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http://dx.doi.org/10.5369/JSST.2006.15.2.106

Implementation and evaluation of the sensor assessing pressure and photoplethysmogram  

Kim, Gi-Ryon (PhysioLab Co. Ltd.)
Kim, Gwang-Nyeon (PhysioLab Co. Ltd.)
Choi, Byeong-Cheol (Dept. of Medical Engineering, Choonhae College)
Jeon, Gye-Rok (Dept. of Biomedical Engineering, College of Medicine, Pusan National University)
Ham, Ki-Young (Dept. of Medical Engineering, College of Medicine, Dong-A University)
Suh, Duk-Joon (Dept. of Medical Engineering, College of Medicine, Dong-A University)
Jung, Dong-Keun (Dept. of Medical Engineering, College of Medicine, Dong-A University)
Publication Information
Journal of Sensor Science and Technology / v.15, no.2, 2006 , pp. 106-111 More about this Journal
Abstract
Pulse sensors generally have characteristics that cause a analytical error by the interference of signals according to tiny motion of body and pressure applied to skin. To resolve this problem, we implemented the sensor that is capable of simultaneously measuring pressure and PPG(photoplethymogram) in a state attached to skin. Pressure and PPG was recorded at the finger and wrist respectively to evaluate the usefulness of the implemented sensor. Then, it was observed that the shape of PPG from sensor changed by pressure pushing down skin. Results of this study suggested that it is possible to monitor a degree of skin pressurization and to guarantee a reliable measurement by simultaneously measuring pressure and PPG using implemented integrated sensor when measuring PPG on the wrist or the finger.
Keywords
PPG; pressure wave; pulse sensor;
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