Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 1 윤지선 2010103804 윤지선 2014.06.10.

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Presentation transcript:

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 1 윤지선 윤지선

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 2 윤지선 Z ↑ V(T) ↓ I +V-+V-

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 3 윤지선 최대의 SNR 로 Z 를 측정한다. T t

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 4 윤지선 최대의 SNR 로 Z 를 측정한다. V(t) X X Im Re Z

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 5 윤지선 Im Re Z Z

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 6 윤지선 안전하지 않은 예 ampADCMP Digital DC Power Supply Earth GND 를 사용하는 이유 : 송전해주는 곳과 같은 GND 를 사용해야 하므로 H N G 환자 몸이 Earth GND 에 연결되어 있으면 안됨 환자 몸에 연결된 회로단자에 Earth GND 가 있으면 안됨 환자 몸에 연결된 dc supply 에 Earth GND 가 있으면 안됨

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 7 윤지선 안전한 설계 방법 1 amp ADC MP Isolation barrier LED Isolation, Floatingearth ground MP DisplayCom Power supply Hot N G Optocoupler

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 8 윤지선 안전한 설계 방법 2 Isolation barrier Isolation, Floatingearth ground Hot N 정류기 절연되어 있지만 자장을 통해 신호가 전달된다. Isolation Transform 안전한 설계 방법 3 Isolation barrier Isolation, Floating earth ground DC-DC Convertor DC-DC Convertor G

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 9 윤지선 안전한 설계 방법 4 Isolation barrier 전원 배터리 무선을 이용한 방법

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 10 윤지선