NDLI: Optical vortex and correlation image sensor for networked deformation sensing of infrastructures

Content Provider	IEEE Xplore Digital Library
Author	Sato, S. Toru Kurihara Shigeru Ando Fujimoto, I.
Copyright Year	2008
Description	Author affiliation: Grad. Sch. of Inf. Sci. & Technol., Univ. of Tokyo, Tokyo (Sato, S.; Toru Kurihara; Shigeru Ando)
Abstract	This paper outlines a new research project (CREST) for structure health monitoring. The purpose is to develop a networked sensor for static, full-axis deformation of large and long structures such as bridges, roads, and railways. We propose a novel technique based on the combined use of an optical vortex (OV) beam and correlation image sensors (CIS). Since the beam profile of OV involves definitive features known as zeros or phase singularities and they are invariant through propagation, we can encode and transmit information to determine geometrical relations between the sender and receiver nodes. By demodulating an amplitude and phase profile of OV using the CIS, all (three lateral and three rotational) displacement components can be determined. The basic optical setup is presented and the results of the fundamental experiments are shown.
Starting Page	39
Ending Page	42
File Size	611621
Page Count	4
File Format	PDF
ISBN	9784907764319
DOI	10.1109/INSS.2008.4610894
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-17
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	SICE (The Society of Instrument and Control Engineers)
Subject Keyword	correlation image sensor structure health monitoring Optical vortices Measurement by laser beam displacement measurement Displacement measurement optical vortex beam Optical imaging Laser beams Optical sensors Optical beams
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Use of retroreflector and multi-zeros optical beam for remote monitoring of lateral deformation

Remote full-axis deformation sensing with optical vortex beam for health monitoring of infrastructures

Remote full-axis deformation sensing using multi-zeros optical beam: Interference of two multi-zeros beam

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