Qucosa: Hochschule für Technik und Wirtschaft Dresden
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124 research outputs found
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A Modular Development and Education Platform for Coordinate Measurement Solutions
No full textHigh-precision Coordinate-Measuring Machine (CMM) arms are essential tools in quality control, inspection, and maintenance across the mechanical engineering industry. However, the lack of a fully open-source framework poses a significant barrier for custom development and educational use. To address this gap, we present a comprehensive open-source reference implementation of a 5 Degrees of Freedom (DoF) CMM arm. The system is developed entirely with open-source tools, encompassing Personal Computer (PC) measuring software, Arduino-based firmware, custom-designed Printed Circuit Boards (PCBs), and a mechanical setup fabricated without reliance on proprietary components. Mechanical parts are modeled using implicit surface geometry defined in Python, facilitating version control, collaborative development, and project maintenance through standard software engineering workflows. The design emphasizes accessibility, with low-cost materials and tools, and prioritizes safety through Universal Serial Bus (USB) powered operation (5V) and integrated protection circuitry on all electrical interfaces. This Open Source Hardware (OSH) CMM offers a low-risk, low-barrier platform for the exploration, development, and education of CMM and their associated software ecosystems
GaN-FET-based PWM power stage and breakout board for single-phase electric drives as open source hardware
No full textA pulse-width-modulated power stage with current measurement was required for a highly dynamic force-compensated motion system with a projected acceleration of 100 m/s². As no suitable system was available on the market, an in-house solution was developed using the open-source EDA software KiCAD and made available to the scientific community as open-source hardware.
The design relies on commercial half-bridge evaluation boards with modern Gallium-Nitride transistors (LMG341x) from Texas Instruments. It includes motherboards with control logic and current measurement, as well as breakout boards for connection to the controller. Development aimed for switching frequencies of 100 kHz, with a nominal voltage of up to 100 V and 10 A RMS.
One main aspect was electromagnetic compatibility: communication between the breakout board and half-bridge-motherboard takes place via fibre optics, and the current measurement signal is transmitted as differential voltage. The breakout board can connect with any controller via 5 V TTL logic – in our case a rapid control prototyping system from dSPACE. In the paper, we present the objective, circuit design, validation, and potential of our system. Subsequently, we will discuss the errors made during development and demonstrate how to swap back mixed-up pins elegantly
Upscaling ocean observation with standardized modular Open Hardware - The Open Source Building Kit
No full textOcean observation urgently needs scalable, affordable solutions that increase spatial and temporal coverage, especially in coastal and data-poor regions. The study presents the Open Source Building Kit (OSBK), developed within the SOOP innovation platform, as a modular open-hardware–software framework to simplify deployment, integration, and community uptake of marine sensors. The paper evaluates OSBK against DIN SPEC 3105, the first officially accredited Open Hardware standard in Germany, to assess practical suitability for research and citizen science contexts. A sequential mixed-methods design is applied: (i) a semi-structured expert interview to elicit goals, challenges and perceived gaps in standardization; (ii) a requirements analysis mapping OSBK documentation criteria according to DIN SPEC 3105; and (iii) developer feedback via structured questionnaire aligned with those criteria. Findings indicate that DIN SPEC 3105 broadly matches real-world documentation needs and fosters reproducibility and long-term maintainability, but entry barriers persist: fragmented guidance, ambiguities in required detail, limited coverage of modular systems and uneven linkage between hardware and software artifacts. Proposed are actionable improvements – concise checklists and examples, clearer definitions, accommodation of modular architectures, and stronger hardware–software harmonization. Summarized, standardized Open Hardware can lower costs and expand participation, ultimately strengthening marine observing capacity
Low-Cost Open-Source Spectral Data-Based Color Detection Board for Soil and Mineral Classification
