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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9029. Отображено 100.
05-01-2012 дата публикации

Hall sensor

Номер: US20120001280A1
Автор: Takaaki Hioka, Toshihiko Omi
Принадлежит: Seiko Instruments Inc

Provided is a highly-sensitive Hall element capable of eliminating an offset voltage without increasing the chip size. The Hall element includes: a Hall sensing portion having a shape of a cross and four convex portions; Hall voltage output terminals which are arranged at the centers of the front edges of the four convex portions, respectively; and control current input terminals which are arranged on side surfaces of each of the convex portions independently of the Hall voltage output terminals. In this case, the Hall voltage output terminal has a small width and the control current input terminal has a large width.

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Номер записи: 1
30-05-2017 дата публикации

Оптический измеритель переменного тока в высоковольтных сетях

Номер: RU0000171401U1
Автор: Алик Михайлович Ковалинский, Анатолий Иванович Пеньковский, Антон Андреевич Игнатьев, Валерий Игоревич Верещагин, Владимир Алексеевич Малыгин, Михаил Иванович Филатов, Светлана Анатольевна Кириллова, Федор Моисеевич Броун
Принадлежит: Акционерное общество "Швабе - Технологическая лаборатория"

Полезная модель относится к оптическому приборостроению, в частности к поляризационным приборам, в которых используется эффект Фарадея. Полезная модель будет использоваться в высоковольтных сетях, например на цифровых подстанциях и других электроустановках.Предлагаемое устройство содержит источник света и установленные последовательно по ходу лучей света многомодовое оптическое волокно, коллиматор, первый поляризатор, активный элемент ячейки Фарадея, выполненный в виде четырехугольной стеклянной призмы, находящейся в продольном магнитном поле проводника с током высоковольтной сети, второй поляризатор, плоскость пропускания которого составляет угол ±45° с плоскостью пропускания первого поляризатора, приемное устройство в виде собирающей линзы, второго оптического многомодового волокна, фотоприемника, и блок преобразования сигналов.Фрагмент проводника высоковольтной сети выполнен в виде плоской шины и имеет форму скобы, охватывающей активный элемент ячейки Фарадея.Техническим результатом при реализации заявленного оптического измерителя переменного тока является максимальная чувствительность и точность измерения тока, протекаемого по шине. 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 171 401 U1 (51) МПК G01R 15/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016147116, 30.11.2016 (24) Дата начала отсчета срока действия патента: 30.11.2016 30.05.2017 Приоритет(ы): (22) Дата подачи заявки: 30.11.2016 Адрес для переписки: 420075, Рес. Татарстан, г. Казань, ул. Липатова, 37, Акционерное общество "Швабе Технологическая лаборатория" (73) Патентообладатель(и): Акционерное общество "Швабе Технологическая лаборатория" (RU) (56) Список документов, цитированных в отчете о поиске: RU 131197, 10.08.2013. RU 149253 U1, 27.12.2014. US 3324393 A1, 06.06.1967. US 9134344 B2, 15.09.2015. U 1 1 7 1 4 0 1 R U (57) Формула полезной модели Оптический измеритель переменного тока в высоковольтных ...

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Номер записи: 2
12-01-2012 дата публикации

Fiber current sensor with reduced temperature sensitivity

Номер: US20120007584A1
Автор: Glen A. Sanders
Принадлежит: Honeywell International Inc

A sensor head assembly is provided, comprising a quarter wave device having shape-induced-birefringence and a sensing coil coupled to the quarter wave device and operable to wind around a current conductor. The quarter wave device converts linearly polarized light from a polarization maintaining fiber to circularly polarized light.

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Номер записи: 3
09-02-2012 дата публикации

Current sensor structure

Номер: US20120032667A1
Автор: Akinori Sakamoto, Yasunori KAWAGUCHI
Принадлежит: Yazaki Corp

A current sensor structure includes a substantially ring-shaped magnetic core comprising layers of magnetic plates to be accommodated in an insulating case and secured to the case via a molding compound. Projections protruding in the magnetic plate's thickness direction are provided either on a front-side wall portion of the case in the thickness direction or on a surface of the magnetic core in the thickness direction. By virtue of, the surface of the magnetic core is supported by the front-side wall portion via the projections, leaving a gap between this surface and the wall portion to the same height as that of the projections. The gap is filled with the molding compound. Dilative and contractive deformation of the case in the direction orthogonal to the thickness direction is absorbed by the molding compound in the gap to prevent the stress from acting upon the magnetic core.

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Номер записи: 4
15-03-2012 дата публикации

Magnetic balance type current sensor

Номер: US20120062224A1
Автор: Akira Takahashi, Hideharu Matsuo, Hidekazu Kobayashi, Kenji Ichinohe, Masahiro Iizuka, Masamichi Saito, Naoki Sakatsume, Shigenobu Miyajima, Tatsuya Kogure, Tsuyoshi Nojima, Yoshihiro Nishiyama, Yosuke Ide
Принадлежит: Alps Green Devices Co Ltd

A magnetic balance type current sensor includes a magnetoresistance effect element whose resistance value changes owing to the application of an induction magnetic field from a current to be measured; a feedback coil disposed in the vicinity of the magnetoresistance effect element and generating a cancelling magnetic field cancelling out the induction magnetic field; a magnetic field detection bridge circuit including two outputs causing a voltage difference corresponding to the induction magnetic field to occur; and a magnetic shield attenuating the induction magnetic field and enhancing the cancelling magnetic field, wherein, on the basis of the current flowing through the feedback coil at the time of an equilibrium state in which the induction magnetic field and the cancelling magnetic field are cancelled out, the current to be measured is measured, wherein the feedback coil, the magnetic shield, and the magnetic field detection bridge circuit are formed on a same substrate.

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Номер записи: 5
24-05-2012 дата публикации

Current Sensor

Номер: US20120126805A1
Автор: Udo Ausserlechner, Wolfgang Scherr
Принадлежит: INFINEON TECHNOLOGIES AG

Embodiments of the invention provide a current sensor including a conductive element and at least two magnetic field sensors. The conductive element includes at least three terminal areas and a common conductive area, wherein each of the at least three terminal areas is connected to the common conductive area to guide a current applied to the respective terminal area into the common conductive area. The at least two magnetic field sensors are arranged at different geometric positions adjacent to the common conductive area, wherein each of the at least two magnetic field sensors is configured to sense a magnetic field component of each current flowing into the common conductive area to provide a sensor signal based on the sensed magnetic field component.

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Номер записи: 6
28-06-2012 дата публикации

Electric field/magnetic field sensors and methods of fabricating the same

Номер: US20120164321A1
Автор: Keishi Oohashi, Masafumi Nakada, Mizuki Iwanami, Norio Masuda
Принадлежит: NEC Corp

An electric field sensor is obtained by directly forming an electrooptical film of Fabry-Perot resonator structure on a polished surface at a tip of an optical fiber by an aerosol deposition method.

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Номер записи: 7
12-07-2012 дата публикации

Current passage indicator

Номер: US20120176121A1
Автор: Graham Earp, Richard Ash
Принадлежит: EA Technology Ltd

A fault current passage indicator ( 100 ) is fitted around the earth conductor ( 11 ) of a pole ( 10 ) supporting a section of an overhead electricity distribution network. This is achieved by means of a clip ( 110 ) adapted to provide a loop of ferromagnetic material enclosing the earth conductor ( 11 ). The indicator 100 is operable to detect transient earth currents flowing in the earth conductor ( 11 ). This is achieved by the provision of a sensor coil ( 101 ) is fitted around the clip ( 110 ) such that a portion of the clip ( 110 ) passes through the core of the sensor coil ( 101 ). Detected incidents of transient earth currents are recorded by the indicator ( 100 ) and data relating thereto can be retrieved by use of a suitable reader device ( 200 ). The indicator ( 100 ) is further adapted to scavenge power for operation from either transient earth currents or the reader device ( 200 ).

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Номер записи: 8
19-07-2012 дата публикации

enclosure for a conductor of electricity, the enclosure being provided with current sensors

Номер: US20120182708A1
Автор: Guillaume Granelli, Patrice Juge
Принадлежит: Alstom Technology AG

A characteristic enclosure, configured to surround a linear conductor, includes at least one internal cavity for receiving at least one fiber optic sensor or current transformer sensor wound about the enclosure and giving a measurement of current. The cavity is closed except at openings of small size in the outer wall through which the sensors are inserted, or are removed to replace them, and through which they are connected to a measuring apparatus. The enclosure includes grooves arranged on its surface or in separate tubes for guiding and maintaining loops of the sensors. Advantageously, one of the walls of the enclosure extends the walls of the adjacent enclosures for a regular flow of current induced along the enclosure.

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Номер записи: 9
18-10-2012 дата публикации

Current sensor

Номер: US20120263985A1
Автор: Hiroyuki Hebiguchi, Manabu Tamura, Masatoshi Murata, Shinji Mitsuya
Принадлежит: Alps Green Devices Co Ltd

A current sensor includes a magnetic balance sensor and a switching circuit. The magnetic balance sensor includes a feedback coil which is disposed near a magnetic sensor element varying in characteristics due to application of an induction field caused by measurement current and which produces a canceling magnetic field canceling the induction field. The switching circuit switches between magnetic proportional detection and magnetic balance detection. The magnetic proportional detection is configured to output a voltage difference as a sensor output. The magnetic balance detection is configured to output, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized by the voltage difference.

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Номер записи: 10
01-11-2012 дата публикации

System for fiber dc magneto-optic detection and method thereof

Номер: US20120274321A1
Автор: Haijun Yuan
Принадлежит: Individual

A system for fiber DC magneto-optic detection and method thereof are provided. The system comprises a power supply and signal processing module (400), an optical fiber device (200), a magneto-optic probe (100) and a reference device (300). The reference device (300) is mounted in the system, and the measured signal can be corrected via a reference magnetic field pulse signal generated by the reference device (300) so as to eliminate the influence that the environmental factors caused on the measurement, and to obtain accurate measurement data, thus improving measurement accuracy of the system.

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Номер записи: 11
08-11-2012 дата публикации

Power receptacle current displaying and alert device for detecting current state of power receptacle and receptacle having the saem

Номер: US20120280822A1
Автор: Kuei-wei Kuo
Принадлежит: Individual

A power receptacle current displaying and alert device comprises a panel; a current sensor being a C silicone steel sheet; a coil winding around the C silicone steel sheet for sensing the current of the power receptacle; a current detector being a Hall IC; the Hall IC being installed at a notch of the C silicone steel sheet so as to detect the current flow in the power wire of the power receptacle; the Hall IC detecting the current electromagnetically; the current detector including an integrated circuit; the integrated circuit can transfer the value about the current state of the power receptacle for displaying; and a display for displaying a current state from the integrated circuit; a sound alarm, a light alarm and a transmitter for alerting the statues of the current of the power receptacle to users. A power receptacle using the device is also provided.

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Номер записи: 12
06-12-2012 дата публикации

Device for measuring a current flowing through an electric cable

Номер: US20120306486A1
Автор: Peter Krummenacher, Robert Racz
Принадлежит: MELEXIS TECHNOLOGIES NV

A device for measuring a current flowing through an electric cable comprises a printed circuit board, a magnetic field sensor and a ferromagnetic component. The ferromagnetic component comprises two tongues whose front faces are disposed opposite of each other and are separated by an air gap and further comprises at least two feet, with the tongues and/or the feet being bent off. The cable is guidable through an opening which is enclosed by the ferromagnetic component. The ferromagnetic component and the magnetic field sensor are mounted on a surface of the printed circuit board. The magnetic field sensor is sensitive to a magnetic field extending parallel to the surface of the printed circuit board. The tongues of the ferromagnetic component extend parallel to the surface of the printed circuit board ( 2 ).

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Номер записи: 13
06-12-2012 дата публикации

Magnetic balance type current sensor

Номер: US20120306491A1
Автор: Akira Takahashi, Kenichi ICHINOHE, Masamichi Saito, Yosuke Ide
Принадлежит: Alps Green Devices Co Ltd

A magnetic balance type current sensor of the present invention includes a magnetic field detection bridge circuit including four magnetoresistance effect elements whose resistance values change owing to application of an induction magnetic field from a current to be measured. Each of the four magnetoresistance effect elements includes a ferromagnetic fixed layer formed by causing a first ferromagnetic film and a second ferromagnetic film to be antiferromagnetically coupled to each other via an antiparallel coupling film, a non-magnetic intermediate layer, and a soft magnetic free layer. The first and second ferromagnetic films are approximately equal in Curie temperature to each other, a difference in magnetization amount therebetween is substantially zero, and the magnetization directions of the ferromagnetic fixed layers of three magnetoresistance effect elements are different by 180 degrees from the magnetization direction of the ferromagnetic fixed layer of the remaining one magnetoresistance effect element.

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Номер записи: 14
20-12-2012 дата публикации

Calibration of non-contact voltage sensors

Номер: US20120319675A1
Автор: Alexandre Peixoto Ferreira, Sani R. Nassif, Thomas Walter Keller, Wael El-Essawy
Принадлежит: International Business Machines Corp

Calibration of a non-contact voltage sensor provides improved accuracy for measuring voltage on a conductor such as an AC branch circuit wire. In a calibration mode, a predetermined voltage is imposed on a first voltage sensing conductor integrated in the non-contact voltage sensor, while a voltage on a second voltage sensing conductor is measured using a circuit of predetermined input impedance. The capacitance between the wire and each of the voltage sensing conductors may be the same, so that in measurement mode, when the first and second voltage sensing conductors are coupled together, the effective series capacitance provided in combination with the predetermined input impedance is four times as great. The results of the voltage measurement made in the calibration mode can thereby be used to adjust subsequent voltage measurements made in measurement mode with the first and second voltage sensing conductors combined in parallel.

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Номер записи: 15
10-01-2013 дата публикации

Electrical current sensor device

Номер: US20130008022A1
Автор: Koyu Yamanoi, Ming Gao Yao, Wei Xiong
Принадлежит: SAE Magnetics HK Ltd

An electrical current sensor device includes a first printed circuit board assembly, a second printed circuit board assembly positioned opposite to the first printed circuit board assembly, and a holder holding the first and second printed circuit board assemblies and providing a passage to allow an electrical conductor to pass through. The first printed circuit board assembly includes a first sensing circuit having a first element pair that includes two magnetoresistive elements with a first pinning direction, the second printed circuit board assembly comprises a second sensing circuit with a second element pair that includes having two magnetoresistive elements with a second pinning direction that is opposite to the first pinning direction, and the first and second pinning directions are perpendicular to a current direction of a current passing through the electrical conductor, the first sensing circuit electrically connects with the second sensing circuit to form a Wheatstone bridge circuit.

