Distinction of urination or defecation using a gas sensor placed under the toilet seat

Daisuke Inoue, Takahiro Iikuni, Yoshio Kanayama, Juhyon Kim, Kazuki Nakajima*

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

3 Scopus citations

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.

Original languageEnglish
Pages (from-to)60-62
Number of pages3
JournalAdvanced Biomedical Engineering
Volume8
DOIs
StatePublished - 2019

Keywords

  • Defecation
  • Excrement
  • Odor
  • Urination
  • Uroflowmeter

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Computer Science Applications

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