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Automatic Noncontact Quality Inspection System for Industrial Parabolic Trough Assembly

Pottler, Klaus and Röger, Marc and Lüpfert, Eckhard and Schiel, Wolfgang (2008) Automatic Noncontact Quality Inspection System for Industrial Parabolic Trough Assembly. Journal of Solar Energy Engineering, 130 (1), 011008-1-011008-5.

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The construction of solar thermal power plants with several thousand m<sup>2</sup> of collector area requires quality control measures for components, subsystems, and the entire collector rows. While quality control has a significant potential to increase the solar field efficiency, the main objective is to assure high-quality standards for the whole solar field. Quality control, assembly documentation and performance measurements are required by the investors. Based on previous R&D work in collector development and prototype qualification, measurement systems have been developed for use in solar field construction and operation supervision. In particular, close-range photogrammetry can be used to measure the geometry of collector steel structures. The measurement system consists of a digital camera, which moves around the structure automatically while shooting photos of the concentrator structure from various positions. The photos are evaluated with photogrammetry software to check the assembly quality. The whole measurement and evaluation procedure is computer controlled and is fast enough to be integrated in a solar collector production line. This paper deals with the required measurement accuracy and shows ways to reach, maintain, and control this accuracy in the rough environment of an on-site production line.

Document Type:Article
Title:Automatic Noncontact Quality Inspection System for Industrial Parabolic Trough Assembly
AuthorsInstitution or Email of Authors
Lüpfert, EckhardUNSPECIFIED
Schiel, WolfgangSBP GmbH
Date:February 2008
Journal or Publication Title:Journal of Solar Energy Engineering
Page Range:011008-1-011008-5
Keywords:parabolic trough, solar field, quality control, photogrammetry, surveying
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Qualifizierung (old)
Location: other
Institutes and Institutions:Institute of Technical Thermodynamics > Solar Research
Deposited By: Dr.rer.nat. Klaus Pottler
Deposited On:11 Jan 2008
Last Modified:12 Dec 2013 20:29

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