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为了克服无线内窥镜胶囊在消化道内姿态不确定引起的方向性问题,提高无线内窥镜中电磁感应连接的能量传输效率,该文提出对电磁感应连接的磁场进行三维分解,采用三维线圈分别接收,并进行整流合成输出;分析整流合成输入波形的特性,以及输入波形随胶囊与发射之间空间位置关系变化的特点,设计复合整流合成电路。研究表明:该波形合成电路有助于克服方向性的限制,避免通信中的盲点,并且输出效率比单向接收时提高41.4%。
In order to overcome the directionality problem caused by the uncertain posture of the wireless endoscope capsule in the digestive tract and improve the energy transmission efficiency of the electromagnetic induction connection in the wireless endoscope, a three-dimensional decomposition of the magnetic field of the electromagnetic induction connection is proposed. Three-dimensional coils Receive and rectify and synthesize the output; analyze the characteristics of the rectified and synthesized input waveform, and design the compound rectifying and synthesizing circuit according to the characteristics that the input waveform changes with the space position between the capsule and the transmitting. The results show that the waveform synthesis circuit can overcome the limitation of directivity, avoid the blind spots in communication, and improve the output efficiency by 41.4% compared with unidirectional receiver.