基于足底力的平衡评估人机交互系统研究

针对现有平衡能力评估系统中存在的人机互动性差、交互系统反馈较单一等问题, 文章提出一种平衡能力评估人机交互策略, 研制平衡能力评估装置, 设计开发出一套基于足底力的平衡评估人机交互系统。该系统以压力中心(center of pressure, CoP)变量和足底力分布信息为平衡评估特征参数, 实现静态、主动性以及反应性平衡能力的评估; 以足底压力信息为输入信号, 通过 CoP 跟踪、CoP 轨迹图的绘制以及平衡评估特征值进行平衡能力评估。平衡能力评估试验结果表明, 系统传感器能准确实时地采集数据, 绘制的 CoP 轨迹图能准确反映人体的重心偏移情况。该人机交互系统系统可以实现对人体平衡能力评估的量化。

In response to the problems of poor human-computer interaction and single feedback in existing balance ability evaluation systems, this paper proposes a human-computer interaction strategy for balance ability evaluation, develops a balance ability evaluation device, and designs a human-computer interaction system for balance evaluation based on plantar force. The system uses center of pressure (CoP) variables and plantar force distribution information as balance evaluation feature parameters, which can achieve the evaluation of static, active, and reactive balance abilities. Using plantar pressure information as input signal, balance ability is evaluated through CoP tracking, CoP trajectory mapping, and balance evaluation feature values. The experimental results show that in the process of evaluating balance ability, sensors can accurately collect data in real time, and CoP trajectory maps can accurately reflect the deviation of the human center of gravity. The system can achieve quantitative evaluation of human balance ability.