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    • 1. 发明申请
    • 電極式液位検出装置及び電極式液位検出方法
    • 电极型液位检测装置和电极型液位检测方法
    • WO2015083349A1
    • 2015-06-11
    • PCT/JP2014/005934
    • 2014-11-27
    • 株式会社 東芝
    • 鶴田 暁鍵福 辰緒光山 徳
    • G01F23/24G01F25/00
    • G01F25/0076G01F23/24G01F23/242G01F23/243G01F25/0061
    • 実施形態によれば、電極式液位検出装置は、液位の検出に用いる少なくとも2つの液位計測電極(2,3)及び液位の検出に用いない校正用電極(11)が一体化された電極部と、電極部の各電極(2,3,11)の使用前の抵抗値を初期抵抗値として記録する記録部(20)と、初期抵抗値に基づいて被測定物の抵抗値を算出する演算部(40)と、少なくとも2つの液位計測電極(2,3)の使用時の抵抗値の変化に応じて、被測定物1の有無を判断する閾値を調整するように制御する制御部(30)と、を備える。これにより、計器の劣化に対応して正確に液位を検出することができる。
    • 根据本发明的一个实施方式,电极型液面检测装置具有电极单元,该电极单元通过使至少两个用于该目的的液位测量电极(2,3)形成一体化 检测液位的检测电极和不用于检测液面的校正用电极(11); 记录单元(20),其在使用前记录电极单元的电极(2,3,11)的初始电阻值; 基于初始电阻值计算被测量对象的电阻值的运算单元(40) 以及控制单元(30),其执行控制,使得至少两个液位测量电极(2,...)的电阻值的变化被调整,使得用于确定是否存在被摄体(1)的阈值, 3)使用期间。 因此,可以根据仪器的劣化精确地检测液位。
    • 3. 发明申请
    • AUTOMATED PHASE SEPARATION AND FUEL QUALITY SENSOR
    • 自动相分离和燃油质量传感器
    • WO2009089339A3
    • 2009-10-08
    • PCT/US2009030427
    • 2009-01-08
    • DIRACTION LLCDRACK EARLE DAVID
    • DRACK EARLE DAVID
    • G01N27/74G01F1/56G01F23/18G01M3/26G01N27/00
    • G01N33/22G01F23/243G01F23/263G01F23/266G01M3/00G01M3/3245G01N33/18
    • A fluid characterization sensor comprising a plurality of sensor segments is disclosed. Each segment comprises two electrodes, spaced apart so the fluid in the corresponding interval of depth for that segment is positioned between them. Complex current or impedance is measured by exciting one electrode with an AC signal, and measuring the amplitude and phase of the current in the other electrode. After automatically measuring and accounting for pre-determined gain, offset, temperature, and other parasitic influences on the raw sensor signal, the complex electrical impedance of the fluid between the electrodes is calculated from the measured phase/amplitude and/or real/imaginary components of the received electrical current signal and/or the variation of the measured response with variation in excitation frequency. Comparison of measured results with results taken using known fluids identifies fluid properties. Alternatively, measured results are compared to predicted results using forward models describing expected results for different fluids or contaminants.
    • 公开了包括多个传感器段的流体特性传感器。 每个段包括两个间隔开的电极,使得该段的相应的深度间隔的流体位于它们之间。 通过用AC信号激励一个电极并测量另一个电极中的电流的幅度和相位来测量复电流或阻抗。 在对原始传感器信号进行自动测量和计算预先确定的增益,偏移,温度和其他寄生影响之后,从测量的相位/幅度和/或实部/虚部中计算电极之间的流体的复电阻抗 的接收电流信号和/或测量响应随激励频率变化的变化。 测量结果与使用已知流体的结果进行比较可以确定流体性质。 或者,使用描述不同流体或污染物的预期结果的前向模型将测量结果与预测结果进行比较。
    • 4. 发明申请
    • SENSOR FOR EARLY WARNING OF SEISMIC ACTIVITIES
    • 传感器早日警告地震活动
    • WO2008143588A1
    • 2008-11-27
    • PCT/SG2007/000144
    • 2007-05-23
    • NANYANG POLYTECHNICPRABHU, Vinayak AshokONG, Hui Yng
    • PRABHU, Vinayak AshokONG, Hui Yng
    • G01V1/16G01F23/22G01H3/00
    • G01H17/00G01F23/243G01V1/181G05D9/12
    • The present invention provides a sensor for sensing vibration. The sensor having a container for containing conductive fluid; a ground electrode provided within the container, wherein the ground electrode is in contact with the conductive fluid when the sensor is in an operational; and a sensing electrode adjacent to the ground electrode in space, the sensing electrode is configured to be in a close proximity to the conductive fluid. In operation, the conductive fluid causes electrical conduction between the ground electrode and the sensing electrode when fluid ripples occur and the sensing electrode touches the conductive fluid. The sensor further provides a fluid level detector for triggering an automatic refiller to refill fluid when the fluid level drop below a desired level.
