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논문 기본 정보

자료유형
학술저널
저자정보
Yun-Suk Choi (Hoseo University) In Hwan Lee (Chungbuk National University)
저널정보
한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제18권 제5호
발행연도
2019.5
수록면
1 - 8 (8page)

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초록· 키워드

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Breath analysis using a portable device is better than the classical breath analysis system in terms of installation and operation. There is an increasing need to develop cost-effective equipment for testing gas sensors from the viewpoint of functionalities that can be applied applicable to portable devices. In the present study, an economical gas chamber for in-situ gas measurement is implemented with a single gas chamber without using expensive gas storage and control equipment; the gas response characteristics are analyzed using the above-described chamber. The main features of the implemented gas chamber are simple injection procedure, improved gas diffusion, easy measurement and cleaning, support for low-power mode measurement function for portable devices, and open source platform. Moreover, an analysis of gas response characteristics based on changes in sensor voltage show that the sensitivity and 90% response time are affected by the sensor voltage. Furthermore, the sensitivity graph has an inflection point in a specific range. The gas sensor applied in this study showed fast response speed and high sensitivity for sensor voltages of 3.0-3.5 V, regardless of the concentration of acetone gas, the target gas used in this study.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusion
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UCI(KEPA) : I410-ECN-0101-2019-581-000684654