Evaluation of the Impact of Static Interference on an Empirical Data Based Static Magnetic Localization Setup for Capsule Endoscopy
TLDR
The results revealed that the measured values were for all evaluated magnet sizes of the order of the geomagnetic flux density, which is problematic since the calibration of sensors is no longer valid if the orientation of the wearable sensor array is changed.Abstract:
Abstract In this paper, the impact of interference due to the geomagnetic field on a static magnetic localization setup for capsule endoscopy, which is suitable for a wearable application, was investigated. For this purpose, a study was carried out in which the average abdomen size of 15 subjects was evaluated. With the determined geometry values, a setup consisting of three elliptical sensor rings was modeled. Simulations were performed, where the magnetic flux density was evaluated at the sensors by using different-sized magnets. The measured values were compared with each other and the geomagnetic flux density. The results revealed that the measured values were for all evaluated magnet sizes of the order of the geomagnetic flux density, which is problematic since the calibration of sensors is no longer valid if the orientation of the wearable sensor array is changed. However, it is suggested that a differential measurement is suitable for the proposed system and could reduce static interference caused by the geomagnetic field.read more
Citations
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Proceedings ArticleDOI
Performance Optimization of a Differential Method for Localization of Capsule Endoscopes
TL;DR: In this paper, simulations in which the magnetic flux density generated by different-sized permanent magnets and different sized computational domains was compared to the magnetic dipole model by simulations in COMSOL Multiphysics ®.
Posted ContentDOI
Innovative Differential Magnetic Localization Method for Capsule Endoscopy to Prevent Interference Caused by the Geomagnetic Field
TL;DR: In this paper, the authors proposed a differential magnetic localization method for capsule endoscopy to prevent interference caused by the geomagnetic field, and the effect of changing the orientation of the capsule on the localization process was also examined.
Journal ArticleDOI
Systematic Performance Evaluation of a Novel Optimized Differential Localization Method for Capsule Endoscopes
TL;DR: In this article, a static magnetic differential method for the localization of capsule endoscopes has shown promising results by investigating the difference in the measured values of the geomagnetic flux density of a representative sensor pair.
Journal ArticleDOI
Tracking the Traveled Distance of Capsule Endoscopes along a Gastrointestinal-Tract Model Using Differential Static Magnetic Localization
TL;DR: In this article , the authors used the differential static magnetic localisation method to track permanent magnets in terms of traveled distance and orientation along a length trajectory of 487.5 mm, representing a model of the winding gastrointestinal tract.
Journal ArticleDOI
Differential Geomagnetic Compensation Method for the Static Magnetic Localization of Capsule Endoscopes During Activities of the Daily Life
TL;DR: In this article , an optimized differential geomagnetic compensation method is proposed to localize capsule endoscopes, where the sensors are grouped into 26 pairs, and by subtracting the measured values of those, the geOMagnetic field cancels out.
References
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Locating Intra-Body Capsule Object by Three-Magnet Sensing System
Chao Hu,Yupeng Ren,You Xiaohe,Wanan Yang,Shuang Song,Sheng Xiang,Xiaoqi He,Zhihuan Zhang,Max Q.-H. Meng +8 more
TL;DR: In this article, a three-magnet localization method was proposed to compensate the body movement interference caused by the human body movement, where the position and orientation parameters of all the three magnets were determined by applying the optimal algorithm on the sensing data from the sensor array.
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A Novel Relative Position Estimation Method for Capsule Robot Moving in Gastrointestinal Tract
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