A New 6D Magnetic Localization Technique forWireless Capsule Endoscope Based on aRectangle Magnet

YANG Wan'an; HU Chao; Max Q.H. Meng; DAI Houde; CHEN Dongmei

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Article Navigation > Chinese Journal of Electronics > 2010 > 19(2): 360-364

YANG Wan'an, HU Chao, Max Q.H. Meng, DAI Houde, CHEN Dongmei. A New 6D Magnetic Localization Technique forWireless Capsule Endoscope Based on aRectangle Magnet[J]. Chinese Journal of Electronics, 2010, 19(2): 360-364.

Citation:

YANG Wan'an, HU Chao, Max Q.H. Meng, DAI Houde, CHEN Dongmei. A New 6D Magnetic Localization Technique forWireless Capsule Endoscope Based on aRectangle Magnet[J]. Chinese Journal of Electronics, 2010, 19(2): 360-364.

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A New 6D Magnetic Localization Technique forWireless Capsule Endoscope Based on aRectangle Magnet

1.
Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China)(2.Shenzhen Institute of Advanced Integration Technology, Chinese Academy of Sciences/The Chinese University of HongKong, Shenzhen Institute of Advanced Technology, CAS, Shenzhen 518067, China)(3.Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, N.T. Hong Kong)(4.Graduate School of the Chinese Academy of Sciences, Beijing 100049, China)(5.Department of Computer and Information Technology, Yibin University, Yibin 644000, China

Received Date: 2008-07-20
Rev Recd Date: 1900-01-01
Publish Date: 2010-04-05

Abstract

Abstract

To build a wireless active endoscope with
external guidance for controllable and interactive GI track
diagnosis, a real time system for 3D localization and 3D
orientation is necessary. An approach is to enclose a small
rectangle permanent magnet in the capsule. The magnetic
¯eld, produced by the rectangle magnet around the body,
can be detected by magnetic sensors outside the patient's
body. With these sensor data, the 3D localization and 3D
orientation parameters can be computed by the nonlinear
optimization algorithm based on the mathematic model of
the rectangular magnet's magnetic ¯eld. Simulation exper-
iments show that the proposed algorithm works e®ectively,
and has good accuracy and time e±ciency when the initial
guess of the parameters are within some predetermined
ranges.
- Wireless active endoscope,
- 6D localiza-tion and orientation,
- Rectangle magnet,
- Nonlinear mini-mization.