抄録
This paper describes the outline of a new 2watch over assist system", which helps to prevent elderly to become bed-ridden, by promptly recognizing falling and simultaneously notifying to persons who give care. The system is featured by 1) ensuring compatibility between privacy protection and real-time detection/notification, 2) abnormality detection and notification function adjusted to the life pattern of each individual person, by using various low-cost ubiquitous sensors and behavioral analysis of their data.