A New Readout System for LC Resonant Sensors

被引：1

作者：

Ge, Binger ^{[1
]}

Liang, Ting ^{[1
]}

Hong, Yingping ^{[1
]}

Li, Chen ^{[1
]}

Wang, Wei ^{[1
]}

Xiong, Jijun ^{[1
]}

机构：

[1] North Univ China, Key Lab Instrumentat Sci & Dynam Measurement, Minist Educ, Taiyuan, Shanxi Province, Peoples R China

来源：

MICRO-NANO TECHNOLOGY XV | 2014年 / 609-610卷

关键词：

LC resonant sensor; resonance detection; inductive coupling; planar spiral inductor; INTRAOCULAR-PRESSURE SENSOR; BACTERIA GROWTH; CIRCUIT SENSOR; WIRELESS; CAPACITOR;

D O I：

10.4028/www.scientific.net/KEM.609-610.957

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new readout system based on LC resonant sensor is presented. The readout system consists of a reader coil inductively coupled to the LC resonant sensor, a measurement unit, and a PC post processing unit. The measurement unit generates an output voltage representing the sensor resonance, converts the output voltage to numerical form, and saves the converted digital data. The PC post processing unit processes the digital data and calculates the sensor's resonance frequency. The readout system enables wireless interrogation and its accuracy is exemplified by an experimental system. The experimental system can detect the resonant frequency of sensor automatically and effectively. The experimental results are presented for different sensor resonance frequencies with various sensor capacitance values and show good agreement with the theoretical results. The entire design is simple, easy to use, and widely applicable for applications where the coupling distance between sensor and reader coil is variable.

引用

页码：957 / 963

页数：7

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