    • 本发明提供一种用于感测振动的传感器。 传感器具有用于容纳导电流体的容器; 设置在所述容器内的接地电极,其中当所述传感器处于操作状态时,所述接地电极与所述导电流体接触; 以及与空间中的接地电极相邻的感测电极,感测电极被配置为紧邻导电流体。 在操作中,当流体波纹发生并且感测电极接触导电流体时,导电流体在接地电极和感测电极之间引起电导通。 传感器进一步提供一个液位检测器,用于当液位下降到期望水平以下时,触发自动重新填充器重新填充流体。
    • 6. 发明申请
    • LIQUID LEVEL SENSOR HAVING A VIRTUAL RING
    • 具有虚拟环的液位传感器
    • WO2005106818A3
    • 2006-02-09
    • PCT/US2005010413
    • 2005-03-29
    • STANDEX INT CORPCHAMBERLIN EDWARD R
    • CHAMBERLIN EDWARD R
    • G01F23/24G01F23/68G08B21/00
    • G01F23/683G01F23/242G01F23/243
    • A liquid level sensor for conductive liquids having a virtual bias ring to prevent false "full" indications. The sensor is an inexpensive conductive probe that can be installed in any tank or container used to contain a conductive liquid. The build up of residue such as conductive fluid that fails to drain on the inside of the container wall and probe pieces can cause a short between the probe and ground. This situation will result in falsely showing that the level of the liquid being measured is at least at the minimum predetermined requirement even though the actual level may be far less than that amount. The bias ring is a virtual "ring" that is provided around the insulating base of the sensing probe between the probe tip and the top inside of the tank. The probe is then given a charge (positive for negative ground systems) which interrupts the current path between the sensing tip of the probe and ground via the conducting residue. Consequently, the sensor will read correctly despite the conductive residue that may be present.
    • 一种用于导电液体的液位传感器,其具有虚拟偏置环以防止假的“全”指示。 传感器是便宜的导电探头,可以安装在任何用于容纳导电液体的罐或容器中。 残留物的积聚,例如不能在容器壁和探针片内部排出的导电流体可能导致探针和地面之间的短路。 这种情况将导致错误地显示待测液体的水平至少达到最低预定要求,即使实际水平可能远远小于该量。 偏置环是虚拟的“环”,其设置在探针尖端和罐顶部之间的感测探针的绝缘基底周围。 然后向探头提供电荷(负接地系统的正极),其中断通过导电残渣的探头的感测尖端和接地之间的电流路径。 因此,尽管可能存在导电残留物,传感器仍将正确读取。
    • 9. 发明申请
    • SYSTEM FOR DETECTING A LIQUID LEVEL
    • 安排用于检测液位
    • WO01081876A2
    • 2001-11-01
    • PCT/DE2001/001410
    • 2001-04-10
    • G01F23/24G01F23/00
    • G01F23/243G01F23/242
    • The invention relates to a system for detecting a liquid level, wherein the electrodes (2, 3) of a sensor (S) are disposed in the area of the liquid level to be monitored and the electrodes (2, 3) are linked with an electronic evaluation circuit by which the change of resistance that occurs between the electrodes (2, 3) when they contact the liquid is convertible to an evaluation signal. A circuit element (Q1; Q2) signals that the level is surpassed, the sensor (S) being connected to the circuit element (Q1; Q2) together with a timer (R2, C1) so that when the supply current (U) for the evaluation circuit is switched on in an interval predetermined by means of the timer (R2, C1), a signal is output even when the electrodes (2, 3) do not contact the liquid.
    • 它提出了一种用于检测液体水平(2,3)的布置,其中,电极的传感器(S)设置在的区域的要被监视液位和电极(2,3)连接到电子评估电路,借助于该电阻变化的 在电极之间(2,3)是不可改变与在评估信号的液体接触时。 经由开关装置(Q1; Q2)进行了电平交叉的信令,所述传感器(S)连同定时元件(R2,C1)的开关器件(Q1; Q2)被连接,这样,当电源电压(U),用于 在评估电路与定时元件(R2,C1)的预定时间段,即使没有电极的接触的信令(2,3)与所述液体中进行。
    • 10. 发明申请
    • LIQUID LEVEL SENSOR FOR INK JET PRINTERS
    • 喷墨打印机用液位传感器
    • WO1996011385A1
    • 1996-04-18
    • PCT/GB1995002162
    • 1995-09-14
    • THE GENERAL ELECTRIC COMPANY, PLC
    • THE GENERAL ELECTRIC COMPANY, PLCSTAMER, Michael, ElmerSHARPE, Colin, Richard
    • G01F23/24
    • B41J2/17503B41J2/17513B41J2/17556B41J2/17566B41J2002/17579G01F23/242G01F23/243
    • The ink level sensor of the invention comprises an ink container (46) having a generally cylindrical shield (56) extending downward from its top to define sheielded and unshielded compartments (52, 54) within the container (46). Ink, but not foam, froth or mist, flows under the shield (56) to the shielded compartment (52). A plurality of conductive rods (66, 68, 70, 72) of differing lengths extend downwardly into the shielded compartment (52) from the container top. The rods are connected to an impedance network (48) which provides signals representative of the ink level inside the container (46). A vacuum source (42) can be connected to each compartment to maintain pressure equilibrium in the compartments (52, 54) and to prevent foam, froth or mist from entering the shielded compartment (52). Alternatively, a return pump is used to force ink into the container (46) such that each compartment can be vented to the atmosphere.
    • 本发明的油墨液位传感器包括一个油墨容器(46),该油墨容器(46)具有从其顶部向下延伸的大致圆柱形的屏蔽(56),以在容器(46)内限定屏蔽和非屏蔽隔室(52,54)。 油墨,但不是泡沫,泡沫或雾,在屏蔽(56)下面流到屏蔽隔间(52)。 多个不同长度的导电棒(66,68,70,72)从容器顶部向下延伸到屏蔽隔室(52)中。 杆连接到阻抗网络(48),阻抗网络(48)提供表示容器(46)内的墨水水平的信号。 真空源(42)可以连接到每个隔间以保持隔室(52,54)中的压力平衡,并且防止泡沫,泡沫或雾气进入屏蔽室(52)。 或者,返回泵用于迫使墨水进入容器(46),使得每个隔室可以排放到大气中。