Automatic volume inspection for glass blow moulds

In the glass bottle mould making industry, volume control is done by measuring the amount of water needed to fill the mould. This process has several issues. Firstly, it requires a trained operator to properly seal the mould. Secondly, different operators will lead to different volume values. Another issue is related to the time and work necessary for the procedure, which can take up to 20 minutes for a single mould, making it unsuitable to inspect several moulds of the same series. These issues can be solved by automating the procedure. By using reverse engineering systems to obtain the internal cavity surfaces, comparative studies can be done, such as wear study, enabling the optimization of the moulds. The goal of this project is to establish a system to automate the inspection of the moulds which will result in the acquisition of the moulding surfaces. Then, the volume of the moulds and surface deviations in specific areas can be measured. The development of this project focused in two main areas: the development of a script, where the volume is calculated and the surface is inspected, from cloud points, to determine if the mould is in an acceptable state; and the study of technologies capable of acquiring the mould’s surface while simultaneously being automatable. As for this study, several case studies using laser and structured light are performed to understand the abilities and limitations of these technologies. The first study was done using polished cast iron moulds to determine the ability to acquire the surface and obtain the volume. Then, the ability to present proper comparative results is explored by using a set of unpolished cast iron moulds and then these same moulds once polished to verify if the used systems can obtain the deviations between the two situations. Finally, the validation of the technologies was done using a demo bronze mould, where surface deviations were inspected as well as a ring gauge where the inner cylinder was used for inspection. From these cases, the used laser scanner was able to obtain the volumes of the moulds as well as proper comparative results without spray. As for the used structured light system, it proved unable to acquire the surfaces of the moulds and of the ring gauge, requiring spray. Despite this performance, the system is quite automatable and a state-of-the-art structured light system, using blue light, could be used for this purpose. The laser is also a viable solution, but the cost and complexity to automate can be higher than the structured light system

Deflektometrie zur automatischen Sichtprüfung und Rekonstruktion spiegelnder Oberflächen

Die Deflektometrie liefert Gestaltinformationen über spiegelnde Oberflächen durch Beobachtung von a priori bekannten Mustern. Zur automatischen Sichtprüfung von (teil)spiegelnden Objekten werden das Konzept der inversen Muster sowie Strategien zur Auswertung der deflektometrischen Registrierung präsentiert. Zur Rekonstruktion spiegelnder Flächen wird ein neuartiger Algorithmus dargelegt. Große, komplex geformte spiegelnde Objekte können mit den dargelegten Methoden geprüft und vermessen werden

Deflektometrie zur automatischen Sichtprüfung und Rekonstruktion spiegelnder Oberflächen

Die Inspektion Spiegelnder Oberflächen unterscheidet sich von der Prüfung diffuser Flächen, da die Objekte nur aufgrund ihrer Spiegelbilder einem Beobachter zugänglich sind. Zur qualitativen Inspektion werden Strategien zur Auswertung von Spiegelbildserien präsentiert. Zur Flächenrekonstruktion wird ein neuartiger Algorithmus vorgeschlagen. Große, komplex geformte spiegelnde Objekte können mit den dargelegten Methoden geprüft und rekonstruiert werden

Contemporary Robotics

This book book is a collection of 18 chapters written by internationally recognized experts and well-known professionals of the field. Chapters contribute to diverse facets of contemporary robotics and autonomous systems. The volume is organized in four thematic parts according to the main subjects, regarding the recent advances in the contemporary robotics. The first thematic topics of the book are devoted to the theoretical issues. This includes development of algorithms for automatic trajectory generation using redudancy resolution scheme, intelligent algorithms for robotic grasping, modelling approach for reactive mode handling of flexible manufacturing and design of an advanced controller for robot manipulators. The second part of the book deals with different aspects of robot calibration and sensing. This includes a geometric and treshold calibration of a multiple robotic line-vision system, robot-based inline 2D/3D quality monitoring using picture-giving and laser triangulation, and a study on prospective polymer composite materials for flexible tactile sensors. The third part addresses issues of mobile robots and multi-agent systems, including SLAM of mobile robots based on fusion of odometry and visual data, configuration of a localization system by a team of mobile robots, development of generic real-time motion controller for differential mobile robots, control of fuel cells of mobile robots, modelling of omni-directional wheeled-based robots, building of hunter- hybrid tracking environment, as well as design of a cooperative control in distributed population-based multi-agent approach. The fourth part presents recent approaches and results in humanoid and bioinspirative robotics. It deals with design of adaptive control of anthropomorphic biped gait, building of dynamic-based simulation for humanoid robot walking, building controller for perceptual motor control dynamics of humans and biomimetic approach to control mechatronic structure using smart materials

Forum Bildverarbeitung

Bildverarbeitung spielt in vielen Bereichen der Technik zur schnellen und berührungslosen Datenerfassung eine Schlüsselrolle und hat sich in unterschiedlichen Anwendungen einen unverzichtbaren Platz erobert. Von besonderer Bedeutung ist dabei eine zielführende Verarbeitung der erfassten Bildsignale. Das "Forum Bildverarbeitung" greift diese hochaktuelle Entwicklung sowohl hinsichtlich der theoretischen Grundlagen, Beschreibungsansätze und Werkzeuge als auch relevanter Anwendungen auf