Wearable Magnetic Localization System with Noise Cancellation for Wireless Capsule Endoscopy

Abstract

The localization of the wireless capsule endoscopy can be achieved through the magnetic localization system. With the interference of the geomagnetic field, the state-of-art passive magnetic localization system is designed to be static. In this work, a wearable magnetic localization system with noise cancellation is proposed. By mitigating the major part of the geomagnetic field, the proposed system is able to achieve the same level positioning accuracy as the full noise canceled static system but making the system portable. The proposed system achieves an overall positioning error below 9 mm along each axis and around 12 degrees angle error within the area of 380 mm by 270 mm by 240 mm. The proposed system provides a possible solution for wearable localization system designed for biomedical devices.