Middleware infrastructure for monitoring bed activity

This work describes a service oriented middleware platform for Ambient Assisted Living and its use in two different bed activity services: bedsore prevention and sleeping monitoring. A detailed description of the middleware platform, its elements and interfaces, as well as a service that is able to classify some typical user's positions in the bed are presented. The key idea of this work is to leverage the presence of wireless sensor networks by collecting the received signal strength (RSS) measured among fixed general purpose wireless devices, deployed in the environment, and a wearable one.