Characteristics of a Hybrid Three-Dimensional Transmitting Coil for Wireless Power Transmission of Intestinal Robot

doi:10.16183/j.cnki.jsjtu.2021.356

Abstract

Abstract:

In order to meet the needs of the intestinal robot to obtain power stably through wireless methods in different positions and postures, and to reduce the volume of the intestinal robot as much as possible, the transmitting coil is required to have the ability to generate spatial multi-dimensional magnetic fields. A hybrid transmitting coil structure is proposed, which combines Helmholtz coil pair and saddle-shaped coil pair. The structure is compact, and its symmetry can be used to generate a three-dimensional magnetic field without dead zone through rotation. The characteristics of the two types of coils and the combined characteristics are analyzed separately. The simulation and experimental results show that at the excitation of 2 A current, the minimum transmission efficiency of 3.44% and the received power of 1 204 mW can be obtained at the center of the coil. The minimum positional uniformity is 88.1%, and the three-dimensional power coverage can be achieved.

Key words: intestinal robot, three-dimensional power transmitting coil, near-field wireless power transmission, magnetically-coupled resonance

CLC Number:

TP242.6
TN98

ZHUANG Haoyu, YAN Guozheng, FEI Qian, WANG Wei, ZHAO Kai. Characteristics of a Hybrid Three-Dimensional Transmitting Coil for Wireless Power Transmission of Intestinal Robot[J]. Journal of Shanghai Jiao Tong University, 2023, 57(5): 545-551.

Figures/Tables 12

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