Communicating with an implanted wireless sensor
    43.
    发明申请
    Communicating with an implanted wireless sensor 有权
    与植入式无线传感器进行通信

    公开(公告)号:US20070247138A1

    公开(公告)日:2007-10-25

    申请号:US11717967

    申请日:2007-03-14

    Abstract: Aspects of the present invention determine the resonant frequency of a sensor by obtain sensor signals in response to three energizing signals, measure the phase of each sensor signal, and using a group phase delay to determine the resonant frequency. The phase difference between the first and second signal is determined as a first group phase delay. The phase difference between the second and third signal is determined as a second group phase delay. The first group phase delay and second group phase delay are compared. Based on the comparison, the system may lock on the resonant frequency of the sensor or adjust a subsequent set of three energizing signals.

    Abstract translation: 本发明的方面通过响应于三个激励信号获得传感器信号来确定传感器的谐振频率,测量每个传感器信号的相位,并且使用组相位延迟来确定谐振频率。 第一和第二信号之间的相位差被确定为第一组相位延迟。 第二和第三信号之间的相位差被确定为第二组相位延迟。 比较第一组相位延迟和第二组相位延迟。 基于比较,系统可以锁定传感器的谐振频率或调整后续的一组三个通电信号。

    Cable Assembly for a Coupling Loop
    44.
    发明申请
    Cable Assembly for a Coupling Loop 有权
    用于耦合回路的电缆组件

    公开(公告)号:US20070181331A1

    公开(公告)日:2007-08-09

    申请号:US11668601

    申请日:2007-01-30

    Abstract: A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. A cable attached to the coupling loop provides maximum isolation between the energizing signal and the sensor signal by maximizing the distance between the coaxial cables that carry the signals and maintaining the relative positions of the coaxial cables throughout the cable assembly.

    Abstract translation: 提供耦合环路或天线,其可以与通过调节激励信号的相位和频率来确定传感器的谐振频率的系统一起使用,直到通电信号的频率与传感器的谐振频率匹配。 连接到耦合回路的电缆通过使承载信号的同轴电缆之间的距离最大化并且保持同轴电缆在整个电缆组件中的相对位置来提供激励信号和传感器信号之间的最大隔离。

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