摘要
为了给消化道内姿态和位置均不断变化的胶囊内窥镜提供能量,提出了一种基于电磁感应的无线能量传输系统。该系统以亥姆霍兹线圈作为体外发射线圈,在覆盖人体消化道区域内产生均匀交变磁场;以三维正交线圈作为体内接收线圈,在消化道中的不同位置、以不同姿态均获得较为稳定的能量。设计、实现了无线能量传输系统的体外发射装置和体内能量接收装置,并通过实验验证了系统的有效性。结果表明:当发射功率为25W时,在胶囊内窥镜位置和姿态任意变化的情况下,传输功率可达320mW以上。
In order to deliver power to the capsule endoscope,whose position and orientation are always changing when traveling along the alimentary tract,a wireless power transmission system based on electromagnetic coupling was proposed.The system is composed of Helmholtz transmitting coil and three-dimensional receiving coil. Helmholtz coil outside the body generates a uniform magnetic field covering the whole alimentary tract; three-dimensional coil inside retrieves stable power regardless of its position and orientation. The transmitter and receiver were designed and implemented,and the experiments validated the feasibility of the system. The results show that at least 320mW of usable power can be transmitted to capsule endoscope when its position and orientation are changing at random and the transmitting power is 25W.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2010年第3期490-494,共5页
Journal of Biomedical Engineering
基金
国家"863"资助项目(2006AA04Z368)
关键词
无线能量传输
电磁感应
亥姆霍兹线圈
三维接收线圈
Wireless power transmission
Electromagnetic coupling
Helmholtz coil
Three-dimensional receiving coil
