Patent ID: 7857772
Filing Date: 2010-12-28
Classification: A43D,A61B,A63B,G01C,G01P

Abstract:
1. A stride monitoring device, comprising: a first shoe including at least one magnetic mass; a second shoe including at least one magnetometer configured to measure a magnetic field produced by the magnetic mass in the first shoe and to output magnetic field signals based on the measured magnetic field produced by the magnetic mass in the first shoe, wherein said magnetic field signals can be processed to determine stride parameters and a distance between the shoes, and said second shoe further includes at least one accelerometer configured to measure an acceleration and to output acceleration signals based on the measured acceleration, and the accelerometer is further configured to output acceleration signals which are analyzed by a processor to determine instants of impact of said second shoe, and wherein the instants of impact are taken into account for calibrating in time a dynamic measurement of the distance between the shoes.