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CALIBRATION FOR THREE DIMENSIONAL MOTION SENSOR

  • US 20110301901A1
  • Filed: 06/04/2010
  • Published: 12/08/2011
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. A method for simultaneously calibrating several electronic devices having inertial measurement units (IMUs), comprising:

  • placing several electronic devices having embedded IMUs in a testing apparatus;

    moving the testing apparatus in a sequence of testing positions, where a true IMU output corresponding to each testing position is known;

    retrieving, at each testing position, an IMU output from each of the several devices;

    calculating, for each device, sensitivity and offset factors for adjusting the IMU output to approach the known true IMU output; and

    storing, in storage of each device, the calculated sensitivity and offset factors corresponding to the device.

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