2018 年 138 巻 3 号 p. 193-198
The discrimination of a human body using electrostatic induction is important from the view point of the protection of personal privacy without the use of a surveillance camera, etc. Discrimination using a surveillance camera is not desirable to protect personal privacy though the camera is used frequently. The discrimination of the height and posture of a walking charged human body has not been performed though there are some related studies on electrostatic induction. In this study, we use an induction ceiling and induction flooring for discriminating the height and posture of a charged human body. The tests of the human body discrimination are performed when the subject is marching in place on the induction flooring. The experimental results show that the percentage of the induced voltage generated on the induction ceiling to the charged human body voltage decreases when the height of the charged human body decreases. The experimental results are compared with the results of a capacitance model that consists of capacitances between bodies obtained from the measured grounding capacitance. The calculated results show a similar trend to that of the experimental results. The results will be helpful to discriminate the height and posture of a walking charged human body.
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