Modelling of three-axis Hall effect sensors based on integrated magnetic concentrator

Fan, H., Li, S., Nabaei, V. , Feng, Q. and Heidari, H. (2020) Modelling of three-axis Hall effect sensors based on integrated magnetic concentrator. IEEE Sensors Journal, 20(17), pp. 9919-9927. (doi: 10.1109/JSEN.2020.2989325)

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Abstract

In this paper, we develop computational model to analyze the magnetic concentrating effect of integrated magnetic concentrator (IMC) on surrounding external magnetic field. We present an IMC-based three-axis Hall sensor model that enables to measure both inclination angles and absolute strength of a random external magnetic field. An IMC changes surrounding parallel magnetic components into perpendicular components, and therefore allows the horizontal Hall plates to measure both the strength and inclination angles of parallel external magnetic fields. We develop a finite element method (FEM) based model in COMSOL Multiphysics for the three-axis Hall sensor. Key factors influencing IMC’s magnetic concentrating effect, including material property and sensor structure, are investigated and discussed using the developed model. Comparing to traditional IMC-based three-axis angular sensors, a reference permanent magnet is no longer needed in the sensor. A measurement accuracy of 0.8 and 1.2 degrees are achieved respectively for the angles of α and θ of external magnetic field.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Nabaei, Dr Vahid and Heidari, Dr Hadi
Authors: Fan, H., Li, S., Nabaei, V., Feng, Q., and Heidari, H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Sensors Journal
Publisher:IEEE
ISSN:1530-437X
ISSN (Online):1558-1748
Published Online:21 April 2020
Copyright Holders:Copyright © 2020 IEEE
First Published:First published in IEEE Sensors Journal 20(17): 9919-9927
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
304896EPSRC-IAA: Early Stage Commercialisation of a PET Imaging Agent for the Detection of Cardiovascular Disease and CancerAndrew SutherlandEngineering and Physical Sciences Research Council (EPSRC)EP/R511705/1Chemistry
303466HERMESHadi HeidariEuropean Commission (EC)824164ENG - Electronics & Nanoscale Engineering