A Basic Study on Capacitive Sensor for Diaper Absorption Volume Estimate

The production of disposable diapers is rising due to an increase in number elderly people who require nursing care. When providing diaper care, it difficult know remotely the time urination and amount urine absorbed by a diaper. Hence, remote sensor system that automatically records being developed. In this study, digital capacitive was developed estimate absorption. Preliminary phantom experiments were conducted investigate basic performance system. We also measured two subjects using A phantom, waist-type torso mannequin filled with saline solution, male wore pad-type on inside tape-type outside. Electrodes attached outer surface measure change capacitance caused urination. preliminary experiment, capacitors known within 5.47% error. decreased as pseudo-urine increased. Moreover, results human urinating five times consistent experiment. Therefore, quantitative evaluation absorption volume possible