Proposal of Wireless Power Supply System for Capsule Endoscope

摘要

Recently, the capsule endoscope equipped with the button cell has been put to practical use. Therefore, the diagnosis time, the number of sheets of taking a picture, and so on are limited because of the battery longevity. And, being able to do only the limited diagnosis is a fault. We propose the wireless power transmission system that uses the electromagnetic induction in the present study for the solution of this fault. In this paper, "System configuration", "Proposal of the coil installation", and "Flux density distribution by the coil shape" are described. Especially, the pin-point wireless electric power transmission aims at a possible coil shape and it aims to find it. The flux density distribution of Helmholtz coil of two shapes proposed in consideration of time when two or more coils had been combined was analysed. As a result, the characteristic of the flux density distribution that depended on the coil shape was able to be observed. In consideration of this analytical result, the system that can transmit the electric power at which we aim is examined.