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Proceedings Paper

Synchronous high speed multi-point velocity profile measurement by heterodyne interferometry
Author(s): Xueqin Hou; Wen Xiao; Zonghui Chen; Xiaodong Qin; Feng Pan
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Paper Abstract

This paper presents a synchronous multipoint velocity profile measurement system, which acquires the vibration velocities as well as images of vibrating objects by combining optical heterodyne interferometry and a high-speed CMOS-DVR camera. The high-speed CMOS-DVR camera records a sequence of images of the vibrating object. Then, by extracting and processing multiple pixels at the same time, a digital demodulation technique is implemented to simultaneously acquire the vibrating velocity of the target from the recorded sequences of images. This method is validated with an experiment. A piezoelectric ceramic plate with standard vibration characteristics is used as the vibrating target, which is driven by a standard sinusoidal signal.

Paper Details

Date Published: 10 February 2017
PDF: 6 pages
Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102500N (10 February 2017); doi: 10.1117/12.2267051
Show Author Affiliations
Xueqin Hou, BeiHang Univ. (China)
Wen Xiao, BeiHang Univ. (China)
Zonghui Chen, BeiHang Univ. (China)
Xiaodong Qin, BeiHang Univ. (China)
Feng Pan, BeiHang Univ. (China)


Published in SPIE Proceedings Vol. 10250:
International Conference on Optical and Photonics Engineering (icOPEN 2016)
Anand Krishna Asundi; Xiyan Huang; Yi Xie, Editor(s)

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