Abstract
Death due to drowning accounts for about 30% of unintentional injuries of 1 to 4 year-old infants in Japan. This paper describes two kinds of newly developed systems for preventing infants' drowning accident at home. One system is a sensor floor for detecting infant's "access" to bathroom. The other is a wave motion sensor system for detecting "injury occurrence" by monitoring unusual wave motion occurring immediately after drowning occurs. As for the sensor floor, the authors conducted experiments for 21 infants from 0 to 6 year-old. The success rate of detection is 99.2% for a target age group. A new finding related to infant's step is also described. As for the wave motion sensor system, fundamental performance of the system is reported.
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