Abstract
Several daily human-behaviors are identified using plural odor-sensor arrays. This study was done to investigate a survey system for the aged who lived in solitude. Human beings occur various odors in their household life. The odors can be classified into two fields, namely occur from a body and occur by a vital action in a domestic environment. The concentration of the former odor is very low. The odor that generates at preparing a meal belongs to the latter, and it is comparatively high concentration. Sleeping, having a meal and awakening which are basic human behaviors can be identified using plural odor-sensor arrays. These array outputs are characterized using 2-D, 3-D graphs are also useful. As for the results, it becomes obvious that several basic indoor human behaviors can be identified by the plot-places of the sensor-array characteristics. The characteristics are caused by sensor sensitivities and odor concentrations that depend on human behaviors. This system is useful for the invasion of privacy of the occupant.
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