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    Ultrasonic liquid level sensor
    2.
    发明公开
    Ultrasonic liquid level sensor 有权
    Ultraschall-flüssigkeitspegelsensor

    公开(公告)号：EP1850098A2

    公开(公告)日：2007-10-31

    申请号：EP07251087.8

    申请日：2007-03-15

    申请人： Sintes, Hugh Corum ,  Becroft, Mario Brian Daniel ,  Pryor, Raymond John ,  Smith, Andrew Bryce

    发明人： Sintes, Hugh Corum ,  Becroft, Mario Brian Daniel ,  Pryor, Raymond John ,  Smith, Andrew Bryce

    IPC分类号： G01F23/296

    CPC分类号： G01F23/2962 ,  G01F23/2968 ,  Y10T137/7287 ,  Y10T137/7306

    摘要： The invention comprises a level sensor (1) for providing an indication of liquid level in a container comprising: an ultrasonic transducer for emitting an ultrasonic signal to the surface of the liquid and for detecting a return signal, reflected from the surface, a controller that instructs the transducer to emit ultrasonic signals and receives an indication that a return signal has been detected, the controller comprising a timer for measuring the time period between emission of the ultrasonic signal and receipt of a return signal, the determined time period providing an indication of the liquid level, and a radio transmitter that receives an indication of the liquid level and transmits a radio liquid level signal comprising the level indication to a remote output unit.

    摘要翻译： 本发明包括用于提供容器中的液位指示的液位传感器（1），包括：超声波换能器，用于向液体表面发射超声波信号，并检测从表面反射的返回信号，控制器 指示换能器发射超声波信号并接收已经检测到返回信号的指示，所述控制器包括用于测量发射超声波信号和接收到返回信号之间的时间段的定时器，所确定的时间段提供 液位，以及无线电发射机，其接收液面的指示，并将包括电平指示的无线电液位信号发送到远程输出单元。