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Kim A.-H.,BK21 Plus Research Institute of Biomedical Engineering | Kim J.-S.,BK21 Plus Research Institute of Biomedical Engineering | Oh H.-B.,BK21 Plus Research Institute of Biomedical Engineering | Goh B.-J.,BK21 Plus Research Institute of Biomedical Engineering | And 5 more authors.
Transactions of the Korean Institute of Electrical Engineers | Year: 2015

The measurement and analysis of angular change have been studied in many fields. This study developed an angle measurement technique with optical fiber and photodiode. The position and attached angle of photodiode were investigated to find the proper combination of parameter. The results showed that the increased measuring range was achieved when the position of detector was away from the center of rotation. Inverse mathematical model was used to obtain angular changes with an optical fiber. The applications of this study include in optical sensor, joint angle measurement, and sport science. Copyright © The Korean Institute of Electrical Engineers.


Oh H.-B.,BK21 Plus Research Institute of Biomedical Engineering | Kim J.-S.,BK21 Plus Research Institute of Biomedical Engineering | Kim A.-H.,BK21 Plus Research Institute of Biomedical Engineering | Goh B.-J.,BK21 Plus Research Institute of Biomedical Engineering | And 3 more authors.
Transactions of the Korean Institute of Electrical Engineers | Year: 2015

Joint angle generally can be measured to check the recovery process in rehabilitation field. This paper suggests to measure joint angle with Infrared sensor based on triangulation principle. We performed various experiments to find the optimal condition of the sensor's attached distance, height, and angle. The results were compared with commercial goniometer for accuracy. The proposed infrared joint angle sensor can be effectively used in rehabilitation and sport science fields. Copyright © The Korean Institute of Electrical Engineers.

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