전용제어회로를 적용한 딥스틱게이지형 소형 엔진열화감지센서 개발
Development of Dipstick-Gage-Type Small Sensor Equipped with Individual Control Circuit for Detecting Engine Oil Deterioration
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In this study, several sensor parts used to obtain better signal stability are designed, a separate control circuit for the sensor is developed, and the results obtained using this control circuit are analyzed. The capacitances of the whole sensor system are measured using the control circuit connected to an improved flexible printed circuit board and an asymmetric dual sensor coated with a ceramic material. To realize good discrimination for a small change in the measured capacitance as the engine oil deteriorates, a commercial application-specific integrated circuit is installed on the control circuit as a capacitance-to-digital converter. The absolute error of a measured signal is found to be approximately 4fF.
Abstract
In this study, several sensor parts used to obtain better signal stability are designed, a separate control circuit for the sensor is developed, and the results obtained using this control circuit are analyzed. The capacitances of the whole sensor system are measured using the control circuit connected to an improved flexible printed circuit board and an asymmetric dual sensor coated with a ceramic material. To realize good discrimination for a small change in the measured capacitance as the engine oil deteriorates, a commercial application-specific integrated circuit is installed on the control circuit as a capacitance-to-digital converter. The absolute error of a measured signal is found to be approximately 4fF.
참고문헌 (5)
- 전상명, "오일필터 일체형 엔진오일퇴화감지센서 시작품 개발 I", 한국윤활학회지, 24(2), pp.82~89 (2008), 한국윤활학회
- 전상명, "오일필터 일체형 엔진오일퇴화감지센서 시작품 개발(2)", 한국윤활학회지, 24(4), pp.170~178 (2008), 한국윤활학회
- 전상명, "엔진오일 유전상수 변화량 측정에 의한 엔진오일 품질 모니터링 시스템 개발", 한국윤활학회지, 27(3), pp.125~133 (2011), 한국윤활학회
- Chun, S. M., "Engine Oil Degradation Sensor of Dipstick Gage Type and Engine Oil Degradation Monitoring System Using the Same", Patent Application Number 10-2011-0110947, The Korean Intellectual Property Office, ~ (2011)
- 전상명, "딥스틱게이지형 소형 엔진열화감지센서 개발", 한국윤활학회지, 29(2), pp.77~84 (2013), 한국윤활학회[DOI]