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Efficient Multiaxial Shoulder-Motion Tracking Based on Flexible Resistive Sensors Applied to Exosuits.
Soft Robotics ( IF 7.9 ) Pub Date : 2020-06-02 , DOI: 10.1089/soro.2019.0040
J Luis Samper-Escudero 1 , Aldo F Contreras-González 1 , Manuel Ferre 1 , Miguel A Sánchez-Urán 1 , David Pont-Esteban 1
Affiliation  

This article describes the performance of a flexible resistive sensor network to track shoulder motion. This system monitors every gesture of the human shoulder in its range of motion except rotations around the longitudinal axis of the arm. In this regard, the design considers the movement of the glenohumeral, acromioclavicular, sternoclavicular, and scapulothoracic joints. The solution presented in this work considers several sensor configurations and compares its performance with a set of inertial measurement units (IMUs). These devices have been put together in a shoulder suit with Optitrack visual markers in order to be used as pose ground truth. Optimal configurations of flexible resistive sensors, in terms of accuracy requirements and number of sensors, have been obtained by applying principal component analysis techniques. The data provided by each configuration are then mapped onto the shoulder pose by using neural network algorithms. According to the results shown in this article, a set of flexible resistive sensors can be an adequate alternative to IMUs for multiaxial shoulder pose tracking in open spaces. Furthermore, the system presented can be easily embedded in fabric or wearable devices without obstructing the user's motion.

中文翻译:

基于应用于 Exosuit 的柔性电阻传感器的高效多轴肩部运动跟踪。

本文描述了跟踪肩部运动的灵活电阻传感器网络的性能。该系统监控人肩在其运动范围内的每个手势,除了围绕手臂纵轴的旋转。在这方面,设计考虑了盂肱关节、肩锁关节、胸锁关节和肩胸关节的运动。这项工作中提出的解决方案考虑了几种传感器配置,并将其性能与一组惯性测量单元 (IMU) 进行了比较。这些设备被放在带有 Optitrack 视觉标记的肩部套装中,以便用作姿势地面实况。通过应用主成分分析技术,已经获得了柔性电阻传感器在精度要求和传感器数量方面的最佳配置。然后通过使用神经网络算法将每个配置提供的数据映射到肩部姿势。根据本文所示的结果,一组灵活的电阻传感器可以作为 IMU 的充分替代品,用于在开放空间进行多轴肩部姿势跟踪。此外,所展示的系统可以很容易地嵌入到织物或可穿戴设备中,而不会阻碍用户的运动。
更新日期:2020-06-02
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