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    Capacitance sensor
    2.
    发明授权
    Capacitance sensor 有权
    电容传感器

    公开(公告)号：US07944216B2

    公开(公告)日：2011-05-17

    申请号：US12329335

    申请日：2008-12-05

    申请人： Georg Brasseur ,  Thomas Bretterklieber ,  Dirk Hammerschmidt ,  Gert Holler ,  Tobias Werth ,  Hubert Zangl

    发明人： Georg Brasseur ,  Thomas Bretterklieber ,  Dirk Hammerschmidt ,  Gert Holler ,  Tobias Werth ,  Hubert Zangl

    IPC分类号： G01R27/26

    CPC分类号： G01D5/2405

    摘要： A capacitance sensor, having at least one electrode is disclosed. A frequency spread signal generation circuit is coupled to the at least one electrode to apply a frequency spread signal based on a spread sequence. A periodic signal with a frequency is coupled to the at least one electrode. A frequency controller is coupled to the frequency spread signal generation circuit to vary the frequency of the periodic signal. A receiver circuit is coupled to the at least one or a further electrode to receive a version of the frequency spread signal which depends on a capacitance applied to the at least one electrode. An evaluation circuit is coupled to the receiver circuit to determine a capacitance value based on the received, dependent version of the frequency spread signal.

    摘要翻译： 公开了具有至少一个电极的电容传感器。 频率扩展信号产生电路耦合到至少一个电极，以基于扩展序列施加频率扩展信号。 具有频率的周期性信号耦合到至少一个电极。 频率控制器耦合到频率扩展信号发生电路以改变周期信号的频率。 接收器电路耦合到所述至少一个或另一个电极，以接收取决于施加到所述至少一个电极的电容的所述频率扩展信号的形式。 评估电路耦合到接收器电路，以基于所接收的频率扩展信号的相关版本来确定电容值。

    Capacitance Sensor
    3.
    发明申请
    Capacitance Sensor 有权
    电容传感器

    公开(公告)号：US20090243633A1

    公开(公告)日：2009-10-01

    申请号：US12329335

    申请日：2008-12-05

    申请人： Georg Brasseur ,  Thomas Bretterklieber ,  Dirk Hammerschmidt ,  Gert Holler ,  Tobias Werth ,  Hubert Zangl

    发明人： Georg Brasseur ,  Thomas Bretterklieber ,  Dirk Hammerschmidt ,  Gert Holler ,  Tobias Werth ,  Hubert Zangl

    IPC分类号： G01R27/26

    CPC分类号： G01D5/2405

    摘要： A capacitance sensor, having at least one electrode is disclosed. A frequency spread signal generation circuit is coupled to the at least one electrode to apply a frequency spread signal based on a spread sequence. A periodic signal with a frequency is coupled to the at least one electrode. A frequency controller is coupled to the frequency spread signal generation circuit to vary the frequency of the periodic signal. A receiver circuit is coupled to the at least one or a further electrode to receive a version of the frequency spread signal which depends on a capacitance applied to the at least one electrode. An evaluation circuit is coupled to the receiver circuit to determine a capacitance value based on the received, dependent version of the frequency spread signal.

    摘要翻译： 公开了具有至少一个电极的电容传感器。 频率扩展信号产生电路耦合到至少一个电极，以基于扩展序列施加频率扩展信号。 具有频率的周期性信号耦合到至少一个电极。 频率控制器耦合到频率扩展信号发生电路以改变周期信号的频率。 接收器电路耦合到所述至少一个或另一个电极，以接收取决于施加到所述至少一个电极的电容的所述频率扩展信号的形式。 评估电路耦合到接收器电路，以基于所接收的频率扩展信号的相关版本来确定电容值。