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WSFiS

Web Services for Fieldbus Systems

Kontakt Prof. Dr. rer. nat. Volker Turau
Mitarbeiter Dr. Marcus Venzke
Christoph Weyer
Beginn 1. Juni 2003
Ende 31. Dezember 2008

Projektbeschreibung

Das Projekt WSFiS hat die vertikale Integration von Feldbussystemen mit Hilfe von Web Services untersucht. Feldbussysteme sind System im industriellem Umfeld deren Komponenten mit Bussystemen vernetzt sind. Ihre vertikale Integration zielt auf das wachsende Interesse Informationen in Automatisierungssystemen in der Ebene des operationalen Managements zu verwenden, um die Produktion oder Ihre Überwachung zu optimieren (z. B. für Supply-Chain-Management, Enterprise Resource Planning oder Manufacturing Execution Systems). Webservices sind hierfür eine geeignete Technologie, weil sie Interoperabilität und hohe Abstraktionsebenen mit Webtechnologie ermöglichen.

Im Projekt werden generische Techniken entwickelt, mit denen Daten aus und die Kontrolle von Feldbussystemen als Webservice zur Verfügung gestellt werden können. Es wurden Schnittstellen hoher Abstraktionsebenen definiert, die die große Latenz des Internets berücksichtigen. Die Abstraktionen entsprechen der Sicht des Entwicklers auf das System und werden mit Hilfe von Metadaten realisiert, die das jeweilige Feldbussysteme schreiben.

Publikationen

Marcus Venzke, Christoph Weyer und Volker Turau. Application Specific vs. Standard Web Service Interfaces for the Vertical Integration of Fieldbus Systems. In Proceedings of the Third Workshop on Intelligent Solutions in Embedded Systems (WISES'05), Mai 2005, pp. 153–162. Hamburg, Germany.
@InProceedings{Telematik_VWT_2005_WebService, author = {Marcus Venzke and Christoph Weyer and Volker Turau}, title = {Application Specific vs. Standard Web Service Interfaces for the Vertical Integration of Fieldbus Systems}, booktitle = {Proceedings of the Third Workshop on Intelligent Solutions in Embedded Systems (WISES'05)}, pages = {153-162}, day = {20}, month = may, year = 2005, location = {Hamburg, Germany}, }
Abstract: The paper compares two approaches for developing Web service interfaces for the vertical integration of TTP/A fieldbus systems. High-level abstractions are provided by application specific interfaces, generated from metadata describing fieldbus systems. In contrast standardised interfaces such as OPC XML DA only allow lower levels of abstractions. But these enable accessing the fieldbus system from a broad range of standard clients, while high-level abstractions reflecting the application programmer's view on the system facilitate the development of more specific clients and workflows.
Volker Turau, Marcus Venzke, Christoph Weyer und Yesenia Vigil. Vertical Integration of TTP/A Fielbus Systems Using Web Services. In Proceedings of the First International Conference on Informatics in Control, Automation and Robotics (ICINCO'04), August 2004, pp. 390–393. Setubal, Portugal.
@InProceedings{Telematik_TVW_2004_VerticalIntegration, author = {Volker Turau and Marcus Venzke and Christoph Weyer and Yesenia Vigil}, title = {Vertical Integration of TTP/A Fielbus Systems Using Web Services}, booktitle = {Proceedings of the First International Conference on Informatics in Control, Automation and Robotics (ICINCO'04)}, pages = {390-393}, month = aug, year = 2004, location = {Setubal, Portugal}, }
Abstract: This paper presents a generic technique to expose data and control of fieldbus systems to applications located at the level of operational management. To provide a high degree of interoperability between the operational level and different fieldbus systems we utilize standardized techniques such as XML, HTTP, and Web services which can be deployed independently of the platform. The proposed service is based on the interface file system for TTP/A smart transducers. The defined interface provides high level abstractions appropriate for the integration into business applications and considers the latency introduced by the internet protocols.
Volker Turau, Marcus Venzke und Christoph Weyer. A Web Service for TTP/A Fieldbus Systems based on Meta-Data. In Proceedings of the Second Workshop on Intelligent Solutions in Embedded Systems (WISES'04), Juni 2004, pp. 159–168. Graz, Austria.
@InProceedings{Telematik_TVW_2004_MetaData, author = {Volker Turau and Marcus Venzke and Christoph Weyer}, title = {A Web Service for TTP/A Fieldbus Systems based on Meta-Data}, booktitle = {Proceedings of the Second Workshop on Intelligent Solutions in Embedded Systems (WISES'04)}, pages = {159-168}, month = jun, year = 2004, location = {Graz, Austria}, }
Abstract: This paper is concerned with the vertical integration of fieldbus systems. It presents a generic technique to expose data and control of fieldbus systems in a semantically rich way to applications located at the level of operational management. To provide a high degree of interoperability between the operational level and different fieldbus systems we utilize standardized techniques such as XML, HTTP, and Web services which can be deployed independently of the platform. The proposed service is based on the interface file system for TTP/A smart transducers. The defined interface provides high level abstractions appropriate for the integration into business applications and considers the latency introduced by the internet protocols. The operations of the service are automatically generated from meta-data descriptions of the smart transducers and their combination into larger clusters.
Marcus Venzke und Stefan Pitzek. Accessing Fieldbus Systems via Web Services. In Proceedings of the First Workshop on Intelligent Solutions in Embedded Systems (WISES'03), Juni 2003. Vienna, Austria.
@InProceedings{Telematik_VP_2003_WebServices, author = {Marcus Venzke and Stefan Pitzek}, title = {Accessing Fieldbus Systems via Web Services}, booktitle = {Proceedings of the First Workshop on Intelligent Solutions in Embedded Systems (WISES'03)}, day = {27}, month = jun, year = 2003, location = {Vienna, Austria}, }