Low-power,noninvasive measurement system for wearable ballistocardiography in sitting and standing positions |
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| Affiliation: | 1. College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, 310027, China;2. Key lab of Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, 310027, China;3. Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Hangzhou, 310027, China;1. University of Toronto Mississauga, Department of Biology, Mississauga, Canada;2. University of Toronto Mississauga, Communication, Culture, Information & Technology, Mississauga, Canada;1. Electrical, Computer, and Biomedical Engineering, University of Rhode Island, Kingston, RI, United States;2. Computer Science and Statistics, University of Rhode Island, Kingston, RI, United States;3. Textiles, Fashion Merchandising, and Design, University of Rhode Island, Kingston, RI, United States;4. Providence Veteran Affairs Medical Center, Providence, RI, United States;5. Department of Neurology, Rhode Island Hospital, Providence, RI, United States;1. Northeastern University, Shenyang, China;2. Nagoya Institute of Technology, Nagoya, Japan;1. PhD Student, Program for Research in Future Healthcare in the Interdisciplinary Graduate School (IGS), Nanyang Technological University, Singapore;2. PhD Student, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore;3. Postdoctoral Fellow, Biorobotics Institute, Scuola Superiore Sant’Anna, Pisa, Italy;4. Assistant Professor, School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore |
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| Abstract: | Ballistocardiography (BCG), the noninvasive measurement of the reaction forces of the body to the cardiac ejection of blood, is one of few methods available for unobtrusively assessing the mechanical aspects of cardiovascular health outside clinical settings. In this study, two sizes of piezoelectric film sensors were installed into the seat cushion of a chair and the foot insole, respectively, to acquire local BCG signals in sitting and standing positions. The design and engineering implementation of the signal processing circuit and data transmission system are discussed below. Although wearable BCG measurement devices have been extensively researched to date, to the authors’ knowledge, they have never been tested in regards to power consumption and electrostatic discharge (ESD) immunity. In this work, comprehensive experiments were conducted to show the low power consumption and high reliability of the proposed system. The shapes and the amplitudes of measured signals were examined in detail. The results suggest that the proposed system can feasibly and reliably be used to continuously record and evaluate cardiovascular changes occurring throughout an individual’s daily life. |
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| Keywords: | Ballistocardiography Non-invasive measurement Low power consumption Electrostatic discharge Wearable device |
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