Automation Assembly RCA via Recursive Neighbor Interrogation

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Solution Overview

Problem

Existing industrial automation systems face challenges in performing root cause analysis (RCA) in environments with dynamic structures or frequent reconfigurations, particularly when plants have not been fully modeled or when production shifts between different products.

Innovation Solution

A method and system that enable decentralized root cause analysis by allowing automation components to dynamically discover their plant structure and perform local calculations, reducing the need for manual modeling and external coordination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a plant is manually modeled in software tools with all machines and connections created, then root cause analysis can be performed on external computers, but the process requires very considerable manual effort and time, and data are often not specified by machine manufacturers

Engineering Contradiction:
Improveaccuracy of root cause analysisVSAvoidtime for manual modeling
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The automation components perform self-identification and self-description, automatically providing their identity information and behavior models to neighboring components without requiring manual modeling. Each component autonomously generates and transmits its own data, eliminating the need for external manual plant modeling while maintaining high accuracy for root cause analysis.

Inventive Principle:
Principle #25Self-service

2Loss of information

If all relevant key figures of all machines are stored and continuously reported to a SCADA system, then real-time data are available for analysis, but the data infrastructure becomes complex and requires continuous configuration updates when plant structure changes

Engineering Contradiction:
Improveavailability of dynamic dataVSAvoidcomplexity of data infrastructure
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The system divides the data collection and processing function into autonomous segments at each automation component level. Each component independently manages its own data generation, storage, and transmission to neighbors, eliminating the need for a centralized complex data infrastructure while ensuring continuous availability of dynamic data for real-time analysis.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If the plant structure is frequently reconfigured for different products, then production flexibility is improved, but the manual modeling must be updated continuously which is very time-consuming

Engineering Contradiction:
Improveproduction flexibilityVSAvoidtime for updating models
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system implements dynamic self-configuration where automation components automatically detect structural changes in the plant and update their connectivity information in real-time. When the plant structure changes due to reconfiguration for different products, components autonomously re-establish their neighbor relationships and data exchange paths without requiring manual model updates, thus maintaining production flexibility without time loss.

Inventive Principle:
Principle #15Dynamics

4Ease of operation

If RCA is performed on an external computer with centralized data collection, then analysis can be conducted, but the system requires continuous configuration and updates when automation components are added or removed

Engineering Contradiction:
Improvesimplicity of RCA executionVSAvoidconfiguration maintenance
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Each automation component autonomously maintains its own configuration data and automatically updates its connectivity information when structural changes occur. The decentralized architecture eliminates the need for centralized configuration management, allowing RCA to be executed simply by any component using locally available data from its neighbors without requiring continuous external configuration updates.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12271185B2Method for identifying a process-disrupting automation component in a concatenated automation assembly
Publication Date: 2025.04.08 SIEMENS AG
  • US12271185B2 patent drawing
  • US12271185B2 patent drawing

AI summary

A method and an automation component for identifying a process-disrupting automation component in an industrial automation assembly, wherein a process disruption is determined in a first automation component and examined by a first local analysis device, where an automation component arranged upstream and/or an automation component arranged downstream is first determined by each automation component, an interrogation message is sent from a first automation component to a second automation component and the same interrogation message or a further interrogation message is recursively sent by the second automation component to a third automation component arranged upstream or downstream of the second automation component and processed, where in the event of a locally determined disruption, the relevant automation component sends a response message, which is back-propagated to the origin and signaled such that a decentralized error analysis becomes possible, even with a changing system topology, without the need for any redesign work.