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Spatially constrained scanning scheme applied for gap measurements

Spatially constrained scanning scheme applied for gap measurements Purpose – The purpose of this paper is to investigate an optical‐based scanning modality for the real‐time measurements of automotive interior gaps. Design/methodology/approach – The hardware is based on a charge‐coupled device detector acquiring a laser illumination. The laser is projected on multitude of substrates with different reflectivities and surface profiles; while the scanning is progressed manually through a hand‐held setup. Findings – The proposed software identifies the optical gap location automatically and establishes a dynamic field of view. Research limitations/implications – The study conducts a tool reliability and repeatability study that yield an accuracy of 0.08 mm and a repeatability of less than 6.5 percent as user bias. The developed hardware/software combination, when compared with two commercial systems; a 3D scanner and an industrially packaged sensor unit used for exterior gaps, which provided repeatability values of 24 and 17 percent, respectively, with accuracies of 1.5 and 0.34 mm. Originality/value – New hardware and software are developed in combination to operate effectively on different deco finish and gap separations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sensor Review Emerald Publishing

Spatially constrained scanning scheme applied for gap measurements

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Publisher
Emerald Publishing
Copyright
Copyright © 2011 Emerald Group Publishing Limited. All rights reserved.
ISSN
0260-2288
DOI
10.1108/02602281111140010
Publisher site
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Abstract

Purpose – The purpose of this paper is to investigate an optical‐based scanning modality for the real‐time measurements of automotive interior gaps. Design/methodology/approach – The hardware is based on a charge‐coupled device detector acquiring a laser illumination. The laser is projected on multitude of substrates with different reflectivities and surface profiles; while the scanning is progressed manually through a hand‐held setup. Findings – The proposed software identifies the optical gap location automatically and establishes a dynamic field of view. Research limitations/implications – The study conducts a tool reliability and repeatability study that yield an accuracy of 0.08 mm and a repeatability of less than 6.5 percent as user bias. The developed hardware/software combination, when compared with two commercial systems; a 3D scanner and an industrially packaged sensor unit used for exterior gaps, which provided repeatability values of 24 and 17 percent, respectively, with accuracies of 1.5 and 0.34 mm. Originality/value – New hardware and software are developed in combination to operate effectively on different deco finish and gap separations.

Journal

Sensor Review – Emerald Publishing

Published: Jun 28, 2011

Keywords: Automotive industry; Optical instruments; Lasers; Optical measurement; Inspection

References

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