Adaptive RFID Impedance Matching Based on Phase Difference for Oil Well Applications

Adaptive RFID Impedance Matching Based on Phase Difference for Oil Well Applications
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油井应用中基于相位差的自适应 RFID 阻抗匹配

DOI:
10.1109/tcsii.2016.2594236
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发表时间:
2017-05
期刊:
IEEE Transactions on Circuits and Systems II: Express Briefs
影响因子:
--
通讯作者:
Zhouping Yin
Zhouping Yin
中科院分区:
其他
文献类型:
--
作者:
Jixuan Zhu;Bo Tao;Zhouping Yin

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井下各种环境问题导致的严重阻抗失配问题会极大地降低射频识别(RFID)控制系统的可靠性。本文提出了一种新的用于油井的自适应RFID阻抗匹配系统,该系统利用测量的实时相位差来跟踪阻抗失配信息,同时使用可变电容阵列和扫频相结合的方法来对失配阻抗进行再匹配。实验结果表明,在受到各种环境影响的情况下,阻抗可以完全匹配。
Severe impedance mismatch problems due to the various environmental issues in downhole can greatly degrade the reliability of the radio-frequency identification (RFID) control system. In this brief, a new adaptive RFID impedance-matching system for oil well applications is presented, in which the measured real-time phase difference is employed to track the impedance mismatch information, while a variable capacitor array combined with a frequency sweep is used to rematch the mismatched impedance. Experiments have been performed and the results show that the impedance can be rematched perfectly when affected by from the various environmental influences.
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