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유용규(Yong Kyu Yoo),원인식(In Sik Won),문상찬(Sang Chan Moon),양효실(Hyo Sill Yang),이순걸(Soon-Geul Lee),이원구(Won Gu Lee) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Abnormal gaits such as in-toeing gait and out-toeing gait have been known to cause various types of physiological disorders in human body. Therefore, many researches up to date have been dedicated to solve this issue. However, many of the previous researches have been limited in that they hardly considered a minimal use of sensors to analyze abnormal gaits, leading to a low efficiency due to unwanted power consumption. Here, we aimed to examine what parameters or axes of the sensors can be minimized to tell a minute difference between normal and abnormal gait patterns. For this purpose, we synchronized a 9-axes motion sensor (accelerator, gyroscope, and compass) with force sensing resistor (FSR) sensors to compartmentalize the valid measurement range between heel strike(initial contact of the foot) and toe off (final contact of the foot). Through this synchronization, we found out how the number of axes in sensors could be optimized for minimal power consumption which is necessary for manufacturing wearable healthcare devices at an affordable cost.