A Low-Power Photoplethysmogram-Based Heart Rate Sensor Using Heartbeat Locked Loop
IEEE Transactions on Biomedical Circuits and Systems(2018)
Abstract
In this paper, we present an ultralow power heart rate (HR) monitoring photoplethysmography (PPG) sensor using a heartbeat locked loop (HBLL). The HBLL generates a narrow window that turns on the LED and analog-front-end only when a peak is expected in the PPG signal. The prototype PPG sensor implemented in 0.18 μm CMOS has an effective duty-cycle of 0.01% and consumes only 43.4 μW at a HR of 60 b...
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Key words
Light emitting diodes,Heart beat,Power demand,Low power electronics,Electrocardiography,Microsoft Windows
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