생체 내 로봇 캡슐을 위한 전력 수신기의 송신기로부터의 상대위치 확인 방법 연구
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This paper presents an estimation method of the relative location of the power-receiver from the transmitter for in vivo robot capsuled. The proposed method utilizes the fact that the needed current for driving the power transmitter is increased when the receiver is inductively coupled with the transmitter coil. By investigating the current increase characteristic according to the relative locations of the receiver, it was feasible whether the receiver is inside the reachable area of the transmitter coil or not. Two adjacent antennas were also tested to prove that the direction of the receiver's movement can be determined. The experimental results showed that the driving current of the transmission antenna was decreased distinctly when the receiver approach the edge where the neighboring antenna was turnsd on.