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우승진(Seung-Jin Woo),김동준(Dong-Jun Kim) 한국정보기술학회 2011 Proceedings of KIIT Conference Vol.2011 No.5
This paper presents a body pressure evaluation method in human sensibility using a bimedical signal. For this objective, firstly, electroencephalogram(EEG) signal for relaxed state is collected. Then, the waist belt of the subject is tightened about 90% of normal state. After a few minutes, the belt of the subject is released. Some necessary preprocessing is performed on the acquired signals, Linear Prediction (LP) coefficients are utilized as the feature parameters extracting the characteristics of EEG signal, and a multi-layer neural network is used for indicating the state of body pressure. The results of the method showed 77.2% of coincidence with body pressure states. This may be compromising results for subject independent sensibility evaluation using EEG signal.
김동준(Dong-Jun Kim),우승진(Seung-Jin Woo) 대한전기학회 2011 전기학회논문지 Vol.60 No.6
This paper presents a waist pressure evaluation method in human sensibility using a electroencephalogram(EEG) signal. For this objective, a size-controllable waist-belt is used. First of all, EEG signals for relaxed state are acquired. Then, the waist-belt of the subject is tightened about 90% of normal state. After a few minutes, the belt of the subject is released. Some necessary preprocessing is performed on the acquired signals, Linear Prediction (LP) coefficients are utilized as the feature parameters extracting the characteristics of EEG signal, and a multi-layer neural network is used for indicating the state of body pressure. The results of the method showed 77.2% of coincidence with body pressure states. This may be compromising results for ssubject-independent sensibility evaluation using EEG signal.
원격 진료를 위한 Healthcare Chair System의 개발
이현민(Hyun-Min Lee),우승진(Seung-Jin Woo),김동준(Dong-Jun Kim),이강휘(Kang-Hwi Lee),이정환(Jeong-Whan Lee),김경섭(Kyeong-Seop Kim) 한국정보기술학회 2007 Proceedings of KIIT Conference Vol.2007 No.-
기존의 건강 진료는 반드시 직접 병원에 가야하므로, 시간과 돈이 많이 들며 자주 건강 진료 받기가 힘들었다. 또한, 생체 신호 정보의 저장 및 기록이 불가능하므로, 진료 시 임상의사에 의해서만 순간적으로 진단되고, 다음 진료 때에는 환자의 상태를 기억하지 못하므로 객관적 판단이 쉽지 않다. 따라서, 본 연구에서는 의자를 이용한 가정과 병원간의 원격진료 시스템에 적용하기 위한 Healthcare Chair System을 개발하고자 하였다. 개발된 Healthcare Chair System은 3가지 생체 신호(ECG, SpO2, NIBP)를 수집, 저장, 분석 할 수 있으며, 인간의 감성평가를 통해 Biofeedback을 이용한 Music Therapy를 기능을 가지고 있다. This study presents a healthcare chair system that contains biomedical signal acquisition modules, personal computer and software to extract and display clinical parameters of the signals, and can transmit the signal through communication networks. The chair system collects, stores, and analyses three biomedical signals, such as electrocardiogram(ECG), SpO2, noninvasive blood pressure(NIBP). Using the signal various functions, such as automatic diagnosis, biofeedback can be developed. Currently human sensibility evaluation algorithm and a tool for biofeedback for negative sensibility are developed.
맥파를 이용한 감성평가 및 Biofeedback 기술의 개발
이현민(Hyun-Min Lee),김동준(Dong-Jun Kim),우승진(Seung-Jin Woo),양희경(Heui-Kyung Yang),김경섭(Kyeong-Seop Kim),이정환(Jeong-Whan Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.10
This study describes a method of a human sensibility evaluation using photoplethysmogram(PPG) signal and a biofeedback algorithm to enhance the sensibility. For this objective, the heart rate variability(HRV) is extracted from the PPG signal and using the HRV and its FFT the human sensibility is evaluated. The biofeedback algorithm is designed with motion image player interacting with the results of sensibility evaluation. The sensibility evaluation test showed feasibility of the designed method.
김동준(Kim, Dong-Jun),이현민(Lee, Hyun-Min),우승진(Woo, Seung-Jin),이주신(Lee, Ju-Shin),이정환(Lee, Jeong-Whan),김경섭(Kim, Kyeong-seop) 한국정보전자통신기술학회 2008 한국정보전자통신기술학회논문지 Vol.1 No.3
본 연구에서는 기존의 청진기를 대체할 수 있으며, 멀티미디어 PC에 연결할 경우 청진음의 저장이 가능하여 병원에 직접 방문하지 않고 가정에서 청진음을 저장하고 초고속 통신망을 통해 병원에 전송함으로써 가정에서도 쉽게 정기적인 검진이 가능한 홈 헬스케어를 위한 무구속 정자청진 모듈을 개발하고자 하였다. 이를 위하여 저잡음, 고이득, 저전력 그리고 저전압 구동의 특징을 갖도록 전자청진기용 증폭기를 설계하였으며, 제작된 전자청진 회로를 이용하여 심음 측정에 중요한 요소로 판단되는 집음기를 재질, 크기별로 제작하여 테스트 하였다. This paper describes a wearable electro-stethoscope module for home-healthcare system. The module is consisted of a microphone, an instrumentation amplifier, a filter, a power amplifier etc. and is light and small. The phonogram signal from the module shows good performance. The test for the material and size of the sound collector of the chest piece is performed and the results is reflected on the prototype product. If the module is connected to wired or wireless communication network, so people can check their health without going hospital.