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1. 发明公开

US20230146778A1 System and Method for Electrical Power Line Failure Detection 审中-公开
公开(公告)号：US20230146778A1
公开(公告)日：2023-05-11
申请号：US17983378
申请日：2022-11-08
申请人： Trackonomy Systems, Inc.
发明人： Hendrik J Volkerink , Ajay Khoche , Lawrence William Mcgary, Jr.
IPC分类号： G01R31/08 , G01R15/12 , G01R15/24 , G01R15/14
CPC分类号： G01R31/085 , G01R15/12 , G01R15/144 , G01R15/146 , G01R15/247 , G01R15/202
摘要： A wireless tracking device includes circuit components, a battery, and a circuit connecting the circuit components and the battery. The circuit components include a first wireless communication system, a processor, a memory or storage, and a first sensor operable to measure conditions of the wireless tracking device. The wireless tracking device is configured to attach to an overhead electrical line and detect failure events that are experienced by the overhead electrical line based on sensor data monitored by the wireless tracking device.

2. 发明授权

US11614472B2 Current sensor based on the Faraday effect in an atomic gas 有权
公开(公告)号：US11614472B2
公开(公告)日：2023-03-28
申请号：US17307329
申请日：2021-05-04
申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
发明人： Agustin Palacios Laloy
IPC分类号： G01R15/24 , G01R19/00
摘要： A magneto-optical sensor for sensing a current flowing through a conductor includes a light source capable of providing a linearly-polarised optical beam, and a polarisation analyser configured to perform a differential measurement of two polarisation components of the linearly-polarised optical beam having travelled along an optical path arranged between the light source and the polarisation analyser. The optical path forms a closed trajectory around the conductor. The sensor comprises a cell containing an atomic gas arranged along the optical path.

3. 发明授权

US11555878B2 Current-measuring transducer device having a current-measuring transducer and method for calibrating a current-measuring transducer 有权
公开(公告)号：US11555878B2
公开(公告)日：2023-01-17
申请号：US17266686
申请日：2019-07-09
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Stefan Schuberth
IPC分类号： G01R15/24 , G01R33/032 , G01R35/00 , G01R15/18 , G01R15/20
摘要： A current-measuring transducer device has a current transducer for measuring an electric current along a conduction path. The current transducer has a magnetic field-sensitive element for converting the magnetic field resulting from the current flow along the conduction path into at least one physical variable and a measuring device for measuring the physical variable. The current transducer device has a coil arrangement with at least one coil for simulating the magnetic field resulting from the current flow along the conduction path. There is also described a method for calibrating a corresponding current transducer and a computer program product for performing the calibration method.

4. 发明授权

US11435415B2 Magnetic sensor element and magnetic sensor device 有权
公开(公告)号：US11435415B2
公开(公告)日：2022-09-06
申请号：US16651900
申请日：2018-09-28
申请人： CITIZEN FINEDEVICE CO., LTD. , CITIZEN WATCH CO., LTD. , SHINSHU UNIVERSITY
发明人： Toshiya Kubo , Mitsunori Miyamoto , Toshiro Sato
IPC分类号： G01R33/032 , G01R15/24 , G02B6/024
摘要： To provide a magnetic sensor element and a magnetic sensor device that can be easily manufactured and can reduce a loss of light to the extent possible. The above-described problem is solved by a magnetic sensor element comprising a planar lightwave circuit (11) provided with a light branching part (12), an input optical fiber (19) and an output optical fiber (20) connected to the planar lightwave circuit (11), a metal magnetic body type light transmitting film (30) that is provided on one end surface of the planar lightwave circuit (11) and transmits light entered from the input optical fiber (19), and a reflecting film (40) that is provided on the metal magnetic body type light transmitting film (30) and reflects the transmitted light. The output optical fiber (20) is a polarization-plane maintaining optical fiber, and the input optical fiber (19) and the output optical fiber (20) are aligned and connected to the planar lightwave circuit (11).

5. 发明授权

US11333697B2 Three-dimensional surface potential distribution measurement system 有权
公开(公告)号：US11333697B2
公开(公告)日：2022-05-17
申请号：US16058475
申请日：2018-08-08
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION , THE UNIVERSITY OF TOKYO
发明人： Masaaki Furukawa , Tetsuo Yoshimitsu , Yuichi Tsuboi , Kunihiko Hidaka , Akiko Kumada , Hisatoshi Ikeda
IPC分类号： G01R29/14 , G01R29/08 , G01R31/34 , G01R15/24
摘要： A three-dimensional surface potential distribution measurement system for measuring a surface potential of a measurement object comprises: a laser light source; a Pockels crystal exhibiting Pockels effect in which a refractive index changes depending on potential difference between the first end surface and the second end surface; a mirror disposed so as to be attached stationarily to the second end surface of the Pockels crystal; a photodetector to detect a light intensity of the laser light corresponding to the potential difference of the Pockels crystal; a housing that holds those elements; a three-dimensional motion-driver capable of three-dimensionally moving the housing; and a driving controller that controls the three-dimensional motion-driver.

