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    Fluid particle sensor apparatus and method for transmitting data to a remote receiver
    1.
    发明授权
    Fluid particle sensor apparatus and method for transmitting data to a remote receiver 失效
    用于将数据发送到远程接收器的流体颗粒传感器装置和方法

    公开(公告)号：US06392562B1

    公开(公告)日：2002-05-21

    申请号：US09221400

    申请日：1998-12-28

    申请人： Timothy A. Boston ,  Rolland D. Scholl ,  Bruce E. Unger

    发明人： Timothy A. Boston ,  Rolland D. Scholl ,  Bruce E. Unger

    IPC分类号： G08C1700

    CPC分类号： G01N15/0656 ,  G01N33/2888 ,  G08C17/02

    摘要： A sensor for detecting particles in a fluid including a housing having a cavity associated therewith, a magnet disposed adjacent the cavity to attract particles into the cavity, first and second coils wound around the outer surface of the cavity, the induction of the first coil being responsive to the particle accumulation within the cavity, the inductance of the second coil being responsive to the temperature of the fluid and being independent of the particle accumulation within the cavity, a first microprocessor coupled to the first and second coils for processing the signals received therefrom and for outputting signals indicative of the particle accumulation within the cavity, an rf transmitter for converting the signals received from the first microprocessor into rf signals, and an rf antenna for transmitting the processed signals to a remote location. The signals outputted from the first microprocessor are encoded with an identification code to identify and distinguish such signals. A second rf antenna and receiver are positioned at a remote location for receiving the transmitted rf signals. The receiver decodes and processes such transmitted rf signals back into an electrical signal indicative of the particle accumulation within the cavity and inputs such signal into a second microprocessor or electronic controller which stores and monitors such information for diagnostic, prognostic and trend analysis purposes.

    摘要翻译： 一种用于检测流体中的颗粒的传感器，包括具有与其相关联的空腔的壳体;邻近腔体设置的磁体，以将颗粒吸引到空腔中;缠绕在空腔的外表面上的第一和第二线圈，第一线圈的感应 响应于空腔内的颗粒积累，第二线圈的电感响应于流体的温度并且独立于空腔内的颗粒积聚，耦合到第一和第二线圈的第一微处理器，用于处理从其接收的信号 并且用于输出指示空腔内的颗粒累积的信号，用于将从第一微处理器接收的信号转换成rf信号的rf发射器，以及用于将经处理的信号发送到远程位置的rf天线。 从第一微处理器输出的信号用识别码进行编码，以识别和区分这些信号。 第二rf天线和接收器位于远程位置，用于接收所发送的rf信号。 接收机将这样的发送的rf信号解码并处理成指示空腔内的颗粒累积的电信号，并将这些信号输入到第二微处理器或电子控制器中，该第二微处理器或电子控制器存储和监视这些信息以用于诊断，预测和趋势分析。

    Inductive spool displacement sensor
    2.
    依法登记的发明
    Inductive spool displacement sensor 有权
    感应阀芯位移传感器

    公开(公告)号：USH1854H

    公开(公告)日：2000-07-04

    申请号：US221402

    申请日：1998-12-28

    申请人： Timothy A. Boston ,  Bruce E. Unger

    发明人： Timothy A. Boston ,  Bruce E. Unger

    IPC分类号： G01D3/036 ,  G01D5/20 ,  G01B7/14

    CPC分类号： G01D5/2006 ,  G01D3/0365

    摘要： An inductive spool displacement sensor for determining the position or displacement of a spool within a particular hydraulic valve including a sensor housing having a cavity formed therein adapted for mounting within the hydraulic valve, the sensor housing being positioned such that at least a portion of the valve spool is disposed to enter the sensor cavity during certain operations of the valve. The sensor further includes a sensing coil wound about the housing cavity and a reference coil wound about the housing and spaced from the sensing coil, the inductance of the sensing coil being responsive to movement of the spool within the cavity and the inductance of the reference coil being responsive to the temperature of the fluid passing through the hydraulic valve. Based upon eddy current principles and because eddy currents are a function of material conductivity, the sensing coil, when energized, generates a signal indicative of that portion of the spool present within the housing cavity. Electronic circuitry, including a microprocessor, are coupled to the coils for receiving signals therefrom, the microprocessor determining the position of the spool relative to the cavity, or some other predetermined reference point, and outputting a signal proportional to the position or displacement of the spool within the hydraulic valve. The reference coil is provided to compensate for changing inductance values due to changing fluid temperature.

    摘要翻译： 一种用于确定特定液压阀内的阀芯的位置或位移的感应阀芯位移传感器，包括传感器外壳，其中形成有适于安装在液压阀内的空腔，传感器外壳被定位成使阀的至少一部分 阀芯被设置成在阀的某些操作期间进入传感器腔。 传感器还包括围绕壳体腔缠绕的感测线圈和围绕壳体缠绕并与感测线圈隔开的参考线圈，感测线圈的电感响应于腔内的线轴的运动和参考线圈的电感 响应于通过液压阀的流体的温度。 基于涡流原理并且由于涡流是材料导电性的函数，感测线圈在通电时产生指示阀芯内部存在的阀芯的一部分的信号。 包括微处理器的电子电路耦合到用于从其接收信号的线圈，微处理器确定线轴相对于空腔或某些其它预定参考点的位置，并输出与线轴的位置或位移成比例的信号 在液压阀内。 提供参考线圈以补偿由于改变流体温度而改变的电感值。