Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease
| Autor: | James Dieffenderfer, Yong Zhu, Feiyan Lin, David B. Peden, Alper Bozkurt, Jason Strohmaier, Omer Oralkan, Bongmook Lee, Henry Goodell, Shanshan Yao, Michael McKnight, John F. Muth, Eric Beppler, Steven Mills, Veena Misra, Brinnae Bent |
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| Rok vydání: | 2016 |
| Předmět: |
Microphone
Real-time computing Monitoring Ambulatory Wearable computer 02 engineering and technology 01 natural sciences Article law.invention Electrocardiography Health Information Management law Photoplethysmogram Electric Impedance Humans Electrical and Electronic Engineering Photoplethysmography Skin business.industry 010401 analytical chemistry Continuous monitoring Equipment Design Wearable systems 021001 nanoscience & nanotechnology Asthma 0104 chemical sciences Computer Science Applications Power (physics) Spirometry Embedded system Chronic Disease Environmental science 0210 nano-technology business Cloud storage Spirometer Biotechnology |
| Zdroj: | IEEE Journal of Biomedical and Health Informatics. 20:1251-1264 |
| ISSN: | 2168-2208 2168-2194 |
| Popis: | We present our efforts towards enabling a wearable sensor system that allows for the correlation of individual environmental exposures to physiologic and subsequent adverse health responses. This system will permit a better understanding of the impact of increased ozone levels and other pollutants on chronic asthma conditions. We discuss the inefficiency of existing commercial off-the-shelf components to achieve continuous monitoring and our system-level and nano-enabled efforts towards improving the wearability and power consumption. Our system consists of a wristband, a chest patch, and a handheld spirometer. We describe our preliminary efforts to achieve a sub-milliwatt system ultimately powered by the energy harvested from thermal radiation and motion of the body with the primary contributions being an ultra-low power ozone sensor, an volatile organic compounds sensor, spirometer, and the integration of these and other sensors in a multimodal sensing platform. The measured environmental parameters include ambient ozone concentration, temperature, and relative humidity. Our array of sensors also assesses heart rate via photoplethysmography and electrocardiography, respiratory rate via photoplethysmography, skin impedance, three-axis acceleration, wheezing via a microphone, and expiratory airflow. The sensors on the wristband, chest patch, and spirometer consume 0.83, 0.96, and 0.01 milliwatts respectively. The data from each sensor is continually streamed to a peripheral data aggregation device and is subsequently transferred to a dedicated server for cloud storage. Future work includes reducing the power consumption of the system-on-chip including radio to reduce the entirety of each described system in the sub-milliwatt range. |
| Databáze: | OpenAIRE |
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