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Utilization of full spectrum space in single-sensor-based optical dynamic measurement

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Utilization of full spectrum space in single-sensor-based optical dynamic measurement

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dc.contributor.author Fu, Yu
dc.contributor.author Guo, Min
dc.contributor.author Phua, Poh Boon
dc.date.accessioned 2011-02-18T06:46:27Z
dc.date.available 2011-02-18T06:46:27Z
dc.date.copyright 2010
dc.date.issued 2011-02-18T06:46:27Z
dc.identifier.citation Fu, Y., Guo, M., & Phua, P. B. (2010). Utilization of full spectrum space in single-sensor-based optical dynamic measurement. International Symposium on Optomechatronic Technologies, (pp.1-6)
dc.identifier.uri http://hdl.handle.net/10220/6720
dc.description.abstract In recent years, interferometry-based dynamic measurement has been widely used in industrial area for noncontact measurement of vibration or continuous deformation. In dynamic measurement, the traditional phase extraction method, phase shifting technique, is not easily accomplished with either high-speed camera or single-pixel photo detector. Hence spectrum analysis becomes a predominant method to extract transient phases. Due to the development of high-speed cameras and photo detectors, now it is possible to encode different information at separated positions in spectrum. In this paper, we will present two applications on fully utilizing spectrum space in dynamic measurement. One is a dual-wavelength image-plane digital holography using high-speed camera, and another is a spatially encoded multi-beam laser Doppler vibrometry using a single detector. The former experiment encodes information of two wavelengths at different parts of the spectrum. Two phase maps can be retrieved from one hologram. These two phase maps can generate a new phase distribution with an equivalent wavelength, so that the capturing rate of the camera can be reduced dramatically. The latter application encodes vibration information of different points on separated frequency ranges. The experiment verifies it is possible to do a precise vibration measurement on a 2×5 matrix simultaneously using a single photo detector. These results show with fully utilization of spectrum space, the capability of optical dynamic measurement will be tremendously improved.
dc.format.extent 6 p.
dc.language.iso en
dc.rights ©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
dc.subject DRNTU::Science::Physics::Optics and light
dc.title Utilization of full spectrum space in single-sensor-based optical dynamic measurement
dc.type Conference Paper
dc.contributor.conference International Symposium on Optomechatronic Technologies (2010 : Toronto, Canada)
dc.contributor.research Temasek Laboratories
dc.identifier.doi http://dx.doi.org/10.1109/ISOT.2010.5687349
dc.description.version Published version

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Utilization of ... al dynamic measurement.pdf 1.211Mb PDF View/Open This paper won The Best Paper Award on the ISOT2010 conference in Toronto, Canada, Oct. 25-27, 2010

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