胃肠道胶囊机器人无线能量传输系统中发射线圈优化设计  

Optimization of transmitting coil in wireless energy transmission system for gastrointestinal capsule micro-robot

作　　者：佘健健 华浩然 李宝军 陈将伟[1] SHE Jian-jian;HUA Hao-ran;LI Bao-jun;CHEN Jiang-wei(College of Electronic and Optical Engineering,College of Flexible Electronics(Future Technology)Nanjing University of Posts&Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院柔性电子(未来技术)学院,江苏南京210003

出　　处：《磁性材料及器件》2024年第2期37-43,共7页Journal of Magnetic Materials and Devices

摘　　要：基于无线能量传输的模型与原理,仿真分析了几种不同类型发射线圈的磁场分布。结果表明,线圈磁芯开口大小、磁芯与空气界面的形状、线圈放置的位置都会对发射线圈附近磁场分布产生影响。进而优化出扇环型发射线圈,当线圈中通以频率218 kHz、幅值1.125 A的电流时,可在一定的空间区域形成3.0~4.7 G、比较均匀的磁场,满足胃肠道胶囊机器人的供能需求。相较于已有同用途的发射线圈,优化设计的发射线圈结构简单、整体尺寸显著缩小,同时采用较小的电流就能满足供能需求。研究工作可为优化设计无线能量传输系统中的发射线圈提供新的思路和可行途径。Based on the model and principle of wireless power transfer,the magnetic field distribution of several different types of transmitting coils have been simulated and analyzed,which demonstrated that magnetic fields near the transmitting coil may be affected by size of the magnetic core opening,shape of interface between the magnetic material and air,and position of the coil located.Furthermore,a fan-ring shaped transmitting coil is optimized,when the coil is loaded with a current of 218 kHz frequency and 1.125 A amplitude,fields with magnetic flux density of 3.0-4.7 G will arise in a certain large space area,which may meet energy demand of the gastrointestinal capsule micro-robot.Comparing with the existing transmitting coils with the same purpose,the transmitting coil optimized in this paper has simple structure,significantly reduced size,and can meet the energy demand with smaller current.This work may provide a new feasible way to optimize transmitting coil applied in wireless energy transmission system.

关 键 词：胃肠道胶囊机器人 无线能量传输 发射线圈 磁芯 磁场 

分 类 号：TL622[核科学技术—核技术及应用]