深度学习 1D-CNN 基于冲刺加速中的地面接触检测使用惯性测量单位
Felix Friedl1,2, Thorben Menrad2, Jürgen Edelmann-Nusser2
1Sports and Technology, Institute of Sport Science, Otto von Guericke University Magdeburg, 39116 Magdeburg, Germany.
Sensors (Basel, Switzerland)
|January 10, 2026
概括
一个新的深度学习模型在冲刺加速过程中准确地检测地面接触事件. 这种先进的方法提高了使用惯性测量单位 (IMU) 的冲刺分析可靠性.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 机器学习 机器学习
背景情况:
- 精确的地面接触 (GC) 检测对于冲刺性能分析至关重要.
- 惯性测量单元 (IMU) 提供基于现场的评估,但在冲刺加速可靠性方面存在局限性.
- 现有的启发式和机器学习算法在这个阶段难以精确地检测GC.
研究的目的:
- 引入和评估一个深度学习一维卷积神经网络 (1D-CNN) 进行增强的GC事件和时间检测.
- 在冲刺加速过程中提高基于IMU的生物机械监控的可靠性.
- 将1D-CNN的性能与现有方法进行比较.
主要方法:
- 十二名运动员进行了60米冲刺,最初的15米被双边树安装IMU和高速视频所捕捉.
- 来自视频的GC事件被用作训练和验证1D-CNN模型的基础真相.
- 来自IMU的结果加速和角度速度作为深度学习模型的输入特征.
主要成果:
- 优化的1D-CNN模型表现出卓越的性能,平均豪斯多夫距离≤6 ms.
- 该模型实现了100%的精度和回忆,在验证和测试数据集上,兰德指数≥0.977.
- 观察到与视频引用的近乎完美的一致性 (偏差<1毫秒,一致性极限±15毫秒,r>0.90).
结论:
- 1D-CNN显著优于启发式和以前的机器学习方法,用于在冲刺加速中检测GC.
- 这种深度学习方法提供了强大的,高度准确的GC检测,适合于现实世界的生物机械监控.
- 这些发现强调了深度学习时间序列模型在推进冲刺分析和性能优化方面的潜力.
相关概念视频
Measuring Acceleration Due to Gravity
1.2K
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
1.2K
Relative Motion Analysis - Acceleration
798
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
798
Relative Motion Analysis using Rotating Axes - Acceleration
743
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
Time differentiation is...
743


