Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency

Determining the position and orientation of a medical instrument is essential for accurate procedures in endoscopy, surgery, and vascular interventions. Recently, a novel sensor based on torsional pendulum-like magneto-mechanical motion has been proposed. This sensor is passive, wireless and inducti...

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Main Authors: Knopp Tobias, Mohn Fabian, Foerger Fynn, Thieben Florian, Hackelberg Niklas, Faltinath Jonas, Tsanda Artyom, Boberg Marija, Möddel Martin
Format: Article
Language:English
Published: De Gruyter 2024-12-01
Series:Current Directions in Biomedical Engineering
Subjects:
Online Access:https://doi.org/10.1515/cdbme-2024-2092
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author Knopp Tobias
Mohn Fabian
Foerger Fynn
Thieben Florian
Hackelberg Niklas
Faltinath Jonas
Tsanda Artyom
Boberg Marija
Möddel Martin
author_facet Knopp Tobias
Mohn Fabian
Foerger Fynn
Thieben Florian
Hackelberg Niklas
Faltinath Jonas
Tsanda Artyom
Boberg Marija
Möddel Martin
author_sort Knopp Tobias
collection DOAJ
description Determining the position and orientation of a medical instrument is essential for accurate procedures in endoscopy, surgery, and vascular interventions. Recently, a novel sensor based on torsional pendulum-like magneto-mechanical motion has been proposed. This sensor is passive, wireless and inductively coupled to a transmit-receive coil array. This setup allows the determination of all 6 degrees of freedom using the characteristic resonance of the sensor. Additional physical quantities such as temperature and pressure can be measured based on the frequency of the sensor, which mainly depends on the distance between the two involved permanent magnets. In this study, we analyze a sensor composed of two magnetic cylinders with variable magnet-to-magnet distance and a basic physical model based on a dipole assumption. Experimental analysis of the resonance frequency and comparison with the model values show both qualitative and quantitative agreement with an average relative error of only 0.8 %. This validates the implemented model and shows the suitability of our magneticmechanical resonator made from cylindrical permanent magnets for sensing applications.
format Article
id doaj-art-26a4dd09f4ac4856b70e40d8493a1b6d
institution Kabale University
issn 2364-5504
language English
publishDate 2024-12-01
publisher De Gruyter
record_format Article
series Current Directions in Biomedical Engineering
spelling doaj-art-26a4dd09f4ac4856b70e40d8493a1b6d2025-01-02T05:56:33ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042024-12-0110437738010.1515/cdbme-2024-2092Empirical Study of Magnet Distance on Magneto-Mechanical Resonance FrequencyKnopp Tobias0Mohn Fabian1Foerger Fynn2Thieben Florian3Hackelberg Niklas4Faltinath Jonas5Tsanda Artyom6Boberg Marija7Möddel Martin8Section for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanySection for Biomedical Imaging, University Medical Center Hamburg-Eppendorf,Hamburg, GermanyDetermining the position and orientation of a medical instrument is essential for accurate procedures in endoscopy, surgery, and vascular interventions. Recently, a novel sensor based on torsional pendulum-like magneto-mechanical motion has been proposed. This sensor is passive, wireless and inductively coupled to a transmit-receive coil array. This setup allows the determination of all 6 degrees of freedom using the characteristic resonance of the sensor. Additional physical quantities such as temperature and pressure can be measured based on the frequency of the sensor, which mainly depends on the distance between the two involved permanent magnets. In this study, we analyze a sensor composed of two magnetic cylinders with variable magnet-to-magnet distance and a basic physical model based on a dipole assumption. Experimental analysis of the resonance frequency and comparison with the model values show both qualitative and quantitative agreement with an average relative error of only 0.8 %. This validates the implemented model and shows the suitability of our magneticmechanical resonator made from cylindrical permanent magnets for sensing applications.https://doi.org/10.1515/cdbme-2024-2092magneto-mechanical resonatorsensingresonance frequencymagnet-to-magnet distance
spellingShingle Knopp Tobias
Mohn Fabian
Foerger Fynn
Thieben Florian
Hackelberg Niklas
Faltinath Jonas
Tsanda Artyom
Boberg Marija
Möddel Martin
Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
Current Directions in Biomedical Engineering
magneto-mechanical resonator
sensing
resonance frequency
magnet-to-magnet distance
title Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
title_full Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
title_fullStr Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
title_full_unstemmed Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
title_short Empirical Study of Magnet Distance on Magneto-Mechanical Resonance Frequency
title_sort empirical study of magnet distance on magneto mechanical resonance frequency
topic magneto-mechanical resonator
sensing
resonance frequency
magnet-to-magnet distance
url https://doi.org/10.1515/cdbme-2024-2092
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