3D reconstruction of semantic-rich digital twins for ACMV monitoring and anomaly detection via scan-to-BIM and time-series data integration

IF 6.2 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
XiaYi Chen , Yongjie Pan , Vincent J.L. Gan , Ke Yan
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引用次数: 0

Abstract

Current research in air-conditioning and mechanical ventilation (ACMV) operation focuses on isolated sub-processes and analytical models. Digital twins, as digital replicas of assets, processes, or systems in the built environment, enable facilities manager (FM) to gain insights into the physical features of space, equipment performance, and energy efficiency. This study presents the 3D reconstruction of semantic-rich digital twins, which encompasses conditional and machine learning-enabled monitoring with 3D geometric models, for ACMV modeling and operation. The proposed framework involves a hybrid rule-based and data-driven approach to forecast the performance of indoor environment and identify potential anomalies throughout ACMV operation. Following this, a scan-to-BIM process is undertaken, with the aid of Simultaneous Localization and Mapping algorithms, to semi-automatically generate the as-built geometric models. Lastly, semantic enrichment of BIM is performed by incorporating time-series data from the rule-based and data-driven approach with 3D geometric models. The proposed approach supports the reconstruction of content-aware and semantic-rich digital twins, which utilize sensor-derived time-series data and 3D geometric models, to conduct advanced analysis for intelligent ACMV operation towards energy efficiency and occupant comfort.

通过扫描到 BIM 和时间序列数据集成,三维重建语义丰富的数字孪生,用于 ACMV 监测和异常检测
目前对空调和机械通风(ACMV)运行的研究主要集中在孤立的子流程和分析模型上。数字孪生作为建筑环境中资产、流程或系统的数字复制品,可帮助设施经理(FM)深入了解空间的物理特征、设备性能和能源效率。本研究介绍了语义丰富的数字孪生的三维重建,其中包括条件和机器学习支持的监控与三维几何模型,用于 ACMV 建模和运行。所提出的框架包括一种基于规则和数据驱动的混合方法,用于预测室内环境的性能,并在 ACMV 的整个运行过程中识别潜在的异常情况。随后,借助同步定位和映射算法进行扫描到 BIM 流程,半自动生成竣工几何模型。最后,通过将基于规则和数据驱动的方法中的时间序列数据与三维几何模型相结合,对 BIM 进行语义丰富。所提出的方法支持重构内容感知和语义丰富的数字孪生,利用传感器获得的时间序列数据和三维几何模型,为智能 ACMV 运行进行高级分析,以提高能源效率和居住舒适度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.40
自引率
1.20%
发文量
31
审稿时长
22 days
期刊介绍: Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.
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