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相关概念视频

Motor Units00:46

Motor Units

A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
Average Acceleration01:30

Average Acceleration

The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
Instantaneous Acceleration01:16

Instantaneous Acceleration

Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Measuring Acceleration Due to Gravity01:12

Measuring Acceleration Due to Gravity

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...
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

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...

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相关实验视频

Updated: May 9, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

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通过骑手佩戴的加速度计检测马的步态.

Jorn Schampheleer1, Anniek Eerdekens1, Wout Joseph1

  • 1WAVES, Department of Information Technology, Ghent University-IMEC, 9052 Ghent, Belgium.

Animals : an open access journal from MDPI
|April 26, 2025
PubMed
概括
此摘要是机器生成的。

这项研究使用骑手佩戴的加速度计来分类马的步态,避免直接安装传感器. 一个ConvLSTM2D模型实现了89.72%的准确性来分类四个步态,优化传感器放置和数据参数.

关键词:
加速度计传感器传感器动物活动识别动物活动识别卷积式 LSTM 网络马类的马类动物.机器学习是机器学习.

更多相关视频

Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults
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Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults

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Home-Based Monitor for Gait and Activity Analysis
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相关实验视频

Last Updated: May 9, 2026

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

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Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults
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Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults

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Home-Based Monitor for Gait and Activity Analysis
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科学领域:

  • 马类科学 马类科学
  • 生物机械工程 生物机械工程
  • 机器学习在体育科学中的应用

背景情况:

  • 直接安装传感器用于马的步态分析,会带来不适和纠等风险.
  • 以骑手为中心的加速度计为马的运动分类提供了一个非侵入性的替代方案.

研究的目的:

  • 为了评估传感器位置,采样频率和窗口大小对马的步态分类准确性的同时影响,使用骑手佩戴的加速度计.
  • 为了确定最优的参数和模型,准确的,非侵入性的马步态分析.

主要方法:

  • 收集了来自四个骑手位置 (膝盖,脊椎,胸部,手臂) 的加速度计数据,跨越五名骑手和七匹马进行三种步态 (步行,,).
  • 比较了8个机器学习模型,包括一个ConvLSTM2D网络,分析不同采样频率和四秒钟窗口大小的数据.
  • 使用Leave One Subject Out交叉验证 (LOSOCV) 验证了模型性能.

主要成果:

  • ConvLSTM2D模型实现了最高的平均准确率89.72%,用于分类四种马的步态 (停止,步行,,).
  • 在四秒间隔宽度和25 Hz采样频率下观察到最佳性能.
  • 获得了86.18%的F1得分,证明了强大的分类能力.

结论:

  • 骑手佩戴的加速度计提供了一种有效的,非侵入性的方法,用于马的自动步态分类.
  • 具有优化的参数的ConvLSTM2D模型为实时马匹运动分析提供了高精度.
  • 这种方法减轻了与直接传感器连接相关的风险,提高了马的福利和训练洞察力.