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최정현(J. H. Choi),조종만(J. M. Cho),박준호(J. H. Park) 한국재활복지공학회 2008 한국재활복지공학회 학술대회논문집 Vol.2008 No.11
In this study we developed an improved model of the previous automatic ankle stretching device (ASD) by using electro-mechanical cylinders which have built-in encoders. Also, a user friendly human-computer interface (Her) device was developed and employed for this device to provide patients with easy access to the ASD and effective visual feedback of the training activity. It can reduce the workload of physical therapists and improve the effect of rehabilitation exercise for lower limb monoplegia patients.
재활 훈련중인 환자를 위한 다채널 무구속 심박동수 모니터링 시스템
조종만,최정현,박준호,남태우,은종민,Cho, J.M.,Choi, J.H.,Park, J.H.,Nam, T.W.,Eun, J.M. 대한의용생체공학회 2008 의공학회지 Vol.29 No.3
This research focused on the development of wireless telemetry system that can monitor heart rates of multiple rehabilitation patients in real time without constraint. The whole system consists of the multiple patient's side devices (PSDs) and one central monitoring system (CMS). The PSD consists of a microphone, amplifier, filter, microcontroller, and RF (Radio Frequency) modem. In addition, the PSD was designed to be wearable and low power consumption. The CMS consists of an RF modem and general PC and it was designed to monitor heart rates from multiple patients simultaneously. The system warns an alarm signal when a patient's heart rate exceeds the pre-set range for each patient. This system can be useful to monitor the heart rate of exercising rehabilitation patients and control the patients condition and the exercising level.
편마비 환자의 보행 자세 교정을 위한 보행 양상 검출 장치(II)
박준호(J. H. Park),조종만(J. M. Cho),최정현(J. H. Choi) 한국재활복지공학회 2008 한국재활복지공학회 학술대회논문집 Vol.2008 No.11
This paper describes the design and development of gait phase analyzing devices which are key components consisting of the gait training equipment for hemiplegia patients. The devices should be durable against the friction of rotating rubber belt of the gait training equipment and robust to the mechanical vibration caused by the operation of the gait training equipment so that they can detect the gait phase accurately during training. We could develop the gait phase analyzing device that can satisfy these criteria by designing and implementing of two new devices, a magnet shoe and magnetic sensor array board. The magnet shoe has three rows of magnetic sensor array and each row has different number of permanent magnets so that which parts of the shoe are touched to the magnet sensor array board. In addition, the shoe was designed as an overshoe so that a patient can attach and detach the shoe easily. The magnet sensor array board has 1,620 magnetic sensors which are arranged in 30 rows and each row consists of 54 magnetic sensors where the distance between sensors is 2 ern in horizontal and vertical direction. The experiment results show that they have spatial resolution of I cm in horizontal and vertical directions and temporal resolution of 20 frames per second of the gait phase. The gait phase analyzing devices developed in this study were incorporated into the design . of gait training equipment for hemiplegiapatients and they showed feasibility in practical operating environment. They also can be applied to other similar equipment which needs the gait phase analysis function.