| 无线无源LC谐振式位移传感技术研究 |
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| 引用本文： | 魏坦勇,谭秋林,罗涛,熊继军.无线无源LC谐振式位移传感技术研究[J].科学技术与工程,2014,14(35). |
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| 作者姓名： | 魏坦勇 谭秋林 罗涛 熊继军 |
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| 作者单位： | 1. 电子测试技术重点实验室;中北大学仪器科学与动态测试教育部重点实验室,太原030051
2. 电子测试技术重点实验室;中北大学仪器科学与动态测试教育部重点实验室,太原030051;重庆大学新型微纳器件与系统技术国家重点学科实验室,重庆400044 |
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| 基金项目： | 高等学校优秀青年学术带头人支持计划资助项目 |
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| 摘 要： | 对无线无源LC谐振式位移传感技术进行了研究,运动的介质进入电容极板使电容量发生改变,进而使LC谐振频率发生改变,通过谐振频率值来推测介质进入电容极板的位移,通过制作PCB位移传感模型并对该模型进行天线无源扫频信号测试,测试结果表明LC谐振频率随着介质位移的增加而单调减小,而且在介质10 mm的位移量内,传感器谐振频率发生了17.5 MHz的变化。实验中由于电容边缘效应和电感寄生电容的影响,测试值与理论推导值有一定的偏差。
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| 关 键 词： | 无线无源LC传感器 位移 谐振频率 边缘效应 |
| 收稿时间： | 2014/7/11 0:00:00 |
| 修稿时间： | 2014/8/18 0:00:00 |
Research On Wireless Passive LC Resonant Displacement Sensing Technology |
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| weitanyong,and.Research On Wireless Passive LC Resonant Displacement Sensing Technology[J].Science Technology and Engineering,2014,14(35). |
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| Authors: | weitanyong and |
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| Abstract: | In this paper, the wireless passive LC resonant displacement sensing technology has been studied. The medium moving into the capacitor plates changes the capacitance, and thus changes the resonance frequency of the LC. The displacement of the medium into the capacitor plates can be inferred by the resonance frequency. A PCB displacement sensor model is made and tested on wireless passive sweep frequency signal by antenna, and the test results show that the LC resonant frequency decreases monotonously with the increase of the displacement of the medium, moreover among the 10mm displacement of the medium, the resonant frequency of the sensor changes totally 17.5MHz. There is a certain deviation between the value of the measured and the theoretical derivation because of the effect of the capacitive edge effects and the parasitic capacitance of the Inductance in the experiment |
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| Keywords: | wireless passive LC sensor displacement Resonance frequency edge effect |
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