Next Article in Journal
A Novel Microfluidic Flow Rate Detection Method Based on Surface Plasmon Resonance Temperature Imaging
Previous Article in Journal
A Real-Time Orbit Determination Method for Smooth Transition from Optical Tracking to Laser Ranging of Debris
Article Menu

Export Article

Open AccessArticle
Sensors 2016, 16(7), 961; doi:10.3390/s16070961

A Novel Low-Cost, Large Curvature Bend Sensor Based on a Bowden-Cable

School of Mechanical and Aerospace Engineering/IAMD, Seoul National University, Seoul 08826, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 12 May 2016 / Revised: 14 June 2016 / Accepted: 20 June 2016 / Published: 24 June 2016
(This article belongs to the Section Physical Sensors)

Abstract

Bend sensors have been developed based on conductive ink, optical fiber, and electronic textiles. Each type has advantages and disadvantages in terms of performance, ease of use, and cost. This study proposes a new and low-cost bend sensor that can measure a wide range of accumulated bend angles with large curvatures. This bend sensor utilizes a Bowden-cable, which consists of a coil sheath and an inner wire. Displacement changes of the Bowden-cable’s inner wire, when the shape of the sheath changes, have been considered to be a position error in previous studies. However, this study takes advantage of this position error to detect the bend angle of the sheath. The bend angle of the sensor can be calculated from the displacement measurement of the sensing wire using a Hall-effect sensor or a potentiometer. Simulations and experiments have shown that the accumulated bend angle of the sensor is linearly related to the sensor signal, with an R-square value up to 0.9969 and a root mean square error of 2% of the full sensing range. The proposed sensor is not affected by a bend curvature of up to 80.0 m−1, unlike previous bend sensors. The proposed sensor is expected to be useful for various applications, including motion capture devices, wearable robots, surgical devices, or generally any device that requires an affordable and low-cost bend sensor. View Full-Text
Keywords: bend sensor; flexible sensor; shape sensor; bend measurement; low-cost sensor; Bowden-cable; cable conduit bend sensor; flexible sensor; shape sensor; bend measurement; low-cost sensor; Bowden-cable; cable conduit
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Jeong, U.; Cho, K.-J. A Novel Low-Cost, Large Curvature Bend Sensor Based on a Bowden-Cable. Sensors 2016, 16, 961.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top