Sensor Arrangement Optimization of Wearable Model in Magnetic Localization System

Abstract:

A magnetic localization and orientation system is used to track the movement of the capsule endoscope during the gastrointestinal examination process. The system is made of a magnetic sensors array collecting the intensity of the magnetic field from a magnet in the capsule. In this paper, we try to optimize the sensor arrangement of wearable model that likes elliptical cylinder around the human body, to improve the tracking precision. Different sensor arrangement schemes are evaluated, and the tracking accuracy can be significantly increased with the appropriate arrangement. In addition, we presented a real time localization algorithm to compute uncertain 3D locus for estimating the tracing performance of the capsule.

• Periodical: Advanced Materials Research (Volume 902)
• Pages: 306-311
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.902.306
• Online since: February 2014
• Authors: Wen Hu Wang, Chao Hu, Wei Xing Lin, Jian Meng Bao
• Keywords: Capsule Endoscope, Levenberg-Marquardt (LM) Algorithm, Magnetic Localization, Sensor Arrangement, Wearable Model

References

[1] Chao Hu, Max Q. -H. Meng. Mrinal Mandal, Efficient Magnetic Localization and Orientation Technique for Capsule Endoscopy, International Journal of Information Acquisition Vol. 2, No. 1(2005) 23-36, World Scientific Publishing Company.

DOI: 10.1109/iros.2005.1545490

[2] Chao Hu, Max Q. -H. Meng. Mrinal Mandal, et al, Robot Rotation Decomposition Using Quaternions, Proceedings of the 2006 IEEE International Conference on Mechatronics and Automation Luoyang, China, June 25 - 28, (2006).

DOI: 10.1109/icma.2006.257789

[3] Young, Kyoung-chul Kong, Jinhoon Cha, Doyoung Jeon, et al, A Rotational Micro Biopsy Device for the Capsule Endoscope, Intelligent Robots and Systems, 2005. (IROS 2005). 2005 IEEE/RSJ International Conference on.

DOI: 10.1109/iros.2005.1545441

[4] Wilfried Andra, Henri Danan, Walter Kirmße, Hans-Helmar Kramer, Pieter Saupe, Rainer Schmieg, and Matthias E Bellemann, A novel method for real-time magnetic marker monitoring in the gastrointestinal tract, Physics in Medicine and Biology, 45 (2000).

DOI: 10.1088/0031-9155/45/10/322

[5] V. Schlageter, P. -A. Besse, R.S. Popovic, and P. Kucera, Tracking system with five degrees of freedom using 2D-array of Hall sensors and a permanent magnet, Sensors and Actuators A 92 (2001), p.37~42.

DOI: 10.1016/s0924-4247(01)00537-4

[6] Shuang Song, Chao Hu, Mao Li and Wanan Yang, Real Time Algorithm for Magnet's Localization in Capsule Endoscope", Automation and Logistics, 2009. ICAL , 09. 2030 – 2035(2009) IEEE International Conference on.

DOI: 10.1109/ical.2009.5262602