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A platform for research: civil engineering, architecture and urbanism
CAPACITANCE TYPE WATER LEVEL SENSOR
PROBLEM TO BE SOLVED: To provide a capacitance type water level sensor which can precisely and quickly determine the existence or non-existence of water and the existence or non-existence of fouling.SOLUTION: A capacitance type water level sensor is characterized in that determination means determines that water exists in the vicinity of a reception electrode when a detection signal output from the detection means is equal to or below a first reference value for determining the existence of water, and a voltage amplitude of a high-frequency pulse signal applied to a first shield electrode is smaller than a voltage amplitude of a high-frequency pulse signal applied to a transmission electrode.SELECTED DRAWING: Figure 2
【課題】水の有無および付着物の有無を正確に、高速に判定できる静電容量型水位センサを提供できる。【解決手段】判定手段は、検出手段が出力する検出信号が、水が有る判定するための第１の基準値以下の場合に、受信電極の近傍に水が有ると判定し、第１のシールド電極に印加される高周波パルス信号の電圧振幅は、送信電極に印加される高周波パルス信号の電圧振幅よりも小さい、ことを特徴とする静電容量型水位センサ。【選択図】図２
CAPACITANCE TYPE WATER LEVEL SENSOR
PROBLEM TO BE SOLVED: To provide a capacitance type water level sensor which can precisely and quickly determine the existence or non-existence of water and the existence or non-existence of fouling.SOLUTION: A capacitance type water level sensor is characterized in that determination means determines that water exists in the vicinity of a reception electrode when a detection signal output from the detection means is equal to or below a first reference value for determining the existence of water, and a voltage amplitude of a high-frequency pulse signal applied to a first shield electrode is smaller than a voltage amplitude of a high-frequency pulse signal applied to a transmission electrode.SELECTED DRAWING: Figure 2
【課題】水の有無および付着物の有無を正確に、高速に判定できる静電容量型水位センサを提供できる。【解決手段】判定手段は、検出手段が出力する検出信号が、水が有る判定するための第１の基準値以下の場合に、受信電極の近傍に水が有ると判定し、第１のシールド電極に印加される高周波パルス信号の電圧振幅は、送信電極に印加される高周波パルス信号の電圧振幅よりも小さい、ことを特徴とする静電容量型水位センサ。【選択図】図２
CAPACITANCE TYPE WATER LEVEL SENSOR
静電容量型水位センサ
KIMURA TAKASHI (author) / KANEKO YOSHIYUKI (author)
2017-10-05
Patent
Electronic Resource
Japanese
IPC:
G01F
Messen des Volumens, des Durchflussvolumens, des Massendurchflusses oder des Füllstandes
,
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL
/
A47K
Sanitäre Ausstattung, soweit nicht anderweitig vorgesehen
,
SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR
/
E03D
WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES
,
Wasserklosetts oder Urinale mit Spülvorrichtungen
Capacitance-Type Sensor System for Characterizations of Icing Behavior
| British Library Online Contents | 2014