An Automation Network With Actively Managed Redundant Connectivity

    公开(公告)号:US20240356686A1

    公开(公告)日:2024-10-24

    申请号:US18687644

    申请日:2021-09-06

    申请人: ABB Schweiz AG

    摘要: A control network for supporting multiple industrial automation devices which operate in radio coverage of at least one radio access network includes: a processor configured to execute applications; at least two wireless network interfaces, each configured to communicate with the automation devices; and a traffic controller configured to provide a logical connection from an executing application to one of the automation devices by maintaining at least two contemporaneous physical connections using respective wireless network interfaces and the radio access network. The control network is further configured to repeatedly adapt a physical redundancy of the logical connection. In some embodiments, the control network is configured to determine a level of independence between the physical connections on the basis of measurements, and adapt the redundancy accordingly. The level of independence may be determined by comparing time series of a quality-of-service related quantity.

    CONTROL DEVICE, CONTROL METHOD, CONTROL PROGRAM, AND SIGNAL FORWARDING CONTROL SYSTEM

    公开(公告)号:US20240275627A1

    公开(公告)日:2024-08-15

    申请号:US18568692

    申请日:2021-06-11

    IPC分类号: H04L12/28 H04L43/087

    CPC分类号: H04L12/28 H04L43/087

    摘要: The signal transfer device receives a periodically transmitted periodic signal and transfers the periodic signal in a reserved window. A control device that controls a signal transfer device includes a storage device configured to store reference information indicating a transmission amount and a transmission period of the periodic signals of each of a plurality of flows received by the signal transfer device. The control device further includes a processor that executes window setting processing based on the reference information. In the window setting processing, the control device sets a schedule of a plurality of windows for each of the plurality of flows in the signal transfer device based on the reference information, and instructs the signal transfer device to reserve the plurality of windows according to the schedule.

    DELAY MEASUREMENT DEVICE, DELAY MEASUREMENT METHOD, AND PROGRAM

    公开(公告)号:US20240129215A1

    公开(公告)日:2024-04-18

    申请号:US18277829

    申请日:2021-02-18

    IPC分类号: H04L43/087

    CPC分类号: H04L43/087 H04L41/12

    摘要: A delay measurement device includes a NW measurement unit that measures a topology, a delay amount of each link, jitter, and a packet loss rate, and causes a NW state holding unit to hold them as NW state information, a link quality calculation unit that calculates the link quality between the end points as a weight on the basis of the NW state information including the topology, the delay amount of each link, the jitter, and the packet loss rate, and a path calculation function unit that calculates a measurement path on the basis of a weighted topology in which the weight of the link quality calculated by the link quality calculation unit is reflected in the topology. The NW measurement unit transmits a measurement packet to a start point and measures the delay amount of a measurement target section of a NW.