纺织学报 ›› 2019, Vol. 40 ›› Issue (11): 175-181.doi: 10.13475/j.fzxb.20181104507

• 管理与信息化 • 上一篇    下一篇

压力鞋垫的足-地面反力预测模型与分析

王宏程1, 郎润男1, 王芳芳2(), 徐丰羽1, 申景金1   

  1. 1.南京邮电大学 自动化学院 人工智能学院, 江苏 南京 210023
    2.南通大学 纺织服装学院, 江苏 南通 226019
  • 收稿日期:2018-11-15 修回日期:2019-08-04 出版日期:2019-11-15 发布日期:2019-11-26
  • 通讯作者: 王芳芳
  • 作者简介:王宏程(1994—),男,硕士生。主要研究方向为可穿戴智能设备。
  • 基金资助:
    国家自然科学基金项目(51505235)

Prediction model and analysis of foot-ground reaction force based on pressure insole

WANG Hongcheng1, LANG Runnan1, WANG Fangfang2(), XU Fengyu1, SHEN Jingjin1   

  1. 1. College of Automation & College of Artificial Intelligence, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
    2. School of Textile and Clothing, Nantong University Nantong, Jiangsu 226019, China
  • Received:2018-11-15 Revised:2019-08-04 Online:2019-11-15 Published:2019-11-26
  • Contact: WANG Fangfang

摘要:

为方便医生对病人日常生活状态下足-地面反力的远程监诊,设计了鞋垫式足底压力测量系统。在足底压力的动态测量过程中,压力传感器的模拟信号经过放大滤波调理和数模转换后,通过Zigbee无线模块发送至SQL数据库,使用LabVIEW后处理程序实现足底压力的远程读取。基于足底压力数据,利用多元线性回归算法建立了足-地面反力的多元线性回归模型,发现FSR402传感器在测量10 N以下的压力时精度较高,当压力达到10 N及以上时精度显著下降。鞋垫式压力测量系统通过2次对比实验所测的测量值和预测值之间的误差为0.248 8%和0.731 8%,位于工程应用可接受的误差范围之内,而产生的误差以及预测力负值的原因是传感器精度和足部与鞋垫之间的黏弹性。

关键词: 足-地面反力, 鞋垫, 足底压力, 可穿载智能设备, 黏弹性

Abstract:

In order to facilitate the doctor to remotely monitor the foot-ground reaction of the patient in daily life, an insole type foot pressure measurement system was designed. In the dynamic measurement of the plantar pressure, the analog signal of the pressure sensor is amplified, filtered and digital-analog converted, sent to the SQL database through the Zigbee wireless module, and the remote reading of the plantar pressure is realized by using the LabVIEW post-processing program. Based on the plantar pressure data, a multivariate linear regression model was used to establish a multivariate linear regression model of the foot-to-ground reaction. It was found that the FSR402 sensor has a high precision when measuring the pressure below 10 N, and the accuracy is significantly reduced when the pressure reaches 10 N and above. The insole pressure measurement system uses 0.248 8% and 0.731 8% of the error between the measured and predicted values measured by two comparison experiments, which is within the acceptable error range for engineering applications, the resulting error and the cause of negative predictive power is the accuracy of the sensor and the viscoelasticity between the foot and the insole.

Key words: foot-ground reaction force, insole, plantar pressure, smart wearable device, viscoelasticity

中图分类号: 

  • TS943.3

图1

电压与压力曲线图"

图2

压力传感器整体布局"

图3

信号放大电路图"

图4

无线传输硬件图"

图5

协调器创建网络流程图"

图6

图形化显示界面图"

图7

实验图"

图8

验证实验1和2"

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