Optimization of Odor Blending for 20-component Olfactory Display

Abstract

An olfactory display is a device that presents an odor to the user. In this research, odor components were used to reproduce a variety of scents by blending them at the specified ratio. A perfume is supplied from an electroosmotic pump to a microdispenser, and the multiple odor components ejected from the microdispensers are atomized by the surface acoustic wave device to produce the blended odor. Digital-to-Analog converter was introduced to promote automation and jigs were improved for convenience. A total of 21 solenoid valve droplet volumes were investigated, and it was found that the performance of the solenoid valves and the discharge volume differed for each solenoid valve. We then verified through sensory test whether calibration of the droplet volume is necessary, and found that it is better to compensate for the droplet volume for smell presentation.