Currently, with regard to audiovisual technology, recording / playback technology based on data conversion is developing, and even on visual displays, various colors are expressed by combining different ratios of the three primary colors.Nakamoto's laboratory has similarly reproduced the scent by changing the ratio of elemental odors, but there were problems such as the need to formulate the liquid level of fragrance and it took time.

　This time, we selected 185 kinds of essential oils from which the aromatic components of plants were extracted, and measured those samples with a mass spectrometer.The obtained data was subjected to multidimensional data analysis to extract 20 types of scent elements that are the basis of various odors, and they were created by mixing the essential oils used for measurement as "elemental odors".

　In addition, a sensory display (a device that presents scents to humans) that can mix multiple ingredients is used to mix the odors of each element by changing the ratio, and by atomizing and presenting, lemons and lavenders, which are typical of 185 types, are presented. Reproduce the scent of 7 kinds of essential oils.After that, a sensory test (test by human sensory function) that compares the scent with the original scent was performed, and the result was that it could be reproduced.

　If the scent can be freely reproduced, the place of utilization will be significantly expanded from the conventional space production, entertainment, advertising, medical field, etc.In the future, we will create a scent library that preserves the composition ratios of elemental odors, aiming to instantly generate various scents according to computer commands.By doing so, it is expected that olfactory ICT will be realized if videos, animations, games, online shopping, etc. can be easily scented and the information is transmitted to remote areas.

Paper information:[Journal of the Institute of Electrical Engineers of Japan E] Research on odor reproduction using a multi-component sensory display