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Номер записи: 16
17-01-2013 дата публикации

Current detection apparatus

Номер: US20130015842A1
Автор: Yasunori KAWAGUCHI
Принадлежит: Yazaki Corp

A current detection apparatus includes two magnetic detectors that are arranged oppositely on a front surface and a back surface of a board which is located above a current path in order to detect a strength of a magnetic field, an electromagnetic shielding frame member that is mounted on the current path so that the two magnetic detectors and a part of the current path are accommodated inside the electromagnetic shielding frame member, and a control circuit that determines whether a failure which occurs in either of the two magnetic detectors from a difference between magnetic fields detected by the two magnetic detectors, respectively. Sensitivities of the two magnetic detectors are made adjusted so that current values outputted from the two magnetic detectors depending on detected magnetic fields are identical to each other in a normal state.

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Номер записи: 17
31-01-2013 дата публикации

Thin-wafer current sensors

Номер: US20130029432A1
Автор: Mario Motz, Udo Ausserlechner
Принадлежит: INFINEON TECHNOLOGIES AG

Embodiments relate to IC current sensors fabricated using thin-wafer manufacturing technologies. Such technologies can include processing in which dicing before grinding (DBG) is utilized, which can improve reliability and minimize stress effects. While embodiments utilize face-up mounting, face-down mounting is made possible in other embodiments by via through-contacts. IC current sensor embodiments can present many advantages while minimizing drawbacks often associated with conventional IC current sensors.

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Номер записи: 18
28-02-2013 дата публикации

Semiconductor Chip Package and Method

Номер: US20130049746A1
Автор: Stefan Landau, Udo Ausserlechner, Volker Strutz
Принадлежит: INFINEON TECHNOLOGIES AG

A semiconductor chip package and a method to manufacture a semiconductor chip package are disclosed. An embodiment of the present invention comprises a substrate and a semiconductor chip disposed on the substrate and laterally surrounded by a packaging material. The package further comprises a current rail adjacent the semiconductor chip, the current rail isolated from the semiconductor chip by an isolation layer, a first external pad, and a via contact contacting the current rail with the first external pad.

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Номер записи: 19
07-03-2013 дата публикации

Current sensor arrangement

Номер: US20130057272A1
Автор: Friedrich Lenhard, Sebastian Kudimow
Принадлежит: Vacuumschmelze GmbH and Co KG

Current sensor comprising a primary conductor for conducting a current that is to be measured, at least two magnetic field probes for measuring magnetic fields, and a magnetic core, which has a closed ring structure that encloses the primary conductor and at least two recesses that in each case receive one of the magnetic field probes.

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Номер записи: 20
07-03-2013 дата публикации

Current sensor

Номер: US20130057275A1
Автор: Hiroyuki Hebiguchi, Manabu Tamura, Masatoshi Nomura
Принадлежит: Alps Green Devices Co Ltd

A current sensor includes a magnetic balance sensor including a feedback coil that is disposed in the vicinity of a magnetic sensor element whose characteristics are changed by an inducted magnetic field from a current to be measured and generates a cancellation magnetic field for offsetting the inducted magnetic field, a shunt resistant that is connected in series with a current line for circulating the current to be measured, and a switch circuit that switches to magnetic balance detection at the time of a small current and switches to shunt resistance detection at the time of a large current.

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Номер записи: 21
14-03-2013 дата публикации

Conductor to which current detection head is fixed, and current detection head used in manufacture of same

Номер: US20130063128A1
Автор: Yusuke Seo
Принадлежит: Toyota Motor Corp

Provided is a technique for mass-producing a conductor to which is fixed a current detection head that detects the value of current flowing in the conductor, and in which the relationship between the detection value and the current value is stabilized. The head comprises a lens, a magneto-optical element, a conductor, and a fixing member, and the lens, the magneto-optical element, and the conductor are respectively fixed to the fixing member. An optical system is formed using the current detection head such that light is guided through the lens to the magneto-optical element, and light affected by a magneto-optical effect due to the magneto-optical element is guided to the lens. All of the members contributing to current detection are fixed to the fixing member, and therefore the relative positional relationships of all the members contributing to current detection are uniquely determined, enabling conductors with little variation in current detection characteristics to be mass-produced. A shape for determining the positional relationship between the fixing member and the conductor may be formed therebetween in advance, and the positioned current detection head and conductor may be fixed to obtain the conductor.

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Номер записи: 22
04-04-2013 дата публикации

Hall-Effect Measurement Apparatus

Номер: US20130082694A1
Автор: Che-Hung Liu, Ming-Cheng Lin
Принадлежит: Taiwan Semiconductor Manufacturing Co TSMC Ltd

A Hall-Effect measure apparatus comprises a magnetic source, a wafer on a thermal chuck, a dc current source and a voltage meter. The magnetic source generates a magnetic field in a perpendicular position relative to the wafer. Furthermore, the magnetic field is targeted at a specific region of the wafer to be tested. By performing a Hall-Effect measurement and van der Pauw measurement, the carrier mobility of the specific region of the wafer can be calculated.

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Номер записи: 23
09-05-2013 дата публикации

Systems and methods for use in measuring current through a conductor

Номер: US20130116955A1
Автор: Craig Benjamin Williams
Принадлежит: Individual

Systems, methods and devices for use in measuring current through a conductor are provided. One example current device includes a first sensor configured to measure a first magnetic flux provided from a conductor and to generate a first signal proportional to the first magnetic flux, and a second sensor configured to measure a second magnetic flux provided from the conductor and to generate a second signal proportional to the second magnetic flux. The second sensor is spaced apart from the first sensor by a predetermined distance. The current device further includes a processor configured to determine, based on the first signal, the second signal and the predetermined distance, a radius between the conductor and at least one of the first sensor and the second sensor.

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Номер записи: 24
16-05-2013 дата публикации

Current detector

Номер: US20130119975A1
Автор: Hirokatsu Nakajima, Satoru Chaen
Принадлежит: Sumitomo Wiring Systems Ltd

A current detector includes an electronic circuit board on which a circuit for processing a detection signal of a Hall element disposed in a gap portion of a magnetic core is mounted, and a spring member such as a coil spring that is made of a conductor electrically connected to a ground pattern on the electronic circuit board, and that is supported on the electronic circuit board and is in contact with the magnetic core. The magnetic core, a busbar for current detection, and the electronic circuit board on which the Hall element is mounted are held in a fixed positional relationship by an insulating casing.

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Номер записи: 25
01-08-2013 дата публикации

Sensing fiber, coil of sensing fiber, and all-fiber current sensor

Номер: US20130195395A1
Автор: Yong Huang
Принадлежит: Individual

Embodiments of the present invention provide a sensing fiber, which includes a polarization-maintaining (PM) fiber being spun around a core thereof to have a first, a second, and a third sections, wherein the first section has an increasing rate of spin from a predetermined slow rate to a predetermined fast rate; the second section is spun at the predetermined fast rate; and the third section has a decreasing rate of spin from the predetermined fast rate to the predetermined slow rate. The first and third sections have a substantially same length and changes in rate of spin are substantially symmetric to each other. Embodiments of the present invention also provide a fiber coil made by the sensing fiber, with the first section and the third section being substantially overlapped along the coil, and provide an all-fiber current sensor employing the fiber coil.

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Номер записи: 26
05-09-2013 дата публикации

Method for measuring current in an electric network

Номер: US20130229173A1
Автор: Paul Bertrand
Принадлежит: SMARTFUTURE SAS

A method for measuring current in an electric network comprising at least one first electric line. The method includes fitting the first line with a circuit breaker having a protection coil and having a wall traversed by a magnetic field emitted by the protection coil; arranging on the wall of the circuit breaker a synchronous three-axis digital magnetometer on a semiconductor chip; by way of the digital magnetometer, measuring at least one component of a magnetic field emitted by the coil; and determining the value of a current traversing the electric line from the measured component.

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Номер записи: 27
12-09-2013 дата публикации

Integrated optical circuit and method for measuring current as well as sensor module and measuring device

Номер: US20130234698A1
Автор: Dorner Georg, Freude Wofgang, Koos Christian, Leuthold Juerg, Voigt Sven
Принадлежит: NORTHROP GRUMMAN LITEF GMBH

In an integrated optical circuit, light from a light source is polarized and coupled to a first and second strip waveguide. A waveguide coupling element couples the two optical signals from the two strip waveguides to different polarization modes of an optical fiber line. The optical fiber line is connected to a measuring head, which reflects the optical signal and in which a phase difference between the two optical partial signals is modulated in a magnetic field. In the waveguide coupling element, the reflected signal is split into two optical partial signals having the same polarization and the phase difference between the two partial signals is determined. A phase modulator device provides for closed-loop operation. Compared to fiber-optical concepts, the number of splices is reduced. 2. The integrated optical circuit according to claim 1 , characterized by a controllable phase modulator device claim 1 , which is suitable to impact a phase between the same polarization modes of the first and of the second optical signal.3. The integrated optical circuit according to claim 2 , characterized in that the phase modulator device comprises exactly one modulator unit claim 2 , which is assigned to one of the two strip waveguides.4. The integrated optical circuit according to claim 2 , characterized in that the phase modulator device comprises a modulator unit claim 2 , which acts on the first optical signals claim 2 , and a second modular unit claim 2 , which acts on the second optical signal.5. The integrated optical circuit according to claim 1 , characterized bya directional coupling element, which is suitable to couple an optical input signal at an input gate to the first and the second strip waveguide and to couple optical signals from the first and second strip waveguide to an output gate;a first optical signal path between the directional coupling element and the waveguide coupling element, comprising the first strip waveguide; anda second optical signal path ...

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Номер записи: 28
19-09-2013 дата публикации

CLOSED-LOOP CURRENT TRANSDUCER WITH SWITCHED MODE AMPLIFIER

Номер: US20130241534A1
Автор: Schaerrer Marc
Принадлежит: LEM INTELLECTUAL PROPERTY SA

A closed-loop current transducer for measuring a current (Ip) flowing in a primary conductor (), the transducer powered by series connected voltage supplies (V_H, V_L) and comprising a magnetic field detector (WS), a signal processing circuit including an amplifier circuit ( ) connected to the magnetic field detector, and a compensation winding (WS) connected to the amplifier circuit and configured to generate an opposing magnetic field seeking to cancel a magnetic field generated by the current flowing in the primary conductor. The amplifier circuit comprises a first switched mode power stage configured to drive the magnetic field generator, and a second switched mode power stage () configured to balance the currents of the voltage supplies. 122. A closed-loop current transducer system for measuring a current (Ip) flowing in a primary conductor , the system powered by series connected voltage supplies (V_H , V_L) and comprising a magnetic field detector , a signal processing circuit including an amplifier circuit connected to the magnetic field detector , and a compensation coil connected to the amplifier circuit and configured to generate an opposing magnetic field seeking to cancel a magnetic field generated by the current flowing in the primary conductor , characterised in that the amplifier circuit comprises a first switched mode power stage fed by the voltage supplies (V_H , V_L) and configured to drive the compensation coil and supply an output current (Is) for a measurement resistor (Rm) connected to a first reference voltage (Vref) , where the voltage across the measurement resistor provides an image of the current flowing in the primary conductor , and at least a second independently regulated switched mode power stage fed by the voltage supplies (V_H , V_L) with an output connected to a second reference voltage (Vref) through an inductor (L) and configured to output a balancing current (Ibal) , whereby the first and second reference voltages may be the ...

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Номер записи: 29
19-09-2013 дата публикации

Apparatus, Sensor Circuit, and Method for Operating an Apparatus or a Sensor Circuit

Номер: US20130241540A1
Автор: Christian Kolle, Mario Motz, Udo Ausserlechner
Принадлежит: INFINEON TECHNOLOGIES AG

A sensor system comprises a sensor element adapted to sense at least one physical quantity, wherein the sensor element is adapted to generate a sensor signal in response to the at least one physical quantity, an evaluation circuit adapted to detect a manipulation of the sensor system based on the sensor signal and stored reference values and to output an indication signal in response to a detected manipulation and a package, the package housing at least the sensor element and the evaluation circuit.

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Номер записи: 30
26-09-2013 дата публикации

Current sensor

Номер: US20130249531A1
Автор: Akira Takahashi, Kenji Ichinohe, Masahiro Iizuka, Masamichi Saito, Mitsuo ARATONO, Shigenobu Miyajima, Shinji Mitsuya, Yoshihiro Nishiyama, Yosuke Ide
Принадлежит: Alps Green Devices Co Ltd

A current sensor includes a magnetic sensor module including a plurality of magnetic sensor units connected in series. The magnetic sensor units each include a first magnetic sensor element and a second magnetic sensor element which have sensitivity axes oriented in opposite directions. A first terminal of the first magnetic sensor unit is connected to a first potential source. A third terminal of the first magnetic sensor unit is connected to a second potential source. A second terminal and a fourth terminal of the last magnetic sensor unit are connected to constitute a sensor output terminal. The first terminal of each of the magnetic sensor units excluding the first magnetic sensor unit is connected to the second terminal of the next magnetic sensor unit and the third terminal thereof is connected to the fourth terminal of the next magnetic sensor unit.

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Номер записи: 31
10-10-2013 дата публикации

CURRENT SENSOR

Номер: US20130265040A1
Автор: Aratono Mitsuo, ICHINOHE Kenji, IDE Yosuke, IIZUKA Masahiro, NISHIYAMA Yoshihiro, SAITO Masamichi, Takahashi Akira
Принадлежит:

A current sensor includes a substrate, a conductive body being provided above the substrate and extending in one direction, and magnetoresistance effect elements being provided between the substrate and the conductive body and outputting output signals owing to an induction magnetic field from a current to be measured being conducted through the conductive body, wherein each of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic film and the second ferromagnetic film are approximately equal, and a difference between the magnetization amounts thereof is substantially zero. 1. A current sensor comprising:a substrate; a conductive body being provided above the substrate and extending in one direction; and at least two magnetoresistance effect elements being arranged in parallel between the substrate and the conductive body and outputting an output signal owing to an induction magnetic field from a current to be measured being conducted through the conductive body, whereineach of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic ...

