Capturing human motion using body-fixed sensors: outdoor measurement and clinical applications
Capturing human motion using body-fixed sensors: outdoor measurement and clinical applications
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DOI：
10.1002/cav.2
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发表时间：
2004-05-01
影响因子：
1.1
通讯作者：
Najafi, Bijan
中科院分区：
文献类型：
--
作者：
Aminian, Kamiar;Najafi, Bijan
运动捕捉主要基于光学、磁性或声波技术的油标系统。在本文中，检测有用的人体运动的新技术的基础上，使用不同类型的身体固定的传感器的可能性。特别是，加速度计和角速率传感器（陀螺仪）的组合显示了一种有前途的设计，用于测量身体部分的2D运动学的混合运动学传感器。传感器与便携式数据记录器一起使用，并使用简单的生物力学模型，可以捕获户外和长期运动，并克服标准运动捕获系统的一些限制。身体运动的重要参数，如运动的性质（姿势转换，躯干旋转，坐，站，躺，走，跳）和它的时空特征（速度，位移，角旋转，节奏和持续时间）进行了评估和比较的相机为基础的系统。基于这些参数，本文概述了在日常环境中监测身体活动和进行步态分析的可能性，并回顾了与老年人跌倒风险、生活质量、骨科结局和运动表现相关的几项临床研究。利用这些身体固定传感器的潜力，对于运动捕捉来说应该是有希望的，特别是在不适合标准技术的环境中，例如在任何野外活动中。版权所有（C）2004约翰威利父子有限公司。
Motion capture is mainly based oil standard systems using optic, magnetic or sonic technologies. In this paper, the possibility to detect useful human motion based on new techniques using different types of body-fixed sensors is shown. In particular, a combination of accelerometers and angular rate sensors (gyroscopes) showed a promising design for a hybrid kinematic sensor measuring the 2D kinematics of a body segment. The sensors together with a portable datalogger, and using simple biomechanical models, allow capture of outdoor and long-term movements and overcome some limitations of the standard motion capture systems. Significant parameters of body motion, such as nature Of motion (postural transitions, trunk rotation, sitting, standing, lying, walking, jumping) and its spatio-temporal features (velocity, displacement, angular rotation, cadence and duration) have been evaluated and compared to the camera-based system. Based oil these parameters, the paper outlines the possibility to monitor physical activity and to perform gait analysis in the daily environment, and reviews several clinical investigations related to fall risk in file elderly, quality of life, orthopaedic outcome and sport performance. Taking advantage of till the potential of these body-fixed sensors should be promising for motion capture and particularly in environments not suitable for standard technology such as in any field activity. Copyright (C) 2004 John Wiley & Sons, Ltd.