The architecture of ambient assisted living system

Ambient Assisted Living is an intelligent system of assistance that can help senior citizens to improve their quality of life, stay healthier, and extend their lifespan, thus enabling them to expand their active and creative participation in the community. The system provides an interactive environment for people with special needs, based on ubiquitous sensing, individual-environment interaction, context awareness, and learning information systems. It provides a full cycle of processes, including sensing the individual´s activity and behavior, preprocessing of sensors data, information aggregation, reasoning, and interaction with the individual and with external factors such as relatives and care services. The system is based on ambient intelligence, i.e. its infrastructure is pervasive, with a large number of distributed devices that communicate between themselves as well as with centralized services.