Analog Backscatter Video Transmission for Wireless Capsule Endoscope

Wireless capsule endoscopy is a fast-growing technology in healthcare systems. Due to using battery for powering the camera, light source, wireless communication, and other electronics, it has substantial limitations with the image quality, frame rate, and operating time. In this work, we propose a...

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Main Authors: Reza Noormohammadi, Ali Khaleghi, Ilangko Balasingham
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10050011/
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author Reza Noormohammadi
Ali Khaleghi
Ilangko Balasingham
author_facet Reza Noormohammadi
Ali Khaleghi
Ilangko Balasingham
author_sort Reza Noormohammadi
collection DOAJ
description Wireless capsule endoscopy is a fast-growing technology in healthcare systems. Due to using battery for powering the camera, light source, wireless communication, and other electronics, it has substantial limitations with the image quality, frame rate, and operating time. In this work, we propose a wireless passive video transmission system for capsule endoscopy, in which the power consumption is reduced by using analog camera sensor, and implementing an innovative radar technique for remote reading of the analog video signal using radio frequency backscattering. The power consumption of the capsule communication system tends to zero. The communication electronics system is minimized to a single Varactor diode with appropriate matching circuits and the image sensor power consumption is reduced by eliminating the camera sensor’s analog to digital converter. With these improvements the capsule system can operate for a longer period of time which enables the feasibility of continuous video streaming during the gastric tract screening. The design feasibility is demonstrated in a phantom experiment, and validated in an animal experiment for depths 6–11 cm using a bi-static radar system at 400 MHz, implemented using software defined radio platform.
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spelling doaj.art-c0b52d4f2ec9431bbcaf7dca4115d0ab2023-03-01T00:00:55ZengIEEEIEEE Access2169-35362023-01-0111185421855010.1109/ACCESS.2023.324801910050011Analog Backscatter Video Transmission for Wireless Capsule EndoscopeReza Noormohammadi0https://orcid.org/0000-0002-4156-828XAli Khaleghi1https://orcid.org/0000-0002-8372-1529Ilangko Balasingham2Department of Electronic Systems, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Electronic Systems, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Electronic Systems, Norwegian University of Science and Technology, Trondheim, NorwayWireless capsule endoscopy is a fast-growing technology in healthcare systems. Due to using battery for powering the camera, light source, wireless communication, and other electronics, it has substantial limitations with the image quality, frame rate, and operating time. In this work, we propose a wireless passive video transmission system for capsule endoscopy, in which the power consumption is reduced by using analog camera sensor, and implementing an innovative radar technique for remote reading of the analog video signal using radio frequency backscattering. The power consumption of the capsule communication system tends to zero. The communication electronics system is minimized to a single Varactor diode with appropriate matching circuits and the image sensor power consumption is reduced by eliminating the camera sensor’s analog to digital converter. With these improvements the capsule system can operate for a longer period of time which enables the feasibility of continuous video streaming during the gastric tract screening. The design feasibility is demonstrated in a phantom experiment, and validated in an animal experiment for depths 6–11 cm using a bi-static radar system at 400 MHz, implemented using software defined radio platform.https://ieeexplore.ieee.org/document/10050011/Analog backscatterbattery-free video streamingpassive wireless communicationremote healthcarewireless capsule endoscopy
spellingShingle Reza Noormohammadi
Ali Khaleghi
Ilangko Balasingham
Analog Backscatter Video Transmission for Wireless Capsule Endoscope
IEEE Access
Analog backscatter
battery-free video streaming
passive wireless communication
remote healthcare
wireless capsule endoscopy
title Analog Backscatter Video Transmission for Wireless Capsule Endoscope
title_full Analog Backscatter Video Transmission for Wireless Capsule Endoscope
title_fullStr Analog Backscatter Video Transmission for Wireless Capsule Endoscope
title_full_unstemmed Analog Backscatter Video Transmission for Wireless Capsule Endoscope
title_short Analog Backscatter Video Transmission for Wireless Capsule Endoscope
title_sort analog backscatter video transmission for wireless capsule endoscope
topic Analog backscatter
battery-free video streaming
passive wireless communication
remote healthcare
wireless capsule endoscopy
url https://ieeexplore.ieee.org/document/10050011/
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