No full textThis paper presents an open-source hardware (OSH) solution for spectral color detection targeting soil classification and mineral identification. Traditional methods for these tasks, such as visual comparison with Munsell soil color charts, are highly subjective and prone to human error, while laboratory-grade spectrometers are cost-prohibitive for widespread field deployment. Although recent commercial portable sensors like the Nix Pro have improved in field analysis, their high cost (approximately 100. Key innovations include: (1) hybrid classification algorithms combining RGB, IR (850nm/940nm), and temporal parameters achieving 95% accuracy; (2) signal settling time measurement as a novel indicator for material density; (3) modular design compatible with Arduino ecosystems. Validated on 120 soil/mineral samples, the board reduces costs by 70% compared to dedicated portable spectrophotometers like Nix Pro while maintaining laboratory-grade precision
2. Open Source Hardware Konferenz 2025
No full textAm 24. und 25. November 2025 lädt Chemnitz zur zweiten Open Source Hardware Konferenz ein. Die Veranstaltung bringt Fachleute aus Forschung, Industrie, offenen Werkstätten und der Maker-Community zusammen, um aktuelle Entwicklungen, Chancen und Herausforderungen im Bereich Open Source Hardware (OSH) zu diskutieren. Die Konferenz ist Teil des Projekts oSHOP – Open Source Hardware Innovation Platform, das vom Fraunhofer IWU gemeinsam mit der TU Dresden, der HTW Dresden und weiteren Partnern durchgeführt wird. Ziel des Projekts ist es, Open-Source-Prinzipien in die Entwicklung physischer Produkte zu übertragen und damit neue Wege für Innovation und Zusammenarbeit im Maschinen- und Anlagenbau zu eröffnen. Durch die Bereitstellung offener Baupläne, gemeinsamer Infrastrukturen und neuer Transferkonzepte soll ein Ökosystem entstehen, das Unternehmen, Forschungseinrichtungen und Maker vernetzt. Das Projekt wird im Rahmen der T!Raum-Initiative des Bundesministeriums für Bildung und Forschung gefördert
Open Source Video Processing Pipelines
No full textVideo processing pipelines are a huge topic; there are many cameras, protocols, processors and processes for video. When building a video pipeline, it is hard to know which Open Source pieces can be used, and which closed-source pieces have to be used. This article surveys the landscape, and recommends when to use what. Particular attention is paid to European and Open Source components, and to freely available protocols. Needed applications and hardware are identified. The article reviews: 1 Drone applications. 2 Other example applications. 3 Camera components. 4 Multi-camera systems. 5 Camera communication protocols. 6 24 image processing blocks. 7 Cameras. 8 Longer range protocols. 9 FPGAs supported by Yosys and Nextpnr. 10
FPGAs with MIPI. 11 European FPGAs. 12 Verilog and VHDL libraries. 13 Microcontrollers processing video. 14 Libmpix on Zephyr OS. 15 Protocol bridge chips
Development of an open-source hardware evaluation kit for smart vibration sensors
No full textThis paper presents the development and verification of the smart sensor evaluation kit, a compact low-cost desktop shaker as an open-source tool for testing smart vibration sensors. The system is based on consumer hardware including a Raspberry Pi, mini shaker, and touch display, integrated in a waterproof box and powered by a power bank. It enables controlled excitation as well as energy and latency measurement through a separate power profiler kit to evaluate multiple relevant properties of smart sensors. The integrated software allows for common vibration patterns like white noise, sine and sine sweep, as well as custom signals to reproduce recorded acceleration data for validating on-device classification algorithms on the end-hardware. The dynamic performance of the shaker system was characterized by experimental investigations using a laser vibrometer to determine the frequency response function, and the gain settings and effects of applied mass. This sensor evaluation platform closes the gap between hand excitation and commercial shakers, providing an practical and affordable tool for researchers, educators and developers. By enabling reliable sensor testing without costly equipment lowers the barrier for the development of smart sensors and accelerates implementation in intelligent condition monitoring systems
Systementwicklung auf der Basis einer dynamischen Wissensorganisation
