A Novel Detection Technique for Detecting Sports Motion based on Electrostatic Induction

摘要

In this study, we propose a technique for detecting sports motion by measuring the current generated because of a change in the capacitance between a given electrode and the human body by using wireless portable sensor. A theoretical model is proposed for the electrostatic induction current generated because of a change in the electric potential of the subject's body due to foot motions. We apply the proposed technique to determine the time for which an athlete's foot remains in contact with the ground and off the ground during pitching motion while playing baseball. Thus, we can quantitatively estimate the time for which an athlete's foot is in contact with the ground and off the ground on the basis of the time at which peaks were observed in the waveforms of the electrostatic induction current.