@article{MathiasSchmiedGrossmann2020, author = {Mathias, Selvine George and Schmied, Sebastian and Großmann, Daniel}, title = {A framework for monitoring multiple databases in industries using OPC UA}, volume = {12}, journal = {Journal of Ambient Intelligence and Humanized Computing}, number = {1}, publisher = {Springer}, address = {Berlin}, issn = {1868-5145}, doi = {https://doi.org/10.1007/s12652-020-02850-x}, pages = {47 -- 56}, year = {2020}, abstract = {Database management and monitoring is an inseparable part of any industry. A uniform scheme of monitoring relational databases without explicit user access to database servers is not much explored outside the database environment. In this paper, we present an information distribution scheme related to databases using Open Platform Communication Unified Architecture (OPC UA) servers to clients when multiple databases are involved in a factory. The aim is for external, but relevant clients, to be able to monitor this information mesh independent of explicit access to user schemas. A methodology to dispense data from, as well as check changes in databases using SQL queries and events is outlined and implemented using OPC UA servers. The structure can be used as a remote viewing application for multiple databases in one address space of an OPC UA server.}, language = {en} } @article{SchmiedGrossmannMathiasetal.2020, author = {Schmied, Sebastian and Großmann, Daniel and Mathias, Selvine George and Mueller, Ralph}, title = {Integration of manufacturing information via dynamic information model aggregation}, volume = {8}, journal = {Vietnam Journal of Computer Science}, number = {2}, publisher = {Singapore}, address = {World Scientific}, issn = {2196-8896}, doi = {https://doi.org/10.1142/S219688882150010X}, pages = {245 -- 262}, year = {2020}, abstract = {An important part of the industry 4.0 concept is the horizontal and vertical integration of manufacturing systems. Information exchange in traditional production environments happens through interfaces that are connections between strictly defined senders and receivers. This limits the possibility for changing and extending the manufacturing system. A possible approach to enable the information exchange between all system entities uniformly are information models. Such models are semantic descriptions of the available data. The creation of these models needs to follow the manufacturing process, but also requires certain standardization to improve efficiency. Another challenge is the actual technical integration of the information into a common address space. This paper connects an approach for information modeling with a concept for dynamic aggregation. The approach is described with the help of a continuous example that uses OPC UA as a middleware technology.}, language = {en} } @article{MathiasSchmiedGrossmann2020, author = {Mathias, Selvine George and Schmied, Sebastian and Großmann, Daniel}, title = {An investigation on database connections in OPC UA applications}, volume = {2020}, journal = {Procedia Computer Science}, number = {170}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1877-0509}, doi = {https://doi.org/10.1016/j.procs.2020.03.132}, pages = {602 -- 609}, year = {2020}, abstract = {Open Platform Communications - Unified Architecture (OPC UA) as a communication protocol has been one of the front running IoT enablers in recent years. Many use cases in manufacturing domains demonstrate the vast inter-operability and cross-platform connectivity strengths of OPC UA. However, to consolidate its position in the IoT world, OPC UA needs to be able to bridge certain gaps, like interconnections across multiple database engines over different networks. This paper aims to investigate aggregation dynamics of OPC UA consisting of multiple database servers from a specific environment such as manufacturing. Prevailing databases over restricted networks such as production floors cannot be accessed by respective clients outside the system. In these cases, OPC UA services can provide an a selective but imperative view of data from these databases to the clients. The investigations in this paper are demonstrated with two different implementations of databases related to manufacturing with OPC UA. These applications show that using OPC UA as a means of connection and distribution of information from databases can be an effective solution to a common data view of all connections not necessarily of factory floor network.