当前位置: X-MOL 学术Med. Eng. Phys. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Three dimensional validation of an instrumented handrail for stair gait
Medical Engineering & Physics ( IF 2.2 ) Pub Date : 2020-10-07 , DOI: 10.1016/j.medengphy.2020.10.005
Ludovic Miramand 1 , Vincent Richard 1 , Bradford J McFadyen 1 , Katia Turcot 1
Affiliation  

Some studies have used load cells (LC) to measure the force applied to horizontal handrails, but no work has validated an inclined set-up that can be used to bring new insights into handrail use during staircase gait. The aim of this study was to validate the accuracy of an inclined handrail set-up instrumented with LC.

A handrail set-up designed to be easily reconstructed and integrating two commercial LC is proposed. Twenty points were tested along the handrail, with four reference weights in the three orthogonal directions of the sensors (Medio-Lateral, Antero-Posterior, Vertical). For each direction, the percentage (%) of error and the cross-talk between the known and recorded forces were calculated. A linear regression of the % error was performed to evaluate measurement accuracy in relation to point of application along the handrail.

The current easily replicated set-up of an inclined handrail showed accurate measures with low cross-talk. The percentage of error and cross-talk were below 3.7% and 3.7%, respectively, consistent with previous studies evaluating inclined handrail with other methods. The error and cross-talk were greater in the Medio-Lateral and Antero-Posterior directions. The error in the Antero-Posterior direction was larger over the upper part of the handrail.



中文翻译:

楼梯步态仪表扶手的三维验证

一些研究使用称重传感器 (LC) 来测量施加在水平扶手上的力,但没有任何工作验证倾斜设置,该设置可用于为楼梯步态期间的扶手使用带来新的见解。本研究的目的是验证配备 LC 的倾斜扶手装置的准确性。

提出了一种设计为易于重建和集成两个商用 LC 的扶手设置。沿着扶手测试了 20 个点,在传感器的三个正交方向(中间-横向、前后、垂直)上使用四个参考砝码。对于每个方向,计算已知力和记录力之间的误差百分比和串扰。执行百分比误差的线性回归以评估与沿扶手的应用点相关的测量准确度。

当前易于复制的倾斜扶手设置显示了低串扰的准确测量。错误和串扰的百分比分别低于 3.7% 和 3.7%,这与之前使用其他方法评估倾斜扶手的研究一致。中间-横向和前后方向的误差和串扰更大。扶手上部的前后方向误差较大。

更新日期:2020-10-15
down
wechat
bug