an oscillation direction; and a processing device capable of being adapted to process an electrical signal generated by said piezoelectric element so as to determine said at least one operating parameter of the tyre, wherein said processing device comprises an analysis circuit capable of being adapted to; determine whether a rotation speed of said tyre is greater than a threshold speed; and in the negative, extract information for determining said at least one operating parameter of the tyre from a low-pass filtered signal, the low-pass filtered signal being obtained by removing at least frequency components of said electrical signal having a frequency higher than or equal to a resonance peak frequency of said oscillating structure. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104)
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Specification