Measurement of Membrane Displacement with a Motionless Camera Equipped with a Fixed Focus Lens

• Autorzy: Murawski K.

Identyfikatory

DOI

10.1515/mms-2015-0011

• Języki publikacji: EN

Abstrakty

EN

The paper presents a technique for measuring membrane displacements with one motionless camera. The method consists in measuring the distance to an object based on one image obtained from a motionless camera with a fixed-focus lens. The essence of the proposed measurement technique is to determine changes of the distance between a membrane and a video camera based on analysis of changes in the focus view of a marker placed on the membrane plane. It is proven that the used technique allows to monitor the frequency and amplitude of the membrane vibration. The tests were performed for the oscillation frequency in the range from 0.5 Hz to 6 Hz and deviations from the neutral position in the range of ±3 mm.

Słowa kluczowe

EN

measurement based on fuzzy signal; diaphragm displacement; image processing; motion sensor

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2015
• Tom: Vol. 22, nr 1
• Strony: 69--78
• Opis fizyczny: Bibliogr. 23 poz., fot., rys., wyk., wzory

Twórcy

autor

Murawski K.

• Military University of Technology, Institute of Teleinformatics and Automatics, Kaliskiego Str. 2, 00-908 Warsaw, Poland

Bibliografia

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Uwagi

EN

The work was presented at the 8th Conference Integrated Optics - Sensors, Sensing Structures and Methods, IOS'2014 sponsored by Polish Academy of Sciences. The conference was organized by the Committee of Electronics and Telecommunication at Polish Academy of Sciences in cooperation with the Upper Silesian Division of the Polish Acoustical Society and Photonic Society of Poland, as well as the Department of Optoelectronics at Silesian University of Technology.