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Номер записи: 32
17-10-2013 дата публикации

Isolated Voltage Transducer

Номер: US20130271125A1
Автор: Insik Jin, James G. Deak, Songsheng Xue, Weifeng Shen, Xiaofeng Lei
Принадлежит: JIANG SU MULTI DIMENSION Tech CO Ltd

A transducer is disclosed for detecting the AC and DC voltage difference between two nodes in an electrical circuit and electronically transmitting the measured voltage difference to an electrical system that is electrically isolated from the common mode potential of the two nodes. The voltage drop between two points in a circuit under test is determined by detecting the current flowing through a resistive shunt coil connected in parallel to the test points. Current through the resistive shunt coil is linearly proportional to the voltage difference between the test points, and it is detected by using a magnetic sensor that is separated from the shunt coil by an insulating dielectric barrier. The transducer can be packaged in a standard integrated circuit package in order to provide a small and low cost voltage transducer for test, measurement, control, and signal-isolation applications.

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Номер записи: 33
24-10-2013 дата публикации

Arrangements For An Integrated Sensor

Номер: US20130277782A1
Автор: Michael C. Doogue, Vijay Mangtani, William P. Taylor
Принадлежит: Allegro Microsystems LLC

An integrated circuit can have a first substrate supporting a magnetic field sensing element and a second substrate supporting another magnetic field sensing element. The first and second substrates can be arranged in a variety of configurations. Another integrated circuit can have a first magnetic field sensing element and second different magnetic field sensing element disposed on surfaces thereof.

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Номер записи: 34
24-10-2013 дата публикации

DIGITAL CLOSED-LOOP FIBER OPTICAL CURRENT SENSOR

Номер: US20130278241A1
Автор: Chen Shuo, Chen Xiangxun, Guo Jianbo, Jing Ping, Liu Zhanyuan, Yin Shujie
Принадлежит: CHINA ELECTRIC POWER RESEARCH INSTITUTE

This present inversion provides a digital closed-loop fiber optical current sensor. The modulation signal of the optical wave “phase modulator” of the fiber optical current sensor system is modulation square wave, signal processing system extracts any harmonic wave of the photoelectric converter output modulation square waves, and extracts the measured current information from it. The preamplifier of signal processing system is transimpedance amplifier TIA, the bandwidth is extracted 1/650 instantaneous amplitude square wave directly from the modulation square wave (existing), thus the thermal noise of the preamplifier output and shot noise level is reduced to the existing technology of below 1/650; the current-voltage gain of transimpedance amplifier TIA does not depend on the feedback network resistance, thus it can have high current-voltage conversion gain and use low resistance in the feedback network TIA at the same time. So it can reduce resistance thermal noise to negligible that is accounted for a large proportion of TIA output noise. 1. A digital closed-loop fiber optical current sensor , which is characterized in that: the modulation signal of the optical wave “phase modulator” of said the fiber optical current sensor system is modulation square wave , signal processing system extracts only any harmonic wave of the photoelectric converter output modulation square waves , and extracts the measured current information from it.2. A digital closed-loop fiber optical current sensor said according to claim 1 , the optical path consists of:a broadband light source, the output light of the source passes through the polarizer and becomes a low coherence length of the linear polarized light;an integrated waveguide type optical phase modulator, its function is to adds positive, negative 90° bias phase to the existing linear polarized light, and the its period is set already, and the feedback phase opposite to existing light wave phase;at least one polarization- ...

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Номер записи: 35
07-11-2013 дата публикации

OPTICAL SENSOR FOR NON-CONTACT VOLTAGE MEASUREMENT

Номер: US20130293218A1
Автор: LEVESQUE Marc
Принадлежит: Institut National D'Optique

A voltage sensor for obtaining a light signal representative of an AC voltage in a live electrical wire having a surrounding electrical field, comprising: a conducting device adapted to be placed in the surrounding electrical field and in galvanic isolation to the live electrical wire for causing a movement of charges and extracting a current from the movement of charges; a micro-light source for emitting a light signal, the micro-light source being operatively connected to the conducting device for receiving the extracted current and being directly powered by the extracted current, an intensity of the light signal being related to a value of the AC voltage in the electrical wire; a light guide, operatively coupled to the micro-light source, for receiving and propagating the light signal over a distance. 1. A voltage sensor for obtaining a light signal representative of an AC voltage in a live electrical wire having a surrounding electrical field , comprising:a conducting device adapted to be placed in said surrounding electrical field and in galvanic isolation to said live electrical wire for causing a movement of charges and extracting a current from said movement of charges;a micro-light source for emitting a light signal, said micro-light source being operatively connected to said conducting device for receiving said extracted current and being directly powered by said extracted current, an intensity of said light signal being related to a value of said AC voltage in said electrical wire;a light guide, operatively coupled to said micro-light source, for receiving and propagating said light signal over a distance.2. The voltage sensor as claimed in claim 1 , wherein said conducting device is a conductive plate and wherein said conductive plate is operatively connected to an earth ground through said micro-light source.3. The voltage sensor as claimed in claim 1 , wherein said conducting device is two conductive plates and wherein said conductive plates are in ...

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Номер записи: 36
19-12-2013 дата публикации

Current sensor

Номер: US20130335076A1
Автор: Akinori Sakamoto, Shidi PENG
Принадлежит: Yazaki Corp

A current sensor to be provided in a current path through which current flows includes a housing, a substrate accommodated in the housing, a plurality of magnetic detection elements mounted on the substrate, and a pair of shields respectively disposed on both sides of each magnetic detection element. The shields are accommodated in the housing so as to surround the current path on both sides of the current path and the shields are held so that respective end portions of the shields have a predetermined interval. The magnetic detection elements and the shields are disposed in each phase current path for three-phase AC.

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Номер записи: 37
30-01-2014 дата публикации

AMPLIFIER CIRCUITS AND METHODS

Номер: US20140028286A1
Автор: Hu Jinxi, Huang Xujiang, Wang Jiabin
Принадлежит:

A chopper amplifier circuit for sensing Hall voltage with reduced offsets includes a Hall sampling circuit with a first switching circuit for selectively coupling each of four nodes of a Hall plate to either a power source or a ground terminal. The circuit also includes a differential amplifier and a second switching circuit configured for selectively coupling each of the four nodes to inputs of the differential amplifier. A Hall voltage signal retaining circuit includes two groups of four storage devices and a second group of four storage devices. A third switching circuit is configured for outputs of the differential amplifier to selected ones of the storage devices. A fourth switching circuit is configured for selectively coupling the storage devices outputs of the chopper amplifier circuit. 1. A chopper amplifier circuit for sensing Hall voltage , the amplifier circuit comprising:a Hall sampling circuit, including a first switching circuit for selectively coupling each of four nodes of a Hall plate to either a power source or a ground terminal;a differential amplifier;a second switching circuit configured for selectively coupling each of the four nodes of the plate to inputs of the differential amplifier;a Hall voltage signal retaining circuit, including a first group of four storage devices and a second group of four storage devices;a third switching circuit configured for storing a first output of the differential amplifier to one of the first group of four storage devices and for storing a second output of the differential amplifier to one of the second group of four storage devices; anda fourth switching circuit configured for selectively coupling the first group of four storage devices to a first output of the chopper amplifier circuit and for coupling the second group of four storage devices to a first output of the chopper amplifier circuit.2. The circuit of claim 1 , wherein the switching circuits are configured for:measuring and storing first voltage ...

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Номер записи: 38
30-01-2014 дата публикации

Circuits and Techniques for Adjusting a Sensitivity of a Closed-Loop Current Sensor

Номер: US20140028290A1
Автор: Craig S. Petrie
Принадлежит: Allegro Microsystems LLC

A closed loop current sensor has a primary conductor and a plurality of secondary conductors. Selected ones of the plurality of secondary conductors are selected and driven in a feedback loop.

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Номер записи: 39
20-02-2014 дата публикации

AC OR DC POWER TRANSMISSION SYSTEM AND A METHOD OF MEASURING A VOLTAGE

Номер: US20140049249A1
Автор: Jespersen Per
Принадлежит: Powersense A/S

The present invention relates to an AC or DC power transmission system. The system comprises a first electrical conductor, a second electrical conductor and an insulating space there between. The system further comprises an electric field measurement device comprising the following components being mounted in optical continuation: a first optical fibre being connected to a light source, a first optical lens, a circular polarization filter, a crystal rod having electro-optical properties, a linear polarization filter, a second optical lens, and a second optical fibre being connected to a light detection unit. The electric field measurement device is located adjacent the first electrical conductor and defines a first minimum distance between the crystal rod and the first electrical conductor and a second minimum distance between the crystal rod and the second electrical conductor. The second minimum distance is at least 10 times larger than the first minimum distance. 116-. (canceled)17. An AC or DC power transmission system comprising a first electrical conductor , a second electrical conductor and an insulating space between said first electrical conductor and said second electrical conductor , said power transmission system further comprising an electric field measurement device , said electric field measurement device comprising:a housing made of dielectric material and defining a first open end and a second open end opposite said first open end;a first optical fiber configured for connection to a light source;a first optical lens mounted in said housing at said first open end and in optical continuation with said first optical fiber;a circular polarization filter mounted in said housing in optical continuation with said first optical lens;a crystal rod having electro-optical properties received in and encapsulated within said housing in optical continuation with said circular polarization filter;a linear polarization filter mounted in said housing in optical ...

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Номер записи: 40
27-03-2014 дата публикации

Current detection device

Номер: US20140084914A1
Автор: Hirokatsu Nakajima, Kouji Nishi, Satoru Chaen, Takashi Misaki
Принадлежит: AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd, Sumitomo Wiring Systems Ltd

In a current detection device for detecting current in a busbar, a reduction in device size may be realized by employing a small magnetic core. The prevention or reduction of excessive heat generation by the busbar, the facilitation of the attachment task, and a reduction in the amount of space required for the attachment task may also be realized. The folded-back busbar is U-shaped with a bar-shaped penetration portion that passes through a hole portion of a magnetic core, two bar-shaped extension portions, and two flat plate-shaped penetration portions. The width of each terminal portion is larger than the widths of the penetration portion and the extension portions. An insulating casing supports the magnetic core, a Hall element, and the folded-back busbar in a fixed positional relationship, with the two terminal portions being exposed to the outside.

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Номер записи: 41
07-01-2016 дата публикации

ARRANGEMENT FOR MEASURING ELECTRIC CURRENT IN AN INDIVIDUAL ELECTRODE IN AN ELECTROLYSIS SYSTEM

Номер: US20160002801A1
Автор: Barker Michael H., GRANT Duncan, NORDLUND Lauri, RANTALA Ari, VIRTANEN Henri K.
Принадлежит:

The invention relates to a method and current measuring arrangement for measuring electric current flowing in an individual electrode in an electrolysis system. The electrolysis system comprises a plurality of interleaved electrodes (), cathodes () and anodes (), arranged in an electrolysis cell () and immersed in electrolyte, said electrolysis system having a busbar () disposed on a separating cell wall () between each of the two adjacent cells to conduct electric current to the electrodes via a contact point () between the busbar and a hanger bar () of the electrode, and the current sensing arrangement comprises a magnetic field sensing means () for measuring the magnetic field induced by said current. The magnetic field sensing means () are arranged to sense the magnetic field substantially at the level of the contact point (). 1. A method of measuring electric current flowing in an individual electrode in an electrolysis system com-prising a plurality of interleaved electrodes , cathodes and anodes , arranged in an electrolysis cell and immersed in electrolyte , said electrolysis system having a busbar disposed on a separating cell wall between each of the two adjacent cells to conduct electric current to the electrodes via a contact point between the busbar and a hanger bar of the electrode , and in which method the electric current of each electrode is measured by measuring the magnetic field induced by said current , characterized in that the magnetic field is sensed substantially at the level of the contact point.2. The method according to claim 1 , characterized in that the magnetic field is sensed with a magnetic circuit being arranged to encircle the contact point substantially in a horizontal plane at the level of the contact point.3. The method according to claim 2 , characterized in that the magnetic circuit is an open loop current sensor.4. The method according to claim 2 , characterized in that the magnetic circuit is a closed loop current sensor.5. ...

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Номер записи: 42
07-01-2016 дата публикации

Measurement of electric current in an individual electrode in an electrolysis system

Номер: US20160002802A1
Автор: Ari Rantala, Duncan Grant, Henri K. Virtanen, Lauri Nordlund, Michael H. Barker
Принадлежит: Outotec Finland Oy

The invention relates to a method and current measuring arrangement for measuring electric current flowing in an individual electrode in an electrolysis system. The electrolysis system comprises a plurality of interleaved electrodes ( 1, 2 ), cathodes ( 1 ) and anodes ( 2 ), arranged in an electrolysis cell ( 3 ) and immersed in electrolyte, said electrolysis system having a busbar arrangement ( 4 ) disposed on a separating cell wall ( 5 ) between each of the two adjacent cells. The busbar arrangement comprises an equaliser busbar ( 6, 7, 8, 9, 10, 11 ) to electrically connect anodes in one cell to cathodes in a next cell providing the current with multiple electrical pathways between electrodes, said electrical connection being formed by contact points ( 12 ) between the equaliser busbar ( 6, 7, 8, 9, 10, 11 ) and hanger bars ( 13 ) of the electrodes. The electric current in the equaliser busbar ( 6, 7, 8, 9, 10, 11 ) is measured by magnetic field sensing means ( 15, 16 ) arranged at measuring points ( 14 ) located between each pair of the adjacently neighboring contact points ( 12 ).

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Номер записи: 43
05-01-2017 дата публикации

CLAMP-TYPE AMMETER

Номер: US20170003320A1
Автор: Tsujimoto Hiroaki
Принадлежит: OSAKA CITY UNIVERSITY

This clamp-type ammeter has a flexible substrate of which an inner wall is configured to be able to deform into a substantially cylindrical shape. The clamp-type ammeter has a plurality of magnetic sensor elements disposed at the inner wall of the flexible substrate. The clamp-type ammeter has a tube of which one end is connected to the flexible substrate. The clamp-type ammeter has an operation unit that is connected to the other end of the tube and that can operate the deformation of the flexible substrate. 1. A clamp-type ammeter comprising:a flexible substrate of which an inner wall is configured to be able to deform into a substantially cylindrical shape,a plurality of magnetic sensor elements disposed at the inner wall of the flexible substrate,a tube of which one end is connected to the flexible substrate; andan operation unit that is connected to the other end of the tube and that can operate the deformation of the flexible substrate.2. The clamp-type ammeter according to claim 1 ,wherein the plurality of magnetic sensor elements are arranged so that they are located at the positions of point symmetry with the center of the substantially cylindrical shape as a symmetrical point when the inner wall becomes the substantially cylindrical shape.3. The clamp-type ammeter according to claim 1 ,wherein the flexible substrate has two portions connected so that the cross-section is Y-shaped or U-shape,two arm portions can be opened and closed by he operation by the operating unit.4. The clamp-type ammeter according to claim 3 ,wherein the plurality of magnetic sensor elements are arranged so that they are located at the positions of point symmetry with the center of the substantially cylindrical shape as a symmetrical point when the two arm portions are closed.5. The clamp-type ammeter according to claim 3 ,wherein the arm portion includes a plurality of block pieces whose cross-section is trapezoidal, and a wire for connecting the plurality of block pieces,a base of ...

