| 摘要 |
PROBLEM TO BE SOLVED: To provide a small, inexpensive and sanitary diaper exchange time notifying device which correctly notifies a diaper exchange time and is easily used by arrangement on a cloth diaper or a disposable paper diaper for the baby of general home. SOLUTION: At least one humidity sensor for measuring humidity by perceiving moisture to be exhaled from the diaper, based on the moisture by faeces or urine, is arranged at the outer side of the diaper, so as to calculate a difference between the measured humidity value and a prescribed value and the portion of change of the measured humidity value in a fixed period. When the difference exceeds the prescribed value and the change portion exceeds the prescribed value, a usage limit is determined in the diaper. Then an alarm signal is outputted to correctly notify the diaper exchange time. When the measurement value of the humidity sensor is detected to be a reduced value being not more than a fixed value after the fixed time elapses, the alarm signal is released. Accordingly, the diaper exchange time is correctly notified. COPYRIGHT: (C)2006,JPO&NCIPI
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