一种可植入光遗传电路中无线供电抑制EMI方法  

A wireless power supply EMI suppression method in implantable optogenetic circuits

作　　者：吉彦平 李嘉伟 柴东林 赵伯言 赵燕冉 王诗睿 王文思 郑梦沂 Ji Yanping;Li Jiawei;Chai Donglin;Zhao Boyan;Zhao Yanran;Wang Shirui;Wang Wensi;Zheng Mengyi(Key Laboratory of Optoelectronic Techology,Ministry of Education,Beijing University of Technology,Beijing 100124,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 100096,China;School of Social Sciences,China University of Political Science and Law,Beijing 100091,China)

机构地区：[1]北京工业大学光电子技术教育部重点实验室,北京100124 [2]华北电力大学控制与计算机工程学院,北京100096 [3]中国政法大学社会学院,北京100091

出　　处：《电子技术应用》2024年第1期101-108,共8页Application of Electronic Technique

基　　金：国家重点研发计划(2020YFC1807-903)。

摘　　要：提出了一种无线可植入光遗传硬件结构。在光遗传实验过程中,生物体体外采用磁谐振式无线能量技术对体内电路进行供电;然而在无线能量传输(WPT)过程中需要借助磁耦合将发射端电能转化成高频磁场,磁场是无线能量传输系统传输电能的介质,其带来的电磁辐射(EMI)问题将对于生物体安全带来威胁;因此,设计了一种改进的展频和谐波抑制无线能量供电电路。首先介绍了系统的工作原理,然后采用电路理论分析了该电路的特性,并设计了发射端与接收端电路并进行了仿真,最后设计了硬件电路样机并在实验环境下按照植入式供电电路电磁兼容标准进行了验证。实验结果表明,所设计的系统能够有效抑制EMI,并能持续稳定对体内植入电路有效供电。In this paper,a wireless implantable optogenetic hardware structure is proposed.In the experimental process,a magnetic resonant wireless energy technology is used outside the organism to power the in vivo circuit;however,in the Wireless Energy Transfer(WPT)process,it is necessary to convert the electrical energy at the transmitting end into a high-frequency magnetic field with the help of magnetic coupling,and the magnetic field is the medium for transmitting electrical energy in the wireless energy transfer system,and the Electromagnetic Radiation(EMI)problem brought by it will be a threat to the organism.Therefore,an improved frequency spreading and harmonic suppression wireless energy supply circuit is designed.Finally,the prototype hardware circuit was designed and verified in an experimental environment according to the EMC standard for implantable power supply circuits.The experimental results show that the designed system can effectively suppress EMI and provide continuous and stable power supply to the implanted circuits in the body.

关 键 词：光遗传 无线能量传输 电磁辐射 电路仿真 硬件验证 

分 类 号：TN383[电子电信—物理电子学] TN383.1