Development of real-time knee joint angle measurement technology for posture analysis monitoring

The purpose of this study is to propose a system that can distinguish, analyze, and monitor dynamic and static postures in real time by measuring the knee joint angles of elderly and persons with disability whose capacity to perform lower limb movements in their daily life has been weakened. The proposed posture analysis monitoring system measures the knee joint angle using the wearable module's inertial measurement unit and potentiometer, and then transmits the data to a smartphone through Bluetooth communication. The smartphone application with dynamic and static posture classification algorithm can be used to monitor the user's posture in real time and for future analysis by storing data.