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Opportunistic occupancy-count estimation using sensor fusion: A case study
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DOI：10.1016/j.buildenv.2019.05.032.png)
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摘要
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Estimation of occupancy counts in commercial and institutional buildings enables enhanced energy-use management and workspace allocation. This paper presents the analysis of cost-effective, opportunistic data streams from an academic office building to develop occupancy-count estimations for HVAC control purposes. Implicit occupancy sensing via sensor fusion is conducted using available data from Wi-Fi access points, CO2 sensors, PIR motion detectors, and plug and light electricity load meters, with over 200 h of concurrent ground truth occupancy counts. Multiple linear regression and artificial neural network model formalisms are employed to blend these individual data streams in an exhaustive number of combinations. The findings suggest that multiple linear regression models are the superior model formalism when model transferability between floors is of high value in the case study building. Wi-Fi enabled device counts are shown to have high utility for occupancy-count estimations with a mean R-2 of 80.1-83.0% compared to ground truth counts during occupied hours. Aggregated electrical load data are shown to be of higher utility than separately submetered plug and lighting load data.
Keyword:
Occupancy detection
Occupancy-count estimation
Sensor fusion
Occupancy-centric controls
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期刊
IF:
7.6
论文数:
1.3W
被引数:
6.6W
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