Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study

Wearable health monitoring systems that collect data in free-living environments are becoming increasingly popular. Flexible printed circuits provide a commercially available option that can conform to the shape of a wearable system and support electronic sensing and flexible interconnect. However,...

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Autores principales:	Shelby Critcher, Todd J. Freeborn
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Flexible printed circuits wearable sensors failure analysis trace cracking bioimpedance Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4
Acceso en línea:	https://doaj.org/article/884a820f1f8f43b7a685336d6d3e6c22
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spelling	oai:doaj.org-article:884a820f1f8f43b7a685336d6d3e6c222021-11-25T00:01:13ZFlexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study2644-122510.1109/OJCAS.2021.3122369https://doaj.org/article/884a820f1f8f43b7a685336d6d3e6c222021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9626077/https://doaj.org/toc/2644-1225Wearable health monitoring systems that collect data in free-living environments are becoming increasingly popular. Flexible printed circuits provide a commercially available option that can conform to the shape of a wearable system and support electronic sensing and flexible interconnect. However, repetitive dynamic activity can stress and damage the interconnect of flexible PCBs which degrades data quality. This case study evaluated the performance of flexible PCBs providing interconnect between electrodes and sensing electronics for tissue bioimpedance measurements in a wearable system. Resistance data (1 kHz to 128 kHz) was collected from localized knee tissues of 3 participants using the wearable design with flexible PCBs over 7 days of free-living. From electrical and optical inspection after use trace cracking of the flexible PCBs occurred, degrading tissue resistances reported by the wearable system. Exploration of these results advances understanding of how flexible PCBs perform in free-living conditions for wearable bioimpedance applications.Shelby CritcherTodd J. FreebornIEEEarticleFlexible printed circuitswearable sensorsfailure analysistrace crackingbioimpedanceElectric apparatus and materials. Electric circuits. Electric networksTK452-454.4ENIEEE Open Journal of Circuits and Systems, Vol 2, Pp 732-742 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Flexible printed circuits wearable sensors failure analysis trace cracking bioimpedance Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4
spellingShingle	Flexible printed circuits wearable sensors failure analysis trace cracking bioimpedance Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4 Shelby Critcher Todd J. Freeborn Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
description	Wearable health monitoring systems that collect data in free-living environments are becoming increasingly popular. Flexible printed circuits provide a commercially available option that can conform to the shape of a wearable system and support electronic sensing and flexible interconnect. However, repetitive dynamic activity can stress and damage the interconnect of flexible PCBs which degrades data quality. This case study evaluated the performance of flexible PCBs providing interconnect between electrodes and sensing electronics for tissue bioimpedance measurements in a wearable system. Resistance data (1 kHz to 128 kHz) was collected from localized knee tissues of 3 participants using the wearable design with flexible PCBs over 7 days of free-living. From electrical and optical inspection after use trace cracking of the flexible PCBs occurred, degrading tissue resistances reported by the wearable system. Exploration of these results advances understanding of how flexible PCBs perform in free-living conditions for wearable bioimpedance applications.
format	article
author	Shelby Critcher Todd J. Freeborn
author_facet	Shelby Critcher Todd J. Freeborn
author_sort	Shelby Critcher
title	Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
title_short	Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
title_full	Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
title_fullStr	Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
title_full_unstemmed	Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study
title_sort	flexible pcb failures from dynamic activity and their impacts on bioimpedance measurements: a wearable case study
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/884a820f1f8f43b7a685336d6d3e6c22
work_keys_str_mv	AT shelbycritcher flexiblepcbfailuresfromdynamicactivityandtheirimpactsonbioimpedancemeasurementsawearablecasestudy AT toddjfreeborn flexiblepcbfailuresfromdynamicactivityandtheirimpactsonbioimpedancemeasurementsawearablecasestudy
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Flexible PCB Failures From Dynamic Activity and Their Impacts on Bioimpedance Measurements: A Wearable Case Study

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