×

Piezoelectric based system and method for determining tire load

  • US 10,000,100 B2
  • Filed: 12/30/2010
  • Issued: 06/19/2018
  • Est. Priority Date: 12/30/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method of electronically determining tire load, comprising:

  • determining tire pressure within a tire using a pressure sensor that is part of an in tiremodule mounted on the tire;

    determining a contact patch angle related to the tire'"'"'s operation within a contact patch area adjacent to a ground surface by analyzing an output of a piezoelectric sensor provided as part of the in tire module mounted on the tire, the contact patch angle indicative of an angular portion of the tire that is in contact with the ground surface;

    electronically comparing the determined tire pressure and the one or more contact patch parameters to a database of known values to determine a corresponding tire load value for the tire; and

    providing the determined corresponding tire load value for the tire as electronic output,wherein determining the contact patch angle for a given iteration of the piezoelectric sensor traveling through the contact patch area comprises subtracting a contact patch exit time from a contact patch entry time to obtain a first difference;

    obtaining a second difference by measuring an amount of time for one revolution of the tire; and

    dividing the first difference by the second difference.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×