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Inclinometer methods and systems for generating and calibrating an in-vehicle inclination angle

  • US 10,002,469 B2
  • Filed: 09/09/2016
  • Issued: 06/19/2018
  • Est. Priority Date: 09/09/2016
  • Status: Active Grant
First Claim
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1. An inclinometer method for generating an in-vehicle inclination angle (θ

  • r) of the vehicle or a vehicle member, the method comprising;

    measuring an acceleration (v) of the vehicle or vehicle member;

    measuring a pitch angular velocity (q) of a computer;

    measuring a longitudinal accelerometer signal (ax,S) of the computer;

    generating an in-vehicle pitch angle (θ

    );

    calibrating an inclinometer-vehicle relative misalignment pitch offset angle (θ

    p) of the vehicle or vehicle member using a stationary-mode or a dynamic-mode based on a road grade of a road segment; and

    generating an in-vehicle inclination angle (θ

    r) of the vehicle or vehicle member,wherein the vehicle is present, andwherein the vehicle is selected from the group consisting of;

    a car, a truck, and a construction equipment vehicle.

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