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Sensors 2016, 16(3), 361; doi:10.3390/s16030361

Sinabro: A Smartphone-Integrated Opportunistic Electrocardiogram Monitoring System

1
Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 08826, Korea
2
School of Information Systems, Singapore Management University, Singapore 178902, Singapore
3
School of Computer Science and Engineering, KOREATECH, Cheonan, 31253, Korea
4
The 7th R&D Institute, Agency for Defense Development, Daejeon, 32024, Korea
5
Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Ki H. Chon
Received: 4 February 2016 / Revised: 2 March 2016 / Accepted: 7 March 2016 / Published: 11 March 2016
(This article belongs to the Special Issue Smartphone-Based Sensors for Non-Invasive Physiological Monitoring)
View Full-Text   |   Download PDF [2492 KB, uploaded 11 March 2016]   |  

Abstract

In our preliminary study, we proposed a smartphone-integrated, unobtrusive electrocardiogram (ECG) monitoring system, Sinabro, which monitors a user’s ECG opportunistically during daily smartphone use without explicit user intervention. The proposed system also monitors ECG-derived features, such as heart rate (HR) and heart rate variability (HRV), to support the pervasive healthcare apps for smartphones based on the user’s high-level contexts, such as stress and affective state levels. In this study, we have extended the Sinabro system by: (1) upgrading the sensor device; (2) improving the feature extraction process; and (3) evaluating extensions of the system. We evaluated these extensions with a good set of algorithm parameters that were suggested based on empirical analyses. The results showed that the system could capture ECG reliably and extract highly accurate ECG-derived features with a reasonable rate of data drop during the user’s daily smartphone use. View Full-Text
Keywords: opportunistic sensing; unobtrusive sensing; smartphone-integrated; phone case-type; ECG; sensor opportunistic sensing; unobtrusive sensing; smartphone-integrated; phone case-type; ECG; sensor
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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MDPI and ACS Style

Kwon, S.; Lee, D.; Kim, J.; Lee, Y.; Kang, S.; Seo, S.; Park, K. Sinabro: A Smartphone-Integrated Opportunistic Electrocardiogram Monitoring System. Sensors 2016, 16, 361.

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