The research on implantable ultrasonic coupling wireless power transmission systems has not been systematically analyzed from the sound field theory, and the influencing factors of implanted ultrasonic coupling wireless power transmission systems based on the far-field model are proposed in this paper. Firstly, the far-field model is constructed. On this basis, the main factors affecting the ultrasonic energy transmission in the system are discussed. The COMSOL finite element simulation software was used to simulate the ultrasonic coupling wireless energy transmission system in human tissue environment, and the directivity of the energy transmission system was verified. The system experiment platform is built to analyze the energy transmission under different distances, different sound source frequencies and different sound source excitations, and compare with the numerical simulation data. Finally, the influence of different factors on the energy transmission system is verified. It provides an effective reference for further research on implantable ultrasonic coupling wireless power transmission systems.
1. Xiong, H., et al., "Design of wireless power transfer for implantable medical devices inweak power receiving," Journal of Tianjin Polytechnic University, Vol. 36, No. 3, 60-64, 2017.
2. Zhang, B., X. Shu, and R. Huang, "The development of inductive and resonant wireless power transfer technology," Transactions of China Electrotechnical Society, Vol. 32, No. 18, 3-17, 2017.
3. Cheng, S., et al., "Key technologies and applications of wireless power transmission," Transactions of China Electrotechnical Society, Vol. 30, No. 19, 68-84, 2015. doi:10.1149/2.0991506jes
4. Li, Q., et al., "Parameter optimization of magnetic coupling energy transfer for active implantable systems," Journal of Tsinghua University (Natural Science Edition), Vol. 55, No. 3, 351-355, 2015.
5. Yin, C. and B. Xu, "Wireless power transfer for implantable ventricular assistance: A review," Transactions of China Electrotechnical Society, Vol. 30, No. 19, 103-109, 2015.
6. Roes, M. G. L., M. A. M. Hendrix, and J. L. Duarte, "Contactless energy transfer through air by means of ultrasound," IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society, 1238-1243, Melbourne, VIC, 2011.
7. Zhang, J., et al., "Feasibility of ultrasonic wireless power transmission," Advanced Technology of Electrical Engineering and Energy, Vol. 30, No. 2, 66-69+74, 2011.
8. Dai, X., et al., "Determining the maximum power transfer condition for ultrasonic power transfer system," 2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC), 1-6, Auckland, 2016.
9. Lee, S. Q., W. Youm, and G. Hwang, "Biocompatible wireless power transferring based on ultrasonic resonance devices," ICA 2013 Montreal Montreal, 2-7, Canada, Jun. 2013.
10. Ishiyama, T., Y. Kanai, J. Ohwaki, and M. Mino, "Impact of a wireless power transmission system using an ultrasonic air transducer for low-power mobile applications," IEEE Symposium on Ultrasonics, Vol. 2, 1368-1371, 2003.
11. Awal, Md. R., M. Jusoh, T. Sabapathy, M. R. Amarudin, and R. A. Rahim, "State-of-the-art develop-ments of acoustic energy transfer," International Journal of Antennas and Propagation Volume 2016, Article ID 3072528, 14 pages, 2016.
12. Kim, C., et al., "Design of miniaturized wireless power receivers for mm-sized implants," 2017 IEEE Custom Integrated Circuits Conference (CICC), 1-8, Austin, TX, 2017.
13. Shahab, S., M. D. Gray, and Erturk, "Ultrasonic power transfer from a spherical acoustic wave source to a free-free piezoelectricreceiver: Modeling and experiment," Journal of Applied Physis, Vol. 117, No. 10, 2015.
14. Hori, Y., et al., "Design of anti-resonance transducer and its abilities for efficient ultrasonic wireless power transmission system," 2011 41st European Microwave Conference, 67-70, Manchester, 2011.
15. Shmilovitz, D., S. Ozeri, C.-C. Wang, and B. Spivak, "Noninvasive control of the power transferred to an implanted device by an ultrasonic transcutaneous energy transfer link," IEEE Transactions on Biomedical Engineering, Vol. 61, No. 4, 995-1004, Apr. 2014. doi:10.1109/TBME.2013.2280460
16. Meng, M. and M. Kiani, "A hybrid inductive ultrasonic link for wireless power transmission to millimeter-sized biomedical implants," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 64, No. 10, 1137-1141, Oct. 2017. doi:10.1109/TCSII.2016.2626151
17. Chou, T.-C., R. Subramanian, J. Park, and P. P. Mercier, "A miniaturized ultrasonic power delivery system," 2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings, 440-443, Lausanne, 2014.
18. Fai, L. H., D. Xin, and H. Aiguo, "Electrical modeling of a wireless ultrasonic power transfer system," Transactions of China Electrotechnical Society, Vol. 30, No. 19, 85-89, 2015.
19. Leung, H. F. and A. P. Hu, "Modeling the contact interface of ultrasonic power transfer system based on mechanical and electrical equivalence," IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 6, No. 2, 800-811, Jun. 2018. doi:10.1109/JESTPE.2017.2720852
20. Ozeri, S. and D. Shmilovitz, "Ultrasonic transcutaneous energy transfer for powering implanted devices," Ultrasonics, Vol. 50, No. 6, 556-566, 2014. doi:10.1016/j.ultras.2009.11.004
21. Mehdizadeh, E. and G. Piazza, "Chip-scale near-field resonant power transfer via elastic waves," Journal of Microelectromechanical Systems, Vol. 26, No. 5, 1155-1164, Oct. 2017. doi:10.1109/JMEMS.2017.2719944
22. Guida, R., G. E. Santagati, and T. Melodia, "A 700 kHz ultrasonic link for wireless powering of implantable medical devices," 2016 IEEE Sensors, 1-3, Orlando, FL, 2016.
27. Chen, A., X. Chen, and C. Dong, "Application value of sound velocity matching technology in imaging normal human tissues and organs," Journal of Practical Medicine, Vol. 30, No. 19, 3139-3141, 2014.