Design of wireless power supply optimized structure for capsule endoscopes

• Autorzy: Cui Ch. , Zhao Q. , Li Z.
• Języki publikacji: EN

Abstrakty

EN

Wireless power transmission is an important method for powering wireless capsule endoscopes, but its efficiency is low, especially when the devices move freely in random positions and orientations. To improve the stability and efficiency of the endoscope in vivo, this study designed an optimization method for planar spiral coils utilized in wireless power transfer for capsule endoscopes. An optimized structure using six planar spiral coils was first proposed as the transmitting coil, and the efficiency of a series-parallel wireless power transmission model was analyzed. A theoretical model was then examined for the magnetic field vector distributions of the spiral-type transmitting coil by using an elliptic coordinate system. The relationship between the position of the receiving coil and the coupling coefficient was determined when the position and attitude changed. Finally, the experimental device of the wireless power supply system of the endoscope was designed with a class-E amplifier and Liz coil. The simulation and experimental results showed that the proposed method can generate high intensity magnetic field uniform, which can improve the efficiency of the wireless power transmission in the case of axial deviation and angular misalignment. The experimental results also indicated that the proposed scheme can meet the needs of the power supply of wireless endoscopes.

Słowa kluczowe

EN

wireless power transmission; wireless capsule endoscopy; spiral-type coil antenna; magnetic coupling; magnetic field vector

PL

bezprzewodowy przesył energii; endoskopia kapsułkowa; sprzężenie magnetyczne; wektor pola magnetycznego

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2016
• Tom: Vol. 96, nr 2
• Strony: 101--109
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Cui Ch.

• Department of Information and Control Engineering, Liaoning Shihua University, Liaoning Fushun, 113001, China

autor

Zhao Q.

• Department of Information and Control Engineering, Liaoning Shihua University, Liaoning Fushun, 113001, China

autor

Li Z.

• School of Science, University of Southern Queensland, Toowoomba, Australia

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.