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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 provide energy for the capsule endoscope with changing posture and position in the digestive tract, a wireless energy transmission system based on electromagnetic induction is proposed. The system uses the Helmholtz coil as an external transmitting coil to generate a uniform alternating magnetic field in a region covering the human digestive tract. Taking the three-dimensional quadrature coil as a receiving coil in vivo, the system is stable at different positions in the digestive tract at different positions energy of. Design and implementation of an in vitro transmitting device and an in-vivo energy receiving device of a wireless energy transmission system, and verify the effectiveness of the system through experiments. The results show that the transmit power can reach more than 320mW under the condition of arbitrary change of position and attitude of the capsule endoscope when the transmitting power is 25W.