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阿尔卑斯山滑雪运动运动分析:传感器放置和定向不变传感

Behrooz Azadi^1,2, Michael Haslgrübler¹, Alois Ferscha²

¹Pro2Future GmbH, Altenberger Strasse 69, 4040 Linz, Austria.

Sensors (Basel, Switzerland)

|April 26, 2025

概括

本研究介绍了惯性测量单元 (IMU) 的预处理算法,以准确跟踪高山滑雪者的转动动作. 该方法对传感器放置和方向变化进行校正,使滑雪行为的可靠分析成为可能.

科学领域:

运动科学运动科学运动科学
生物力学生物力学
传感器技术传感器技术

背景情况:

准确估计滑雪者的身体姿势和倾向对于分析转行为至关重要.
惯性测量单元 (IMU) 在具有挑战性的条件下提供动力学数据,但对位置和方向变化敏感.
传感器数据的变化可能会阻碍对滑雪表现的可靠评估.

研究的目的:

研究传感器放置和定位对高山滑雪中的IMU信号的影响.
开发和验证用于标准化IMU数据的预处理算法.
为了能够对滑雪者的转动运动进行可靠的检测和分析,无论传感器的设置如何.

主要方法:

使用基于四子的补充波器 (CF) 的传感器融合方法.
原始IMU信号被旋转到参考方向,大致接近质量中心 (CoM) 附近的位置.
全球波波谱被用来提取和分析转动的运动.

主要成果:

预处理算法有效地重建了侧向运动,并代表了滑雪转.
在包括智能手机在内的14个传感器中,独立于传感器放置和定位检测到滑雪转.
与六名滑雪者进行的实地实验显示,与参考传感器相比,转检测一致,根平均平方误差 (RMSE) 为0.77和平均绝对误差 (MAE) 为0.50.

结论:

拟议的算法显著提高了基于IMU的高山滑雪运动动力学分析的可靠性.
这种方法克服了与传感器放置和方向变化相关的挑战.
这些发现支持使用IMU来客观和一致地评估滑雪者的转行为和能力.

关键词:

阿尔卑斯山滑雪运动监测监测惯性测量单位是一种惯性测量单位.运动分析分析运动分析.融合传感器融合传感器融合传感器传感器的位置和方向.

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