日本福祉工学会誌　論文　概要

日本福祉工学会誌 Vol. 8, No. 2, pp. 20-28 (2006)

高齢者の安否確認に適した液流検出センサ^＊

高野光雄^*1，石堂まゆ^*2，松本武^*2，三田地成幸^*3

A low-cost liquid flow sensor suitable to confirm safety of elderly person

Mitsuo TAKANO, Mayu ISHIDO, Takeru MATSUMOTO, Seiko MITACHI

Since water is an indispensable thing used for various fields of everyday life, water is appropriate to use as a sensing objective for safety check of senior persons living alone. Regarding to flow pattern in a commercial flow sensor, we have examined two type sensors for toilet flushing, and developed a monitoring sensor working only at the flushing. Basic mechanism of the sensor is inductive electric Voltage generated by rotation of a magnet built-in a plastic float in solenoid coil mounted on a commercial flow sensor. Our sensors do not need any electric source to activate, and its fabrication is possible with low cost because of using cheap commercial materials. In order to obtain actual working data, field experiments were conducted at a family for successive 5 or 6 days. The results show output Voltage changes coincide not only with frequency of the toilet use, but with time. It is assumed that a correlative and statistical analysis for multiplied the sensors equipped to individual water providing system such as tap, toilet, garden watering machine, etc. will make it use to monitor healthiness check for senior citizens.

Key Words : Liquid Flow Sensor, Safety Check , Senior Person Living Alone.

日本福祉工学会 : The Japan Society for Welfare Engineering