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최상대(S. D. Choi),김미선(M. S. Kim),안명천(M. C. Ahn),최영근(Y. G. Choi),김기왕(G. W. Kim),박달호(D. H. Park),황도근(D. G. Hwang),이상석(S. S. Lee) 한국자기학회 2006 韓國磁氣學會誌 Vol.16 No.4
The electric signals for the voltage as a function of distance between Hall devices and permanent magnets over the radial artery were investigated. The electric signals, that means signals of arterial pulse wave, were differentiated by the hardware of circuits and then were changed to differential signals as magnetic field. The 3-D images simulated by the software as function of the intensity of differential signals were achieved. It shows that these system can apply to pulse diagnostic apparatus of portable type medical instrument.
2차원 배열 자기저항소자를 이용한 공간 맥진파형의 전산모사 분석
김미선(M. S. Kim),김선욱(S. W. Kim),김기왕(G. W. Kim),이수진(S. J. Lee),이선구(S. G. Lee),이현숙(H. S. Lee),박달호(D. H. Park),황도근(D. G. Hwang),이상석(S. S. Lee) 한국자기학회 2005 韓國磁氣學會誌 Vol.15 No.6
To get the spatial feature of arterial pulse, we designed spatial pulse diagnostic apparatus (SPDA) using a 2-dimensional magnetoresistive sensor array. The magnetic field distribution for magnet array was simulated using finite element method. We recognized that the field distribution of parallel magnet arrays was more sensitive and uniformed than that of perpendicular one. Also the spatial displacements of magnet array were agreed with the output signal of magnetic tunnel junction (MTJ) sensor array.