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    • 1. 发明授权
    • Sensor assemblies used to detect the proximity of a material to a microwave element
    • 用于检测材料与微波元件的接近度的传感器组件
    • US08674707B2
    • 2014-03-18
    • US13164835
    • 2011-06-21
    • Boris Leonid SheikmanSherrie Ann ClarkSusan Lee Roush
    • Boris Leonid SheikmanSherrie Ann ClarkSusan Lee Roush
    • G01R27/04G01R27/06
    • G01S13/04G01S13/08
    • Sensor assemblies used to detect the proximity of a material to a microwave element are disclosed. One example sensor assembly includes a signal generator configured to generate at least one microwave signal, a coupler connected to the signal generator, a microwave element coupled to the coupler, and a processing module connected to the coupler. The microwave element is configured to generate an electromagnetic field as a function of said at least one microwave signal. The microwave element is structured to reflect a loading signal to said coupler when a material interacts with the electromagnetic field. The processing module is configured to process the loading signal with a reference signal to generate a data signal representative of the proximity of the material to the microwave element. The data signal defines a sub-microwave frequency.
    • 公开了用于检测材料与微波元件的接近度的传感器组件。 一个示例传感器组件包括被配置为产生至少一个微波信号的信号发生器,连接到信号发生器的耦合器,耦合到耦合器的微波元件以及连接到耦合器的处理模块。 微波元件被配置为产生作为所述至少一个微波信号的函数的电磁场。 当材料与电磁场相互作用时,微波元件构造成将加载信号反映到所述耦合器。 处理模块被配置为用参考信号处理加载信号以产生表示材料与微波元件的接近度的数据信号。 数据信号定义了一个亚微波频率。
    • 10. 发明授权
    • Position encoder
    • 位置编码器
    • US06561022B1
    • 2003-05-13
    • US09786416
    • 2001-10-11
    • Richard Alan DoyleEuan MorrisonAndrew James WhiteVictoria Ann Clark
    • Richard Alan DoyleEuan MorrisonAndrew James WhiteVictoria Ann Clark
    • G01F2360
    • A47J31/4457G01F23/68G01F23/72
    • A linear position sensor is provided which employs phase quadrature sensor windings, an excitation winding and a resonator. When an excitation current is applied to the excitation winding, it causes the resonator to resonate which in turn induces signals in the sensor windings. The sensor windings are spatially arranged so that the electromagnetic coupling between them and the resonator varies with the position of the resonator. The excitation windings, phase quadrature windings and resonant circuit are arranged so that the magnetic fields involved in the operation of the position sensor are substantially parallel to each other and the direction of movement of the resonator. Consequently, the effect of rotation of the resonator or lateral movement of it relative to the excitation and phase quadrature windings is alleviated.
    • 提供了一种使用相位正交传感器绕组,励磁绕组和谐振器的线性位置传感器。 当励磁电流施加到励磁绕组时,它使谐振器谐振,这又导致传感器绕组中的信号。 传感器绕组在空间上布置成使得它们与谐振器之间的电磁耦合随着谐振器的位置而变化。 励磁绕组,相位正交绕组和谐振电路被布置成使得与位置传感器的操作相关的磁场基本上彼此平行并且谐振器的移动方向。 因此,减轻了谐振器的旋转或其相对于激励和相位正交绕组的横向运动的影响。