Get PDFDie Wissensverarbeitung stellt langfristig gesehen eine der großen Herausforderungen an die Informatik dar. Ihre strategische Aufgabe ist es, ganze Teilgebiete menschlichen Alltags- oder Expertenwissens strukturell und bedeutungsmäßig zu formalisieren und der Problemlösung per Computer zugängig zu machen. Das vorliegende Buch widmet sich der informationstechnischen Seite dieses Prozesses aus praktischer und anwendungsorientierter Sicht, indem es anhand eigener beispielhafter Entwicklungsarbeiten zwei seiner entscheidenden Aspekte darstellt: die Integration unterschiedlicher Wissensrepräsentationen und -verarbeitungen sowie die Dynamik deren Entwicklung. Konzeptionell geht es dabei um das Zusammenspiel von fallbasierten und konzeptbasierten Technologien und deren Verbindung mit Lern- und Problemlösungsverfahren. Im Einzelnen werden folgende Themen behandelt:
- ein konzeptionelles Rahmenmodell für eine dynamische Wissensorganisation,
- ein Architekturvorschlag für dynamische wissensbasierte Systeme,
- ein generisches Entwicklungssystem, das die Architektur umsetzt, und
- zwei spezifische Anwendungssysteme in den Domänen Bauwesen und Verkehrswesen, die mit dem Entwicklungssystem erstellt wurden.:1. Einführung
2. Ausgangspunkt und Kontext
3. Wissensmodell
4. Architektur
5. Entwicklungssystem
6. Anwendungssysteme
7. Erfahrung und Wertung
8. SchlussbemerkungIn the long term, knowledge processing is one of the major challenges facing computer science. Its strategic task is to formalize entire sub-areas of human everyday or expert knowledge structurally and meaningfully and to make them accessible to problem solving by computer. This book is dedicated to the information technology side of this process from a practical and application-oriented point of view by presenting two of its decisive aspects on the basis of its own exemplary development work: the integration of different knowledge representations and processing as well as the dynamics of their development. Conceptually, it is about the interaction of case-based and concept-based technologies and their connection with learning and problem-solving methods. The following topics are dealt with in detail:
- a conceptual framework model for a dynamic knowledge organization,
- an architectural proposal for dynamic knowledge-based systems,
- a generic development system that implements the architecture, and
- two specific application systems in the domains of construction and transportation created with the development system.:1. Einführung
2. Ausgangspunkt und Kontext
3. Wissensmodell
4. Architektur
5. Entwicklungssystem
6. Anwendungssysteme
7. Erfahrung und Wertung
8. Schlussbemerkun
Proceedings of the 27th Bilateral Student Workshop HTW Dresden and CTU Prague – User Interfaces & Visualization
Get PDFThis technical report publishes the proceedings of the 27th Bilateral Student Workshop CTU Prague and HTW Dresden – User Interfaces & Visualization, which was held from 29th to 30th of November 2024. The workshop is traditionally organized by the Faculty of Computer Science/Mathematics and the Faculty of Electrical Engineering of the Czech Technical University in Prague. It offers young scientists in particular the opportunity to present and discuss their current research results. The workshop is open to undergraduate and PhD students from both universities. The main goal is to create a credible simulation of a process where results of scientific work are presented to an international audience. The German Academic Exchange Service offers its financial support to allow student participants the bilateral exchange between Prague and Dresden.:1) Barbora Koudelková: Gamification in Occupational Therapy: Automating the MABC-2 Motor Skill Evaluation, pp. 1–8
2) Hà Trang Phan: Enhancing Wearable Technology in Dementia Care: A Systematic Review of User Resistance and Design Innovations, pp. 9–15
3) Selina Natschke and Dietrich Kammer: Display and Gesture Calibration for Adaptive Spatial Augmented Reality in Smart Factories, pp. 16–22
4) Alexander Weise, Mathias Klingner, and Hans-Joachim Böhme: Incorporation of a Voice Assistance System in an Existing Ambient Assisted Living System for a More Holistic Approach, pp. 23–30
5) Hanna Hliavitskaya: Digital Representation of Building Interiors for Individuals with Vision Impairments, pp. 31–36
6) Martin Doležal: Effects of Navigation System Use on Spatial Memory and Spatial Learning, pp. 37–42
7) Jan Karhan, Anna Šebíková, and Josef Šafařík: Innovation in Design Education: A Personal Approach to Problem-Solving through Personas Elements, pp. 43–46
8) Anna Šebíková, Jan Karhan, and Josef Šafařík: Interpretative Phenomenological Analysis of the Approach of Design Students in Designing for Specific User Groups, pp. 47–52
9) Georg Eißner: Touch2Music – Development of an Instrument for Music Therapy, pp. 53–59
10) Jenny Portwich: Towards a User Interface for Railway Disposition Management:
Visualization Approaches and Challenges, pp. 60–66
11) Niklas Kothe: IDOIKON – Development of an Online Tool with Low-Threshold Tools for the Art-Historical Analysis and Documentation of Perspective Constructions in Pictures, pp. 67–73