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Номер записи: 44
05-01-2017 дата публикации

BUS BAR MODULE

Номер: US20170003323A1
Автор: GOTO Kenji, NAKAYAMA Wataru
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

A bus bar module equipped with a current sensor includes a first bus bar, a second bus bar, a substrate, and a first magnetoelectric transducer. The first bus bar has a first notch. The second bus bar has a second notch and is placed in parallel to the first bus bar. The second notch is provided at a position different from the first notch in an extending direction of the first bus bar. The substrate is fitted to both the first notch and the second notch. Further, the substrate is sandwiched between those side surfaces of the first bus bar and the second bus bar which are opposed to each other. The first magnetoelectric transducer is placed inside the first notch and fixed to the substrate. 1. A bus bar module equipped with a current sensor , the bus bar module comprising:a first bus bar having a first notch;a second bus bar having a second notch, the second bus bar being placed in parallel to the first bus bar, and the second notch being provided at a position different from the first notch in an extending direction of the first bus bar;a substrate fitted to both the first notch and the second notch, the substrate being sandwiched between the side surfaces of the first bus bar and the second bus bar which are opposed to each other; anda first magnetoelectric transducer placed inside the first notch and fixed to the substrate.2. The bus bar module according to claim 1 , whereinin a first section view, the first magnetoelectric transducer is -placed on a straight line passing through a center of a section of the second bus bar and extending in an aligning direction of the first bus bar and the second bus bar,the first section is a section passing through the first magnetoelectric transducer and perpendicular to the extending direction.3. The bus bar module according to claim 1 , whereineach of the first bus bar and the second bus bars has a flat section, and each of the first bus bar and the second bus bars has a first side surface and a second side surface,the first ...

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Номер записи: 45
05-01-2017 дата публикации

Magnetic field sensor arrangement and current transducer therewith

Номер: US20170003325A1
Автор: Ludovic Simonin
Принадлежит: LEM INTELLECTUAL PROPERTY SA

Magnetic field sensor arrangement for positioning in a gap formed between end faces ( 12 ) of a magnetic core ( 4 ), comprising a magnetic field detector ( 5 ), a housing ( 10 ), and a grounding device ( 8 ), the magnetic field sensor and grounding device being mounted to the housing. The grounding device comprises at least one contact ( 20 ) elastically supported and configured for electrical contact with the magnetic core. The elastically supported contact is mounted adjacent a sensing portion of the magnetic field sensor and configured for insertion in the magnetic circuit core gap such that the contact elastically biases against the end face of the magnetic core.

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Номер записи: 46
07-01-2016 дата публикации

MEASURING SYSTEM HAVING SEVERAL SENSORS AND HAVING A CENTRAL EVALUATING UNIT

Номер: US20160003874A1
Автор: MARIEN Jan
Принадлежит:

The invention relates to a measuring system for measuring electrical measurement variables (I I I U U U) in an electrical installation, in particular in a medium voltage installation or in a high voltage installation, including a plurality of sensors (--) which each measure at least one electrical measurement variable (I I I U U U) and output a measurement signal corresponding to the measurement variable (I I I U U U), and including a central evaluating unit () which receives the measurement signals from the sensors (--). 117-. (canceled)18. A measuring system for measuring electrical measurement variables in an electrical installation , comprising:a) a plurality of sensors each of which measures at least one electrical measurement variable and outputs a measurement signal corresponding to the at least one electrical measurement variable, andb) a central evaluating unit which receives measurement signals from the sensors.191. The measuring system as claimed in claim , whereina) at least one sensor of the plurality of sensors is at a potential close to high voltage,b) the central evaluating unit is at a potential close to earth, andc) the at least one sensor at the potential close to high voltage is galvanically separated from the central evaluating unit at the potential close to earth.20. The measuring system as claimed in claim 19 , wherein the central evaluating unit is connected via a light conductor to the at least one sensor at the potential close to high voltage claim 19 , in order to read out the measurement signal and to separate the central evaluating unit galvanically from the at least one sensor.21. The measuring system as claimed in claim 19 , whereina) a current supply unit is provided for supplying current to the at least one sensor at the potential close to high voltage, wherein the current supply unit is connected to the at least one sensor and is at a potential close to earth, andb) the current supply unit at the potential close to earth is ...

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Номер записи: 47
04-01-2018 дата публикации

CURRENT SENSOR

Номер: US20180003742A1
Автор: SHIMIZU Yasuhiro
Принадлежит:

A current sensor includes a primary conductor through which a current to be measured flows and a first magnetic sensor and a second magnetic sensor that each detects an intensity of a magnetic field generated by the current flowing through the primary conductor. The current is diverted into two flow channels and flows through the primary conductor in a length direction of the primary conductor. The primary conductor includes an arch portion that extends in the length direction while bending to project in one thickness direction of the primary conductor, and defines one of the two flow channels. The first magnetic sensor is disposed on an inner side of the arch portion and is located on a side of an undersurface of the primary conductor. The second magnetic sensor is located on a side of a surface of a portion of the primary conductor which defines the other one of the two flow channels. 1. A current sensor comprising:a primary conductor through which a current to be measured flows; anda first magnetic sensor and a second magnetic sensor that each detects an intensity of a magnetic field generated by the current flowing through the primary conductor; whereinthe current is diverted into first and second flow channels and flows through the primary conductor in a length direction of the primary conductor;the primary conductor includes an arch portion that extends in the length direction and bends to project in a first thickness direction of the primary conductor, and defines the first flow channel;the first magnetic sensor and the second magnetic sensor are arranged in a width direction of the primary conductor;the first magnetic sensor is disposed on an inner side of the arch portion and is located on a side of an undersurface of the primary conductor;the second magnetic sensor is located on a side of a surface of a portion of the primary conductor which defines the second flow channel; andeach of the first magnetic sensor and the second magnetic sensor detects a ...

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Номер записи: 48
04-01-2018 дата публикации

SELF-CALIBRATING CONTACTLESS POWER CONSUMPTION SENSING

Номер: US20180003746A1
Автор: Gupta Sidhant, Patel Shwetak N., Reynolds Matthew S.
Принадлежит: BELKIN INTERNATIONAL, INC.

A method of sensing electrical power being provided to a structure using a sensing device, a calibration device, and one or more processing modules. The sensing device can include one or more magnetic field sensors. The sensing device can be attached to a panel of a circuit breaker box. The panel of the circuit breaker box can overlie at least a part of one or more main electrical power supply lines for an electrical power infrastructure of a structure. The calibration device can include a load unit. The calibration device can be electrically coupled to the electrical power infrastructure of the structure. The method can include automatically calibrating the sensing device by determining a first transfer function in a piecewise manner based on a plurality of ordinary power consumption changes in the structure. The method also can include determining a power consumption measurement using the one or more processing modules based on one or more output signals of the sensing device and the first transfer function. Other embodiments are provided. 1. A method of sensing electrical power being provided to a structure using a sensing device , a calibration device , and one or more processing modules , the sensing device comprising one or more magnetic field sensors , the sensing device being attached to a panel of a circuit breaker box , the panel of the circuit breaker box overlying at least a part of one or more main electrical power supply lines for an electrical power infrastructure of a structure , the calibration device comprising a load unit , the calibration device being electrically coupled to the electrical power infrastructure of the structure , the method comprising:automatically calibrating the sensing device by determining a first transfer function in a piecewise manner based on a plurality of ordinary power consumption changes in the structure; anddetermining a power consumption measurement using the one or more processing modules based on one or more output ...

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Номер записи: 49
07-01-2021 дата публикации

POSITION ESTIMATION METHOD, POSITION ESTIMATION DEVICE, AND MOTOR MODULE

Номер: US20210003422A1
Автор: Fujita Atsushi, ISHIGAMI Shota
Принадлежит:

A position estimation method of the present disclosure includes: acquiring learning data from a storage medium that stores the learning data including a sequence of a plurality of measurement values which define a waveform characteristic of a first electrical signal output from a sensor device when a rotor R is rotating; acquiring a sequence of a plurality of detection values which define a waveform characteristic of a second electrical signal output from the sensor device when the rotor starts rotating from a stopped state; and performing matching between an increase/decrease pattern of the sequence of the plurality of measurement values and an increase/decrease pattern of the sequence of the plurality of detection values to estimate a relationship between a rotation position of the rotor when the first electrical signal is output and a rotation position of the rotor when the second electrical signal is output. 1. A position estimation method of estimating a rotation position of a rotor in a motor , which includes: the rotor having a plurality of magnetic poles; a stator having a plurality of windings; and a sensor device outputting an electrical signal that periodically changes according to rotation of the rotor , the position estimation method comprising:acquiring learning data from a storage medium that stores the learning data including a sequence of a plurality of measurement values which define a waveform characteristic of a first electrical signal output from the sensor device when the rotor is rotating;acquiring a sequence of a plurality of detection values which define a waveform characteristic of a second electrical signal output from the sensor device when the rotor starts rotating from a stopped state; andperforming matching between an increase/decrease pattern of the sequence of the plurality of measurement values and an increase/decrease pattern of the sequence of the plurality of detection values to estimate a relationship between a rotation position ...

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Номер записи: 50
02-01-2020 дата публикации

SYSTEM FOR ACCURATELY DETERMINING AN AMOUNT OF ELECTRICAL CURRENT FLOWING THROUGH A HALL EFFECT CURRENT SENSOR

Номер: US20200003808A1
Автор: Busser Robert D.
Принадлежит:

A system for accurately determining an amount of electrical current flowing through a Hall effect current sensor is provided. The system includes a microcontroller that determines a smoothed electrical current offset value based on an average measured apparent electrical current value, an electrical current offset smoothing coefficient, a prior smoothed electrical current offset value, and a prior electrical current offset trend value. The microcontroller determines an electrical current offset trend value associated with the Hall effect current sensor based on the smoothed electrical current offset value, an electrical current offset trend smoothing coefficient, a prior smoothed electrical current offset value, and the prior electrical current offset trend value. 1. A system for accurately determining an amount of electrical current flowing through a Hall effect current sensor , comprising:a microcontroller operably coupled to the Hall effect current sensor;the microcontroller determining an average measured apparent electrical current value based on an electrical current output signal from the Hall effect current sensor, before an electrical current is flowing through the Hall effect current sensor;the microcontroller determining a smoothed electrical current offset value based on the average measured apparent electrical current value, an electrical current offset smoothing coefficient, a prior smoothed electrical current offset value, and a prior electrical current offset trend value; andthe microcontroller determining an electrical current offset trend value associated with the Hall effect current sensor based on the smoothed electrical current offset value, an electrical current offset trend smoothing coefficient, a prior smoothed electrical current offset value, and the prior electrical current offset trend value.2. The system of claim 1 , wherein:the microcontroller determining an updated measured apparent electrical current value based on the electrical ...

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Номер записи: 51
02-01-2020 дата публикации

PLANAR HALL EFFECT SENSORS

Номер: US20200003850A1
Автор: AMRUSI Shai, FAIVINOV Igor, GROSZ Asaf, KLEIN Lior, MOR Vladislav, SCHULTZ Mordechai
Принадлежит:

A planar Hall effect (PHE) sensor for measuring at an external magnetic field includes a plurality of elongated magnetic regions. Each magnetic region includes a ferromagnetic material that is magnetized along a longitudinal axis. The magnetic regions cross one another at an overlap region that is characterized by a plurality of easy magnetic axes. At least two pairs of electrical leads are each aligned along one of the easy magnetic axes. A current source may be connected to a first pair of the electrical leads to cause a current to flow through the overlap region along a first easy magnetic axis. A voltage measurement device may be connected to another pair of the electrical leads to measure a PHE voltage that is generated by a component of the external magnetic field that is perpendicular to the easy magnetic axis along which the overlap region is magnetized. 1. A planar Hall effect (PHE) sensor for measuring at least one component of an external magnetic field , the sensor comprising:a plurality of elongated magnetic regions, each elongated magnetic region comprising a ferromagnetic material that is magnetized, in the absence of the external magnetic field, along a longitudinal axis along the elongated dimension of the elongated magnetic region, said plurality of elongated magnetic regions crossing one another at an overlap region, the overlap region being characterized by a plurality of easy magnetic axes;at least two pairs of electrical leads, at least one of the pairs being aligned along one easy magnetic axis of said plurality of easy magnetic axes;a current source that, when connected to a first pair of said at least two pairs of electrical leads, is operable to cause a current to flow through the overlap region along a first easy magnetic axis with which the first pair is aligned; anda voltage measurement device, when connected to electrical leads of at least one other pair of said at least two electrical leads and when the current flows through the ...

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Номер записи: 52
07-01-2021 дата публикации

CURRENT SENSOR

Номер: US20210003614A1
Автор: ESAKA Takuma, MIWA Hiroaki, Sakai Ryosuke
Принадлежит:

A current sensor includes an electrical-conduction member, a magnetoelectric converter and a shield. The shield includes a first shield and a second shield arranged such that surfaces are opposed to and spaced away from each other. A part of the electrical-conduction member and the magnetoelectric converter are located between the surface of the first shield and the surface of the second shield. The part of the electrical-conduction member located between the first shield and the second shield extends in an extension direction along the surface of the second shield. The second shield has two sides aligned in a lateral direction perpendicular to the extension direction, and has a plurality of extending parts extending toward the first shield at the sides and being aligned with and separated from each other in the extension direction. The magnetocelectric converter is located between the plurality of extending parts. 1. A current sensor comprising:an electrical-conduction member through which a measurement current to be measured flows;a magnetoelectric converter that converts a measurement magnetic field caused by a flow of the measurement current into an electric signal; anda shield that restricts an electromagnetic noise into the magnetoelectric converter, whereinthe shield includes a first shield and a second shield each having a plate shape, the first shield and the second shield being arranged such that surfaces are opposed to and spaced away from each other,a part of the electrical-conduction member and the magnetoelectric converter are located between the surface of the first shield and the surface of the second shield,the part of the electrical-conduction member located between the first shield and the second shield extends in an extension direction that is along the surface of the second shield,the second shield has two sides aligned in a lateral direction perpendicular to the extension direction,the second shield has a plurality of extending parts extending ...

