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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 1Park Jun-hwan Medical Instrumentation #11 제출일 : 2014. 06. 10. 생체의공학과 2010103789 박 준 환 Phase Sensitive Demodulation, Design for Electrical Safety
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 2Park Jun-hwan * Bioimpedence 의 측정 Z Vm +V-+V-
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 3Park Jun-hwan 1. Phase-sensitive Demodulation 최대의 SNR 로 Z 를 측정한다. X X
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 4Park Jun-hwan 1. Phase-sensitive Demodulation 최대의 SNR 로 Z 를 측정한다. : 실수부, In-phase Component : 허수부
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 5Park Jun-hwan 2. Design for Electrical Safety DC Power Supply H(220V) N G Touch Amp ADCuP Display * 안전하지 않는 예 ( 공통기준점 사 용 ) : 전류가 몸을 통해 그라운드로 이 동 - 심한 경우 감전사 전류의 흐름
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 6Park Jun-hwan 2. Design for Electrical Safety 설계방법 1 : isolation barrier 를 만든다. Amp ADCuP isolation barrier isolation flotting Earth grounded 우리가 정한 Ground LED Opto-Coupler : 빛에 의해 기준전압이 바뀜 [Photo Transister] ‘ 빛으로 신호전달 ’ uP Display 통신 빛
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 7Park Jun-hwan 2. Design for Electrical Safety H 자장을 이용하여 신호를 이동 정류기 N DC-DC Converter 잡음이 없다 발진, 고주파의 주파수 정류
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 8Park Jun-hwan 2. Design for Electrical Safety 설계방법 2 : 무선통신 isolation barrier Display 전원 Battery 무선
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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 9Park Jun-hwan 감사합니다.
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