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Farbstrukturen erkennen

Probleme bei laufender Produktion in der Holz verarbeitenden Industrie und Lösungsmöglichkeiten
: Plinke, B.

Holz- und Kunststoffverarbeitung : HK 36 (2001), Nr.12, S.59-61
ISSN: 0026-8615
ISSN: 0947-6237
ISSN: 0721-2585
Fraunhofer WKI ()
Möbel; Sensor; Datenerfassung; Klassifikationsverfahren; Fuzzy-Logik

Quality assurance in the wood products industry comprises tasks like the identification of different decors or the measurement of discolorations on decorated surfaces. These tasks do not rquire a complete surface scan but a high color sensitivity. Therefore camera sensors and image processing systems are often not suitable. As an alternative color sensors can be used which are integrated in a PC. module. The sonsor and a light source is connected to a measuring head positioned closey above the moving surface on a conveyor belt using a fibre optic bundle, and thus a line scan can be obtained. WKI developed a system capable to solve identification tasks (e.g. for floor products) with a low-cost sensor and a fuzzy-based computation method. Preliminary investigations show that discolorations on decorated board products (e.g. caused by temperature deviations in the press) can be detected using a similar set-up but using UV light and a spectroscopic sensor with a high resolution in the wavelength spectrum. Due to very different tasks in the industry initial studies are recommended befor an application is designed.