Sinabro: A Smartphone-Integrated Opportunistic Electrocardiogram Monitoring System

Author： Kwon Sungjun Lee Dongseok Kim Jeehoon Lee Youngki Kang Seungwoo Seo Sangwon Park Kwangsuk

Publisher： MDPI

E-ISSN： 1424-8220|16|3|361-361

ISSN： 1424-8220

Source： Sensors, Vol.16, Iss.3, 2016-03, pp. : 361-361

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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.