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Position Detection of a Capsule-type Endoscope by Magnetic Field Sensors  

Park, Joon-Byung (한국항공대학교 대학원 항공우주및기계공학과)
Kang, Heon (한국항공대학교 대학원 항공우주및기계공학과)
Hong, Yeh-Sun (한국항공대학교 항공우주및기계공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.24, no.6, 2007 , pp. 66-71 More about this Journal
Abstract
Development of a locomotive mechanism for the capsule type endoscopes will largely enhance their ability to diagnose disease of digestive organs. As a part of it, there should be provided a detection device of their position in human organs for the purpose of observation and motion control. In this paper, a permanent magnet outside human body was employed to project magnetic field on a capsule type endoscope, while its position dependent flux density was measured by three hall-effect sensors which were orthogonally installed inside the capsule. In order to detect the 2-D position data of the capsule with three hall-effect sensors including the roll, pitch and yaw angle, the permanent magnet was extra translated during the measurement. In this way, the 2-D coordinates and three rotation angles of a capsule endoscope on the same motion plane with the permanent magnet could be detected. The working principle and performance test results of the capsule position detection device were introduced in this paper showing that they could be also applied to 6-DOF position detection.
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Wang, X., Meng, M. and Chan, Y, 'A low-cost tracking method based on magnetic marker for capsule endoscope,' Proceedings of Int. Canf. on Information Acquisition, pp. 524-526, 2004   DOI
2 Yabukami, S., Kikuchi, H. and Yamaguchi, M., 'Motion capture system of magnetic markers using three-axial magnetic field sensor,' IEEE Trans. on Magnetics, Vol. 36, No.5, pp. 3646-3648, 2000   DOI   ScienceOn
3 Prakash, N. M. and Spelman, F., 'Localization of a magnetic marker for GI mobility studies: an in vitro feasibility study,' Proceedings of the 19th Annual Int. Conf. of the IEEE/EMBS, pp. 2394-2397, 1997
4 Nagaoka, T. and Uchiyama, A., 'Development of a small wireless position sensor for medical capsule devices,' Proceedings of the 26th Annual Int. Conf. of the IEEE/EMBS, pp. 2137-2140, 2004   DOI
5 Kirsch, S. R. and Schilling, C., 'Errors in systems using magnetic fields to locate object,' US patent 6,553,326
6 Furlani, E., Permanent magnet and electromechanical devices,' Academic press, 2001
7 Hong, YS., Choi, I.S. and Kim, B.G, 'Influence of dither motion on the friction coefficient of a capsuletype endoscope,' Journal of the KSPE, Vol. 22, No.8, pp. 57-63, 2005   과학기술학회마을