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A wireless body sensor network for arterial pulse wave (PW) measurements is presented and tested with ten subjects. The system is capable of recording both mechanical PW contours with sensors made of a low-cost polypropylene-based material called electromechanical film (EMFi) and volume pulse signal with photoplethysmographic transducers. By using both types of sensors, the PW contours can be recorded...
We propose an unobtrusive bed integrated system for monitoring physiological parameters during sleep. Our system u ses textile electrodes attached on the bed sheet for mea su ring multiple channels of electrocardiogram from which one at a time is selected for RR-interval detection and force sensors located under a bed post for detecting breathing and movements. The movement information is also used...
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....
A miniature wireless node for ECG measurements is presented. The ECG node is designed to be used in various applications including measurement of heart rate during physical exercise and continuous long term measurement of ECG for people assumed having, or being recovering from a cardiac disease. The ECG node is wirelessly connected to a computer using IEEE 802.15.4 based radio protocol. The device...
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