Managed Historian Namespace Property Correlation
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Solution Overview
Problem
Conventional techniques fail to effectively link changes in process data values with the events responsible for these changes in industrial control and automation systems, limiting the ability to optimize continuous processes.
Innovation Solution
A managed historian utilizes a namespace property to correlate process tag values with corresponding events, generating a graphical user interface that overlays event icons atop data value plots, enabling clear visualization of event impacts on process attribute values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional techniques prepend historian name to process tags and stamp events with GUID, then searching for tags and events is enabled, but linkage between changes in process data values and associated events is not provided
Solution Approach 1:
The patent introduces a namespace property as an intermediary element that bridges process tags and events. This namespace property contains a reference to the application server name, enabling indirect linkage between process data values and events without requiring direct complex associations. The namespace acts as a mediator that simplifies the relationship establishment while preserving the connection information.
2Loss of information
If no correlation mechanism is implemented, then system complexity is reduced, but the ability to understand reasons for data value differences is lost
Solution Approach 1:
The patent adds a new dimension to the data presentation by overlaying event icons visually atop the process data plot in the graphical user interface. This spatial dimension allows users to see both the process data trends and associated events simultaneously in the same visual space, making it easy to understand the relationship between events and data value changes without complex operations.
3Measurement precision
If detailed event correlation is implemented, then understanding of process changes is improved, but data processing complexity increases
Solution Approach 1:
The patent applies local quality by making the namespace property inheritance specific and targeted. Instead of implementing a global complex correlation system, the solution locally adds namespace properties to individual process tags and events that inherit from their respective application servers. This localized approach provides precise correlation capability where needed while keeping the overall system simple and avoiding unnecessary complexity elsewhere.
Data Source
AI summary
Automated correlation of process attribute value changes with events related to the changes. A managed historian utilizes a namespace property to correlate process tag values with corresponding events. The managed historian generates and provides to remote user devices a graphical user interface that includes a plot of data values of the process tag and a visual icon representing the event overlaid atop the plot of data values.