Testing, repair and overhaul of long-living printed circuit boards (PCBs) is a laborious task if no schematics or layout plans are available. Existing Reverse Engineering (RE) methods are time-consuming, error-prone, and destructive and require reference samples which makes them not feasible for non-OEM users of electronic devices. The Fraunhofer Institute for Production Systems and Design Technology (IPK) in Berlin and the Technical University Berlin have defined a new process for automated and non-destructive schematic and layout reconstruction based on electrical and optical measuring techniques. Current results and innovative approaches using computer vision analysis for recognition of PCB structure aiming to build error-free net lists through a net list merging algorithm are depicted in this paper.
Kurzfassung
Elektronikkomponenten werden im Luftund Schienenverkehr oft durch die Anwender selbst oder durch speziell qualifizierte MRO-Dienstleister (Maintenance, Repair and Overhaul) instand gehalten. In der Regel stehen jedoch nicht alle Unterlagen der Hersteller zur Verfügung, sodass die Fehlersuche für Reparaturaufgaben sehr aufwendig wird. Das Fraunhofer IPK hat eine Prozesskette zur schnellen Generierung von Stromlaufplänen, Bestückungsplänen und Stücklisten entwickelt und ausgewählte Prozessschritte prototypisch umgesetzt.
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