Towards wearable sensing-based assessment of fluid intake

—Fluid intake is an important information for many health and assisted living applications. At the same time it is inherently difficult to monitor. Existing reliable solutions require augmented drinking containers, which severely limits the applicability of such systems. In this paper we investigate two key components of an unobtrusive, wearable solution that is independent of a particular drinking container or environment. We first describe a system for spotting individual instances of drinking (lifting a container to the mouth and taking a single sip) in a continuous stream of data from a wrist-worn acceleration sensor. We show that drinking motion can be detected across different drinking containers (glass, cup, large beer mug, bottle) on a large dataset (560 drinking motion instances from six users, embedded in 5.84 hours of complex natural activities). An average performance of 84% recall at 94% precision was achieved for the drinking motion spotting. Based on the events deriv...

• Type: Journal
• Year: 2010
• Where: PERCOM
• Authors: Oliver Amft, David Bannach, Gerald Pirkl, Matthias Kreil, Paul Lukowicz
• Keywords: Augmented Drinking, Computer Networks, Container Type, PERCOM 2010, fluid Level