- Tytuł:
- Measurement of Membrane Displacement with a Motionless Camera Equipped with a Fixed Focus Lens
- Autorzy:
- Murawski, K.
- Powiązania:
- https://bibliotekanauki.pl/articles/221372.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
measurement based on fuzzy signal
diaphragm displacement
image processing
motion sensor - Opis:
- 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.
- Źródło:
-
Metrology and Measurement Systems; 2015, 22, 1; 69-78
0860-8229 - Pojawia się w:
- Metrology and Measurement Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł