MAGNETIC FLUX CANCELLATION FOR POWER LINE COMMUNICATIONS

    公开(公告)号:EP3800794A1

    公开(公告)日:2021-04-07

    申请号:EP20198889.6

    申请日:2020-09-29

    IPC分类号: H04B3/56

    摘要: An apparatus comprising a signal transformer coupled to a power line and a signal transmission, reception, or detection circuit. A sensor is configured to be responsive to the power line current or magnetic flux generated in a ferrite core of the signal transformer. When the sensor indicates that the flux generated by the power line current mat cause an attenuation of the signal strength, a second circuit generates a current through a flux cancelling winding that cancels at least some of the flux generated by the power line current.

    REPORTING DEVICE FOR MULTIMODAL ARTICLE INTERFACE

    公开(公告)号:EP3681005A1

    公开(公告)日:2020-07-15

    申请号:EP19305023.4

    申请日:2019-01-08

    申请人: Energysquare

    摘要: A reporting device for association with an article having power requirements is provided, where the reporting device is capable of performing communications operations, for example to specify the article's power requirements, and power supply using a single pair of conductors. Communications are performed at a lower voltage than the voltage intended for power supply operations. Optionally the communications interface of the reporting device may be disconnected at higher voltages, and the operational circuits of the reporting device may be disconnected at lower voltages, and circuits preventing inversion of voltages across the conductors, or reverse currents when the operational circuits are connected to the conductors may be provided. The reporting device may be used in connection with charging surfaces providing a matrix of conductive surfaces, and supports operation with a corresponding coupling manager.