Dept of Biomed Eng BME 302 Medical Instrumentation
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Medical Instrumentation REPORT #3 2012103843 원지혜 1 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Dynamic Characteristics Y(t) X(t) (입력) (출력) 2 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Laplace Transform Differential equation Laplace Transform Response in time domain Inverse Laplace Transform 3 Algebraic equation Response in S domain 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Laplace Transform u(t) 4 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Transfer Function + Vc(t ) - 5 원지혜 t
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 0차 기기 (1 -K)R KR 10 입력 K 출력 t 6 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 1차기기 예) 1 t 올라가는 데에 시간이 걸림(0차기기에 비해) 7 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 무왜곡측정 (Distortionless Measurement) X(t) =x 1(t)+x 2(t) H y 1(t ) A x 1(t ) 1 X(t) 2 x 2(t ) 1 Y(t) 2 A y 2(t ) A 9 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 예) 진폭 특성에 의한 왜곡 y(t) 3 A 2 A A t t -A -2 A Magnitude Distortion 10 원지혜 t
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 예) 위상특성에 의한 왜곡 y(t) 2 A A A t t Phase Distortion 11 원지혜 t
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. For Distortionless Measurement 같은 크기로 증가시키고, 같은 위상 차를 주어 야 왜곡이 발생하지 않음 ∠H(jw) |H(jw)| 왜곡이 발생하지 않음 w w 12 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Biopotential(생체전위) (axon) Sensor Muscle dendrite(수상돌기) axon terminal(축색 종말) Ex) ①rode, cone ②hair cell 13 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. Resting Membrane Potential(RMP: 안정막전위) <Krebs Cycle in Mitochondria> Glucose + O 2 CO 2 + H 2 O + ATP Na-K 펌프 농도 차를 거슬러 가야 하기 때문에 ATP 필요(미토콘드리아에서 만듦) 14 원지혜
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. RMP의 측정 t=t 1 ① V=0 (Na와 Cl이 균일하게 들어있으므로 ) Vo Cell neuron V t 1 t Na+ -60 m. V 15 원지혜 Cl-
Dept. of Biomed. Eng. BME 302: Medical Instrumentation Kyung Hee Univ. 세포막의 형태 ③ ① V Na+ V V=0 Cl- V=0 permeable membrane (Na와 Cl이 균일하게 들어있으므로 ) Na+ Cl- ④ ② V Na+ Cl- V V=0 Na+ Cl- insulating membrane 16 Na+ Cl- semi permeable membrane 원지혜 세포막은 반투과성막
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