Improving telemetry data quality with OPC UA - Use case on crusher automation
Peltoniemi, Einari (2024)
2024
Automaatiotekniikan DI-ohjelma - Master's Programme in Automation Engineering
Tekniikan ja luonnontieteiden tiedekunta - Faculty of Engineering and Natural Sciences
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Hyväksymispäivämäärä
2024-05-20
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202405135780
https://urn.fi/URN:NBN:fi:tuni-202405135780
Tiivistelmä
New data collection and analysis methods enable a data-driven environment, data is gath-ered from devices and their operational environments for analysis. This study, commissioned by Metso crusher automation engineering in Tampere, focuses on identifying challenges faced by experts analysing data from rock crushers. Specifically, it explores how transitioning to the OPC UA communication standard can enhance data quality and address identified issues.
The literature review delves into data quality concepts and investigates OPC UA communica-tion features, while also exploring Modbus TCP/IP and CANopen communication protocols in existing systems. Interviews with Metso experts reveal practical challenges in data usage and quality, guiding the formulation of solutions leveraging OPC UA features.
To identify the data quality related problems of the existing system, interviews were con-ducted with experts at Metso. They described how they use the collected data in their work, and what problems they have encountered related to its quality. Based on the problems and uses identified from these interviews, it was devised how the problems could be solved with the features of OPC UA communication.
The results of this work include an OPC UA interface data model structure and content de-fining types that can be used as individual parts when building a data acquisition interface. The proposed type structures are designed to cover all the data and data structures that need to be collected from the crushing units, including their related metadata elements. Additionally, a general structure for the interface information model is proposed.
While OPC UA communication is more complex than that of the protocols used by the exist-ing system interfaces, its rich set of features provide significant advantages for security, in-formation modeling and metadata management. These advantages can provide significant im-provements to the quality of the data acquired from the interface.
The OPC UA interface data model structure proposed in this thesis could be used in further development of a proof-of-concept interface. Furthermore, the different OPC UA node types that are proposed could be utilized in designing a fully-fledged interface of a crusher for future control systems.
The literature review delves into data quality concepts and investigates OPC UA communica-tion features, while also exploring Modbus TCP/IP and CANopen communication protocols in existing systems. Interviews with Metso experts reveal practical challenges in data usage and quality, guiding the formulation of solutions leveraging OPC UA features.
To identify the data quality related problems of the existing system, interviews were con-ducted with experts at Metso. They described how they use the collected data in their work, and what problems they have encountered related to its quality. Based on the problems and uses identified from these interviews, it was devised how the problems could be solved with the features of OPC UA communication.
The results of this work include an OPC UA interface data model structure and content de-fining types that can be used as individual parts when building a data acquisition interface. The proposed type structures are designed to cover all the data and data structures that need to be collected from the crushing units, including their related metadata elements. Additionally, a general structure for the interface information model is proposed.
While OPC UA communication is more complex than that of the protocols used by the exist-ing system interfaces, its rich set of features provide significant advantages for security, in-formation modeling and metadata management. These advantages can provide significant im-provements to the quality of the data acquired from the interface.
The OPC UA interface data model structure proposed in this thesis could be used in further development of a proof-of-concept interface. Furthermore, the different OPC UA node types that are proposed could be utilized in designing a fully-fledged interface of a crusher for future control systems.