High-precision displacement sensor based on resonant cavities through an electronic interface based on Arduino

被引：9

作者：

Asua, E. ^{[1
]}

Etxebarria, V. ^{[1
]}

Feutchwanger, J. ^{[1
]}

Portilla, J. ^{[1
]}

机构：

[1] Univ Basque Country, UPV EHU, Dept Elect & Elect, Leioa 48940, Spain

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2019年 / 295卷

关键词：

Micro- and nano-positioning sensor; Resonant cavities; Resonant frequency detector;

D O I：

10.1016/j.sna.2019.05.030

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel stand-alone, high-precision, compact and cost-effective positioning sensor based on resonant cavities is described. It consists of two parts: the transducer based on radio frequency resonant cavities; and an electronic system that uses a voltage-controlled oscillator (VCO), a mixer as phase detector, and an Arduino interface to find the voltage through which the VCO operates the transducer. The resonant frequency of the device is directly related to a voltage null in the mixer output signal, in such a way that its measurement allows to deduce the correct driving signal value. This value represents the complete system displacement. Experimental tests have proven the effectiveness of the presented system in proposed displacement measurement tests performed in the range of micrometers. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：296 / 301

页数：6

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