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IET Signal Processing

IET Wireless Sensor Systems

Micro & Nano Letters

The Journal of Engineering

Design and implementation of positioning and control systems for capsule endoscopes

Content Provider	IET Digital Library
Author	Mohammed, Ibrahim K. Sharif, Bayan S. Neasham, Jeffrey A.
Abstract	Wireless capsule endoscope (WCE) is a new diagnostic device that can be utilised for evaluating the whole digestive tract if effectively actuated. In this research, a new one degree of freedom (1DOF) actuation system based on a magnetic levitation concept is proposed for the capsule endoscope navigation system. The proposed system is used to move a permanent magnet inserted in WCE body by an arrangement of the current controlled electromagnetic actuator placed on a 3DOF movable frame. The aim of this study is to design a proportional–integral–derivative (PID) controller to suspend the capsule and keep it at a demand test region. DC and AC magnetic field-based positioning systems using the Hall effect sensor and the coil sensor, respectively are used to provide the controller by capsule position feedback. Improvement of the position feedback accuracy based on AC magnetic field using discrete Fourier transform is presented. Realistic simulation design of the system is implemented using Matlab/Simulink environment to validate the PID controller. The navigation scheme is implemented practically utilszing digital signal processor to verify the effectiveness of the controller. Finally, simulation and experimental results of the capsule navigation system are presented to show the performance of the proposed controller.
Starting Page	745
Ending Page	754
Page Count	10
ISSN	17518822
Volume Number	14
e-ISSN	17518830
Issue Number	Issue 7, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/14/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2019.0223
Journal	IET Science, Measurement & Technology
Publisher Date	2020-03-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	1DOF 3DOF Movable Frame AC Magnetic Field Biology And Medical Computing Biomedical Imaging/measurement Capsule Endoscope Navigation System Capsule Endoscopes Capsule Navigation System Capsule Position Feedback Coil Sensor Control System Current Controlled Electromagnetic Actuator Demand Test Region Diagnostic Device Digestive Tract Discrete Fourier Transform Electromagnetic Actuators Endoscopes Freedom Actuation System Hall Effect Sensor Magnetic Levitation Magnetic Levitation Concept Navigation Scheme Optical And Laser Radiation Patient Diagnostic Method And Instrumentation Permanent Magnet Permanent Magnets PID Controller Position Control Position Feedback Accuracy Proportional–integral–derivative Controller Realistic Simulation Design Sensing Device And Transducers Spatial Variables Control Statistics Three-term Control WCE Body Wireless Capsule Endoscope
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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