公开(公告)号：US20240405528A1

公开(公告)日：2024-12-05

申请号：US18807795

申请日：2024-08-16

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Udi Blich ,  Eyal Doron ,  Oded Shoham ,  Assaf Kaufman ,  Uri Bar-Ziv

IPC: H02G1/12

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.

公开(公告)号：US20230022732A1

公开(公告)日：2023-01-26

申请号：US17757914

申请日：2020-11-30

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Assaf Kaufman ,  Uri Bar-Ziv ,  Alexey Haritonov

IPC: G01N21/952 ,  G01N21/88 ,  G02B13/22 ,  H04N5/225

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-cross-section-measurement tool includes a housing defining a cavity, wherein the housing is configured to position an end-face of an electrical cable within the cavity; a camera disclosed within the cavity of the housing, wherein the camera is configured to capture an image of the end-face of the electrical cable; and a telecentric lens optically coupled to the camera, wherein the telecentric lens comprises a non-angular field of view configured to reduce, in the image, distortion from parallax associated with at least one portion of the end-face of the electrical cable that is oriented at an oblique angle relative to an optical axis of the telecentric lens.

公开(公告)号：US20230020865A1

公开(公告)日：2023-01-19

申请号：US17757629

申请日：2020-12-31

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Uri Bar-Ziv ,  Eyal Doron

IPC: G01R31/12 ,  G01R15/16 ,  G01R19/25 ,  G01R31/08

Abstract: A partial discharge (PD) detection system includes a node including a sensor configured to capacitively couple to a shield layer of a cable of an electric power line. The sensor is configured to collect, from the cable, sensor data indicative of an alternating-current (AC) electrical signal in the cable. The system further includes a high-pass filter configured to filter out low-frequency signals from the sensor data, and processing circuitry configured to detect, based on the filtered sensor data, a PD event at a location on the cable that is local to the sensor.

公开(公告)号：US20220029395A1

公开(公告)日：2022-01-27

申请号：US17309690

申请日：2019-12-20

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems, Ltd.

Inventor： Douglas B. Gundel ,  Assaf Kaufman ,  Uri Bar-Ziv

IPC: H02G1/12

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable.

公开(公告)号：US20250125597A1

公开(公告)日：2025-04-17

申请号：US18989740

申请日：2024-12-20

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Assaf Kaufman ,  Uri Bar-Ziv ,  Alexey Haritonov

IPC: H02G1/12 ,  G01B11/06 ,  G01B11/08 ,  G01B11/14 ,  G01N21/88 ,  G01N21/952 ,  G02B13/22 ,  H01R43/28 ,  H04N23/55

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a cable-cross-section-measurement tool includes a housing defining a cavity, wherein the housing is configured to position an end-face of an electrical cable within the cavity; a camera disclosed within the cavity of the housing, wherein the camera is configured to capture an image of the end-face of the electrical cable; and a telecentric lens optically coupled to the camera, wherein the telecentric lens comprises a non-angular field of view configured to reduce, in the image, distortion from parallax associated with at least one portion of the end-face of the electrical cable that is oriented at an oblique angle relative to an optical axis of the telecentric lens.

公开(公告)号：US20250096539A1

公开(公告)日：2025-03-20

申请号：US18961668

申请日：2024-11-27

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Udi Blich ,  Eyal Doron ,  Oded Shoham ,  Assaf Kaufman ,  Uri Bar-Ziv

IPC: H02G1/12

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a cable preparation device configured to cut one or more layers of an electrical cable and a computing device configured to control the cable preparation device to cut the one or more layers of the electrical cable. The computing device may determine one or more target cutting distances and determine whether an actual cutting distance satisfies the target cutting distance. The computing device may detect defects in the electrical cable. The computing device may further determine whether the cable preparation device should be serviced.

公开(公告)号：US12066470B2

公开(公告)日：2024-08-20

申请号：US17597881

申请日：2020-07-30

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Udi Blich ,  Eyal Doron

IPC: G01R25/00 ,  G01R19/175 ,  G01R35/00

CPC classification number: G01R19/175 ,  G01R35/005

Abstract: Techniques, methods, systems and articles are described for monitoring electrical equipment of a power grid, identifying installation and/or configuration errors of such electrical equipment, and automatically correcting the errors. In one example, a system includes at least one processor and a plurality of sensors coupled to a multi-phase power line comprising a plurality of electrical cables that are each associated with a respective phase. The plurality of sensors are configured to generate sensor data that is indicative of one or more conditions of the electrical cables. The at least one processor is configured to receive the sensor data and determine, based at least in part on the sensor data, whether a sensor of the plurality of sensors is installed correctly. The at least one processor is also configured to perform an action in response to determining that the sensor is not installed correctly.

公开(公告)号：US12062891B2

公开(公告)日：2024-08-13

申请号：US17309755

申请日：2019-12-20

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems, Ltd.

Inventor： Douglas B. Gundel ,  Assaf Kaufman ,  Uri Bar-Ziv

IPC: H02G1/12 ,  H04N7/18 ,  H04N23/51

CPC classification number: H02G1/1265 ,  H02G1/1248 ,  H02G1/127 ,  H04N7/188 ,  H04N23/51

Abstract: Techniques, systems and articles are described for preparing electrical cables for connections to a power grid. In one example, a system includes a rotatable tool head having a plurality of rollers, a cutting tool, a signal reflection target coupled to the at least one cutting tool, a transceiver configured to transmit a signal toward the reflection target and detect a reflected signal from the reflection target; and at least one computing device configured to cause the transceiver to transmit the signal toward the reflection target and determine, based on the reflected signal, a current relative position of the cutting tool.

公开(公告)号：US20230176106A1

公开(公告)日：2023-06-08

申请号：US18161744

申请日：2023-01-30

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems Ltd.

Inventor： Douglas B. Gundel ,  Eyal Doron ,  Lior Embon ,  Udi Blich

IPC: G01R31/12 ,  G01R31/58 ,  H02G1/14

CPC classification number: G01R31/1272 ,  G01R31/58 ,  H02G1/14

Abstract: Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a cable accessory is configured to couple to an electrical power cable and includes a partial discharge sensor and a communications unit. The partial discharge sensor is configured to detect partial discharge events and output data indicative of the partial discharge events. The communications unit is configured to output event data based at least in part on the partial discharge data.

公开(公告)号：US20210311131A1

公开(公告)日：2021-10-07

申请号：US17273922

申请日：2019-09-05

Applicant: 3M Innovative Properties Company ,  Connected Intelligence Systems, Ltd

Inventor： Douglas B. Gundel ,  Eyal Doron ,  Lior Embon ,  Udi Blich

IPC: G01R31/58 ,  H01B9/00 ,  G01R31/12 ,  G01K7/42

Abstract: Techniques, systems and articles are described for monitoring electrical equipment of a power grid and predicting likelihood failure events of such electrical equipment. In one example, a sensing device is configured to couple to an electrical power cable. The sensing device includes a plurality of concentric layers and a monitoring device. The plurality of concentric layers include a first layer, second layer, and third layer. The first layer is configured to concentrically surround a central conductor of the electrical cable and includes an insulating material. The second layer includes a conducting material. The third layer includes a resistive material configured to resist electrical flow between the second layer and a ground conductor exterior to the third layer. The monitoring device includes a sensor and communication unit configured to output data indicative of the sensor data.