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Lookup NU author(s): Dr Xiang XieORCiD
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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.
Author(s): Lu QC, Xie X, Parlikad A, Schooling J
Publication type: Article
Publication status: Published
Journal: Automation in Construction
Year: 2020
Volume: 118
Print publication date: 01/10/2020
Online publication date: 25/05/2020
Acceptance date: 19/05/2020
ISSN (print): 0926-5805
ISSN (electronic): 1872-7891
Publisher: Elsevier BV
URL: https://doi.org/10.1016/j.autcon.2020.103277
DOI: 10.1016/j.autcon.2020.103277
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