摘要
目的 :基于磁耦合谐振技术,设计一种用于体内植入式医疗设备的无线电能传输装置。方法 :该装置由电能发射端和接收端2个部分组成。电能发射端由高频正弦交流电源和LC谐振发射线圈组成,接收端由LC谐振接收线圈、整流滤波电路、DC-DC稳压电路和负载组成。通过发射功率源工作频率同步跟踪发射回路固有谐振频率的控制方法,避免谐振频率的失谐;根据接收能量的变化,动态调整发射功率的大小,保证能量传输始终处于最佳状态。结果:该装置对3W红光发光二极管(light emitting diode,LED)进行供电时,当接收线圈位于发射线圈中心点时,接收功率为900.36 mW;当接收线圈距离发射线圈中心点垂直高度分别为5、10、15、20 cm时,接收功率为674.4、364.8、179.28、94.92 mW。LED的亮度随传输距离的增大逐渐减弱。结论:该装置在一定的空间距离范围内可以为体内植入式医疗设备的正常工作提供必要的电能量,通过不断优化与完善,将在医疗领域有广泛的应用前景。
Objective To design a wireless power transmission equipment based on magnetic resonances for implanted medical device. Methods The device was composed of transmitting terminal and receiving terminal. The transmitting terminal was consisted of a sinusoidal AC power of high frequency and LC resonant circuits, and the receiving one was consisted of LC resonant circuits, rectifier filter circuit, DC-DC voltage stabilizing circuit and load. The power of the transmitting loop changed in accordance with the receiving loop to keep the best condition of power transmission. Results The results were measured when the power of the R-leds changed with the distance between the transmitting and receiving coils. It showed that the received power was 900.36 m W with distance of 0 cm, 674.4 m W of 5 cm, 364.8 m W of 10 cm,179.28 m W of 15 cm and 94.92 m W of 20 cm. Conclusion The wireless power transmission device based on magnetic resonances can be used for powering the implanted medical equipments in a certain distance and will provide possibilities in the field of healthcare.
作者
王磊
吕菊保
田云杰
赵军
王宏
沙洪
WANG Lei LYU Ju-bao TIAN Yun-jie ZHAO Jun WANG Hong SHA Hong(Institute of Biomedical Engineering, Chinese Academy of Medical Sciences ＆ Peking Union Medical College, Tianjin 300192,China Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability, Hebei University of Technology, Tianjin 300130, China)
出处
《医疗卫生装备》
CAS
2017年第4期6-9,共4页
Chinese Medical Equipment Journal
基金
国家自然科学基金(51407058)
中央高校基本科研业务费专项资金资助项目
关键词
植入式医疗设备
无线供电
磁耦合谐振
电路
线圈
implanted medical device
wireless power supply
magnetic coupled vibration
circuit
loop
