Human Body Detection that Uses Electric Field by Walking

Abstract

For a method for detecting the human body, such factors that no blind corner should exist, subjects other than human beings will not be erroneously detected. In this paper, a new method for detecting a human body wherein attention is focused on the human characteristics of walking will be studied. It had been known that a human body is electrified by walking, thus forming an electrical field around the human body. It was considered from walking waveforms in which human walking was reflected that a human body could be detected more advantageously. The measuring method is not affected by vibrations, etc. In addition, detection is possible with a simple electrode, which is advantageous in terms of cost. In this study, electrification on the human body in which components of actions of both feet are superimposed will be measured at a remote place, under an assumed living environment, and by using an algorithm that remotely detects walking characteristics based on the waveforms in which movements of both feet are reflected. Walking of 10 subjects including infants was actually measured, and a system, which is capable of detecting the number of steps at an accuracy of approximately 99.4% was shown.