Odor sensing characteristics of a lavatory in a general domicile

Takashi Oyabu, Hidehito Nanto, Takeshi Onodera

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Six odor sensors, which are of the metal-oxide semiconductor type, were installed in a lavatory of a residence. Features of sensor-output patterns were investigated by monitoring the odors. Frequency of lavatory-use was detected and kinds of excretion were also identified. As for the results, it appears clear that two or three sensors react to urine and four or five sensors react to feces. The patterns, for example degree of fluctuation and inclination of sensor characteristics, differ with subjects. This system can be applied effectively to homes for the aged to survey the residents' behaviors. The odor sensor system is also effective for monitoring the indoor environment without an infringement of privacy.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalSensors and Actuators, B: Chemical
Issue number1-2
Publication statusPublished - Jun 15 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


Dive into the research topics of 'Odor sensing characteristics of a lavatory in a general domicile'. Together they form a unique fingerprint.

Cite this