A six-port interferometer based micrometer-accuracy displacement and vibration measurement radar

Displacement detection and vibration measurements are important requirements for automation and mechanical stress diagnosis in diverse industrial environments. Laser interferometry is a widely used technique for these kinds of measurements since it features high-resolution, wide dynamic range and wi...

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Bibliographic Details
Published in2012 IEEE/MTT-S International Microwave Symposium Digest pp. 1 - 3
Main Authors Barbon, Francesco, Vinci, Gabor, Lindner, Stefan, Weigel, Robert, Koelpin, Alexander
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2012
Subjects
Adaptive optics
Calibration
Interferometer
Laser radar
Optical interferometry
Optical sensors
Phase Measurement
Positioning
Radar
Six-Port
Vibration measurement
Vibrations
Vibrometer
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Summary:Displacement detection and vibration measurements are important requirements for automation and mechanical stress diagnosis in diverse industrial environments. Laser interferometry is a widely used technique for these kinds of measurements since it features high-resolution, wide dynamic range and wide frequency response. Another advantage of the laser interferometry technique is contactless diagnosis/sensing which allows remote operations. However this technique is not suitable in harsh environments for instance with the presence of dust or fog which occur in several industrial production sites. In this paper a new contactless radar based vibration measurement technique is presented. It features an RF frontend based on a passive six-port interferometer working at 24 GHz. A dedicated signal processing unit is also presented. The proposed hardware allows to measure with a position accuracy of 0.5 µm.
ISBN:1467310859
9781467310857
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2012.6259624