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Номер записи: 53
07-01-2021 дата публикации

CURRENT SENSOR

Номер: US20210003615A1
Автор: ESAKA Takuma, MIWA Hiroaki, Nomura Hiroshi, Sakai Ryosuke, SASAKI Akito, SUGITO Tatsuaki, Tsukamoto Takeshi
Принадлежит:

A current sensor includes a wiring board, a shield, an insulating sensor housing, and a shield adhesive. The wiring board and the shield are accommodated in the sensor housing. The sensor housing has a shield support part to support the shield, and a shield adhesion part. An application surface of the shield adhesion part is further from the shield than a contact surface of the shield support part. The shield is mounted on the contact surface of the shield support part, and the shield adhesive is disposed between the application surface of the shield adhesion part and the shield. The shield and the wiring board are aligned with and spaced from each other in the sensor housing. 1. A current sensor comprising:a wiring board that has a magnetoelectric converter thereon, the magnetoelectric converter configured to convert a measurement magnetic field caused by a flow of a measurement current into an electric signal;a shield that restricts an electromagnetic noise into the magnetoelectric converter;an insulating sensor housing that accommodates the wiring board and the shield therein; anda shield adhesive that bonds the sensor housing and the shield together, whereinthe sensor housing has a shield support part to support the shield, and a shield adhesion part,the shield support part has a contact surface,the shield adhesion part has an application surface on which the shield adhesive is disposed,the application surface of the shield adhesion part is further from the shield than the contact surface of the shield support part, andthe shield is mounted on the contact surface of the shield support part, the shield adhesive is disposed between the application surface of the shield adhesion part and the shield, and the shield and the wiring board are aligned with and spaced from each other in the sensor housing.2. The current sensor according to claim 1 , further comprisingan electrical-conduction member that allows the measurement current to flow therein, whereinthe ...

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Номер записи: 54
07-01-2021 дата публикации

CURRENT SENSOR

Номер: US20210003616A1
Автор: ESAKA Takuma, MIWA Hiroaki, Sakai Ryosuke, SASAKI Akito, SUGITO Tatsuaki
Принадлежит:

A current sensor includes a plurality of individual sensors and a wiring case. Each of the individual sensors includes an electrical-conduction member through which a measurement current to be measured flows, a magnetoelectric converter and an insulating sensor housing. The magnetoelectric converter converts a measurement magnetic field caused by a flow of the measurement current into an electric signal. The sensor housing accommodates the electrical-conduction member and the magnetoelectric converter therein. The wiring case is larger than the sensor housing. The wiring case includes an insulating integrated housing in which the plurality of individual sensors is fixed, and an input/output wiring disposed in the integrated housing and electrically connected to the megnetoelectric converter of each of the plurality of individual sensors. 1. A current sensor comprising: an electrical-conduction member through which a measurement current to be measured flows;', 'a magnetoelectric converter that converts a measurement magnetic field caused by a flow of the measurement current into an electric signal; and', 'an insulating sensor housing that accommodates the electrical-conduction member and the magnetoelectric converter therein; and, 'a plurality of individual sensors, each including an insulating integrated housing in which the plurality of individual sensors is fixed; and', 'an input/output wiring disposed in the integrated housing and electrically connected to the megnetoelectric converter of each of the plurality of individual sensors., 'a wiring case being larger than the sensor housing, and including2. The sensor housing according to claim 1 , whereineach of the plurality of individual sensors includes a shield that restricts an electromagnetic noise into the magnetoelectric converter, whereinthe shield includes a first shield and a second shield each having a plate shape, the first shield and the second shield being arranged such that surfaces are opposed to and ...

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Номер записи: 55
07-01-2021 дата публикации

CURRENT SENSOR

Номер: US20210003617A1
Автор: ESAKA Takuma, MIWA Hiroaki, Sakai Ryosuke
Принадлежит:

A current sensor includes an electrical-conduction member, a magnetoelectric converter and a shield. The shield includes a first shield and a second shield arranged such that surfaces are opposed to and spaced away from each other. A part of the electrical-conduction member and the magnetoelectric converter are located between the first shield and the second shield. The part of the electrical-conduction member located between the first and second shields extends in an extension direction that is along the surface of the first shield. In at least one of the first shield and the second shield, a center part has a length greater than lengths of opposite end parts in a lateral direction that is along the surface of the first shield and perpendicular to the extension direction. The magnetoelectric converter is located between the opposite end parts of the first and second shields in the extension direction.

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Номер записи: 56
03-01-2019 дата публикации

CURRENT DETECTOR AND METER

Номер: US20190004095A1
Автор: HAYASHI Kazunobu, SEKI Kenichi, YODA Hajime
Принадлежит: HIOKI DENKI KABUSHIKI KAISHA

A current detector includes a ring-shaped core for inserting a wire; a detection winding on the core; and resistor connectors for connecting a resistor in series to the detection winding. The detection winding has a first winding at a first end and a second winding at a second end that are connected in series. The first winding and second winding each have n (where n is three or higher) first or second unit windings in series. The core surface is partitioned into 2n regions around the core. The first unit windings are formed in odd-numbered regions and the second unit windings are formed in even-numbered regions. A j(where j is 1 to n) first unit winding from the first end and a jsecond unit winding from the second end are not adjacent and are formed with an equal number of turns. 1. A current detector comprising:a ring-shaped magnetic core through which a measured wire is inserted;a detection winding formed on an outer surface of the magnetic core; anda pair of resistor connecting terminals disposed on the detection winding for connecting a detection resistor, which converts a current flowing in the detection winding due to a measured current flowing on the measured wire that has been inserted through the magnetic core to a voltage, in series to the detection winding,wherein the detection winding is composed of a first winding at a first end side and a second winding at a second end side that is connected in series to the first winding,the first winding is constructed by connecting n (where n is an integer that is three or higher) first unit windings in series,the second winding is constructed by connecting n second unit windings in series,the outer surface is partitioned into 2n formation regions along a circumferential direction of the magnetic core, and{'sup': th', 'th, 'the n first unit windings are formed in odd-numbered formation regions along the circumferential direction with one out of the 2n formation regions as a first formation region, the n second unit ...

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Номер записи: 57
07-01-2021 дата публикации

ELECTRONIC POWER SWITCH DRIVE MODULE

Номер: US20210006240A1
Автор: SCHLÄFLI Dominik, TROMBERT Stephan
Принадлежит:

An electronic power switch drive module for a power semiconductor unit, comprising a gate drive and a current transducer mounted on one or more circuit boards, the gate drive comprising at least one circuit portion for controlling at least one transistor of a power semiconductor module of said power semiconductor unit, the current transducer configured to be coupled to an output of the power semiconductor module for measuring an output current of the power semiconductor module, said at least one circuit portion connected to an output potential of the output current to be measured. The current transducer comprises at least one magnetic field sensor, the current transducer being connected to said at least one circuit portion of the gate drive at said output potential in a non-isolated manner. 121.-. (canceled)22. An electronic power switch drive control module for a power semiconductor unit , comprising an electronic power switch drive and a current transducer mounted on one or more circuit boards , the electronic power switch drive comprising at least one circuit portion for controlling at least one electronic power switch of a power semiconductor module of said power semiconductor unit , the current transducer configured to be coupled to an output of the power semiconductor module for measuring an output current of the power semiconductor module , said at least one circuit portion connected to an output potential (Vout) of the output current to be measured , wherein the current transducer comprises at least one magnetic field sensor , the current transducer being connected to said at least one circuit portion of the electronic power switch drive at said output potential in a non-isolated manner , said at least one circuit portion comprising a control logic circuit configured for connection to a control board of said power semiconductor module , a measurement output signal of the current transducer being fed into the control logic circuit.23. The electronic power ...

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Номер записи: 58
20-01-2022 дата публикации

INTEGRATED CURRENT SENSOR WITH MAGNETIC FLUX CONCENTRATORS

Номер: US20220018879A1
Автор: BITO Jo, GREEN Keith Ryan, LEE Dok Won
Принадлежит:

A packaged current sensor includes a lead frame, an integrated circuit, an isolation spacer, a first magnetic concentrator, and a second magnetic concentrator. The lead frame includes a conductor. The isolation spacer is between the lead frame and the integrated circuit. The first magnetic concentrator is aligned with the conductor. The second magnetic concentrator is aligned with the conductor. 1. A packaged current sensor , comprising:a lead frame comprising a conductor;an integrated circuit;an isolation spacer between the lead frame and the integrated circuit; anda magnetic concentrator aligned with the conductor.2. The packaged current sensor of claim 1 , wherein the integrated circuit comprises a Hall effect sensor aligned with the magnetic concentrator.3. The packaged integrated circuit of claim 2 , wherein:the magnetic concentrator is a first magnetic concentrator;the packaged integrated circuit comprises a second magnetic concentrator; andthe Hall effect sensor is between the first magnetic concentrator and the second magnetic concentrator.4. The packaged current sensor of claim 3 , wherein the Hall effect sensor overlaps an edge of the first magnetic concentrator and an edge of the second magnetic concentrator.5. The packaged current sensor of wherein the integrated circuit comprises:a first Hall effect sensor aligned with an edge of the magnetic concentrator; anda second Hall effect sensor aligned with the edge of the magnetic concentrator opposite the first Hall effect sensor.6. The packaged current sensor of claim 5 , wherein:the magnetic concentrator is a first magnetic concentrator;the packaged integrated circuit comprises a second magnetic concentrator; and a third Hall effect sensor aligned with an edge of the second magnetic concentrator; and', 'a fourth Hall effect sensor aligned with the edge of the second magnetic concentrator opposite the third Hall effect sensor., 'the integrated circuit comprises7. The packaged current sensor of claim 6 , ...

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Номер записи: 59
04-01-2018 дата публикации

Wireless Control And Status Monitoring For Electric Grill With Current Protection Circuitry

Номер: US20180007739A1
Автор: Emmerich Jeffery C., Knappenberger Eric, Lerch Matthew, Zuleta Julio C.
Принадлежит: Weber-Stephen Products LLC

Provided is an apparatus and method for protecting against unsafe electric current conditions. A protections circuit may be used in a device, such as an electric grill, that has one or more electric loads, such as heating elements. The protection circuit may protect against various failure scenarios, including, without limitation, instances of ground fault, over current, driver failure, and failure of a microprocessor. The microprocessor may further be in wireless communication with a remote device and wirelessly communicate error codes indicative of an error, and receive control signals from the remote device for controlling temperature or turning the grill off. The remote device may also receive operating parameters and create a log of the electric grill's conditions at the time of an error. 1. A system for monitoring a status of an electric grill , comprising:at least one heating element connectable to a voltage line and a neutral line;a Hall Effect sensor configured to measure current passing to said at least one heating element,a ground fault detection unit configured to detect a ground fault error between the voltage line and the neutral line;a wireless controller; anda microprocessor, the microprocessor being in communication with the Hall Effect sensor, the ground fault detection unit, and the wireless controller;wherein the microprocessor is adapted and configured to wirelessly send and receive signals to and from a remote device via the wireless controller.2. The system of claim 1 , wherein the microprocessor is adapted and configured to identify an overcurrent error by comparing a current reading from the Hall Effect sensor to a predetermined current threshold claim 1 , and to wirelessly send an error code to the remote device in response to an overcurrent error.3. The system of claim 1 , wherein the microprocessor is adapted and configured to identify an unexpected current error by comparing a current reading from the Hall Effect sensor to an expected ...

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Номер записи: 60
27-01-2022 дата публикации

Position-Compensated Current Measuring Device

Номер: US20220026468A1
Автор: Tobias Stadtfelder
Принадлежит: Phoenix Contact GmbH and Co KG

The present disclosure relates to a current measuring transducer for measuring an electric current in an electrical conductor that can be arranged so as to extend through the current measuring transducer, comprising a housing base portion and a housing mating portion coupled to one another, wherein the electrical conductor can be arranged in a central through opening between the housing base portion and the housing mating portion, wherein the housing base portion comprises a first part of a probe ring and the housing mating portion comprises a second part thereof, and comprises at least two sensors for simultaneously measuring the electric current in the electrical conductor, and further comprises an evaluation device in the current measuring transducer for simultaneously evaluating sensor signals and for outputting a corrected output signal.

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Номер записи: 61
12-01-2017 дата публикации

Integrated current sensor system and method for producing an integrated current sensor system

Номер: US20170010309A1
Автор: Harald Etschmaier
Принадлежит: ams AG

An integrated current sensor system has a printed circuit board with a magnetic field sensor with a sensor interface. The printed circuit board has a first side on which, isolated from the printed circuit board, a first current conductor is arranged with a longitudinal edge of a portion of the first current conductor being proximate to a sensitive area of sensor. The circuit board has a second side on which a second current conductor is, isolated from the printed circuit board, arranged, wherein a longitudinal edge of a portion of the second current conductor is arranged proximate to the sensitive area. The first and the second current conductor are electrically connected with at least one conductive via.

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Номер записи: 62
12-01-2017 дата публикации

CURRENT TRANSDUCER

Номер: US20170010310A1
Автор: Morel Pascal, SID Salim, VARDON Jean-Marie
Принадлежит: LEM INTELLECTUAL PROPERTY SA

Electrical current transducer for measuring an electric current in a primary conductor, including a housing (), a magnetic core () surrounding a central aperture () through which the primary conductor extends, and a magnetic field sensing device () comprising connection terminals (). The housing comprises a magnetic core receiving cavity () in which the magnetic core is lodged and a connecting interface portion () in which the magnetic field sensing is lodged, the connecting interface projecting outwardly from the magnetic core receiving cavity and comprising latching elements complementary to latching elements of a separate connector interface element () selectively mountable to the connecting interface portion. The connector interface element comprises a connector shroud () forming with the connection terminals a pluggable connector interface for pluggable connection to an external pluggable connector, the current transducer adapted for mounting on an external circuit board without connector shroud. 117-. (canceled)18. An electrical current transducer for measuring an electric current in a primary conductor , including a housing , a magnetic core surrounding a central aperture through which the primary conductor extends , and a magnetic field sensing device comprising connection terminals , the housing comprising a magnetic core receiving cavity in which the magnetic core is lodged and a connecting interface portion in which the magnetic field sensing is lodged , the connecting interface projecting outwardly from the magnetic core receiving cavity and comprising latching elements complementary to latching elements of a separate connector interface element selectively mountable to the connecting interface portion , the connector interface element comprising a connector shroud forming with the connection terminals a pluggable connector interface for pluggable connection to an external pluggable connector , the current transducer adaptable without connector shroud ...

