著者

久慈 憲夫

出版者

八戸工業高等専門学校

雑誌

八戸工業高等専門学校紀要 (ISSN:03854124)

巻号頁・発行日

vol.41, pp.29-34, 2006-12-15

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A novel life-rhythm analysis system, which secures safety of living-alone seniors by sensor network, has been developed. Sensor network consists of sensor nodes which are composed of various sensors, CPU and a wireless communication module. Sensing data are transferred to the host computer through wireless communications among sensor nodes. Since the sensor network enables us to place processors and various kinds of sensors in any places, we can not only obtain much more life-rhythm information, but can also control electric appliances in the household. The developed system acquires sensing data from sensor network and transfers them to a database on a host computer through internet. Clients access the database through web browsers. The system was applied to measurement of actual home environment. As a result, it was shown that many kinds of life rhythms, such as washroom usage, rising hour, bed time, coming-home time, can be obtained at a time. Also it was confirmed that each sensor node can control external devices, such as LEDs. From these evaluations, we can say that the system is very promising for remote sensing of an extraordinary life rhythm of living-alone seniors and coping with such an unusual situation.