おむつ交換までの複数回排尿の排尿時刻と尿吸収量を検知する静電容量センサ

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タイトル別名
  • A Capacitive Sensor that Detects Urination Time and Urine Absorption Volume in Multiple Urinations before Changing a Diaper
  • オムツ コウカン マデ ノ フクスウカイ ハイニョウ ノ ハイニョウ ジコク ト ニョウ キュウシュウリョウ オ ケンチ スル セイデンヨウリョウ センサ

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抄録

<p>Diapers are used by elderly people who require nursing and have difficulty in urinating in the toilet. Some sensors have been developed that detect urination in a diaper. However, most of them cannot evaluate the urine absorption volume. Moreover, if elderly people urinate more than once before a diaper change, the second and subsequent urinations cannot be detected by the developed sensors. Therefore, a capacitive sensor system that can quantitatively evaluate the urine absorption volume multiple times by attaching the sensor to the outer surface of a diaper is developed. In this study, a phantom, i.e., a waist-type torso mannequin, filled with saline solution was used. When pseudo-urine was infused into the diaper, the capacitance rapidly decreased. Afterward, as the absorbed pseudo-urine spread on the diaper, the capacitance drifted and decreased. Furthermore, when the same amount of pseudo-urine was additionally infused into the diaper, the rapid decrease in capacitance became larger. To compensate for the decrease in capacitance, the time from the first urination was employed as a variable. As a result, the compensated values of capacitance change increased linearly with the amount of urine absorption volume in multiple urinations before changing a diaper. An elderly female who required nursing and used diapers participated in this study. In the feasibility test, multiple urinations were quantitatively evaluated.</p>

収録刊行物

  • 生体医工学

    生体医工学 60 (2-3), 61-67, 2022-06-10

    公益社団法人 日本生体医工学会

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