}, language = {en} } @inproceedings{MuellerGrossmannSchmiedetal.2021, author = {Mueller, Ralph and Großmann, Daniel and Schmied, Sebastian and Mathias, Selvine George}, title = {Architecture of a model in the middle approach for virtual commissioning and integration of production entities}, booktitle = {Proceedings: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-7281-2989-1}, doi = {https://doi.org/10.1109/ETFA45728.2021.9613619}, year = {2021}, language = {en} } @inproceedings{SchmiedGrossmannMathiasetal.2021, author = {Schmied, Sebastian and Großmann, Daniel and Mathias, Selvine George and Mueller, Ralph}, title = {A concept towards the evolution and versioning of aggregated information models}, booktitle = {Proceedings: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-7281-2989-1}, doi = {https://doi.org/10.1109/ETFA45728.2021.9613193}, year = {2021}, language = {en} } @article{SchmiedMathiasGrossmannetal.2021, author = {Schmied, Sebastian and Mathias, Selvine George and Großmann, Daniel and Jumar, Ulrich}, title = {Integration of existing cyber-physical manufacturing systems into a common information model}, volume = {53}, journal = {IFAC-PapersOnLine}, number = {2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2405-8963}, doi = {https://doi.org/10.1016/j.ifacol.2020.12.2827}, pages = {10905 -- 10910}, year = {2021}, abstract = {In order to be able to serve constantly new customer requirements, manufacturing systems must be able to adapt to frequent changes. In addition, repeatedly objects are removed or added to the network. To control and monitor such a constantly changing system a mapping of existing manufacturing systems into a common information model is necessary. This model describes information that is produced and stored in different entities of the complete system. To create a common address space and expose the relations between the devices an aggregation of every element in the system is needed. This paper describes a methodology for the creation of an information model for a complete manufacturing environment, followed by an approach for the aggregation of the singular system entities. The concept of this paper is illustrated with a demonstrator. The results of this approach have been discussed in the following sections along with the proposal for further directions.}, language = {en} } @inproceedings{MathiasGrossmannSchmiedetal.2022, author = {Mathias, Selvine George and Großmann, Daniel and Schmied, Sebastian and Mueller, Ralph}, title = {Decentralized Integration Approach of Disjoint Modules in Factory Environments}, booktitle = {IEIM 2022: 2022 The 3rd International Conference on Industrial Engineering and Industrial Management}, publisher = {ACM}, address = {New York}, isbn = {978-1-4503-9569-4}, doi = {https://doi.org/10.1145/3524338.3524368}, pages = {195 -- 199}, year = {2022}, language = {en} } @inproceedings{MuellerGrossmannSchmied2022, author = {Mueller, Ralph and Großmann, Daniel and Schmied, Sebastian}, title = {Information model-based virtual commissioning for the testing and co-simulation of real production entities}, booktitle = {IEIM 2022: 2022 The 3rd International Conference on Industrial Engineering and Industrial Management}, subtitle = {Enabling of a logic for the virtual commissioning of information models using middleware technologies}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-4503-9569-4}, doi = {https://doi.org/10.1145/3524338.3524380}, pages = {271 -- 276}, year = {2022}, language = {en} } @article{NothdurftEppleSchroederetal.2018, author = {Nothdurft, Lars and Epple, Ulrich and Schr{\"o}der, Tizian and Diedrich, Christian and Großmann, Daniel and Banerjee, Suprateek and Schmied, Sebastian and Iatrou, Chris Paul and Graube, Markus and Urbas, Leon and Henrichs, Tim Peter and Erben, Stefan}, title = {NOA Demonstratoren Special}, volume = {60}, journal = {atp magazin}, number = {1-2}, publisher = {Vulkan}, address = {Essen}, issn = {2190‑4111}, doi = {https://doi.org/10.17560/atp.v60i01-02.2348}, pages = {44 -- 69}, year = {2018}, language = {de} } @inproceedings{SchmiedGrossmannDenk2019, author = {Schmied, Sebastian and Großmann, Daniel and Denk, Bastian}, title = {A systematic top-down information modelling approach for workshop-type manufacturing systems}, booktitle = {Proceedings 2019 24th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)}, publisher = {IEEE}, address = {Piscataway}, isbn = {978-1-7281-0303-7}, doi = {https://doi.org/10.1109/ETFA.2019.8869377}, pages = {1305 -- 1308}, year = {2019}, language = {en} }