上海交通大学学报

上海交通大学学报

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胶囊内窥镜E类无线能量传输系统设计与实验验证

  

  1. 1. 上海交通大学 电子信息与电气工程学院，上海 200240；

    2. 上海交通大学 医疗机器人研究院，上海 200240；

    3. 上海交通大学 生物医学工程学院，上海 200240
  • 作者简介:文人庆（1999—），博士生，从事胃肠道胶囊机器人的无线能量传输技术研究
  • 基金资助:
    国家自然科学基金（62273225），上海市科委项目（21ZR1429900）,中国博士后科学基金（2022M712093）、上海市白玉兰人才计划浦江项目（24PJB037）资助项目

Design and Experimental validation of a Class E Wireless Power Transfer System for Capsule Endoscopes

  1. 1. School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China；

    2. Institute of Medical Robotics, Shanghai Jiao Tong University, 200240, Shanghai, China；

    3. School of Biomedical Engineering, Shanghai Jiaotong University, 200240, Shanghai, China

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摘要： 提供可靠稳定的电能仍是实现多功能胶囊内窥镜的最大技术阻碍。针对传统D类逆变器效率低的问题，本文设计了一种适用于无线胶囊内窥镜的E类无线能量传输系统。首先，介绍了E类无线供能系统的工作原理。然后结合设计公式和电路仿真实验确定了E类逆变器的元件参数。最后搭建了实验平台，验证了有限元仿真的准确性并评估了系统在中心平面的性能。对比实验结果表明，当接收线圈位于中心处时，E类无线能量传输系统能够提供781 mW的功率，与D类逆变器相比，能量传输效率从5.39%显著提升至7.81%。此外，接收线圈在中心平面工作时，可持续接收500 mW以上的能量。

关键词: 无线胶囊内窥镜, 无线能量传输, E类逆变器, 传输效率

Abstract: Providing reliable and stable power is still the biggest technical obstacle to realize multifunctional capsule endoscopes. Aiming at the low efficiency of traditional Class D inverter, this paper designs a Class E wireless power transfer system for wireless capsule endoscopy. Firstly, the working principle of Class E wireless power supply system is introduced. Then the component parameters of Class E inverter are determined by combining the design formula and circuit simulation experiment. Finally, an experimental platform was built to verify the accuracy of the finite element simulation and evaluate the performance of the system in the center plane. Comparative experimental results show that the Class E wireless power transfer system is capable of delivering 781 mW of power when the receiving coil is located at the center, which significantly improves the power transfer efficiency from 5.39% to 7.81% compared with the Class D inverter. In addition, the receiving coil can continuously receive more than 500 mW of energy when operating at the center plane.

Key words: Wireless capsule endoscopy, Wireless power transfer, Class E inverter, Power transfer efficiency

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