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A system for unobtrusive night-time electrocardiogram (EKG) and heart rate variability (HRV) monitoring as well as data analysis methods are presented, comparing bed sheet HR and HRV values with corresponding parameters obtained by a reference measurement. Our system uses eight embroidered textile electrodes attached laterally to a bed sheet for measuring bipolar contact EKG from multiple channels...
We propose a method for night time monitoring of heart rate. Our method uses one or more pressure sensitive elements integrated into a wristwatch. The sensing elements are made of film type electret material called EMFi (Electro Mechanical Film). We designed the signal processing algorithms keeping in mind on-line processing and later integration into a micro controller for wearable applications....
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