Interface electronics for an RF resonance-based displacement sensor

7th Sensors & their Applications

Asua, E.^1 ; Etxebarria, V.^1 ; García-Arribas, A.^1 ; Feutchwanger, J.^1 ; Portilla, J.^1 ; Lucas, J.^2

Departamento de Electricidad y Electrónica, Universidad Del País Vasco (UPV/EHU), Apartado 644, 48080 Bilbao, Spain^1

Elytt Energy, 28046 Madrid, Spain^2

关键词: Cost-effective solutions;    Discrete elements;    Displacement sensor;    Displacement transducer;    Electronic interface;    Interface electronics;    Positioning accuracy;    Resonance frequencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012017/pdf
DOI  :  10.1088/1742-6596/450/1/012017

来源: IOP

【 摘 要 】

We propose, design, and test an electronic interface for a new standalone, affordable and compact displacement transducer based on resonant cavities. The operation of the interface establishes a self-resonance in the cavities and detects the resonance frequency (which is directly related to the position to be measured) by analyzing the attenuation produced by a low pass filter. The results obtained in a first prototype of the interface built with discrete elements show that the obtainable positioning accuracy using this cost-effective solution is about 5 micrometers.