← Publications

Systems in practice · 2022

Sensing how buildings are used

Can building sensors reveal patterns of human presence without wearable trackers? A two-year deployment of 390 LoRaWAN sensor nodes tested indoor communication and explored how environmental measurements change with building use. Extra gateways improved transmission reliability. The human-presence analysis remains exploratory: the study did not yet validate these signals against a ground-truth occupancy dataset.

Two room diagrams contrast a sensor worn by a person with a fixed ceiling sensor that observes environmental changes.

The paper contrasts sensors carried by people with sensors built into the surrounding environment. Figure 2.

Grübel et al. (2022), Figure 2, DOI 10.1016/j.pmcj.2022.101640. Extracted from PDF page 4. Source · CC BY 4.0. Cropped to the complete original figure and rasterized; caption supplied separately.

Open full-size figure

Journal article

Dense Indoor Sensor Networks: Towards passively sensing human presence with LoRaWAN

Jascha Grübel, Tyler Thrash, Leonel Aguilar, Michal Gath-Morad, Didier Hélal, Robert W. Sumner, Christoph Hölscher, Victor R. Schinazi

Pervasive and Mobile Computing · 2022

Summary based on Published article with ETH repository cover sheet, PDF pages 2, 23, 25.

DOI: 10.1016/j.pmcj.2022.101640