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Номер записи: 63
14-01-2016 дата публикации

SMART METER VOLTAGE SENSING USING OPTICALLY COUPLED ISOLATORS

Номер: US20160011236A1
Автор: WANG Karl L.
Принадлежит:

A transformer-less method and system for voltage and current sensing using voltage drops across resistors is disclosed. Using optically coupled isolators, the sensed voltages in the high voltage power lines are optically coupled and electrically isolated to the low voltage circuits. The circuit designs for voltage and current sensing's and electrical isolation are disclosed. 2. The method of claim 1 , wherein the IR emitting diode is biased in a forward conduction region to maximize a change in current with respect to a change of the applied forward voltage.3. The method of claim 1 , wherein the IR emitting diode operates at a forward conduction region of a current-voltage characteristic of the IR emitting diode with large gain to maximize sensitivity of the optically coupled isolator while minimizing current consumption.4. The method of claim 1 , wherein the optical transistor is in an emitter follower configuration.5. The method of claim 4 , wherein a load resistor is coupled to an emitter of the optical transistor to develop a voltage that is proportional and in phase to a sensed current.6. The method of claim 1 , whereas the optical transistor is in an open collector configuration.98. The system of claim claim 1 , wherein the IR emitting diode is biased in a forward conduction region to maximize a change in current with respect to a change of the applied forward voltage.108. The system of claim claim 1 , wherein the IR emitting diode operates at a forward conduction region of a current-voltage characteristic of the IR emitting diode with large gain to maximize sensitivity of the optically coupled isolator while minimizing current consumption.11. The system of claim 10 , wherein the optical transistor is in an emitter follower configuration.12. The system of claim 11 , wherein a load resistor is coupled to an emitter of the optical transistor to develop a voltage that is proportional and in phase to a sensed current.138. The system of claim claim 11 , whereas the ...

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Номер записи: 64
14-01-2016 дата публикации

ELECTRIC CURRENT MEASURING APPARATUS

Номер: US20160011237A1
Автор: Konno Yoshihiro, Sasaki Masaru
Принадлежит:

Current measuring device keeps fluctuation range for the ratio error in output within ±0.5% range and simplified assembly thereof. The measuring device includes at least a light entrance and exit, optical fiber for a sensor, Faraday rotator, first and second ¼-wavelength plates, polarization separator, light source, and signal-processing-circuit including a photoelectric-conversion-element. Optical fiber for a sensor has birefringence and includes one end wherein two circularly polarized light-beams having different rotation enter directions and another end reflects circularly polarized light-beams entered. Phase difference of two linearly polarized light-beams in the round-trip light path between two ¼-wavelength plates is compensated, and the Faraday rotational angle when the Faraday rotator is magnetically saturated set to 22.5°+α° so fluctuation range for ratio error in measured value of the current to be measured is set in range, ±0.5%. The crystal-axes on optical faces of two ¼-wavelength plates are set to be perpendicular or same direction. 1. An electric current measuring apparatus at least comprising:a light incident and emitting unit,a optical fiber for a sensor,a Faraday rotator,a first quarter-wave plate and a second quarter-wave platea polarization splitter,a light source, anda signal processing circuit including a photoelectric conversion element; andthe light incident and emitting unit is constituted by two waveguides arrayed; the light incident and emitting unit, the polarization splitter, the first quarter-wave plate, the second quarter-wave plate, the Faraday rotator, and the optical fiber for a sensor are arranged in order;the optical fiber for a sensor is birefringent and, is provided around a periphery of an electric conductor through which measured electric current flows, and includes a first end into which two circularly polarized lights having different rotation directions for being incident and a second end for reflecting the incident ...

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Номер записи: 65
14-01-2016 дата публикации

INTERFERENCE COMPENSATING SINGLE POINT DETECTING CURRENT SENSOR FOR A MULTIPLEX BUSBAR

Номер: US20160011239A1
Автор: AHN Young Ho, YOON Jong Chan
Принадлежит:

A single point detecting current sensor includes a plurality of magnetic sensor modules, wherein a magnetic sensor module is installed onto each busbars with an insulation displacement contact or is installed adjacent to each busbar, and outputs the current through a busbars measured by a magnetic sensor; a signal collection module collecting measured signals output by the plurality of magnetic sensor modules; and a signal interference compensation module deriving a corrected current value for which interference has been removed, by calculating the mutual interference between said busbars using the signals collected by said signal collection module. 1. An interference correction type single-point detection current sensor for multiple busbars , the single-point detection current sensor comprising:a plurality of magnetic sensor modules which are brought in insulation contact with or installed adjacent to a plurality of respective busbars, measure currents flowing into the busbars using magnetic sensors, and output the measured currents;a signal collection module which collects the measured signals output by the plurality of magnetic sensor modules; anda signal interference correction module which derives corrected current values from which interference has been removed by calculating amounts of interference between the plurality of busbars in the signals collected by the signal collection module.2. The single-point detection current sensor of claim 1 , wherein the magnetic sensor module is configured to comprise:the magnetic sensor which is brought in insulation contact with or installed adjacent to the busbar and collects a magnetic field line generated by a current flowing into the busbar; anda signal analysis circuit which calculates back to information about a current that flows into the busbar by analyzing a signal collected by the magnetic sensor.3. The single-point detection current sensor of claim 1 , wherein the signal interference correction module is ...

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Номер записи: 66
14-01-2016 дата публикации

AUTOMATIC GENERATION AND ANALYSIS OF SOLAR CELL IV CURVES

Номер: US20160011246A1
Автор: FISCHER Kevin C., Jones Jason C., Kraft Steven M.
Принадлежит: SunPower Corporation

A photovoltaic system includes multiple strings of solar panels and a device presenting a DC load to the strings of solar panels. Output currents of the strings of solar panels may be sensed and provided to a computer that generates current-voltage (IV) curves of the strings of solar panels. Output voltages of the string of solar panels may be sensed at the string or at the device presenting the DC load. The DC load may be varied. Output currents of the strings of solar panels responsive to the variation of the DC load are sensed to generate IV curves of the strings of solar panels. IV curves may be compared and analyzed to evaluate performance of and detect problems with a string of solar panels. 1. A method of evaluating performance of solar panels , the method comprising:selectively providing power to a first current sensor in a plurality of current sensors, wherein the plurality of current sensors comprises Hall Effect field sensors;sensing, using the first current sensor while providing power to the first current sensor, current generated by a first string of solar panels in a plurality of strings of solar panels to generate a sensed current;selectively providing power to a second current sensor in the plurality of current sensors instead of providing power to the first current sensor;sensing, using the second current sensor while providing power to the second current sensor, current generated by a second string of solar panels in the plurality of strings of solar panels; andevaluating a performance of the first string of solar panels using the sensed current.2. The method of claim 1 , further comprising:sensing a solar insolation on the first string of solar panels at a first instance;sensing a voltage generated by the first string of solar panels at the first instance; andgenerating a current-voltage (IV) curve of the first string of solar panels at the first instance.3. The method of claim 2 , further comprising:sensing a solar insolation on the first string ...

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Номер записи: 67
11-01-2018 дата публикации

ACCELERATION SENSOR

Номер: US20180011125A1
Автор: FURUBAYASHI Yuki, OSHIMA Takashi
Принадлежит:

Provided is an acceleration sensor capable of realizing a simultaneous operation method of signal detection and servo control in place of a time-division processing method, by an MEMS process in which a manufacturing variation is large. 1. An MEMS capacitive acceleration sensor , comprising:a first MEMS capacitor pair for signal detection;a second MEMS capacitor pair for servo control in which one electrode of each capacitor is connected to one electrode of each capacitor in the first capacitor pair and to which a servo voltage to generate force in a direction reverse to a detection signal of acceleration by the first MEMS capacitor pair is applied;a charge amplifier which is connected to electrodes of the first MEMS capacitor pair and the second MEMS capacitor pair connected to each other and forming one weight and converts a charge change on the weight into a voltage change;an A/D converter which digitizes a voltage change signal of an output of the charge amplifier;a 1-bit quantizer which quantizes a servo value to generate force in a direction reverse to displacement of the weight by the acceleration, generated from an output of the A/D converter, with 1 bit;a 1-bit D/A converter which converts an output of the 1-bit quantizer into an analog servo voltage and applies the analog servo voltage to the second MEMS capacitor pair;a correlation detection unit which outputs a signal proportional to a mismatch ΔC of capacity values in the second MEMS capacitor pair, on the basis of the output of the A/D converter and the output of the 1-bit quantizer;a control unit which outputs a capacity control value to cancel an influence by the mismatch ΔC of the capacity values on an input node of the charge amplifier, on the basis of the output of the correlation detection unit; anda variable capacity unit which is inserted between an output node of a driver outputting the output of the 1-bit quantizer at voltage amplitude more suppressed than amplitude of the servo voltage and ...

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Номер записи: 68
11-01-2018 дата публикации

DEVICE FOR MEASURING ELECTRIC CURRENTS IN ELECTRICAL CONDUCTORS

Номер: US20180011129A1
Автор: HOUBRE Pascal, Larcher Patrick
Принадлежит: Schneider Electric Industries SAS

A device for measuring electric currents includes multiple current sensors of Rogowski type, each suitable for measuring an electric current flowing through an electrical conductor, these current sensors being in adjacent pairs and each including coils for measuring the current and a central aperture for receiving the corresponding electrical conductor. Each current sensor includes two of the coils, which coils are positioned in parallel and facing one another on opposite edges of the central aperture and two ferromagnetic bars extending between ends of the coils, perpendicularly to a longitudinal axis of the coils. 2. The measuring device according to claim 1 , wherein each current sensor has a ferromagnetic bar in common with the immediately adjacent current sensor.3. The measuring device according to claim 1 , wherein the device comprises first and second armatures arranged parallel to each other and common to all the current sensors of the device claim 1 , the two coils of each current sensor being arranged on the first and second armatures claim 1 , respectively.4. The measuring device according to claim 1 , wherein each of the first and second armatures have a rectilinear part claim 1 , and coils being arranged on these first and second armatures by winding about this rectilinear part.5. The measuring device according to claim 4 , wherein both the first and second armatures comprise housings each adapted to receive one end of one of the ferromagnetic bars.6. The measuring device according to claim 4 , wherein the first and second armatures are identical and each comprise fastening elements claim 4 , adapted for securing together the first and second armatures to form the measuring device.7. The measuring device according to claim 3 , wherein the first and second armatures each comprise a main part of rectilinear shape and secondary parts which protrude from the main part perpendicularly to the main part claim 3 , and coils being formed by winding on the first ...

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Номер записи: 69
10-01-2019 дата публикации

MAGNETIC FIELD SENSOR

Номер: US20190011287A1
Автор: Schmitt Jochen
Принадлежит:

A magnetic field sensor is disclosed. The magnetic field sensor includes a first magnetoresistive element and a second magnetoresistive element arranged as a half bridge. The magnetic field sensor also includes two or more conductors adjacent to the first magnetoresistive element and the second magnetoresistive element. The two or more conductors can carry a bias current and a compensation current such that the bias current and the compensation current flow in the same direction adjacent to the first magnetoresistive element while the bias current and the compensation current flow in opposite directions adjacent to the second magnetoresistive element. 1. A magnetic field sensor comprising:a first magnetoresistive element and a second magnetoresistive element arranged as a half bridge; andtwo or more conductors adjacent to the first magnetoresistive element and the second magnetoresistive element, the two or more conductors configured to carry a bias current and a compensation current such that the bias current and the compensation current flow in the same direction adjacent to the first magnetoresistive element while the bias current and the compensation current flow in opposite directions adjacent to the second magnetoresistive element.2. The magnetic field sensor of claim 1 , wherein the magnetic field sensor is configured to sense a magnetic field.3. The magnetic field sensor of claim 1 , wherein the magnetic field sensor is configured to sense a differential magnetic field.4. The magnetic field sensor of claim 1 , wherein the two or more conductors comprise a first conductor configured to carry the bias current and a second conductor configured to carry the compensation current.5. The magnetic field sensor of claim 4 , wherein the first magnetoresistive element and the second magnetoresistive element are included in a magnetoresistive layer claim 4 , and wherein the first conductor and the second conductor are disposed on opposing sides of the magnetoresistive ...

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Номер записи: 70
14-01-2021 дата публикации

CURRENT SENSOR AND METHOD FOR MANUFACTURING CURRENT SENSOR

Номер: US20210011058A1
Автор: KAI Kenji, SUZUKI Kenji
Принадлежит:

Provided is a current sensor for reducing heat generation caused by energization. The current sensor is provided, including: primary terminals; a first magnetic sensor; a primary conductor; and a signal processing IC; wherein the primary conductor has a bend section including: a first region that surrounds at least a part of the first magnetic sensor in planar view and at least a part of which does not face the signal processing IC; and a second region that faces the signal processing IC; wherein the height of the first region is lower than that of the primary terminal, the height of the second region is lower than that of the first region, and the first magnetic sensor is connected to the signal processing IC through conductive wires, on the opposite side from the plane. 1. A current sensor comprising:primary terminals;a first magnetic sensor;a primary conductor that is arranged on the same plane as the primary terminals and that is connected to the primary terminals;a signal processing IC that is arranged on the opposite side from the first magnetic sensor relative to the primary conductor, away from the first magnetic sensor, in planar view; anda wire for connecting the first magnetic sensor and the signal processing IC, stepping over the primary conductor; whereinthe primary conductor has a first region that does not face the wire and a second region that faces the wire; andthe height of the second region is lower than that of the first region.2. The current sensor according to claim 1 , comprising:a plurality of the wires; whereinthe height of the second region that faces one of the plurality of wires and the height of the second region that faces other wires is lower than that of the first region.3. The current sensor according to claim 1 , wherein the first magnetic sensor claim 1 , the signal processing IC claim 1 , the wire claim 1 , a part of the primary terminals claim 1 , and the primary conductor are sealed in a package.4. The current sensor according ...

