本研究建立一具有動力驅動與量測功能之助行器系統。助行器由底部驅動平台與握桿組合而成，配合人體穿戴之力量感測裝置，在使用者使用助行器於站坐姿態轉換與行走時，即時記錄使用者所受外力。此外，以攝影機記錄人體運動姿態，再使用人體模擬軟體進行人體運動分析。在人體狀態資訊方面，以 Kinect 取像系統進行運動姿態捕捉並即時運算辨識人體骨架的關節座標;以力敏電阻量測腳底正向力搭配等效面積概念簡化腳底受力情形;以荷重元量測使用者支撐於助行器握把上的力量。感測器採用雙藍牙主機進行無線資料傳輸以減少有線傳輸帶來的運動限制。將量測到的資料搭配 OpenSIM 進行肌肉骨骼模型建模並計算出關節力矩以及肌肉出力。實驗結果顯示，此系統所評估之肌肉力量與關節力矩有一定可信度。

This study aims to establish a power-driven walking-aid system with measuring function. The system consists of a powered base and a stick. By wearing force sensors, external forces on the user during the transition from sitting to standing and walking can be recorded in real-time. Besides, the user’s movement is recorded with a camera and then analyzed with software. As for body state recording, Kinect system is used to record the user’s movement and identify the corresponding joint positions; force sensitive resistors are placed on the user’s feet to measure the normal force based on the equivalent-area simplification; load cells are installed on the handle of stick to measure the force that the user exerts on the walking-aid system. In particular, instead of using wired system, all measured data are transmitted with two Bluetooth devices to avoid hindering the user’s movement. At last, based on the measured data, OpenSIM is utilized to build up a human musculoskeletal model and then calculate the joint torques and muscle forces respectively. The final result shows that the estimated muscle forces and joint torques are at a certain degree of reliability.

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