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Sensors 2016, 16(5), 750; doi:10.3390/s16050750

Sleep Monitoring Based on a Tri-Axial Accelerometer and a Pressure Sensor

1
Department of Computer Science and Engineering, Soonchunhyang University, Asan 336-745, Korea
2
Department of Civil & Environmental Engineering, Worcester Polytechnic Institute, Worcester, MA 01607, USA
3
Department of Biomedical Engineering, Wonkwang University School of Medicine, Iksan, Jeonbuk 570-749, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Steffen Leonhardt and Daniel Teichmann
Received: 10 March 2016 / Revised: 10 May 2016 / Accepted: 17 May 2016 / Published: 23 May 2016
(This article belongs to the Special Issue Wearable Biomedical Sensors)
View Full-Text   |   Download PDF [5125 KB, uploaded 23 May 2016]   |  

Abstract

Sleep disorders are a common affliction for many people even though sleep is one of the most important factors in maintaining good physiological and emotional health. Numerous researchers have proposed various approaches to monitor sleep, such as polysomnography and actigraphy. However, such approaches are costly and often require overnight treatment in clinics. With this in mind, the research presented here has emerged from the question: “Can data be easily collected and analyzed without causing discomfort to patients?” Therefore, the aim of this study is to provide a novel monitoring system for quantifying sleep quality. The data acquisition system is equipped with multimodal sensors, including a three-axis accelerometer and a pressure sensor. To identify sleep quality based on measured data, a novel algorithm, which uses numerous physiological parameters, was proposed. Such parameters include non-REM sleep time, the number of apneic episodes, and sleep durations for dominant poses. To assess the effectiveness of the proposed system, three participants were enrolled in this experimental study for a duration of 20 days. From the experimental results, it can be seen that the proposed monitoring system is effective for quantifying sleep quality. View Full-Text
Keywords: health care; sleep monitoring; sleep apnea; pressure sensor; heart rate variability; breathing; sleeping pose; polysomnography health care; sleep monitoring; sleep apnea; pressure sensor; heart rate variability; breathing; sleeping pose; polysomnography
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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Nam, Y.; Kim, Y.; Lee, J. Sleep Monitoring Based on a Tri-Axial Accelerometer and a Pressure Sensor. Sensors 2016, 16, 750.

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