Design and Evaluation of a Fiber-Optic Grip Force Sensor with Compliant 3D-Printable Structure for (f)MRI Applications
Joint Authors
Bützer, Tobias L.
Rinderknecht, Mike D.
Johannes, Gunda H.
Popp, Werner L.
Lehner, Rea
Lambercy, Olivier
Gassert, Roger
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-07-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Grip force sensors compatible with magnetic resonance imaging (MRI) are used in human motor control and decision-making research, providing objective and sensitive behavioral outcome measures.
Commercial sensors are expensive, cover limited force ranges, rely on pneumatic force transmission that cannot detect fast force changes, or are electrically active, which increases the risk of electromagnetic interference.
We present the design and evaluation of a low-cost, 3D-printed, inherently MRI-compatible grip force sensor based on a commercial intensity-based fiber-optic sensor.
A compliant monobloc structure with flexible hinges transduces grip force to a linear displacement captured by the fiber-optic sensor.
The structure can easily be adapted for different force ranges by changing the hinge thickness.
A prototype designed for forces up to 800 N was manufactured and showed a highly linear behavior (nonlinearity of 2.37%) and an accuracy of 1.57% in a range between zero and 500 N.
It can be printed and assembled within one day and for less than $300.
Accurate performance was confirmed, both inside and outside a 3 T MRI scanner within a pilot study.
Given its simple design allowing for customization of sensing properties and ergonomics for different applications and requirements, the proposed grip force handle offers researchers a valuable scientific tool.
American Psychological Association (APA)
Bützer, Tobias L.& Rinderknecht, Mike D.& Johannes, Gunda H.& Popp, Werner L.& Lehner, Rea& Lambercy, Olivier…[et al.]. 2016. Design and Evaluation of a Fiber-Optic Grip Force Sensor with Compliant 3D-Printable Structure for (f)MRI Applications. Journal of Sensors،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1110546
Modern Language Association (MLA)
Bützer, Tobias L.…[et al.]. Design and Evaluation of a Fiber-Optic Grip Force Sensor with Compliant 3D-Printable Structure for (f)MRI Applications. Journal of Sensors No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1110546
American Medical Association (AMA)
Bützer, Tobias L.& Rinderknecht, Mike D.& Johannes, Gunda H.& Popp, Werner L.& Lehner, Rea& Lambercy, Olivier…[et al.]. Design and Evaluation of a Fiber-Optic Grip Force Sensor with Compliant 3D-Printable Structure for (f)MRI Applications. Journal of Sensors. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1110546
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1110546