《中国康复理论与实践》 ›› 2021, Vol. 27 ›› Issue (7): 844-851.doi: 10.3969/j.issn.1006-9771.2021.07.018

• 辅助技术 • 上一篇    下一篇

基于坐立转换运动轨迹的如厕辅助装置设计

李远利1,涂细凯1,2(),胡世超2,李肖2   

  1. 1.湖北工业大学工业设计学院,湖北武汉市 430068
    2.湖北工业大学机械工程学院,湖北武汉市 430068
  • 收稿日期:2021-04-17 修回日期:2021-05-31 出版日期:2021-07-25 发布日期:2021-07-28
  • 通讯作者: 涂细凯 E-mail:tuxikai@gmail.com
  • 作者简介:李远利(1995-),女,汉族,广西博白县人,硕士研究生,主要研究方向:老年人智能产品设计与用户体验。|涂细凯(1983-),男,汉族,湖北鄂州市人,博士,讲师,硕士研究生导师,主要研究方向:康复工程外骨骼机器人控制与设计。
  • 基金资助:
    1. 国家自然科学基金项目(52005169);2. 武汉市科技计划项目(2020020602012087)

A Design of Assistive Device for Toilet Based on Sitting-to-stand Motion Trajectory

LI Yuan-li1,TU Xi-kai1,2(),HU Shi-chao2,LI Xiao2   

  1. 1. College of Industrial Design, Hubei University of Technology, Wuhan, Hubei 430068, China
    2. College of Mechanical Engineering, Hubei University of Technology, Wuhan, Hubei 430068, China
  • Received:2021-04-17 Revised:2021-05-31 Published:2021-07-25 Online:2021-07-28
  • Contact: TU Xi-kai E-mail:tuxikai@gmail.com
  • Supported by:
    National Natural Science Foundation of China(52005169);Wuhan Science and Technology Planning(2020020602012087)

摘要:

目的 基于人体坐立转换运动轨迹设计一种符合人机工程学的如厕辅助装置,以提高老年人如厕的安全性和舒适性。

方法 2020年10月至11月,使用惯性测量单元对12例健康受试者进行坐立转换试验,获取不同速度下运动轨迹,并与现有研究的运动轨迹在0°、10°、20°、30°和40°倾角坐姿下进行马桶座圈有限元压力比较,以及站立后平衡分析。20例20~60岁的健康人采用本装置进行如厕体验。

结果 在4个倾角坐姿下,本研究运动轨迹对马桶座圈的压力小于现有研究的运动轨迹;坐立转换过程中,质心轨迹的垂直投影位于压力中心范围内,满足站立平衡条件。如厕体验多数指标为满意以上。

结论 提出一种新的坐立运动轨迹,基于该运动轨迹设计的如厕辅助装置平稳舒适。

关键词: 如厕辅助设备, 坐立转换, 运动轨迹, 人机工程学, 有限元分析

Abstract:

Objective To design a toilet assistant device according with an ergonomics based on the natural sit-to-stand transition motion trajectory, to improve the safety and comfort for the older adults.

Methods The sit-to-stand transition motion trajectory was obtained at different speeds using Inertial Measurement Unit from twelve healthy subjects. The finite element contrastive pressures on toilet seat at 0°, 10°, 20°, 30°, 40° sitting inclination angles were compared from this trajectory to the other research trajectory, as well as the balance analysis after standing. A total of 20 healthy subjects experienced the toilet assistant device and reported their satisfaction.

Results At four angles of inclination, the average pressure of this trajectory was less than that of the other research; while the vertical projection of center of mass was within the range of center of pressure, satisfying the balance condition. Most of the subjects were satisfactory to the toilet assistant device.

Conclusion A new sit-to-stand transition motion trajectory has been obtained. A toilet assistant device based on the motion trajectory has been designed, which is comfortable and steady.

Key words: toilet assistant device, sitting-to-stand, motion trajectory, ergonomics, finite element analysis

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