|本期目录/Table of Contents|

基于加速度计和弯曲传感器的手指运动姿态监测(英文)(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年1期
页码:
61-66
栏目:
微机电系统
出版日期:
2017-01-15

文章信息/Info

Title:
Finger Motion Monitoring Based on Accelerometer and Flex Sensor
作者:
都悦来 史丽萍 李桂英 庞桂云 王立晶
黑龙江大学机电工程学院, 哈尔滨150080
Author(s):
Du Yuelai Shi Liping Li Guiying Pang Guiyun Wang Lijing
School of Mechanical and Electrical Engineering, Heilongjiang University, Harbin 150080, China
关键词:
加速度计 弯曲传感器 关节角度 动态监测
Keywords:
accelerometer flex sensor joint angle dynamic monitoring
分类号:
TP212.9
DOI:
10.13494/j.npe.20160008
文献标识码:
A
摘要:
针对动态测量关节角度的需要,本文设计了两种手指运动姿态监测方法.第1种方法是通过基于MEMS技术的三轴加速度计ADXL330对近侧指间关节的运动姿态进行监测.ADXL330是通过每一敏感轴所感知的重力加速度分量来实现这一功能.为验证该方法的可行性,设计了步进电机控制的能在竖直平面内转动的装置.对比传感器的输出和电机转动的角度,结果表明:动态条件下,其绝对误差为1°~3°,相对误差为2%~6%.第2种方法是通过弯曲传感器在弯曲时输出电阻的变化来监测手指的运动姿态.实验结果表明:在一定的允许误差范围内,三轴加速度计ADXL330和弯曲传感器都能用于监测手指运动姿态.
Abstract:
In order to dynamically measure the joint angle, two detection methods for finger motion were designed. The first method uses threeaxis accelerometer ADXL330 based on MEMS technology to monitor the proximal interphalangeal joint (PIP joint) motion. The accelerometer ADXL330 realizes this function through the gravitational acceleration component of every sensitive axis. To verify the feasibility of the proposed scheme, a rotating device was designed which could be controlled by the stepper motor and could rotate in the vertical plane. Considering the output voltage of the accelerometer and the rotating angle of the stepper motor, the results show that the absolute error and relative error mainly ranges between 1°—3° and 2%—6%, respectively, under dynamic conditions. The second method uses a flex sensor to monitor finger motion attitude. The sensor works under the principle that it produces output resistance change when bent. The experimental results show that both the threeaxis accelerometer ADXL330 and the flex sensor can be applied to monitor the motion attitude of human fingers within a range of errors.

参考文献/References

备注/Memo

备注/Memo:
收稿日期: 2016-01-21. 基金项目: 黑龙江省教育厅科学技术研究资助项目(12541624). 作者简介: 都悦来(1992—),男,硕士研究生. 通讯作者: 史丽萍,教授,shlp1971@163.com.
更新日期/Last Update: 2017-02-28