12) Vojtěch Radakulan: Digital Twins in Contemporary Art Galleries, pp. 74–77
13) Adam Loucký: Organizing a Data Organizer, pp. 78–84
14) Florian Bender, Mathias Klingner, and Hans-Joachim Böhme: Use of Large Language Models for the Verbal Description of Motion Sequences, pp. 85–92Dieser Tagungsband veröffentlicht die Beiträge des 27. Bilateralen Studentenworkshops der CTU Prag und der HTW Dresden – User Interfaces & Visualization, der vom 29. bis 30. November 2024 stattfand. Der Workshop wird traditionell von der Fakultät für Informatik/Mathematik und der Fakultät für Elektrotechnik der Tschechischen Technischen Universität in Prag organisiert. Er bietet insbesondere jungen Wissenschaftlerinnen und Wissenschaftlern die Möglichkeit, ihre aktuellen Forschungsergebnisse zu präsentieren und zu diskutieren. Der Workshop steht sowohl Bachelor- als auch Promotionsstudierenden beider Hochschulen offen. Das Hauptziel ist es, eine glaubwürdige Simulation eines Prozesses zu schaffen, bei dem wissenschaftliche Ergebnisse einem internationalen Publikum präsentiert werden. Der Deutsche Akademische Austauschdienst unterstützt die Veranstaltung finanziell, um den bilateralen Austausch zwischen Prag und Dresden für studentische Teilnehmende zu ermöglichen.:1) Barbora Koudelková: Gamification in Occupational Therapy: Automating the MABC-2 Motor Skill Evaluation, pp. 1–8
2) Hà Trang Phan: Enhancing Wearable Technology in Dementia Care: A Systematic Review of User Resistance and Design Innovations, pp. 9–15
3) Selina Natschke and Dietrich Kammer: Display and Gesture Calibration for Adaptive Spatial Augmented Reality in Smart Factories, pp. 16–22
4) Alexander Weise, Mathias Klingner, and Hans-Joachim Böhme: Incorporation of a Voice Assistance System in an Existing Ambient Assisted Living System for a More Holistic Approach, pp. 23–30
5) Hanna Hliavitskaya: Digital Representation of Building Interiors for Individuals with Vision Impairments, pp. 31–36
6) Martin Doležal: Effects of Navigation System Use on Spatial Memory and Spatial Learning, pp. 37–42
7) Jan Karhan, Anna Šebíková, and Josef Šafařík: Innovation in Design Education: A Personal Approach to Problem-Solving through Personas Elements, pp. 43–46
8) Anna Šebíková, Jan Karhan, and Josef Šafařík: Interpretative Phenomenological Analysis of the Approach of Design Students in Designing for Specific User Groups, pp. 47–52
9) Georg Eißner: Touch2Music – Development of an Instrument for Music Therapy, pp. 53–59
10) Jenny Portwich: Towards a User Interface for Railway Disposition Management:
Visualization Approaches and Challenges, pp. 60–66
11) Niklas Kothe: IDOIKON – Development of an Online Tool with Low-Threshold Tools for the Art-Historical Analysis and Documentation of Perspective Constructions in Pictures, pp. 67–73
12) Vojtěch Radakulan: Digital Twins in Contemporary Art Galleries, pp. 74–77
13) Adam Loucký: Organizing a Data Organizer, pp. 78–84
14) Florian Bender, Mathias Klingner, and Hans-Joachim Böhme: Use of Large Language Models for the Verbal Description of Motion Sequences, pp. 85–9
Künstliche Intelligenz und Virtuelle Realität – ein konzeptioneller Rück-, Über- und Ausblick
No full textEs wird versucht, auf allgemein verständliche Art und Weise die in Lehre und Forschung seit Jahrzehnten etablierten Teilgebiete der Informatik, Künstliche Intelligenz und Virtuelle Realität, zusammenzuführen und sowohl in den informationstechnologischen als auch gesellschaftlichen Kontext einzuordnen. Dabei spannt sich der Bogen von den historischen Wurzeln über aktuelle Themenstellungen hin zu zukünftigen Chancen und Gefahren. Ziel ist es, die aus eigenen theoretischen und praktischen Arbeiten gewonnenen Einsichten, Erkenntnisse und Erfahrungen in kompakter Form wiederzugeben und die Leser bzw. Hörer zu eigenem Nachdenken über die Thematik in ihren Fach- und Arbeitsgebieten anzuregen.:1. Vorbemerkung
2. Einführung
3. Vergangenheit
4. Konzeption
5. Technologie
6. Anwendung
7. Zukunft
8. Ausführung
9. Nachbemerkung
10. ReferenzThe aim is to bring together the sub-fields of computer science, artificial intelligence and virtual reality, which have been established in teaching and research for decades, in a generally understandable way and to place them in both the information technology and social context. The arc ranges from historical roots to current issues to future opportunities and threats. The aim is to reproduce the insights, findings and experiences gained from the own theoretical and practical work in a compact form and to encourage readers or listeners to think for themselves about the topic in their fields of expertise and work.:1. Vorbemerkung
2. Einführung
3. Vergangenheit
4. Konzeption
5. Technologie
6. Anwendung
7. Zukunft
8. Ausführung
9. Nachbemerkung
10. Referen