ABB Files Patent for AI-Based Confidence Heatmap in P&AEng Document Processing

ABB Ltd., Switzerland, has filed a patent titled “AI-Based Confidence Heatmap for P&AEng Document Processing” with the China National Intellectual Property Administration (CNIPA), under publication number CN121638501A, filed in September 2025.

The patent introduces an AI-driven method designed to assess the confidence of structured representations of information within industrial plant environments. The technology generates confidence heatmaps that visually indicate the reliability of specific information segments extracted from engineering documents.

Key aspects of the innovation include:

• Obtaining a target structured representation of information, where confidence estimates are associated with one or more target information fragments.

• Identifying overlaps between these target fragments and information segments from different structured representations.

• Generating a confidence heatmap based on the associated confidence estimates and overlaying it on input documents, enabling intuitive visual evaluation.

• Supporting industrial plants by facilitating structured information analysis, verification, and decision-making.

This patent highlights ABB’s commitment to integrating AI into industrial documentation workflows, enhancing data reliability, efficiency, and safety in complex plant operations.

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