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Method for locating the position of the wheels of a vehicle

  • US 10,449,810 B2
  • Filed: 03/30/2012
  • Issued: 10/22/2019
  • Est. Priority Date: 04/14/2011
  • Status: Active Grant
First Claim
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1. A method for locating the position of the wheels (1-4) of a vehicle (V), the vehicle comprising:

  • r wheels (1-4), each equipped with an electronic module (5-8), integrating means (9) for measuring the angular position of said electronic module, and a transmitter (10) for transmitting signals comprising data representing operational parameters of each of said wheels and an identification code of said electronic module,positioned on the vehicle (V) close to each of the wheels (1-4), a wheel speed sensor (13-16) providing, in the form of values convertible into angular values, data representing orientation of the respective one of the wheels (1-4), andmounted on the vehicle (V), a central processing unit (11), provided with a receiver (12) for receiving signals coming from the electronic modules (5-8) and connected to the different wheel speed sensors (13-16),said method for locating the position of a wheel (1-4) comprising;

    the electronic module (5-8) equipping the wheel delivering, at a time t1, a signal called the first signal RF1, transmitted for a given angular position of said electronic module, and then at successive times t2, t3 . . . tn, (n−

    1) signals RF2 . . . RFn transmitted for angular positions of said electronic module shifted by determined angular values, θ

    2 to θ

    n respectively, with respect to the angular position of transmission of the first signal, where 0°



    θ

    i≤

    360°

    (i=2 to n), each of the n signals RF1 . . . RFn comprising the identification code of the electronic module (5-8) and data representing the angular position of transmission, andthe central processing unit (11);

    gathering the values convertible into angular values δ

    1 to δ

    n measured by each of the r wheel speed sensors (13-16), at each of the successive times t1 to tn,calculating, for each series of angular values δ

    1 to δ

    n corresponding to the values measured by each wheel measuring sensor (13-16), a characteristic value Vn1, Vn2 . . . Vnr representing the dispersion of the series of values δ

    1, (δ

    2

    θ

    2) . . . (δ

    n

    θ

    n),selecting, by comparison of the r characteristic values Vn1, Vn2 . . . Vnr, the most closely grouped series of angular values δ

    1, (δ

    2

    θ

    2) . . . (δ

    n

    θ

    n), andallocating the identification code of the electronic module (5-8) to the position of the wheel (1-4) located close to the wheel speed sensor (13-16) which is the source of the most closely grouped series of angular values δ

    1, (δ

    2

    θ

    2) . . . (δ

    n

    θ

    n).

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