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Sensors 2018, 18(1), 78; https://doi.org/10.3390/s18010078

A Triple-Mode Flexible E-Skin Sensor Interface for Multi-Purpose Wearable Applications

1
School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea
2
School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea
*
Authors to whom correspondence should be addressed.
Received: 28 November 2017 / Revised: 22 December 2017 / Accepted: 28 December 2017 / Published: 29 December 2017
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [5111 KB, uploaded 29 December 2017]   |  

Abstract

This study presents a flexible wireless electronic skin (e-skin) sensor system that includes a multi-functional sensor device, a triple-mode reconfigurable readout integrated circuit (ROIC), and a mobile monitoring interface. The e-skin device’s multi-functionality is achieved by an interlocked micro-dome array structure that uses a polyvinylidene fluoride and reduced graphene oxide (PVDF/RGO) composite material that is inspired by the structure and functions of the human fingertip. For multi-functional implementation, the proposed triple-mode ROIC is reconfigured to support piezoelectric, piezoresistance, and pyroelectric interfaces through single-type e-skin sensor devices. A flexible system prototype was developed and experimentally verified to provide various wireless wearable sensing functions—including pulse wave, voice, chewing/swallowing, breathing, knee movements, and temperature—while their real-time sensed data are displayed on a smartphone. View Full-Text
Keywords: electronic skin; readout integrated circuit; sensor interface; wearable device; triple-mode; multi-purpose electronic skin; readout integrated circuit; sensor interface; wearable device; triple-mode; multi-purpose
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kim, S.-W.; Lee, Y.; Park, J.; Kim, S.; Chae, H.; Ko, H.; Kim, J.J. A Triple-Mode Flexible E-Skin Sensor Interface for Multi-Purpose Wearable Applications. Sensors 2018, 18, 78.

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