Patent ID: 8768560
Filing Date: 2014-07-01
Classification: G01P,Y10T

Abstract:
1. A method for performing transform calibration of an accelerometer of a telematics device during installation in a vehicle, comprising: placing a telematics device in a vehicle at an initial position having a known alignment with respect to a given frame of reference of the vehicle; selecting a final installation position in the vehicle having an orientation initially unknown with respect to the given frame of reference of the vehicle; moving the telematics device from the initial position to the final installation position in the vehicle with the telematics device concurrently tracking and integrating angle changes of the moving telematics device; providing, from the tracking and integrating, a set of coordinates that establishes the orientation of the telematics device in the final installation position with respect to the given frame of reference of the vehicle; and transform calibrating an accelerometer of the telematics device using the set of coordinates so as to leave the telematics device installed at the final installation position in the vehicle with its accelerometer transform calibrated with respect to the given frame of reference of the vehicle.