| Title |
A Study on the Detection Characteristics of the Magneto-Plethysmography According to Fluid Properties |
| Authors |
김상민(Sang-Min Kim) ; 이강휘(Kang-Hwi Lee) ; 이성수(Seong-Su Lee) ; 이혁재(Hyeok-Jae Lee) ; 이병헌(Byoung-Hun Lee) ; 김경섭(Kyeoung-Seop Kim) ; 이정환(Jeong-Whan Lee) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.7.946 |
| Keywords |
Blood-Simulator ; Magneto-plethysmography ; Photo-Plethysmography ; PPG ; MPG |
| Abstract |
Photo-plethysmography (PPG), which measures changes in the peripheral blood flow of a human body using difference in absorption rate of light, is a measurement method that is studied and used in clinical and various applications due to its simple circuit configuration and measurement convenience. Magneto-plethysmography (MPG), which is newly developed by our team, is a method of measuring changes in the conductivity of biological tissues by using a eddy current induced by a time-varying magnetic field, and is not subject to optical interference. In this study, we investigated the detection characteristics of MPG according to the change of the conductivity of the object and fluid to be measured by simultaneously measuring PPG and MPG. In order to control the speed of fluid known in advance, a blood flow simulator was implemented and used. The fluid used in the experiment was general mineral water and physiological saline (0.9% NaCl) solution. Experimental results show that the amplitude change of the measured PPG was 0.3% in normal water and saline solution, and that of MPG was 77.3%. Therefore, it is considered that the magneto-plethysmography (MPG) has a strong correlation with the conductivity of the fluid. |