Advanced Biomedical Engineering
Online ISSN : 2187-5219
ISSN-L : 2187-5219
Distinction of Urination or Defecation Using a Gas Sensor Placed Under the Toilet Seat
Daisuke InoueTakahiro IikuniYoshio KanayamaJuhyon KimKazuki Nakajima
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2019 Volume 8 Pages 60-62

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Abstract

We developed an excretion monitoring system equipped with non-contact temperature sensor and a semiconductor gas sensor installed under a toilet seat. The gas sensor is able to detect odors due to human excretion by transiently increasing the output. The peak amplitude and duration of the gas sensor output due to defecation were significantly greater than those due to urination. These results demonstrate the capability of the gas sensor in distinguishing whether the excretion is urination or defecation.

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© 2019 Japanese Society for Medical and Biological Engineering
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