Design of a FSR-based apparatus for finger force measurement

HOU Wen-sheng; MA Kui; LIAO Yan-jian; ZHENG Xiao-lin

doi:10.13873/j.1000-97872010.10.037

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Design of a FSR-based apparatus for finger force measurement

更新时间：2025-09-11

- Design of a FSR-based apparatus for finger force measurement
- Vol. 29, Issue 10, Pages: 106-109(2010)
- 作者机构：
  
  重庆大学生物医学工程系
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872010.10.037
  CLC： TP274
- Published：2010
- 稿件说明：
移动端阅览
[1]侯文生,马奎,廖彦剑,郑小林.基于FSR的指力检测装置设计[J].传感器与微系统,2010,29(10):106-109.

HOU Wen-sheng, MA Kui, LIAO Yan-jian, et al. Design of a FSR-based apparatus for finger force measurement[J]. 2010, 29(10): 106-109.
[1]侯文生,马奎,廖彦剑,郑小林.基于FSR的指力检测装置设计[J].传感器与微系统,2010,29(10):106-109. DOI： 10.13873/j.1000-97872010.10.037.

HOU Wen-sheng, MA Kui, LIAO Yan-jian, et al. Design of a FSR-based apparatus for finger force measurement[J]. 2010, 29(10): 106-109. DOI： 10.13873/j.1000-97872010.10.037.

摘要

针对脑磁图、磁共振等测试环境的特殊要求

设计了基于力敏电阻器（FSR）的指力检测装置。在该装置中

利用聚碳酸酯材料设计了将指力转换为FSR电阻改变的机械装置

通过恒流源电路将FSR电阻变化转换为电压信号

以USB6008和LabVIEW实现了数据的实时采集和显示

并对整个装置进行了静态标定和动态特性测试。测试结果表明:输出电压和施加压力近似呈指数关系;在0

5 N的静态测试范围内

输出力量与实际压力的绝对误差小于0.5 N

相对误差小于10%;在0

5 N的动态测试范围内

绝对误差主要集中在0

相对误差主要集中分布在2%

%。装置具有较好的静态和动态特性

可用于脑磁图、磁共振等环境下指力实验。

Abstract

To meet the finger force measurement in the experiment of magnetoencephalography（MEG）or magnetic resonance imaging（MRI）

a force sensor resistor（FSR）-based finger force detection apparatus was designed.A custom-made polycarbonate substrate was used to transfer finger force to the deformation of FSR cell mechanically

and a constant-current source circuit was adopted to transduce the resistance changes of FSR into voltage signal.USB6008 interface card and LabVIEW were combined to acquire and display the digitized finger force signal in real-time.The apparatus was tested and characterized in static and dynamic conditions.The experiment results revealed that the relationship between pressure

and output voltage approximated an exponential curve.Within the range of 0

5 N

the absolute error was less than 0.5 N and the relative error was less than 10 %

respectively;the absolute error and relative error in the dynamic testing mainly ranged of 0

N and 2 %

% respectively.The testing results indicated that our proposed finger force detection apparatus had good performance in both static and dynamic conditions

and could meet the requirements of finger force detection in MEG or MRI experiment.

关键词

Keywords

references

一种新型人足底压力分布测量系统及其应用 [J]. 金观昌,张军,张建中,孙超. 生物医学工程学杂志 . 2005(01)

Effects of motor imagery on finger force responses to transcranial magnetic stimulation [J] . Sheng Li,Mark L. Latash,Vladimir M. Zatsiorsky. Cognitive Brain Research . 2004 (2)

Finger interactions studied with transcranial magnetic stimulation during multi-finger force production tasks [J] . Frédéric Danion,Mark L Latash,Sheng Li. Clinical Neurophysiology . 2003 (8)

Evaluation of handgrip force from EMG measurements [J] . J. Duque,D. Masset,J. Malchaire. Applied Ergonomics . 1995 (1)

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