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    • 88. 发明专利
    • Liquid level detector
    • 液位检测器
    • JP2014085141A
    • 2014-05-12
    • JP2012231985
    • 2012-10-19
    • Yazaki Corp矢崎総業株式会社
    • SAITO AYAKOSHODA TAKAHIRO
    • G01F23/68
    • PROBLEM TO BE SOLVED: To provide a liquid level detector in which the output of magnetic sensors is made to be almost linear to liquid levels so that search for a magnet position becomes unnecessary.SOLUTION: A magnet 3 is floated on a liquid level of liquid stored in a tank 2 and vertically moves in response to changes in the liquid level of the liquid. Four magnetic sensors 5A-5D are vertically arranged to separate from each other within the vertical movement of the magnet 3. An operational amplifier calculates a value obtained by subtracting an addition value, obtained by adding output values of the lower half of the four magnetic sensors 5A-5D, from an addition value, obtained by adding output values of the upper half of the four magnetic sensors 5A-5D, to detect a liquid level.
    • 要解决的问题:提供一种液位检测器,其中使磁传感器的输出几乎与液面线性相关,使得对磁体位置的搜索变得不必要。解决方案:磁体3漂浮在液体液面上 存储在罐2中并且响应于液体的液面的变化而垂直移动。 四个磁性传感器5A-5D被垂直地布置成在磁体3的垂直移动之内彼此分离。运算放大器计算通过将通过将四个磁性传感器的下半部分的输出值相加而得到的相加值 通过增加四个磁传感器5A-5D的上半部分的输出值而获得的加法值来检测液位。