6. 发明授权

US11333688B2 Reflective current and magnetic sensors based on optical sensing with integrated temperature sensing 有权
公开(公告)号：US11333688B2
公开(公告)日：2022-05-17
申请号：US15435177
申请日：2017-02-16
申请人： Xiaotian Steve Yao
发明人： Xiaotian Steve Yao
IPC分类号： G01R15/24 , G01K11/32 , G01R19/00
摘要： Optical techniques and sensor devices for sensing or measuring electric currents and/or temperature based on photonic sensing techniques in optical reflection modes by using optical dielectric materials exhibiting Faraday effects are provided in various configurations. The disclosed optical sensing technology uses light to carry and transmit the current or temperature information obtained at the sensing location to a remote base station and this optical transmission allows remote sensing in various applications and provide a built-in temperature calibration mechanism to enhance the measurement accuracy in a range of different temperature conditions.

7. 发明申请

US20220099710A1 OPTICAL SENSOR SYSTEM HAVING A SEGMENTED MAGNETIC FLUX CONCENTRATOR AND METHODS OF USE THEREOF 有权
公开(公告)号：US20220099710A1
公开(公告)日：2022-03-31
申请号：US17487474
申请日：2021-09-28
申请人： Micatu Inc.
发明人： Anthony Fiorille , James Kennedy , Michael Oshetski
IPC分类号： G01R15/24 , G01R15/18 , G01R19/00
摘要： The present technology relates to a current sensing device utilizing a magnetic flux concentrator loop composed of segmented ferromagnetic components. The concentrator loop is designed to focus magnetic flux generated by a current carrying cable, wire, or conductor along the Faraday rotation axis of a magneto-optic sub-assembly. The segmented magnetic flux concentrator encompassing the current carrying cable is held close to a circumferential geometry about the cable, in order to maximize magnetic flux concentration on the magneto-optic sensor. The segmented design of the magnetic flux concentrator loop, combined with a clamping mechanism, allows for easy, straightforward attachment and detachment, during installation and removal or the current sensing device from the current carrying cable.

8. 发明授权

US11175315B2 Crossarm insulator pin auxiliary mounted passive all fiber electro-optical current sensor 有权
公开(公告)号：US11175315B2
公开(公告)日：2021-11-16
申请号：US17000303
申请日：2020-08-22
申请人： Adam Zbinden
发明人： Adam Zbinden
IPC分类号： G01R15/24 , G02B6/36 , G01D5/353
摘要： A device for installing an all fiber optoelectrical transducer on the base of a pin insulator column, such that the device mounts to the insulator pin column in a bushing style of concentric attachment and enables retrofits of said device to existing transmission & distribution bushing insulator equipment. A rigid and solid mechanical support region contains a hollow bushing attachment point at a center location, and radiates outward and bonds solidly and statically to a hollow toroidal conduit, which houses optical wave guides, terminating at auxiliary connection ports, located on the exterior of the hollow toroidal conduit region, while hollow conduit support arms extend from the exterior conduit ring to a power conductor region, and integrate with optical connection ports located on static support stands, where the optical ports interface with a detachable and flexible fiber loop transducer, which surrounds an energized power conductor.

9. 发明授权

US11143717B2 Multi-phase sensor module, systems and methods 有权
公开(公告)号：US11143717B2
公开(公告)日：2021-10-12
申请号：US16500368
申请日：2018-04-05
申请人： Synaptec Limited
发明人： Neil Gordon , Philip Orr , Pawel Niewczas
IPC分类号： G01R31/58 , G01R15/18 , G01R15/24
摘要： The invention enables the measurement of the voltage between phases (phase-to-phase voltages) of a multi-phase power cable, e.g. a three-phase power cable, such as may be used in subsea or subterranean environments for electrical power transfer. The invention does not require a power supply at the measurement location, and relies solely on optical fibres (typically present in such cables) to carry light to and from the sensors. Fibre Bragg grating (FBG) based sensors sample the electric field between conductors and convert to a strain on the fibre, as a result of which certain wavelengths of the reflected light are modulated by the instantaneous magnitude of the phase-to-phase voltages to be measured. A sensor module embodying the invention includes a spacer which holds the conductors in a predetermined geometry and locates the FBG sensors between pairs of conductors on which the phase-to-phase voltage measurements are to be performed. At an end of the cable, an interrogation system can extract and interpret the modulation of these wavelengths to infer the measured values of voltage. The invention may be incorporated into a repair splice for retrofitting purposes, and may also incorporate FBG-based current sensors to simultaneously measure current in the conductors.

10. 发明申请

US20210285987A1 REFLECTIVE CURRENT AND MAGNETIC SENSORS BASED ON OPTICAL SENSING WITH INTEGRATED TEMPERATURE SENSING 有权
公开(公告)号：US20210285987A1
公开(公告)日：2021-09-16
申请号：US17336278
申请日：2021-06-01
申请人： Xiaotian Steve Yao
发明人： Xiaotian Steve Yao
IPC分类号： G01R15/24 , G01K11/32 , G01R19/00
摘要： Optical techniques and sensor devices for sensing or measuring electric currents and/or temperature based on photonic sensing techniques in optical reflection modes by using optical dielectric materials exhibiting Faraday effects are provided in various configurations. The disclosed optical sensing technology uses light to carry and transmit the current or temperature information obtained at the sensing location to a remote base station and this optical transmission allows remote sensing in various applications and provide a built-in temperature calibration mechanism to enhance the measurement accuracy in a range of different temperature conditions.

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