School of Mechanical Engineering, Yonsei University, Seoul, Korea.
Med Biol Eng Comput. 2012 Sep;50(9):973-80. doi: 10.1007/s11517-012-0939-z. Epub 2012 Jul 18.
Induction coils were fabricated based on flexible printed circuit board for inductive transcutaneous power transmission. The coil had closed magnetic circuit (CMC) structure consisting of inner and outer magnetic core. The power transmission efficiency of the fabricated device was measured in the air and in vivo condition. It was confirmed that the CMC coil had higher transmission efficiency than typical air-core coil. The power transmission efficiency during a misalignment between primary coil and implanted secondary coil was also evaluated. The decrease of mutual inductance between the two coils caused by the misalignment led to a low efficiency of the inductive link. Therefore, it is important to properly align the primary coil and implanted secondary coil for effective power transmission. To align the coils, a feedback coil was proposed. This was integrated on the backside of the primary coil and enabled the detection of a misalignment of the primary and secondary coils. As a result of using the feedback coil, the primary and secondary coils could be aligned without knowledge of the position of the implanted secondary coil.
基于柔性印刷电路板制作了感应线圈，用于感应式经皮电能传输。该线圈采用由内、外铁芯构成的闭合磁路（CMC）结构。在空气中和体内条件下测量了所制作器件的电能传输效率。结果证实，CMC 线圈比典型的空心线圈具有更高的传输效率。还评估了初级线圈与植入式次级线圈之间发生不对准情况下的电能传输效率。由于不对准导致两个线圈之间的互感降低，导致感应链路的效率降低。因此，为了实现有效的电能传输，正确对准初级线圈和植入式次级线圈非常重要。为了对准线圈，提出了一个反馈线圈。该反馈线圈集成在初级线圈的背面，能够检测初级和次级线圈的不对准情况。通过使用反馈线圈，即使不知道植入式次级线圈的位置，也可以对准初级和次级线圈。
