NDLI: Mobile In-Ear Power Sensor for Jaw Joint Activity

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Mobile In-Ear Power Sensor for Jaw Joint Activity

Content Provider	MDPI
Author	Bouchard-Roy, Jacob Delnavaz, Aidin Voix, Jérémie
Copyright Year	2020
Description	In only a short time, in-ear wearables have gone from hearing aids to a host of electronic devices such as wireless earbuds and digital earplugs. To operate, these devices rely exclusively on batteries, which are not only cumbersome but known for several drawbacks. In this paper, the earcanal dynamic movements generated by jaw activity are evaluated as an alternative source of energy that could replace batteries. A mobile in-ear power sensor device capable of measuring jaw activity metrics is prototyped and tested on three test subjects. The test results are subsequently analyzed using a detection algorithm to detect the jaw activity based on the captured audio signals and to classify them into four main categories, namely chewing, swallowing, coughing and talking. The mean power associated with each category of activity is then calculated by using the pressure signals as measured by a water-inflated earplug subjected to earcanal dynamic movement. The results show that $3.8$ mW of power, achieved mainly by the chewing movement, is readily available on average from within the earcanal.
Starting Page	1047
e-ISSN	2072666X
DOI	10.3390/mi11121047
Journal	Micromachines
Issue Number	12
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2020-11-27
Access Restriction	Open
Subject Keyword	Micromachines Industrial Engineering Jaw Joint Activity In-ear Power Sensor Earcanal Dynamic Movement Energy Harvesting
Content Type	Text
Resource Type	Article

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