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In this study, detection system of the blood flow variation rate was implemented using the variation effect of bio electric impedance at time of the blood pressure measurement by means of impedance method. The blood pressure measurement was performed by the oscillometric method. The mean arterial pressure was calculated using maximum amplitude algorithm. The systolic and diastolic pressure were estimated by establishment of the various characteristic ratio according to mean arterial pressure range. Alternative static current source and lock_in amplifier were introduced to impedance measurement. The variation of blood volume was measured using variation bio impedance according to induced cuff pressure at measuring area. Key Words : Impedance, Blood Pressure, Blood flow, Oscillometric Method, Mean Arterial Pressure     (2)  . *  : (grjeon@pusan.ac.kr) 09 05 12  09 08 06  09 08 19 1.            .                   [1].             ,           .                     .          .      ,

Implementation of the Blood Pressure and Blood Flow Variation Rate Detection System using Impedance Method