반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

보일러용 정전용량형 수위센서 시스템 개발

Development of Capacitive Water Level Sensor System for Boiler

  • 이영태 (안동대학교 바이오 ICT 융합공학과) ;
  • 권익현 (안동대학교 바이오 ICT 융합공학과)
  • Lee, Young Tae (Department of Bio-ICT Engineering, Andong National University) ;
  • Kwon, Ik Hyun (Department of Bio-ICT Engineering, Andong National University)
  • 투고 : 2021.09.01
  • 심사 : 2021.09.16
  • 발행 : 2021.09.30
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초록

In this paper, a capacitive water level sensor for boilers was developed. In order to accurately monitor the water level in a high-temperature boiler that generates a lot of precipitates, the occurrence of precipitates on the surface of the water level sensor should be small, and a sensor capable of measuring even if the sensor surface is somewhat contaminated is required. The capacitive water level sensor has a structure in which one of the two electrodes is insulated with Teflon coating, and the stainless steel package of the water level sensor is brought into contact with the water tank so that the entire water tank becomes another electrode of the water level sensor. A C-V converter that converts the capacitance change of the capacitive water level sensor into a voltage change was developed and integrated with the water level sensor to minimize noise. The performance of the developed capacitive water level sensor was evaluated through measurement.

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참고문헌

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