필름형 레벨센서의 민감도 향상을 위한 설계 방법
Design Method for Improving Sensitivity of Film-type Level Sensors
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To increase the sensitivity of film-type level sensors for water-level measurements, a Wheatstone bridge comprising a half-bridge circuit with a new film-type level sensor design containing four resistors and two electrodes was employed. The proposed film-type levelsensor included a temperature compensation feature and demonstrated improved sensitivity owing to a two-fold increase in the voltageoutput. Furthermore, a repetition error of less than 1.0% was observed for water levels. As the change in resistance varied linearly withthe water level, a linear function was derived to represent their relation. Using this derived formula, water level measurements that weretwice as precise as those yielded by commercial products were achieved.
Abstract
To increase the sensitivity of film-type level sensors for water-level measurements, a Wheatstone bridge comprising a half-bridge circuit with a new film-type level sensor design containing four resistors and two electrodes was employed. The proposed film-type levelsensor included a temperature compensation feature and demonstrated improved sensitivity owing to a two-fold increase in the voltageoutput. Furthermore, a repetition error of less than 1.0% was observed for water levels. As the change in resistance varied linearly withthe water level, a linear function was derived to represent their relation. Using this derived formula, water level measurements that weretwice as precise as those yielded by commercial products were achieved.
참고문헌 (7)
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