Sun Tianjia, Xie Xiang, Li Guolin, Gu Yingke, Deng Yangdong, Wang Ziqiang, Wang Zhihua
Institute of Microelectronics, Department of Electronic Engineering, Tsinghua University, China.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:6531-4. doi: 10.1109/IEMBS.2010.5627095.
This paper investigates the design and optimization of a wireless power transmission link targeting Micro-Ball Endoscopy applications. A novel asymmetric resonant coupling structure is proposed to deliver power to an endoscopic Micro-Ball system for image read-out after it is excreted. Such a technology enables many key medical applications with stringent requirements for small system volume and high power delivery efficiency. A prototyping power transmission sub-system of the Micro-Ball system was implemented. It consists of primary coil, middle resonant coil, and cube-like full-direction secondary receiving coils. Our experimental results proved that 200mW of power can be successfully delivered. Such a wireless power transmission capability could satisfy the requirements of the Micro-Ball based endoscopy application. The transmission efficiency is in the range of 41% (worst working condition) to 53% (best working condition). Comparing to conventional structures, Asymmetric Resonant Coupling Structure improves power efficiency by 13%.
本文研究了针对微型球囊内窥镜应用的无线电力传输链路的设计与优化。提出了一种新型非对称谐振耦合结构，以便在微型球囊系统排出体外后为其提供电力以进行图像读取。这种技术能够实现许多对系统体积小和功率传输效率要求严格的关键医疗应用。实现了微型球囊系统的原型电力传输子系统。它由初级线圈、中间谐振线圈和立方体形全向次级接收线圈组成。我们的实验结果证明，可以成功传输200毫瓦的功率。这样的无线电力传输能力能够满足基于微型球囊的内窥镜应用的要求。传输效率在41%（最差工作条件）至53%（最佳工作条件）范围内。与传统结构相比，非对称谐振耦合结构将功率效率提高了13%。
