Method and Apparatus for Determining Displacement from Acceleration Data

摘要

A method (100) and apparatus (900) for determining displacement from acceleration data is disclosed. The method (100) comprises partitioning (106), for an axis of acceleration, filtered acceleration data into a sequence of segments with at least one positive acceleration time segment and at least one negative acceleration time segment. The method (100) further comprises force fitting (118), by a processor (910), each positive acceleration time segment and an adjacent negative acceleration time segment into a model positive and negative acceleration pair curve such that a cumulative velocity value of the model positive and negative acceleration pair curves is equal to zero. Finally, the method (100) double integrates (120) the model positive and negative acceleration pair curves to obtain the displacement corresponding to the acceleration data.

主权项

1. A method for determining displacement from acceleration data, the method comprising:
partitioning, for an axis of acceleration, filtered acceleration data into a sequence of segments with at least one positive acceleration time segment and at least one negative acceleration time segment; force fitting, by a processor, each positive acceleration time segment and an adjacent negative acceleration time segment into a model positive and negative acceleration pair curve such that a cumulative velocity value of the model positive and negative acceleration pair curves is equal to zero; and double-integrating the model positive and negative acceleration pair curves to obtain displacement corresponding to the acceleration data.