금 전극을 이용한 동물 조직 내 임피던스 측정연구
A Study on the Measurement of Impedance in Animal Tissue Using Gold Electrodes
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초록
생체임피던스 측정법은 편리성, 저비용 및 저가의 장치를 이용하여 생체정보 획득 및 피부 병 진단 등에 사용 가능한 장치이다. 본 연구에서는 생체 삽입형으로 생체 정보를 획득하기 위해서 동물 생체 모델링을 통한 시뮬레이션 연구와 직접 제작한 건식용 금 전극을 이용하여 생체임피던스를 측정하였다. 동물 조직의 피하부위에 전극을 삽입하여 2 전극법으로 100 uA,1-100 kHz 주파수를 인가하여 임피던스를 측정하였다. 측정결과 전극의 사이즈를 5 mm전극기준으로 7.5 mm, 10 mm전극과비교하여 저항을 측정한 결과 5 mm 전극에서 높게 측정됨을 확인할 수 있다. 5 mm전극을 기준으로 7.5 mm 전극은 전체주파수 범위에서 평균 1.49 %차이를 발견하였고, 10 mm 전극은 2.624 %로 임피던스가 차이남을 확인하였다. 향후, 연구결과는 생체 삽입형 심전도 센서 전극 설계 및 제작 등에 활용가치가 있을 것으로 사료된다.
Abstract
Bio-impedance measurement is a measurement device that can be used to obtain biometric information and diagnoseskin diseases using convenience, low cost, and low cost devices. In this study, the bio-impedance was measured usinga direct dry gold electrode and a simulation study through animal bio modeling to obtain biometric information in abiometric form. Impedance was measured by inserting electrodes into subcutaneous areas of animal tissue and applyingfrequencies of 100 uA, 1-100 kHz using a two-electrode method. As a result of the measurement, the resistance of theelectrodes is measured high at 5 mm electrodes compared to 7.5 mm and 10 mm electrodes based on 5 mm electrodes. Based on the 5 mm electrode, an average difference of 1.49% was found for the 7.5 mm electrode in the total frequencyrange, and the impedance difference was confirmed to be 2.624% for the 10 mm electrode. In the future, the researchresults are expected to be valuable in designing and manufacturing electrodes for bio-inserted electrocardiogram sensors.
참고문헌 (6)
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