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    Supplying fault managed power
    101.
    发明授权
    Supplying fault managed power 有权

    公开(公告)号：US11923678B2

    公开(公告)日：2024-03-05

    申请号：US17562444

    申请日：2021-12-27

    Applicant: Cisco Technology, Inc.

    Inventor： Jason DeWayne Potterf ,  Chad M. Jones ,  Joel Richard Goergen

    IPC: H02H7/26 ,  G01R31/52 ,  G06F1/26 ,  H04B3/54 ,  H04L12/10 ,  H04L25/08

    CPC classification number: H02H7/26 ,  G01R31/52 ,  G06F1/266 ,  H04B3/54 ,  H04L12/10 ,  H04L25/08

    Abstract: Presented herein are techniques for power fault management that operates without power-source-side switching. A power transmitter is configured to provide power to a current loop, and a power receiver is configured to receive the power from the current loop. The power receiver is configured to, on a periodic basis, disconnect from the current loop to stop pulling power from current loop for a period of time to enable a safety check to be performed by the power transmitter. The power transmitter is configured to monitor current on the current loop, determine whether the current level on the current loop passes the safety check within a predetermined time interval since a determination that the current level was not within a safe range, and control connectivity of the power to the current loop based on whether the safety check has or has not passed within the predetermined time interval.

    Fault managed power system
    103.
    发明授权
    Fault managed power system 有权

    公开(公告)号：US11916374B2

    公开(公告)日：2024-02-27

    申请号：US17562464

    申请日：2021-12-27

    Applicant: Cisco Technology, Inc.

    Inventor： Jason Dewayne Potterf ,  Chad M. Jones ,  Joel Richard Goergen

    IPC: H02H7/26 ,  G01R31/52 ,  G06F1/26 ,  H04B3/54 ,  H04L12/10 ,  H04L25/08

    CPC classification number: H02H7/26 ,  G01R31/52 ,  G06F1/266 ,  H04B3/54 ,  H04L12/10 ,  H04L25/08

    Abstract: A system is provided that includes a power transmitter configured to provide power to a current loop, a power receiver configured to receive the power from the current loop. The power receiver is configured to, on a periodic basis, disconnect from the current loop to stop pulling power from the current loop for a period of time to enable a safety check to be performed by the power transmitter. The power transmitter is configured to: monitor current on the current loop; determine whether a current level on the current loop passes the safety check within a predetermined time interval since a determination that the current level was not within a safe range; and control connectivity of the power to the current loop depending on whether the safety check has or has not passed within the predetermined time interval.

    FAULT MANAGED POWER WITH DYNAMIC AND ADAPTIVE FAULT SENSOR
    108.
    发明公开
    FAULT MANAGED POWER WITH DYNAMIC AND ADAPTIVE FAULT SENSOR 审中-公开

    公开(公告)号：US20230223988A1

    公开(公告)日：2023-07-13

    申请号：US18187006

    申请日：2023-03-21

    Applicant: Cisco Technology, Inc.

    Inventor： Douglas Paul Arduini ,  Ruqi Li ,  Chad M. Jones ,  Sung Kee Baek ,  Jason DeWayne Potterf ,  Joel Richard Goergen

    IPC: G06F1/30

    CPC classification number: G06F1/305

    Abstract: Techniques are provided for detecting a fault across a pair of lines. Pulse power is applied across the pair of lines. The pulse power comprises alternating pulse on-time intervals and pulse off-time intervals. During a pulse off-time interval, a resistor is connected across the pair of lines and then disconnected when a voltage across the pair of lines reaches a first droop percentage in a first period of time. After disconnecting the resistor, it is determined whether the voltage across the pair of lines droops at least a second droop percentage within a second period of time that begins after the first period of time. Occurrence of a line-to-line fault across the pair of lines is determined when the voltage across the pair of lines droops by at least the second droop percentage or more within the second period of time.

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