中文摘要：

体外能量发射装置是胶囊内窥镜无线供能系统中很重要的一部分。为了使胶囊内窥镜获得较稳定能量，同时研究传输效率和人体安全性与谐振频率的关系，设计了一种可在人体消化道区域内产生均匀交变电磁场、谐振频率在10—400kHz范围内调节的体外能量发射装置。根据无线供能系统的要求设计了该装置的发射线圈、驱动电路，并实际搭建了整个装置。实际使用验证了该能量发射装置设计的可行性，并取得了较好的效果。

英文摘要：

Power transmitting equipment outside the body is a very important part of the wireless power transmission for capsule endoscopy. In order to achieve stable power and study the relationship between the transmission efficiency, human safety and resonance frequency, an equipment of power transmitter was proposed. The equipment could generate a uniform variable electromagnetic field cover whole of alimentary tract, and the resonance frequency could be adjusted in a large-range from 10 kHz to 400 kHz. Transmitting coil and driving circuit were presented according to the requirement of wireless power transmission. The experiments validated the feasibility of the design and it had a good performance in application.