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Low cost portable 3-D printed optical fiber sensor for real-time monitoring of lower back bending

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dc.contributor.author Kam, Wern
dc.contributor.author O'Sullivan, Kieran
dc.contributor.author O'Keeffe, Mary
dc.contributor.author O'Keeffe, Sinéad
dc.contributor.author Mohammed, Waleed S.
dc.contributor.author Lewis, Elfed
dc.date.accessioned 2017-11-03T11:36:09Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10344/6228
dc.description peer-reviewed en_US
dc.description.abstract A mechanically robust and compact novel optical fiber sensor system is described to monitor the bending of the lower back bone in both sagittal and frontal planes. Both bending modes are monitored through the change of the coupled optical intensity ratio between three output fibers aligned to one input fiber. This provides real-time feedback to the clinical therapist when different postures are sustained. The output ratio is calibrated against bending angle using an optical setup utilizing a precise rotational stage. The measured data is also correlated to the curvature of the lower back through the implementation of an ad-hoc imaging scheme. Sequences of images are also captured while the optical fiber sensor is attached on the skin surface to the lower back. The imaging system tracks three spots placed on the sensor and skin to trace the angle changes. The optical fiber sensor system has an operational range between −12° to +12°. It is demonstrated that the sensor is suitable for clinical use with the additional benefits of being non-invasive, robust, straightforward to use and low cost. It also allows record of spinal curvature in the home and other real-world settings and potentially reduces the requirement for the use of X-rays and MRI in the clinic. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Sensors and Actuators A: Physical;265, pp. 193-201
dc.relation.uri https://doi.org/10.1016/j.sna.2017.08.044
dc.rights This is the author’s version of a work that was accepted for publication in Sensors and Actuators A: PhysicalChanges resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Sensors and Actuators A: Physical, 2017, 265, pp. 193-201, https://doi.org/10.1016/j.sna.2017.08.044 en_US
dc.subject optical fiber sensor en_US
dc.subject 3-D printed sensor en_US
dc.subject lower back bending sensor en_US
dc.subject lateral and sagittal plane motions en_US
dc.title Low cost portable 3-D printed optical fiber sensor for real-time monitoring of lower back bending en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.sna.2017.08.044
dc.contributor.sponsor ERC en_US
dc.date.embargoEndDate 2019-09-04
dc.embargo.terms 2019-09-04 en_US
dc.rights.accessrights info:eu-repo/semantics/embargoedAccess en_US
dc.internal.rssid 2728158


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