ID:
publications-3732
Type:
article
Year:
2020
Authors:
Lu, Qiuchen and Lu, Qiuchen and Lu, Qiuchen and Xie, Xinyou and Xie, Xiang and Parlikad, Ajith Kumar and Parlikad, Ajith Kumar and Schooling, Jennifer and Schooling, Jennifer
Title:
Digital twin-enabled anomaly detection for built asset monitoring in operation and maintenance
Venue/Journal:
Automation in Construction
DOI:
10.1016/j.autcon.2020.103277
Research type:
Water System:
Technical Focus:
Abstract:
Abstract Effective asset management plays a significant role in delivering the functionality and serviceability of buildings. However, there is a lack of efficient strategies and comprehensive approaches for managing assets and their associated data that can help to monitor, detect, record, and communicate operation and maintenance (O&M) issues. With the importance of Digital Twin (DT) concepts being proven in the architecture, engineering, construction and facility management (AEC/FM) sectors, a DT-enabled anomaly detection system for asset monitoring and its data integration method based on extended industry foundation classes (IFC) in daily O&M management are provided in this study. This paper presents a novel IFC-based data structure, using which a set of monitoring data that carries diagnostic information on the operational condition of assets is extracted from building DTs. Considering that assets run under changing loads determined by human demands, a Bayesian change point detection methodology that handles the contextual features of operational data is adopted to identify and filter contextual anomalies through cross-referencing with external operation information. Using the centrifugal pumps in the heating, ventilation and air-cooling (HVAC) system as a case study, the results indicate and prove that the novel DT-based anomaly detection process flow realizes a continuous anomaly detection of pumps, which contributes to efficient and automated asset monitoring in O&M.
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