微型磁共振无线能量传输系统及其应用研究
发布时间：2018-11-08 15:07
【摘要】：随着微电子技术的发展,植入式医疗仪器在现代医学领域应用得越来越广泛,而随之而来的植入式仪器供电问题成为该项技术的瓶颈。随着植入式器件尺寸越来越小,电池体积与老化更换等问题将会制约植入式仪器的发展。磁谐振式无线能量传输系统被认为是为植入式医疗仪器供给能量最好的方式,在能量传输效率与相对位置参数方面,磁谐振式比电感耦合式系统更加具有优势,而谐振线圈的结构与性能是影响传输效率的关键因素。 为了进一步优化无线能量传输系统的体积和效率,设计实现了柔性线圈,包括平面螺旋Litz线与立体卷曲Litz线两种结构,并使用柔性线圈搭建无线能量传输系统,分别搭建了两线圈与四线圈系统。测试结果表明,立体Litz线线圈搭建的四线圈系统比由平面Litz线线圈搭建的系统具有更高的传输效率,更加节省体积。在传输距离为1cm时,由立体Litz线线圈搭建的四线圈传输系统效率比两线圈系统效率高48%,在传输距离为1.5cm时,其效率比平面Litz线线圈搭建的四线圈系统效率高10%。 在线圈设计上,本文基于MEMS平面工艺,创新性的提出了双电感交叠结构的3D MEMS线圈,面积利用率更高,斜线交叉的结构进一步提高了线圈的可靠性。 最后,基于柔性立体电感搭建了无线充电系统,发射端采用功率管设计E类功率放大器,输入端加入反相器驱动电路。接收端利用分立元件搭建整流稳压电路,提供稳压输出。经测试输出端可得到5V稳压输出,并成功为手机充电。
[Abstract]:With the development of microelectronic technology, implantable medical instruments are more and more widely used in the field of modern medicine, and the power supply problem of implantable medical instruments becomes the bottleneck of this technology. As the size of implanted devices becomes smaller and smaller, the problems of battery volume and aging replacement will restrict the development of implantable devices. Magnetic resonance wireless energy transmission system is considered to be the best way to supply energy for implanted medical instruments. In terms of energy transmission efficiency and relative position parameters, magnetic resonance system has more advantages than inductively coupled system. The structure and performance of the resonant coil are the key factors affecting the transmission efficiency. In order to further optimize the volume and efficiency of wireless energy transmission system, flexible coils are designed and implemented, including planar spiral Litz lines and stereoscopic curled Litz lines, and flexible coils are used to build wireless energy transmission systems. Two coils and four coils are built respectively. The test results show that the four-coil system constructed by three-dimensional Litz wire coil has higher transmission efficiency and more volume saving than that of plane Litz wire coil system. When the transmission distance is 1cm, the efficiency of the four-coil transmission system constructed by the three-dimensional Litz coil is higher than that of the two-coil system. When the transmission distance is 1.5cm, its efficiency is 10% higher than that of the four-coil system constructed by the planar Litz coil. In the design of on-line coil, based on MEMS plane technology, a 3D MEMS coil with double inductance overlapping structure is proposed. The area utilization ratio is higher, and the reliability of the coil is further improved by the cross-diagonal structure. Finally, a wireless charging system is built based on flexible stereoscopic inductance. The power amplifier is designed by power tube at the transmitter, and the inverter drive circuit is added to the input. The receiver uses discrete components to build rectifier and voltage regulator to provide steady voltage output. After testing the output end can get 5 V voltage stable output, and successfully charge the phone.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724
本文编号：2318846
[Abstract]:With the development of microelectronic technology, implantable medical instruments are more and more widely used in the field of modern medicine, and the power supply problem of implantable medical instruments becomes the bottleneck of this technology. As the size of implanted devices becomes smaller and smaller, the problems of battery volume and aging replacement will restrict the development of implantable devices. Magnetic resonance wireless energy transmission system is considered to be the best way to supply energy for implanted medical instruments. In terms of energy transmission efficiency and relative position parameters, magnetic resonance system has more advantages than inductively coupled system. The structure and performance of the resonant coil are the key factors affecting the transmission efficiency. In order to further optimize the volume and efficiency of wireless energy transmission system, flexible coils are designed and implemented, including planar spiral Litz lines and stereoscopic curled Litz lines, and flexible coils are used to build wireless energy transmission systems. Two coils and four coils are built respectively. The test results show that the four-coil system constructed by three-dimensional Litz wire coil has higher transmission efficiency and more volume saving than that of plane Litz wire coil system. When the transmission distance is 1cm, the efficiency of the four-coil transmission system constructed by the three-dimensional Litz coil is higher than that of the two-coil system. When the transmission distance is 1.5cm, its efficiency is 10% higher than that of the four-coil system constructed by the planar Litz coil. In the design of on-line coil, based on MEMS plane technology, a 3D MEMS coil with double inductance overlapping structure is proposed. The area utilization ratio is higher, and the reliability of the coil is further improved by the cross-diagonal structure. Finally, a wireless charging system is built based on flexible stereoscopic inductance. The power amplifier is designed by power tube at the transmitter, and the inverter drive circuit is added to the input. The receiver uses discrete components to build rectifier and voltage regulator to provide steady voltage output. After testing the output end can get 5 V voltage stable output, and successfully charge the phone.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724
【参考文献】
相关期刊论文 前1条
1 高葆新,梁春广;高效率E类放大器[J];半导体技术;2001年08期
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