The characterization of a pressure sensor constructed from a knitted spacer structure

Hughes-Riley, T. ORCID: 0000-0001-8020-430X, Oliveira, C., Morris, R.H. ORCID: 0000-0001-5511-3457 and Dias, T. ORCID: 0000-0002-3533-0398, 2019. The characterization of a pressure sensor constructed from a knitted spacer structure. Digital Medicine. ISSN 2226-8561

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Abstract

Background and Objectives: This study investigates a novel type of textile pressure sensor fabricated in a single production step. The work characterizes two designs of electronic textile pressure sensor creating new knowledge into the operation of these types of textile sensors. Interest in electronic flexible film and electronic textile pressure sensing has grown in recent years given their potential in medical applications, principally in developing monitoring solutions for wheelchair users and hospital patients to help prevent the formation of pressure ulcers.

Materials and Methods: Two designs of textile pressure sensor were produced using computerized flat-bed knitting. One design was produced in a single step, where the conductive tracks were incorporated into the top and bottom surfaces of a knitted spacer structure (knitted spacer pressure sensor). The other sensor was comprised of separate knitted layers. The response of the sensors was tested by changing the applied pressure in two ways: By altering the applied force or changing the area of the applied force. Sensor hysteresis and how the sensor thickness affected its response were also examined.

Results: The two sensor designs behaved differently under the tested conditions. The knitted spacer pressure sensor was pressure sensitive up to 25 kPa and showed no hysteretic effects over the pressure range of interest.

Conclusions: This study presents a fully textile pressure sensor that was produced with a single production step and demonstrates its functionality over the pressure range of interest for monitoring wheelchair users.

Item Type: Journal article
Publication Title: Digital Medicine
Creators: Hughes-Riley, T., Oliveira, C., Morris, R.H. and Dias, T.
Publisher: Wolters Kluwer - Medknow
Date: 10 January 2019
ISSN: 2226-8561
Identifiers:
NumberType
10.4103/digm.digm_17_18DOI
249837Publisher Item Identifier
Rights: This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
Divisions: Schools > School of Art and Design
Depositing User: Jonathan Gallacher
Date Added: 10 Jan 2019 12:57
Last Modified: 10 Jan 2019 12:57
URI: http://irep.ntu.ac.uk/id/eprint/35525

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