A Four-Camera VGA-Resolution Capsule Endoscope System With 80-Mb/s Body Channel Communication Transceiver and Sub-Centimeter Range Capsule Localization

Jang, Jongsoo; Lee, Ji Hee; Lee, Kyoung-Rog; Lee, Jiwon; Kim, Minseo; Lee, Byoung Hun; Bae, Joonsung; Yoo, Hoi‐Jun

doi:10.1109/jssc.2018.2873630

Cited by 45 publications

(22 citation statements)

References 27 publications

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“…In a capacitive coupling method, forward signal path is established through the human body and a return path is formed through the environment. This feature allows the interconnection of devices that are both deployed on the same body surface or close to it, without the need for direct contact with the skin, but can also be used for communication between implanted devices, as was proposed recently [ 146 , 147 , 148 , 149 , 150 ]. The capacitive method allows higher achievable data rates and lower path loss compared to the galvanic IBC method, especially for higher communication distances on the body.…”

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

“…It was shown recently that a stable capacitive return path could be accomplished not only by exposing the capacitive ground electrode directly to the air (e.g., environment), but also in implantable devices in case the ground electrode was isolated from the human tissue [ 146 , 147 , 148 , 149 , 150 , 171 ]. Therefore, the capacitive IBC method emerges as an alternative to communication in the Medical Implant Communication Service (MICS) band of IEEE 802.15.6 NB PHY layer [ 40 ], UWB communication [ 188 , 189 ] or galvanic coupling intrabody communication [ 190 , 191 ], for implementation of communication with implanted devices, such as endoscopic capsules, pacemakers or cochlear implants [ 44 ].…”

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

“…A group from Korea Advanced Institute of Science and Technology developed a capsule endoscope system with four VGA-resolution cameras [ 148 , 149 ]. Communication between the capsule and on-body receiver was formed by a capacitive coupling via two gold-coated signal electrodes on the transmitter.…”

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

“…Since experiments with implanted capacitive IBC devices on living beings would be highly invasive, measurements of implantable capacitive IBC channels are usually made on human body phantoms rather than on humans. The tissue phantom in which the in-body transmitter is placed needs to be liquid, so the distance between transmitter and receiver electrodes can be adjusted during the measurements; while outer tissues in multilayer phantoms can be semi-solid or animal skin as in [ 148 , 149 ]. Receiver electrodes are placed inside the phantom for IB2IB channel measurements, and on the outer layer of a phantom for IB2OB channel measurements.…”

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

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Wireless Body Sensor Communication Systems Based on UWB and IBC Technologies: State-of-the-Art and Open Challenges

Čuljak

Vasić

Mihaldinec

et al. 2020

Sensors

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In recent years there has been an increasing need for miniature, low-cost, commercially accessible, and user-friendly sensor solutions for wireless body area networks (WBAN), which has led to the adoption of new physical communication interfaces providing distinctive advantages over traditional wireless technologies. Ultra-wideband (UWB) and intrabody communication (IBC) have been the subject of intensive research in recent years due to their promising characteristics as means for short-range, low-power, and low-data-rate wireless interfaces for interconnection of various sensors and devices placed on, inside, or in the close vicinity of the human body. The need for safe and standardized solutions has resulted in the development of two relevant standards, IEEE 802.15.4 (for UWB) and IEEE 802.15.6 (for UWB and IBC), respectively. This paper presents an in-depth overview of recent studies and advances in the field of application of UWB and IBC technologies for wireless body sensor communication systems.

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Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

Section: State Of the Art: Emerging Technologies For The Wbs Applimentioning

confidence: 99%

See 2 more Smart Citations

Wireless Body Sensor Communication Systems Based on UWB and IBC Technologies: State-of-the-Art and Open Challenges

Čuljak

Vasić

Mihaldinec

et al. 2020

Sensors

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“…Subsequently, CR begins to be applied to examination in stomach and large intestine gradually. Representative commercialized capsule products include the PillCam Capsule of Given Imaging Company (Israel), Miro Capsule of Korea, and OMOM Capsule of Chongqing Jinshan Company [2][3].…”

Section: Introductionmentioning

confidence: 99%

Self-starting Characteristics of Magnetic Controlled Spiral Capsule Robots

Bai¹,

Wu²,

Chi³

et al. 2019

JESTR

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The low power consumption and operability of magnetic controlled spiral capsule robots (MCSCRs) are important indexes that influence the interventional diagnosis and treatment of digestive tract. However, existing studies lack of analysis on the self-starting characteristics of MCSCRs. For simple and effective swimming of a MCSCR in a liquid environment, a self-starting characteristic model of MCSCR was proposed. A new portable electromagnetic propulsion device with dynamic rotating magnetic field and a MCSCR were also developed. A spatial magnetic field distribution model of a permanent magnet was constructed in accordance with the Biot-Savart law. This model was employed to determine the coupling characteristic relation between master and slave permanent magnets. A self-starting model of robots in a pipe filled with liquid was deduced, and the interaction laws of self-starting rotating speed, fluid viscosity, and axial thrust were determined. Results demonstrate that the self-starting rotating speed of robots increases with the increase in fluid viscosity, and the axial thrust is enhanced gradually as rotating speed increases. When the fluid viscosity is 0.1 Pa•s, the self-starting rotating speed reaches the minimum value (85 r/min). Self-starting control of robots with a low torque and a strong axial thrust can be realized by adjusting the self-starting distance and rotating speed between the master permanent magnet and robot. When the master permanent magnet is 29 mm away from the robot, the maximum coupling magnetic moment is the lowest (0.1 Pa•s). This study can provide theoretical supports to low-power rapid medical examination based on in vivo capsule robot.

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Investigation and Modeling of Capacitive Human Body Communication

2024

Antennas and Wireless Power Transfer Methods for Biomedical Applications

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A Four-Camera VGA-Resolution Capsule Endoscope System With 80-Mb/s Body Channel Communication Transceiver and Sub-Centimeter Range Capsule Localization

Cited by 45 publications

References 27 publications

Wireless Body Sensor Communication Systems Based on UWB and IBC Technologies: State-of-the-Art and Open Challenges

Wireless Body Sensor Communication Systems Based on UWB and IBC Technologies: State-of-the-Art and Open Challenges

Self-starting Characteristics of Magnetic Controlled Spiral Capsule Robots

Investigation and Modeling of Capacitive Human Body Communication

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