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Method and system for signaling an aquaplaning condition of a tyre fitted on a vehicle

  • US 9,043,112 B2
  • Filed: 10/22/2009
  • Issued: 05/26/2015
  • Est. Priority Date: 10/24/2008
  • Status: Active Grant
First Claim
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1. A system capable of signalling an aquaplaning condition of a tyre, the tyre rolling on a rolling surface, a footprint area being defined between said tyre and said rolling surface, a layer of water being interposed between said tyre and said rolling surface, the system comprising:

  • a detection device for detecting a first signal representative of a deformation of said tyre due to rolling of said tyre on said rolling surface, said first signal comprising at least one portion representative of an interaction between the tyre and said layer of water; and

    at least one processing unit operatively associated with said detection device and capable of being adapted to process said first signal so as to determine at least one parameter representative of an aquaplaning condition of said tyre,wherein said at least one processing unit is adapted to identity said at least one portion of the first signal, said at least one portion being representative of a deformation of an inner surface of the tyre in a region that is external to said footprint area and substantially contiguous to said footprint area;

    wherein said at least one processing unit comprises a first filtering module for filtering said at least one portion of the first signal in a first frequency band included between 700 Hz and 2000 Hz;

    said at least one processing unit capable of being further adapted to generate a notification signal as a function of said at least one parameter; and

    wherein said at least one processing unit comprises a first computing module for determining said at least one parameter as a function of amplitudes of a plurality of samples within said at least one portion of the first signal filtered in the first frequency band, the plurality of samples being obtained through a sampling of the first signal.

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