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Номер записи: 71
14-01-2021 дата публикации

APPARATUS FOR MEASURE OF QUANTITY AND ASSOCIATED METHOD OF MANUFACTURING

Номер: US20210011059A1
Автор: SLIVNIK Tomaz
Принадлежит:

An integrated device provides a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor conducting current; an insulating material encapsulates the sensing and processing sub-system and maintains the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system. The insulating material insulates the electrical conductor from the sensing and processing sub-system. Sensing and processing sub-system sensing circuitry includes magnetic field sensing elements adjacent the electrical conductor. The sensing circuitry provides a measure of the quantity as a weighted sum and/or difference of magnetic field sensing elements outputs caused by current through the electrical conductor adjacent the magnetic field sensing elements. A voltage sensing input senses a measure of voltage associated with the current conductor. Sensing and processing sub-system output circuitry provides an output measure of the quantity from the sensed measure of current and voltage. 1. An integrated device for providing a measure of at least one quantity dependent on the current through an electrical conductor , the device comprising:a sensing and processing sub-system comprising at least a sensing face arranged to be placed in proximity to an electrical conductor conducting a current, the sensing face comprising sensing circuitry, the sensing circuitry comprising at least one magnetic field sensing element and configured to measure the quantity as a combination of outputs of the at least one magnetic field sensing element caused by the current flowing through the electrical conductor;a voltage sensing input for sensing a measure of a voltage; andinput-output circuitry arranged to provide an output measure of at least one quantity from the sensed current and the sensed voltage,wherein one or more of the at least one magnetic field sensing element is arranged to be biased by a ...

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Номер записи: 72
14-01-2021 дата публикации

MAGNETIC FIELD SENSOR WITH STRAY FIELD IMMUNITY AND LARGE AIR GAP PERFORMANCE

Номер: US20210011097A1
Автор: David Paul A., Dehu Damien, Eagen Jeffrey, Lassalle-Balier Rémy
Принадлежит: Allegro Microsystems, LLC

A system includes a ring magnet having magnetic segments and configured to rotate about an axis of rotation, wherein adjacent segments have different magnetic polarities, The system can further include a substrate positioned so that a top surface of the substrate is substantially parallel to the axis of rotation and a center plane passing through the ring magnet and perpendicular to the axis of rotation of the ring magnet intersects the top surface at an intersection line. The system can further include four magnetic field sensing elements supported by the substrate and electrically coupled to form a first bridge circuit, wherein two of the four magnetic field sensing elements are positioned on one side of the intersection line and the other two of the four magnetic field sensing elements are positioned on the other side of the intersection line.

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Номер записи: 73
09-01-2020 дата публикации

CURRENT SENSOR

Номер: US20200011902A1
Автор: SHIMIZU Yasuhiro
Принадлежит:

A current sensor includes a conductor through which a current as a measurement target flows and two magnetic sensors. The conductor includes a first flow path, a second flow path adjacent to or in a vicinity of the first flow path in a width direction of the first flow path, and a first joining portion in which the first flow path and the second flow path merge with each other. The two magnetic sensors are provided side by side in a width direction and detect magnetic fields produced by currents that flow through the conductor. The conductor is provided with a first notch portion, in which a side edge in a farther side portion from the second flow path, of both of side edges of the first flow path in the width direction is notched. 1. A current sensor comprising:a conductor through which a current as a measurement target flows and which includes a first flow path, a second flow path adjacent to or in a vicinity of the first flow path in a width direction of the first flow path, and a first joining portion in which the first flow path and the second flow path merge with each other; andtwo magnetic sensors that detect magnetic fields produced by the current which flows through the conductor and are provided side by side in the width direction; whereinthe conductor includes a first notch portion, in which a side edge in a farther side portion from the second flow path, of both of side edges of the first flow path in the width direction is notched; anda first magnetic sensor of the two magnetic sensors, which is located in a position closer to the first flow path than to the second flow path, is positioned in a vicinity of the side edge on an opposite side to the first notch portion in the first flow path.2. The current sensor according to claim 1 , wherein a width of the first notch portion in the width direction of the first flow path is wider than an interval between the first and second flow paths in the width direction.3. The current sensor according to claim 1 , ...

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Номер записи: 74
15-01-2015 дата публикации

Method of detecting irregular current flow in an integrated circuit device and apparatus therefor

Номер: US20150015240A1
Автор: Anton Rozen, Leonid Fleshel, Michael Priel, Yoav Weizman
Принадлежит: FREESCALE SEMICONDUCTOR INC

A method of detecting irregular high current flow within an integrated circuit (IC) device is described. The method comprises obtaining infrared (IR) emission information for the IC device, identifying at least one functional component within the IC device comprising a high current flow, based at least partly on the obtained IR emission information, obtaining IR emission information for at least one reference component within the IC device, and determining whether the high current flow of the at least one functional component comprises an irregular high current flow based at least partly on a comparison of respective IR emission information for the at least one functional component and the at least one reference component.

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Номер записи: 75
15-01-2015 дата публикации

Current sensor and electric power converter

Номер: US20150015248A1
Автор: Kaoru Torii, Kazunari Moriya, Kenichi Takagi, Kentaro Hirose, Naoto Kikuchi, Yusuke Seo
Принадлежит: Toyota Motor Corp

An art of measuring a current with a suppressed influence of a switching noise is provided. The art disclosed by the present specification is a current sensor that measures an output current of a switching circuit. The current sensor is equipped with a magneto-optical element that is arranged at a current measurement point, a light source that radiates light onto the magneto-optical element, and a light receiver that receives transmitted light or reflected light of the magneto-optical element. The light source radiates light in synchronization with a carrier signal of the switching circuit. Light is radiated in synchronization with the carrier signal, and a current is measured with the aid of the light. Due to synchronization with the carrier signal, the current can be measured at timings other than a switching timing resulting from a PWM signal that is generated on the basis of the carrier signal.

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Номер записи: 76
14-01-2021 дата публикации

Circuit breaker control module

Номер: US20210013709A1
Автор: Sung-Hee Kang
Принадлежит: LS Electric Co Ltd

The circuit breaker control module of the present disclosure comprises: a plurality of semiconductor switching units for blocking current flows of transmission distribution lines or performing switching operations so as to switch the current flow directions; a control unit for controlling the turn-on/turn-off operation of each semiconductor switching unit by transmitting a trip signal to each of the plurality of semiconductor switching units; and a plurality of insulation type signal transmission element units which are provided between the plurality of semiconductor switching units and the control unit such that the semiconductor switching units and the control unit are insulated, and which transmit the trip signal from the control unit to each of the plurality of semiconductor switching units, and thus the presently disclosed circuit breaker control module can reduce the risk of accidents due to an electrical arc and increase the stability and reliability of the control unit.

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Номер записи: 77
03-02-2022 дата публикации

CURRENT SENSING USING PANEL PLANE

Номер: US20220034944A1
Автор: Mittelstadt Chad R.
Принадлежит: Schneider Electric USA, Inc.

An apparatus for sensing current on a conductor of an electrical panel includes at least one sensing system, which comprises a ferromagnetic body and a sensor. The body can be formed of a ferro-magnetic material, such as for example steel. The ferromagnetic body can have two legs, which when placed on a load-side of the electrical panel, is configured to form, together with a back plane of the electrical panel, a magnetic path around the conductor. The ferromagnetic body comprises at least two parts with a first air gap therebetween along the magnetic path. The sensor, which is arranged in the first air gap, is configured to measure a current or other electrical property representative of current on the conductor based on the magnetic field across the first air gap. 1. An apparatus for sensing current on a conductor in an electrical panel , comprising: a ferromagnetic body having two legs, which when placed on a load-side of the electrical panel is configured to form, together with at least a plane of the electrical panel, a magnetic path around the conductor, the ferromagnetic body comprising at least two parts with a first air gap therebetween along the magnetic path, and', 'a sensor, arranged in the first air gap, to measure a current or other electrical property representative of current on the conductor based on the magnetic field across the first air gap., 'at least one sensing system comprising2. The apparatus of claim 1 , wherein the sensor is a Hall effect sensor.3. The apparatus of claim 1 , wherein each of the two parts has a first end and a second end claim 1 , the first ends of the two parts being separated to form the first air gap claim 1 , the second ends being ends of the two legs.4. The apparatus of claim 3 , wherein each of the two parts is formed in an L-shape and the body has a U-shape.5. The apparatus of claim 3 , wherein the first air gap is formed between adjacent side portions of the first ends of the two parts or between adjacent end ...

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Номер записи: 78
03-02-2022 дата публикации

MONOLITHIC GLASS RING AND METHOD FOR OPTICAL CURRENT MEASUREMENTS

Номер: US20220034945A1
Автор: Schuberth Stefan
Принадлежит:

A glass ring for current measurements includes a glass body, which can be disposed around an electrical conductor and has a light entry surface and a light exit surface. The glass ring allows light which enters the glass body through the light entry surface to circulate completely around the conductor in the glass body by reflection on external sides or outer faces of the glass body, the light exiting from the glass body on the light exit surface. The glass ring is formed of a monolithic glass body. A method for optical current measurement includes using a current flow in an electrical conductor to generate an electromagnetic field around the conductor, by which a polarization of a light beam in the glass ring around the conductor, in particular with a plane perpendicular to the longitudinal axis of the conductor, is changed as the light beam circulates around the conductor. 112-. (canceled)13. A glass ring for current measurements , the glass ring comprising:a monolithic glass body configured to be disposed around an electrical conductor, said glass body having a light entry surface, a light exit surface and external sides;said glass body configured to allow light entering said glass body through said light entry surface to completely circulate around the conductor in said glass body due to reflection at said external sides of said the glass body and to allow the light to exit said glass body at said light exit surface.14. The glass ring according to claim 13 , wherein said glass body includes at least one of:two mutually opposite sides each having exactly four corners, ora circular cylindrical through-opening.15. The glass ring according to claim 14 , wherein:said glass body includes first, second, third and fourth sides, and said two mutually opposite sides are fifth and sixth parallel planar sides, orsaid circular cylindrical through-opening extends through said two mutually opposite sides.16. The glass ring according to claim 13 , wherein said glass body is ...

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Номер записи: 79
03-02-2022 дата публикации

MAGNETIC SENSOR CIRCUIT

Номер: US20220034979A1
Автор: HIKICHI Tomoki
Принадлежит: ABLIC Inc.

Provided is a magnetic sensor circuit and includes: a magnetic sensor outputting a first sensor signal based on a magnetic flux density in a first direction; a magnetic sensor outputting a second sensor signal based on a magnetic flux density in a second direction orthogonal to the first direction; a signal processing circuit respectively obtaining a first detection signal and a second detection signal which transition between low and high levels based on the first magnetic sensor signal and the second magnetic sensor signal; a driver outputting a first output voltage based on the first detection signal; a driver outputting a second output voltage based on the second detection signal; and a voltage monitoring circuit generating mode signals whose signal levels transition based on transitions of voltage levels of the first output voltage and the second output voltage input thereto. 1. A magnetic sensor circuit , comprising:a first magnetic sensor which detects a magnetic flux density in a first direction and outputs a first sensor signal based on the detected magnetic flux density in the first direction;a second magnetic sensor which detects a magnetic flux density in a second direction orthogonal to the first direction and outputs a second sensor signal based on the detected magnetic flux density in the second direction;a signal processing circuit which contains a mode signal input port from which mode signals are received, a first sensor signal input port from which the first sensor signal is received, and a second sensor signal input port from which the second sensor signal is received, and which is configured to switch between a normal mode and a test mode in which a predetermined operation different from that of the normal mode is performed, wherein in the normal mode, a first detection signal which transitions between low and high levels is output based on the first sensor signal, while a second detection signal which transitions between low and high levels is ...

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Номер записи: 80
21-01-2016 дата публикации

Current transformer and method for converting a conductor current flowing in an electrical conductor to an output signal

Номер: US20160018444A1
Автор: Christian Heggemann, Hans Schlingmann, Michael GERKENS
Принадлежит: Weidmueller Interface GmbH and Co KG

A current transformer arrangement, and method, include a current sensor for producing a sensor output voltage that is proportional to the input current flowing in a conductor; a first processing branch including a voltage calculating device for calculating the effective voltage value of the sensor output voltage; a second processing branch including a polarity detecting device having an input terminal connected with the current sensor output terminal to produce a polarity signal having one polarity when the conductor input current is either an alternating current, a hybrid current, or a direct current flowing in one direction, and the opposite polarity when the conductor input current is a direct current flowing in the opposite direction; and a multiplier device for modifying the effective voltage value to produce a signed effective voltage having a polarity corresponding with the polarity of the polarity signal. A modifying circuit modifies the signed effective voltage.

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Номер записи: 81
18-01-2018 дата публикации

E-PIN ATTACHED CURRENT MEASUREMENT COIL

Номер: US20180017600A1
Автор: Lenz Mario, Pfahl Wilfried, Werker Stephan
Принадлежит:

The invention, which relates to an arrangement for current measurement at a current lead-through, addresses the problem of specifying an arrangement for current measurement by means of which a reliable, galvanically isolated measurement of motor phase currents can be carried out, wherein the space requirement of the arrangement is reduced. This problem is resolved thereby that the sensor is a measuring coil and that the measuring coil is disposed on the lead-through contact such that it is galvanically isolated from the same. 1. An arrangement for current measurement at a current lead-through , comprising a planar board in which at least one lead-through contact is disposed , wherein between the planar board and the lead-through contact an electrically insulating casting compound is disposed , a sensor for generating a sensor signal and an amplifier configuration for the amplification of the generated sensor signal , wherein the sensor is a measuring coil and wherein the measuring coil is disposed on the lead-through contact such that the measuring coil is galvanically isolated therefrom.2. An arrangement as in claim 1 , wherein on the lead-through contact a coil former is disposed on the lead through contact on which several wire windings forming the measuring coil are applied.3. An arrangement as in claim 1 , wherein on the lead-through contact an annular magnetic support is disposed on the lead through contact around which several wire windings forming the measuring coil are disposed.420. An arrangement according to as in claim 2 , wherein the coil former or the annular magnetic support is disposed tightly on the lead-through contact () using an adhesive or casting compound.5. An arrangement according to claim 2 , wherein the coil former of the measuring coil comprises a synthetic material or Teflon.629. An arrangement according to claim 3 , wherein the annular magnetic support () is comprised of comprises a ferrite or a ferrite alloy with a permeability greater ...

