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In order to implement an unobstructed assessment of three-dimensional (3-D) gait, we developed a mobile force plate and 3-D motion analysis system (M3D) to measure triaxial ground reaction forces (GRF) and 3-D orientations of feet. Calibration and test experiments were conducted to characterize the sensor developed. To test the accuracy of the new measurement system, validation experiments by using...
In this paper, a group of new multi-axis MEMS sensors including triaxial gyroscope (ITG-3200), triaxial accelerometer (ADXL345) and triaxial magnetometer (HMC5843) are incorporated to develop a motion sensor with nine degrees of freedom (9D), which can communicate with personal computer through a Bluetooth wireless module. A simplified three-dimensional orientation estimation method is proposed in...
In this paper, a group of new multi-axis MEMS sensors including triaxial gyroscope (ITG-3200), triaxial accelerometer (ADXL345) and triaxial magnetometer (HMC5843) are incorporated to develop a nine degrees of freedom (9D) motion sensor, which can communicate with personal computer through a Bluetooth wireless module. A simplified Kalman filter is proposed in this paper to implement real-time estimation...
In walking analysis, which is one useful method for efficient physical rehabilitation, the ground reaction force, the center of pressure, and the body orientation data are measured during walking. In the past, these data were measured by a 3D motion analysis system consisting of high-speed cameras and force plates, which must be installed in the floor. However, a conventional 3D motion analysis system...
In order to implement an unobstructed assessment of walking gait, we proposed a mobile force plate and three-dimensional motion analysis system (M3D) to measure triaxial ground reaction forces (GRF) and three-dimensional orientations of feet. To test accuracy of the new measurement system, verification experiments by using reference measurements of a commercially available measurement system were...
An original approach for ambulatory measurement and analysis of lower limb 3D gait posture was presented, and a wearable sensor system was developed according to the approach. To explicate the lower limb posture, thigh orientation angles were calculated based on a virtual sensor at the hip joint and double analog inertial sensors (MAG3) on the thigh; Knee joint angle in sagittal plane was calculated...
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