mirage

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

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

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

Show full item record

Title: Utilization of full spectrum space in single-sensor-based optical dynamic measurement
Author: Fu, Yu; Guo, Min; Phua, Poh Boon
Copyright year: 2010
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.
Subject: DRNTU::Science::Physics::Optics and light
Type: Conference Paper
Conference name: International Symposium on Optomechatronic Technologies (2010 : Toronto, Canada)
Research Centre: Temasek Laboratories
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.
Version: Published version

Files in this item

Files Size Format View Description
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
   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record

Statistics

Total views

All Items Views
Utilization of full spectrum space in single-sensor-based optical dynamic measurement 788

Total downloads

All Bitstreams Views
Utilization of full spectrum space in single-sensor-based optical dynamic measurement.pdf 383

Top country downloads

Country Code Views
Singapore 176
United States of America 94
China 49
Russian Federation 19
Taiwan 5

Top city downloads

city Views
Singapore 175
Mountain View 68
Beijing 24
Redwood City 5
Taichung 5