A closed loop wireless power transmission system using a commercial RFID transceiver for biomedical applications.
A closed loop wireless power transmission system using a commercial RFID transceiver for biomedical applications.
复制标题
闭环无线电力传输系统，使用商用 RFID 收发器，用于生物医学应用。
DOI：
10.1109/iembs.2009.5332564
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Ghovanloo,Maysam
中科院分区：
文献类型：
--
作者：
Kiani,Mehdi;Ghovanloo,Maysam
本文介绍了一种独立的闭环无线电力传输系统，该系统围绕一款商用现货（COTS）射频识别（RFID）收发器（MLX90121）构建，工作频率为13.56 MHz。它可用于以闭环方式为可植入生物医学设备感应供电。近场无线电力传输中的发射器线圈和接收器线圈之间的距离和未对准的任何变化都可能导致接收到的电力的显著变化，这可能导致故障或过度散热。RFID收发器通常使用开环。然而，其反向遥测能力可用于稳定植入物上的接收电压。我们的测量结果表明，在6至12 cm的范围内，发送到应答器的功率保持在1.48 mW，而发射机的功耗从0.3 W变化到1.21 W。闭环系统还可以对抗由于负载电流的突然变化而引起的电压变化。
This paper presents a standalone closed loop wireless power transmission system that is built around a commercial off-the-shelf (COTS) radio frequency identification (RFID) transceiver (MLX90121) operating at 13.56 MHz. It can be used for inductively powering implantable biomedical devices in a closed loop fashion. Any changes in the distance and misalignment between transmitter and receiver coils in near-field wireless power transmission can cause a significant change in the received power, which can cause either malfunction or excessive heat dissipation. RFID transceivers are often used open loop. However, their back telemetry capability can be utilized to stabilize the received voltage on the implant. Our measurements showed that the delivered power to the transponder was maintained at 1.48 mW over a range of 6 to 12 cm, while the transmitter power consumption changed from 0.3 W to 1.21 W. The closed loop system can also oppose voltage variations as a result of sudden changes in load current.