Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate

Abstract Many health diagnostic systems demand noninvasive sensing of respiratory rate, respiratory volume, and heart rate with high user comfort. Previous methods often require multiple sensors, including skin-touch electrodes, tension belts, or nearby off-the-body readers, and hence are uncomforta...

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Autores principales:	Pragya Sharma, Xiaonan Hui, Jianlin Zhou, Thomas B. Conroy, Edwin C. Kan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Computer applications to medicine. Medical informatics R858-859.7
Acceso en línea:	https://doaj.org/article/8e08baa661044c69b6dc126fb61c35c7
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spelling	oai:doaj.org-article:8e08baa661044c69b6dc126fb61c35c72021-12-02T18:46:55ZWearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate10.1038/s41746-020-0307-62398-6352https://doaj.org/article/8e08baa661044c69b6dc126fb61c35c72020-07-01T00:00:00Zhttps://doi.org/10.1038/s41746-020-0307-6https://doaj.org/toc/2398-6352Abstract Many health diagnostic systems demand noninvasive sensing of respiratory rate, respiratory volume, and heart rate with high user comfort. Previous methods often require multiple sensors, including skin-touch electrodes, tension belts, or nearby off-the-body readers, and hence are uncomfortable or inconvenient. This paper presents an over-clothing wearable radio-frequency sensor study, conducted on 20 healthy participants (14 females) performing voluntary breathing exercises in various postures. Two prototype sensors were placed on the participants, one close to the heart and the other below the xiphoid process to couple to the motion from heart, lungs and diaphragm, by the near-field coherent sensing principle. We can achieve a satisfactory correlation of our sensor with the reference devices for the three vital signs: heart rate (r = 0.95), respiratory rate (r = 0.93) and respiratory volume (r = 0.84). We also detected voluntary breath-hold periods with an accuracy of 96%. Further, the participants performed a breathing exercise by contracting abdomen inwards while holding breath, leading to paradoxical outward thorax motion under the isovolumetric condition, which was detected with an accuracy of 83%.Pragya SharmaXiaonan HuiJianlin ZhouThomas B. ConroyEdwin C. KanNature PortfolioarticleComputer applications to medicine. Medical informaticsR858-859.7ENnpj Digital Medicine, Vol 3, Iss 1, Pp 1-10 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Computer applications to medicine. Medical informatics R858-859.7
spellingShingle	Computer applications to medicine. Medical informatics R858-859.7 Pragya Sharma Xiaonan Hui Jianlin Zhou Thomas B. Conroy Edwin C. Kan Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
description	Abstract Many health diagnostic systems demand noninvasive sensing of respiratory rate, respiratory volume, and heart rate with high user comfort. Previous methods often require multiple sensors, including skin-touch electrodes, tension belts, or nearby off-the-body readers, and hence are uncomfortable or inconvenient. This paper presents an over-clothing wearable radio-frequency sensor study, conducted on 20 healthy participants (14 females) performing voluntary breathing exercises in various postures. Two prototype sensors were placed on the participants, one close to the heart and the other below the xiphoid process to couple to the motion from heart, lungs and diaphragm, by the near-field coherent sensing principle. We can achieve a satisfactory correlation of our sensor with the reference devices for the three vital signs: heart rate (r = 0.95), respiratory rate (r = 0.93) and respiratory volume (r = 0.84). We also detected voluntary breath-hold periods with an accuracy of 96%. Further, the participants performed a breathing exercise by contracting abdomen inwards while holding breath, leading to paradoxical outward thorax motion under the isovolumetric condition, which was detected with an accuracy of 83%.
format	article
author	Pragya Sharma Xiaonan Hui Jianlin Zhou Thomas B. Conroy Edwin C. Kan
author_facet	Pragya Sharma Xiaonan Hui Jianlin Zhou Thomas B. Conroy Edwin C. Kan
author_sort	Pragya Sharma
title	Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
title_short	Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
title_full	Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
title_fullStr	Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
title_full_unstemmed	Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
title_sort	wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/8e08baa661044c69b6dc126fb61c35c7
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_version_	1718377691016593408

Wearable radio-frequency sensing of respiratory rate, respiratory volume, and heart rate

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