Published September 25, 2023 | Version v1
Journal Open

Knowledge graph-based data integration system for digital twins of built assets

  • 1. ROR icon Universitat Politècnica de Catalunya
  • 2. Department of Civil and Environmental Engineering, Universitat Polit`ecnica de Catalunya, Spain



The emergence of digital twin technologies offers a promising avenue for improving decision-making through the integrated use of up-to-date physical or synthetically simulated data. Nevertheless, the practical implementation of digital twins in the built environment remains a significant challenge. This paper describes a system that seamlessly integrates data into digital twins of built assets. The system uses a knowledge graph to achieve data integration, which is designed to be modular, flexible, and interoperable. The graph includes BIM models, metadata from an external IoT platform, and process-related information. The system is microservice-based and revolves around a graph database housing the knowledge graph. It employs dynamic operations to update the knowledge graph and is tested using civil engineering infrastructure examples. Results from this work can be used to create pipelines that extract and operate with data connecting computational agents integrated into the system as microservices or connected through the system API.


Knowledge graph-based data integration system for digital twins of built assets.pdf

Additional details


Ashvin – Assistants for Healthy, Safe, and Productive Virtual Construction Design, Operation & Maintenance using a Digitial Twin 958161
European Commission