Wilhelm, SebastianJakob, DietmarAhrens, DianeAlt, FlorianSchneegass, StefanHornecker, Eva2020-09-162020-09-162020https://dl.gi.de/handle/20.500.12116/34264Presence detection systems are becoming more and more important and are used in smart home environments, in the Ambient Assisted Living (AAL) domain or in surveillance technology. Common systems focuses on using motion sensors or cameras, which have only a limited viewing angle and therefore monitoring gaps can easily occur within a room. Humans produce carbon dioxide (𝐶𝑂2) through their respi- ration, which is distributed in rooms. As a result, if one (or more) persons are in a room, a significant increase in 𝐶𝑂2 concentration in the room can be noted. With this work we investigate an approach to detect the presence or absence of people indoors by monitoring the 𝐶𝑂2 concentration in the ambient air.ensensor datahuman activity recognition (HAR)ambient assisted living (AAL)presence detectionsurveillancecarbon dioxidecarbon dioxide monitoringText/Conference Paper10.1145/3404983.3409991