Occupancy monitoring using environmental & context sensors and a hierarchical analysis framework

Khan, Aftab, Nicholson, James, Mellor, Sebastian, Jackson, Daniel, Ladha, Karim, Ladha, Cassim, Hand, Jon, Clarke, Joseph, Olivier, Patrick and Plötz, Thomas (2014) Occupancy monitoring using environmental & context sensors and a hierarchical analysis framework. In: Buildsys '14 - 1st ACM Conference on Embedded Systems for Energy-Efficient Buildings, 3rd - 6th November 2014, Memphis, USA.

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Official URL: http://dx.doi.org/10.1145/2674061.2674080


Saving energy in residential and commercial buildings is of great interest due to diminishing resources. Heating ventilation and air conditioning systems, and electric lighting are responsible for a significant share of energy usage, which makes it desirable to optimise their operations while maintaining user comfort. Such optimisation requires accurate occupancy estimations. In contrast to current, often invasive or unreliable methods we present an approach for accurate occupancy estimation using a wireless sensor network (WSN) that only collects non-sensitive data and a novel, hierarchical analysis method. We integrate potentially uncertain contextual information to produce occupancy estimates at different levels of granularity and provide confidence measures for effective building management. We evaluate our framework in real-world deployments and demonstrate its effectiveness and accuracy for occupancy monitoring in both low-and high-traffic area scenarios. Furthermore, we show how the system is used for analysing historical data and identify effective room misuse and thus a potential for energy saving.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Occupancy estimation; Hierarchical modeling; Environmental sensing; Energy
Subjects: K200 Building
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: Paul Burns
Date Deposited: 26 Sep 2018 11:57
Last Modified: 01 Aug 2021 09:46
URI: http://nrl.northumbria.ac.uk/id/eprint/35912

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