Communicating with an implanted wireless sensor
    62.
    发明授权
    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:US07839153B2

    公开(公告)日:2010-11-23

    申请号:US12466541

    申请日:2009-05-15

    IPC分类号: G01R27/04 G01R35/00

    摘要: The present invention 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. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

    摘要翻译: 本发明通过调节激励信号的相位和频率直到激励信号的频率与传感器的谐振频率相匹配来确定传感器的谐振频率。 该系统以低占空比激励传感器,具有预定频率或一组频率和预定幅度的RF能量门控突发。 激励信号通过磁耦合耦合到传感器,并且感应传感器中的电流,其以传感器的谐振频率振荡。 系统通过磁耦合接收传感器的响铃响应,并确定传感器的谐振频率,用于计算测量的物理参数。 该系统使用一对锁相环来调节激励信号的相位和频率。

    Communicating with an Implanted Wireless Sensor
    67.
    发明申请
    Communicating with an Implanted Wireless Sensor 有权
    与移植无线传感器通信

    公开(公告)号:US20090115396A1

    公开(公告)日:2009-05-07

    申请号:US12349606

    申请日:2009-01-07

    IPC分类号: G01R23/12 G01D1/14

    摘要: The present invention 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. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

    摘要翻译: 本发明通过调节激励信号的相位和频率直到激励信号的频率与传感器的谐振频率相匹配来确定传感器的谐振频率。 该系统以低占空比激励传感器,具有预定频率或一组频率和预定幅度的RF能量门控突发。 激励信号通过磁耦合耦合到传感器,并且感应传感器中的电流,其以传感器的谐振频率振荡。 系统通过磁耦合接收传感器的响铃响应,并确定传感器的谐振频率,用于计算测量的物理参数。 该系统使用一对锁相环来调节激励信号的相位和频率。

    Communicating with an implanted wireless sensor
    68.
    发明授权
    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:US07439723B2

    公开(公告)日:2008-10-21

    申请号:US11748053

    申请日:2007-05-14

    IPC分类号: G01R23/12 G01R35/00

    摘要: The present invention 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. The system energizes the sensor with a low duty cycle, gated burst of RF energy having a predetermined frequency or set of frequencies and a predetermined amplitude. The energizing signal is coupled to the sensor via magnetic coupling and induces a current in the sensor which oscillates at the resonant frequency of the sensor. The system receives the ring down response of the sensor via magnetic coupling and determines the resonant frequency of the sensor, which is used to calculate the measured physical parameter. The system uses a pair of phase locked loops to adjust the phase and the frequency of the energizing signal.

    摘要翻译: 本发明通过调节激励信号的相位和频率直到激励信号的频率与传感器的谐振频率相匹配来确定传感器的谐振频率。 该系统以低占空比激励传感器,具有预定频率或一组频率和预定幅度的RF能量门控突发。 激励信号通过磁耦合耦合到传感器,并且感应传感器中的电流,其以传感器的谐振频率振荡。 系统通过磁耦合接收传感器的响铃响应,并确定传感器的谐振频率,用于计算测量的物理参数。 该系统使用一对锁相环来调节激励信号的相位和频率。