一种基于可穿戴加速传感器的步态稳定性评估方法
Xuecheng Weng1, Chang Mei1, Farong Gao1
1School of Artificial Intelligence, Hangzhou Dianzi University, Hangzhou 310018, China.
Mathematical biosciences and engineering : MBE
|December 5, 2023
概括
这项研究引入了一种使用加速传感器和动态时间变形 (DTW) 的新方法,以评估关节支架如何影响步行稳定性. 膝盖支架比脚支架更明显地扰乱了步态.
科学领域:
- 生物力学 生物力学
- 康复工程 康复工程 康复工程
- 可穿戴式传感器技术
背景情况:
- 步行稳定对于移动性和防止跌倒至关重要.
- 评估辅助设备 (如关节支架) 对步行的影响对于康复至关重要.
- 现有的步态分析方法可能很复杂,可能无法准确地捕捉动态关节运动效应.
研究的目的:
- 开发和验证一个定量工具来评估联合运动对步态稳定性的影响.
- 用加速度传感器数据评估脚和膝关节支架对步行稳定的影响.
- 为了比较脚与膝盖支架对步态稳定的影响.
主要方法:
- 使用传感器收集实时下肢运动加速数据.
- 开发了一种改进的动态时间扭曲 (DTW) 算法来计算步态稳定性指数.
- 在脚和膝关节支架的影响下分析了步行稳定性.
主要成果:
- 脚和膝盖的关节支架减少了各自关节的运动范围,影响了步行稳定性.
- 与脚关节支架相比,膝关节支架对步行稳定性造成了更大的干扰.
- 支架侧的关节运动明显偏离了正常行走,而非支架侧的关节运动显示了更多的相似性.
结论:
- 基于DTW的定量评估算法提供了一种直观的方法来评估步行稳定性.
- 这种方法在评估下肢功能障碍,临床培训和康复方面具有潜在的应用.
- 了解支架对步态的影响对于优化患者康复中的辅助设备使用至关重要.
相关概念视频
01:10Relative 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...
01:19Root-Locus Method
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block diagram,...
This system can be represented by a block diagram,...