基于imu的水肺潜水员身体和小腿姿势测定

B. Groh, Tobias Cibis, R. O. Schill, B. Eskofier
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引用次数: 8

摘要

一种简单的水下姿势确定方法可以为水肺潜水的生物力学提供更深入的了解,从而改善教育和培训系统。在这项工作中,我们提出了一种基于惯性传感器的方法,用于确定鳍踢时上身和小腿方向的姿势。加速度计测量重力和陀螺仪为基础的方法,以确定绝对的身体角度,参照地面和角度变化的小腿在鳍踢。所提出的算法用从10名潜水员和基于摄像机的黄金标准获得的数据进行评估。分析结果的平均误差为0°,标准偏差为10°,用于上半身姿势的确定。确定了鳍踢之间转折点处的绝对柄角误差为0°±11°,相对柄角误差为0°±8°。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
IMU-based pose determination of scuba divers' bodies and shanks
A simple method for an underwater pose determination of scuba divers can provide a deeper insight in the biomechanics of scuba diving and thereby improve education and training systems. In this work, we present an inertial sensor-based approach for the pose determination of the upper body and the shank orientation during fin kicks. Accelerometer measurements of gravity and a gyroscope-based method are used to determine absolute body angles in reference to the ground and the angular change of the shanks during fin kicks. The proposed algorithms were evaluated with data acquired from ten divers and a camera-based gold standard. The results were analyzed to a mean error of 0° with a standard deviation of 10° for the upper body pose determination. The absolute angle of the shanks at the turning points between fin kicks was determined with an error of 0° ± 11°, the relative shank angle with an error of 0° ± 8°.
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