Measurement of human behavior in a daily life based on the understanding of biological rhythm

We concentrate on the rhythms of daily life that are basic for the safety and health of elderly people, and develop a measurement evaluation technology. In this report, we introduce a technology that measures body movement in bed by using an infrared sensor system to evaluate the quality of sleep. In addition, we classify daily life behavior from the viewpoint of QOL (quality of life) into about 15 kinds of body activities, and provide standard behavior for each body activity. We introduce technology that measures body activity in daily life by using acceleration sensors.