Capacitance sensor
    3.
    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

    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
    4.
    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

    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。

    Measurement method, sensor arrangement and measurement system
    5.
    发明授权
    Measurement method, sensor arrangement and measurement system 有权
    测量方法,传感器布置和测量系统

    公开(公告)号:US08368393B2

    公开(公告)日:2013-02-05

    申请号:US12668004

    申请日:2008-06-18

    IPC分类号: G01B7/30

    摘要: In a measurement method, an array of magnetic field sensors (MS0-MS15) is provided, each emitting a sensor signal as a function of magnetic field intensity. A rotational value of a sector-wise magnetized magnetic source that is arranged movably with respect to the array is ascertained as a function of the emitted sensor signals. A set of sensor values is derived from the sensor signals. As a function of the ascertained rotational value, a number of sets of reference values is ascertained that corresponds to a number of predetermined positions of the magnetic source (MAG). The set of sensor values and the number of sets of reference values are compared to one another, and a position is selected from the number of predetermined positions as a function of the comparison.

    摘要翻译: 在测量方法中,提供了一个磁场传感器阵列(MS0-MS15),每个发射一个传感器信号作为磁场强度的函数。 根据发射的传感器信号确定相对于阵列可移动地布置的扇形磁化磁源的旋转值。 从传感器信号得到一组传感器值。 根据确定的旋转值的函数,确定与磁源(MAG)的预定位置的数量相对应的多组参考值。 将传感器值的集合和参考值的集合彼此进行比较,并且作为比较的函数从预定位置的数量中选择位置。

    Measurement Method, Sensor Arrangement and Measurement System
    6.
    发明申请
    Measurement Method, Sensor Arrangement and Measurement System 有权
    测量方法,传感器布置和测量系统

    公开(公告)号:US20110025313A1

    公开(公告)日:2011-02-03

    申请号:US12668004

    申请日:2008-06-18

    IPC分类号: G01B7/30

    摘要: In a measurement method, an array of magnetic field sensors (MS0-MS15) is provided, each emitting a sensor signal as a function of magnetic field intensity. A rotational value of a sector-wise magnetized magnetic source that is arranged movably with respect to the array is ascertained as a function of the emitted sensor signals. A set of sensor values is derived from the sensor signals. As a function of the ascertained rotational value, a number of sets of reference values is ascertained that corresponds to a number of predetermined positions of the magnetic source (MAG). The set of sensor values and the number of sets of reference values are compared to one another, and a position is selected from the number of predetermined positions as a function of the comparison.

    摘要翻译: 在测量方法中,提供了一个磁场传感器阵列(MS0-MS15),每个发射一个传感器信号作为磁场强度的函数。 根据发射的传感器信号确定相对于阵列可移动地布置的扇形磁化磁源的旋转值。 从传感器信号得到一组传感器值。 根据确定的旋转值的函数,确定与磁源(MAG)的预定位置的数量相对应的多组参考值。 将传感器值的集合和参考值的集合彼此进行比较,并且作为比较的函数从预定位置的数量中选择位置。