Title :
Analysis of magnetic marker localization method for non-invasive detecting capsule with batteries in GI tract
Author :
He, Wenhui ; Yan, Guozheng ; Guo, Xudong
Author_Institution :
Inst. of Quality&Safety Eng., China Jiliang Univ., Hangzhou, China
Abstract :
The paper discusses the magnetic marker localization method utilizing four tri-axis magnetoresistive sensors for non-invasive detecting capsule in GI tract. Because two silver oxide button batteries in capsule, which outer shell is made from high permeable Co-Ni-Fe alloy, supply power for all modules of the capsule, and the alloy is strong permeable, the batteries will affect magnetic localization precise. Authors employ magnetic dipole theory and magnetic field superposition principle, deducts math model as considering the batteries´ affects. Experiment shows the calculation model is feasible.
Keywords :
biomedical equipment; biomedical measurement; magnetic sensors; magnetoresistive devices; battery powered GI tract capsule; cobalt nickel iron alloy; gastrointestinal tract; magnetic dipole theory; magnetic field superposition principle; magnetic marker localisation method; noninvasive detection; silver oxide button batteries; triaxis magnetoresistive sensors; Battery charge measurement; Gastrointestinal tract; Magnetic analysis; Magnetic flux; Magnetic materials; Magnetic sensors; Permanent magnets; Physiology; Radio frequency; Workstations; GIIntroduction; battery; capsule; localization; magnetic marker;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274308
