Method and System for Performing Calibration of an Accelerometer of a Telematics Device during Installation in a Vehicle
First Claim
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;
moving the telematics device from the initial position to a final installation position in the vehicle with the telematics device concurrently tracking and integrating the angle changes of the moving telematics device to provide a set of coordinates of the final installation position; 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 position in the vehicle with its accelerometer transform calibrated with respect to the given frame of reference of the vehicle.
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Accused Products
Abstract
A method for performing transform calibration of an accelerometer of a telematics device during installation in a vehicle includes placing the device in the vehicle at an initial position having a known alignment with a given frame of reference of the vehicle, moving the telematics device from the initial position to a final installation position in the vehicle with a tri-axial rate gyroscope of the device concurrently tracking and integrating the angle changes to provide a set of coordinates of the final installation position, and transform calibrating the accelerometer of the device using the set of coordinates so as to leave the device installed at the final position with its accelerometer transform calibrated with respect to the given frame of reference.
9 Citations
20 Claims
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1. A method for performing transform calibration of an accelerometer of a telematics device during installation in a vehicle, comprising:
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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; moving the telematics device from the initial position to a final installation position in the vehicle with the telematics device concurrently tracking and integrating the angle changes of the moving telematics device to provide a set of coordinates of the final installation position; 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 position in the vehicle with its accelerometer transform calibrated with respect to the given frame of reference of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for performing transform calibration of an accelerometer of a telematics device during installation in a vehicle, comprising:
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operatively mounting a calibration tool to a locator so as to form a telematics device therewith in which the calibration tool is physically and electrically coupled to the locator, the locator having an accelerometer; placing the telematics device in a level orientation on a floor of a vehicle at an initial position having a known alignment with respect to a given frame of reference of the vehicle; moving the telematics device from the initial position to a final installation position in the vehicle as a tri-axial rate gyroscope of the calibration tool concurrently tracks and integrates angle changes of the moving telematics device and a computer of the calibration tool optimizes the angle changes into a set of coordinates to create a solution that is recognizable to a Euler-based transform engine in the locator; transform calibrating the accelerometer of the locator using the set of coordinates; and dismounting the calibration tool from the locator so as to leave the locator installed at the final position in the vehicle with its accelerometer transform calibrated with respect to the given frame of reference of the vehicle. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system for performing transform calibration of an accelerometer of a telematics device during installation in a vehicle, comprising:
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a locator having an accelerometer capable of being transform calibrated; and a calibration tool operatively mounted to said locator to form a telematics device adapted to be moved from an initial aligned position in a vehicle to a final installation position therein; said calibration tool in said telematics device electrically coupled to said locator for supplying electrical power to said locator and transferring data from the calibration tool to said locator to facilitate transform calibration of said accelerometer in said locator; said calibration tool in said telematics device capable of concurrently tracking and integrating angle changes of the moving telematics device to provide into a set of coordinates of the final installation position. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification