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Volume 26 - ICOP & ICPET 2020
ICOP & ICPET _ INPC _ ICOFS 2020, 26 - ICOP & ICPET 2020: 965-968 |
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Saneinejad V, Rezaei F, Barati sedeh A, Gourani P. Construction of laser Doppler vibrometer and velocimeter device. ICOP & ICPET _ INPC _ ICOFS 2020; 26 :965-968
URL: http://opsi.ir/article-1-1984-en.html
URL: http://opsi.ir/article-1-1984-en.html
1- Tehran, Shariati, Physics Faculty, Khajeh Nasir Toosi University of Technology
2- Tehran, Evin, Laser and Plasma Research Institute, Shahid Beheshti University.
2- Tehran, Evin, Laser and Plasma Research Institute, Shahid Beheshti University.
Abstract: (1524 Views)
In this paper, construction of laser Doppler vibrometer device is studied. Michelson interferometer has been used to divide the laser beam into two reference and measurement arms. The used set-up in this experiment is from kind of hemodyne group. The results indicate an acceptable consistency between the results of the measurement of device with identified frequency given to device which shows the high accuracy of the device in the measurements. Furthermore, by suitable signal processing and omitting all of optical, electrical and background noises, the frequency of vibrating object can be extracted with discrimination of the signal from noise.
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