1994 Fiscal Year Final Research Report Summary
Development of active odor sensing system with odor blender
| Project/Area Number |
04555093
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
計測・制御工学
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
MORIIZUMI Toyosaka Tokyo Institute of Technology Faculty of Engineering, Professor, 工学部, 教授 (80016534)
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| Co-Investigator(Kenkyū-buntansha) |
SONODA Yasuhisa Nissan Co., Engineer, 車体実験部, 技師(研究職)
IDE Junichi T.Hasegawa Co., Chief Researcher, 川崎研究所, 主任研究員
NAKAMOTO Takamichi Tokyo Institute of Technology, Faculty of Eng., Associate Professor, 工学部, 助教授 (20198261)
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| Project Period (FY) |
1992 – 1994
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| Keywords | Active sensing / Pattern matching / Sensor array / Quartz-resonator gas sensor / Semiconductor gas sensor / Nonlinear optimization algorithm / Simplex method / Gradient descent method |
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| Research Abstract |
Active odor sensing system for quantifying mixed aromas was developed. In the system, plural known vapors are actively and autonomously blended so that the output pattern from a sensor array can be made equal to that of an unknown vapor. The mixture composition of aromas can be obtained from the blended ratio in the system. The modification of that ratio is iteratively performed using a nonlinear optimization algorithm.
Using this system, gasoline concentration was successfully measured in spite of the existence of interference vapors. Then, the optimization algorithm such as gradient descent method was improved and its accuracy and the stability was enhanced.
Finally, the application to fragrances was studied. The identification of various essential oils, the separation among optical isomers were successfully performed. Moreover, the experiments on quantifying the mixture composition of several fundamental compounds in fragrances were performed.
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