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u-헬스케어 시스템에서 지그비를 이용한 손목형 생체 신호 측정 단말기 설계 및 구현
장문석(M. S. Jang),이응혁(E. H. Lee),최상방(S. B. Choi) 한국재활복지공학회 2010 한국재활복지공학회 학술대회논문집 Vol.2010 No.11
Most of existing biomedical signal measurement devices measure and evaluate biomedical signal only in a single device. Also, even if the device is multi -functional, those biomedical signals can be measured by selection of the user. In this paper, we implemented wristband-style biomedical signal measurement device for u-healthcare system to solve the problem above. Implemented device uses 4 infrared sensors to measure the pulse, 2 electrodes to measure the skin conductivity, and 3-axis accelerometer to measure momentum. Also, we propose a communication packet frame for transmitting biomedical signal data to PC or mobile device, using Zig bee. Studies show that our device has the error rate of less than twice for pulse measurement, 85.6%, 84.7% reliability for momentum measurement, and the skin conductivity has changed according to the user"s physical status.