發(fā)布時間：2018-11-08 15:07

【摘要】：隨著微電子技術(shù)的發(fā)展,植入式醫(yī)療儀器在現(xiàn)代醫(yī)學(xué)領(lǐng)域應(yīng)用得越來越廣泛,而隨之而來的植入式儀器供電問題成為該項技術(shù)的瓶頸。隨著植入式器件尺寸越來越小,電池體積與老化更換等問題將會制約植入式儀器的發(fā)展。磁諧振式無線能量傳輸系統(tǒng)被認(rèn)為是為植入式醫(yī)療儀器供給能量最好的方式,在能量傳輸效率與相對位置參數(shù)方面,磁諧振式比電感耦合式系統(tǒng)更加具有優(yōu)勢,而諧振線圈的結(jié)構(gòu)與性能是影響傳輸效率的關(guān)鍵因素。 為了進(jìn)一步優(yōu)化無線能量傳輸系統(tǒng)的體積和效率,設(shè)計實現(xiàn)了柔性線圈,包括平面螺旋Litz線與立體卷曲Litz線兩種結(jié)構(gòu),并使用柔性線圈搭建無線能量傳輸系統(tǒng),分別搭建了兩線圈與四線圈系統(tǒng)。測試結(jié)果表明,立體Litz線線圈搭建的四線圈系統(tǒng)比由平面Litz線線圈搭建的系統(tǒng)具有更高的傳輸效率,更加節(jié)省體積。在傳輸距離為1cm時,由立體Litz線線圈搭建的四線圈傳輸系統(tǒng)效率比兩線圈系統(tǒng)效率高48%,在傳輸距離為1.5cm時,其效率比平面Litz線線圈搭建的四線圈系統(tǒng)效率高10%。 在線圈設(shè)計上,本文基于MEMS平面工藝,創(chuàng)新性的提出了雙電感交疊結(jié)構(gòu)的3D MEMS線圈,面積利用率更高,斜線交叉的結(jié)構(gòu)進(jìn)一步提高了線圈的可靠性。 最后,基于柔性立體電感搭建了無線充電系統(tǒng),發(fā)射端采用功率管設(shè)計E類功率放大器,輸入端加入反相器驅(qū)動電路。接收端利用分立元件搭建整流穩(wěn)壓電路,提供穩(wěn)壓輸出。經(jīng)測試輸出端可得到5V穩(wěn)壓輸出,并成功為手機(jī)充電。
[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.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM724

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 高葆新,梁春廣;高效率E類放大器[J];半導(dǎo)體技術(shù);2001年08期

，

本文編號：2318846