基于气囊结构鞋垫的足底压力分布测量系统  

Plantar pressure based on airbag insole distributed measurement system

作　　者：陈伟[1] 王勇[1] 沈进东 陆益民[1] 穆景颂 CHEN Wei;WANG Yong;SHEN Jindong;LU Yimin;MU Jingsong(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学机械工程学院,合肥230009

出　　处：《重庆理工大学学报（自然科学）》2023年第10期202-210,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金联合基金项目(JZ2018GJLH0078)。

摘　　要：为检测人体在静态和动态下的足底压力分布状况,针对现有设备穿戴舒适性差、成本高、寿命短、可靠性差、设备体积大等问题,设计了一种基于气囊结构的人体足底压力分布测量系统。首先,基于人体行走的步态特征、足内外翻和足底压力的特征对足底压力分布测量系统进行区域划分;其次,对气囊单元体的厚度尺寸进行仿真和迭代计算,设计半球壳结构的气囊单元体;然后,对足底压力分布系统区域的数据采集部分进行硬件设计;最后,对所划分的各测量区域进行标定和误差分析,并测量人体在静态、不同步态下的足底压力分布。实验结果表明:足底压力分布测量系统迟滞性误差为2.8%,重复性误差为1.77%,平均测量误差为1.91%,能以较高精度测量静态下足底压力的分布情况,划分人体动态情况下的步态。研究结果可为步态研究、康复训练、平衡能力评估等提供参考。In order to detect the plantar pressure distribution of human body under static and dynamic conditions,a human plantar pressure distribution measurement system based on airbag structure is built to address the problems of poor wearing comfort,high cost,short life span,poor reliability and large size of existing devices.Firstly,the human walking gait characteristics,foot inversion and plantar pressure characteristics are employed to divide the plantar pressure distribution measurement system into regions;secondly,the thickness of the airbag unit body is simulated and iteratively calculated to design a hemispherical shell structure of the airbag unit body;then the data acquisition part of the plantar pressure distribution system region is designed in hardware;thirdly,the calibration and error analysis of the divided measurement regions are performed;finally,the calibration and error analysis of each measurement area are carried out,and the plantar pressure distribution of human body under static and different gait is measured.The experimental results show that the plantar pressure distribution measurement system has a hysteresis error of 2.8%,a repeatability error of 1.77%,and an average measurement error of 1.91%,which can measure the distribution of plantar pressure under static conditions with high accuracy and can classify the human gait under dynamic conditions.The study may provide a certain scientific basis for gait research,rehabilitation training,and balance assessment.

关 键 词：足底压力 气压传感器 优化分析 分区测量 气囊结构 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置] R318.6[自动化与计算机技术—控制科学与工程]