Method for calibrating sensor positions in a human movement measurement and analysis system
First Claim
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1. A method for locating a system of motion sensors on a human or other animal body for capture of movement time history, comprising the steps of:
- 1a) determining mathematical transformation matrices between coordinate systems of sensors strategically positioned on a human or other animal body and skeletal coordinate systems to produce a kinematic model of the human or other animal body;
1b) refining the transformation matrices of the kinematic model to minimize anatomical joint gap error; and
1c) monitoring the anatomical joint gap to detect and correct for sensor slippage during data collection.
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Abstract
A method for calibrating the position and orientation of a 6-DOF sensor system mounted on a multi-segmented structure, such as the human body, is provided. The method includes a stage for mounting the sensors on the body, a stage for acquiring the 6-DOF kinematics from those sensors, a calibration stage whereby the prior stages are used to determining the sensor-to-segment transformations that are most physiologically optimal during relative skeletal motions, and a stage that to periodically monitor and correct for sensor slippage.
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Citations
12 Claims
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1. A method for locating a system of motion sensors on a human or other animal body for capture of movement time history, comprising the steps of:
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1a) determining mathematical transformation matrices between coordinate systems of sensors strategically positioned on a human or other animal body and skeletal coordinate systems to produce a kinematic model of the human or other animal body;
1b) refining the transformation matrices of the kinematic model to minimize anatomical joint gap error; and
1c) monitoring the anatomical joint gap to detect and correct for sensor slippage during data collection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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