METHOD FOR STEP DETECTION AND GAIT DIRECTION ESTIMATION

摘要

A method for detecting a human's steps and estimating the horizontal translation direction and scaling of the resulting motion relative to an inertial sensor is described. When a pedestrian takes a sequence of steps the displacement can be decomposed into a sequence of rotations and translations over each step. A translation is the change in the location of pedestrian's center of mass and a rotation is the change along z-axis of the pedestrian's orientation. A translation can be described by a vector and a rotation by an angle. WO 2014/025429 PCT/US2013/040670 z HEEL STRIKE -200 -400 -600 TIM:E