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Номер записи: 82
18-01-2018 дата публикации

ELECTRIC CURRENT SENSOR

Номер: US20180017656A1
Автор: GORAI Nobuaki, Kato Takeshi
Принадлежит: Hitachi Automotive Systems, Ltd.

Provided is an electric current sensor with which it is possible to reduce errors arising between the true value of an alternating current and a current value inferred from a detection signal during detection of the alternating current by the electric current sensor. The electric current sensor is provided with a magnetic flux detection unit for detecting the alternating current by detecting the magnetic flux produced by the alternating current flowing through a bus bar, and a memory for storing settings data based on detection values resulting from the detection of a prescribed calibration current flowing through the bus bar by the magnetic flux detection unit 1. A current sensor comprising:a current detection unit that detects alternating current flowing in a conductor; anda storage unit that stores setting data based on a detection value of predetermined calibration alternating current flowing in the conductor, the detection value being detected by the current detection unit.2. The current sensor according to claim 1 , further comprising:a signal output unit that outputs a detection signal based on the resultant alternating current detected by the current detection unit and the setting data stored in the storage unit.3. The current sensor according to claim 1 , wherein a frequency of the calibration alternating current is determined based on a frequency of the alternating current to be measured.4. The current sensor according to claim 1 , wherein the current detection unit respectively detects the alternating current flowing in a plurality of conductors claim 1 , andwherein the calibration alternating current is multiphase alternating current, and current of respective phases flows in the plurality of conductors.5. The current sensor according to claim 4 , wherein the current sensor is mounted on a power inversion device that includes an inverter circuit including a plurality of switching elements claim 4 , an inverter direct-current terminal electrically ...

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Номер записи: 83
21-01-2016 дата публикации

MULTI-RANGE VOLTAGE SENSOR AND METHOD FOR A VOLTAGE CONTROLLED INTERFACE OF A PLASMA PROCESSING SYSTEM

Номер: US20160020075A1
Автор: Lemson Gary M.
Принадлежит:

A voltage sensor for a voltage controlled interface of a plasma processing system. The voltage sensor receives a RF signal generated by a pickup device. The RF signal is indicative of a RF voltage provided at a substrate in a plasma chamber. The voltage sensor includes first and second dividers corresponding to first and second channels and having first and second capacitance ratios. The dividers receive the RF signal and respectively generate first and second reduced voltage signals. A first output of the first channel outputs a first output signal based on the first reduced voltage signal and while the RF signal is in a first voltage range. A second output of the second channel outputs a second output signal based on the second reduced voltage signal and while the RF signal is in a second voltage range. 1. A voltage sensor configured for a voltage controlled interface of a plasma processing system , wherein the voltage sensor is configured to receive a radio frequency (RF) signal generated by a pickup device , and wherein the received RF signal is indicative of a RF voltage provided at a substrate in a plasma chamber , the voltage sensor comprising:a first divider corresponding to a first channel and having a first capacitance ratio, wherein the first divider is configured to receive the RF signal generated by the pickup device, wherein the first divider generates a first reduced voltage signal;a second divider corresponding to a second channel and having a second capacitance ratio, wherein the second divider is configured to receive the RF signal generated by the pickup device, and wherein the second divider generates a second reduced voltage signal;a first output of the first channel configured to output a first output signal based on the first reduced voltage signal and while the received RF signal is in a first voltage range; anda second output of the second channel configured to output a second output signal based on the second reduced voltage signal and ...

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Номер записи: 84
17-01-2019 дата публикации

CURRENT SENSOR AND CURRENT SENSOR MODULE

Номер: US20190018046A1
Автор: SHIMIZU Yasuhiro
Принадлежит:

A current sensor includes a conductor through which current to be measured flows and which has dimensions in a length direction, a width direction, and a height direction, and first and second magnetic sensors that detect the strength of a magnetic field generated by the current. Each of the first and second magnetic sensors is positioned in an area between first and second conductor portions in the width direction and an area extending from one end to the other end in the height direction of the first and second conductor portions. 1. A current sensor comprising:a conductor through which current to be measured flows and which has dimensions in a length direction, a width direction orthogonal or substantially orthogonal to the length direction, and a height direction orthogonal or substantially orthogonal to the length direction and the width direction; anda first magnetic sensor and a second magnetic sensor that detect a strength of a magnetic field generated by the current; wherein a first conductor portion that extends in the length direction and that includes a first end portion and a second end portion in the length direction;', 'a second conductor portion that extends in the length direction and is spaced apart from the first conductor portion in the width direction and that includes a third end portion and a fourth end portion in the length direction; and', 'a third conductor portion that is positioned between the first conductor portion and the second conductor portion, viewed from the height direction, that is positioned at one side of the height direction with respect to the first conductor portion and the second conductor portion, viewed from the length direction, and that includes a fifth end portion and a sixth end portion in the length direction;, 'the conductor includesthe sixth end portion is connected to the second end portion;the fifth end portion is connected to the third end portion; andeach of the first magnetic sensor and the second magnetic ...

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Номер записи: 85
17-01-2019 дата публикации

Systems and methods for detecting current using a kinetic inductance magnetic current imager

Номер: US20190018078A1
Автор: Robert H. Nelson
Принадлежит: Aerospace Corp

Under one aspect, a method for characterizing current of an operating device under test (DUT) includes injecting a signal into a superconducting sensor; determining a property of the superconducting sensor based on the injected signal; disposing the superconducting sensor in spaced relationship to the operating DUT; inducing a magnetic field in the superconducting sensor based on the spaced relationship, the current of the operating DUT, and the injected signal; determining a change in the property of the superconducting sensor resulting from the induced magnetic field; and estimating current of the operating DUT based on the change in the property of the superconducting sensor.

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Номер записи: 86
17-01-2019 дата публикации

MAGNETIC FIELD SENSOR WITH IMPROVED RESPONSE IMMUNITY

Номер: US20190018081A1
Автор: Eagen Jeffrey, Taylor William P.
Принадлежит: Allegro Microsystems, LLC

A magnetic field sensor includes a plurality of magnetoresistance elements, each having at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel. Illustrative characteristics selected to provide the respective responses include dimensions and/or construction parameters such as materials, layer thickness and order, and spatial relationship of the magnetoresistance element to the applied magnetic field. A method includes providing each of a plurality of magnetoresistance elements with at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel. 1. A magnetic field sensor comprising a plurality of magnetoresistance elements , each having a respective length and width selected to provide a respective , different response to an applied magnetic field , wherein each of the plurality of magnetoresistance elements is coupled in parallel , wherein a width of a first one of the plurality of magnetoresistance elements is different than and a multiple of a width of a second one of the plurality of magnetoresistance elements , and wherein a length of the first one of the plurality of magnetoresistance elements is the same as a length of the second one of the plurality of magnetoresistance elements.2. The magnetic field sensor of claim 1 , wherein the respective claim 1 , different responses of the plurality of magnetoresistance elements to the applied magnetic field differ in linearity.3. The magnetic field sensor of claim 1 , wherein each of the plurality of magnetoresistance elements has a substantially similar resistance when the applied magnetic field has a magnetic field strength of about zero Gauss.4. The magnetic field sensor of claim 1 , wherein at least one of the plurality of magnetoresistance elements ...

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Номер записи: 87
16-01-2020 дата публикации

Current Sensor Using Modulation of or Change of Sensitivity of Magnetoresistance Elements

Номер: US20200018780A1
Автор: Belin Noémie, Cadugan Bryan, Campiglio Paolo, Lassalle-Balier Rémy, Latham Alexander
Принадлежит: Allegro Microsystems, LLC

A current sensor can indirectly measure a sensed current by directly measuring static perturbing AC magnetic fields with magnetoresistance elements, the perturbing magnetic fields generated by perturbing coils. The sensed current can be indirectly measured by modulating or changing sensitivities of the magnetoresistance elements in a way that is directly related to the sensed current. 1. A magnetic field sensor , comprising:a first magnetoresistance element having a first maximum response axis and having a first pinning layer with a first magnetic direction perpendicular to the first maximum response axis;a second magnetoresistance element having a second maximum response axis parallel to the first maximum response axis and having a second pinning layer with a second magnetic direction perpendicular to the second maximum response axis;a first magnetic field generator disposed proximate to the first magnetoresistance element, the first magnetic field generator configured to generate a first AC magnetic field experienced by the first magnetoresistance element and parallel to the first maximum response axis; anda second magnetic field generator disposed proximate to the second magnetoresistance element, the second magnetic field generator configured to generate a second AC magnetic field experienced by the second magnetoresistance element and parallel to the second maximum response axis, a first current conductor portion disposed proximate to the first magnetoresistance element; and', 'a second current conductor portion disposed proximate to the second magnetoresistance element, wherein the first current conductor portion is configured to generate a first current conductor magnetic field experienced by the first magnetoresistance element in response to the sensed current passing through the current conductor, wherein the second current conductor portion is configured to generate a second current conductor magnetic field experienced by the second magnetoresistance ...

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Номер записи: 88
16-01-2020 дата публикации

Electric current sensor

Номер: US20200018804A1
Автор: Ken Okuyama, Naoki FUTAKUCHI, Yujiro TOMITA
Принадлежит: Hitachi Metals Ltd

An electric current sensor includes a plate-like shape bus bar, through which an electric current to be detected is to be passed, one pair of shield plates, which are made of a magnetic material and disposed in such a manner as to sandwich the bus bar between the one pair of the shield plates in a thickness direction of the bus bar, a magnetic detection element, which is disposed between the bus bar and one of the shield plates to detect a strength of a magnetic field to be produced by the electric current to be passed through the bus bar, a core, which is made of a magnetic material and disposed between the one pair of the shield plates, and a winding, which includes one part wound around the core, and an other part wound around either of the shield plates.

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Номер записи: 89
21-01-2021 дата публикации

Device And Method For Detecting High-Voltage Power Distribution Line Path Having Improved Stability

Номер: US20210018540A1
Автор: Hyun Chang Lee
Принадлежит: Individual

In an exemplary embodiment of the present disclosure for solving the problem, disclosed is a stability-improved high voltage power line path exploration apparatus. The stability-improved high voltage power line path exploration apparatus for tracking a high voltage power line and determining a buried path and a connection configuration up to a final power source of a power distribution system, wherein the high voltage power line is connected to a primary winding of a distribution transformer to supply voltage and current, wherein the distribution transformer converts high voltage for distribution to low voltage in proportion to a ratio of a winding combination may include: an exploration current generator for generating a current pulse signal in inverse proportion to a winding ratio for detecting a magnetic field signal around the high voltage power line, in which the exploration current generator is connected to a secondary winding of the distribution transformer; a buried path probe for tracking the buried path and connection configuration of the high voltage power line by detecting the magnetic field signal which is generated around the high voltage power line when the current pulse signal flows through the high voltage power line; and a reverse current limiter for suppressing a generation of a reverse magnetic field generated by an external conductor of the high voltage power line, to improve a reception performance of the buried path probe.

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Номер записи: 90
21-01-2021 дата публикации

Methods and Apparatus For Frequency Effect Compensation In Magnetic Field Current Sensors

Номер: US20210018573A1
Автор: Messier Loïc André, Vuillermet Yannick
Принадлежит: Allegro Microsystems, LLC

A current sensor is provided with one or more magnetic field sensing elements configured to generate a magnetic field signal indicative of a magnitude of a sensed magnetic field, wherein the sensed magnetic field is related to a magnitude and frequency of a current through a conductor. A signal path is responsive to the magnetic field signal and includes a compensator configured to apply a compensation factor to the magnetic field signal to generate a sensor output signal indicative of the magnitude of the current and substantially independent of a frequency of the current. The sensed magnetic field is related to the magnitude of the current by a coupling factor and the signal path is responsive to a characterization of the coupling factor over a range of frequencies of the current in order to determine the compensation factor to be applied. 1. A current sensor comprising:one or more magnetic field sensing elements configured to generate a magnetic field signal indicative of a magnitude of a sensed magnetic field, wherein the sensed magnetic field is related to a magnitude and frequency of a current through a conductor; anda signal path responsive to the magnetic field signal and comprising a compensator configured to apply a compensation factor to the magnetic field signal to generate a sensor output signal indicative of the magnitude of the current and substantially independent of a frequency of the current.2. The current sensor of claim 1 , wherein the sensed magnetic field is related to the magnitude of the current by a coupling factor and wherein the signal path is responsive to a characterization of the coupling factor over a range of frequencies of the current in order to determine the compensation factor to be applied.3. The current sensor of claim 2 , wherein the characterization of the coupling factor is generated based on one or both of simulating operation of the current sensor or testing of the current sensor.4. The current sensor of claim 2 , further ...

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Номер записи: 91
22-01-2015 дата публикации

CURRENT SENSOR

Номер: US20150022196A1
Автор: HEBIGUCHI Hiroyuki, Sato Isao
Принадлежит:

A current sensor includes a folded-shaped current path including a pair of arm portions extending in parallel with each other, and a pair of magnetoelectric conversion elements provided so as to sandwich therebetween a symmetric axis passing between the pair of arm portions, the pair of magnetoelectric conversion elements being used for detecting magnetism caused by a current passing through the pair of arm portions, wherein a half-bridge circuit in which the pair of magnetoelectric conversion elements is series-connected and a signal is able to be extracted from a connection point between the pair of magnetoelectric conversion elements is formed, and sensitivity axes of the pair of magnetoelectric conversion elements are oriented in a same direction and sensitivity-influencing axes of the pair of magnetoelectric conversion elements are oriented in a same direction. 1. A current sensor comprising:a folded-shaped current path including a pair of arm portions extending in parallel with each other; anda pair of magnetoelectric conversion elements provided so as to sandwich therebetween a symmetric axis passing between the pair of arm portions, the pair of magnetoelectric conversion elements being used for detecting magnetism caused by a current passing through the pair of arm portions, whereina half-bridge circuit in which the pair of magnetoelectric conversion elements is series-connected and a signal is able to be extracted from a connection point between the pair of magnetoelectric conversion elements is formed, andsensitivity axes of the pair of magnetoelectric conversion elements are oriented in a same direction and sensitivity-influencing axes of the pair of magnetoelectric conversion elements are oriented in a same direction.2. The current sensor according to claim 1 , whereinthe sensitivity-influencing axes of the magnetoelectric conversion elements are oriented in a direction of a bias magnetic field.3. The current sensor according to claim 1 , whereinthe two ...

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Номер записи: 92
18-01-2018 дата публикации

Method for manufacturing a printed circuit board element and printed circuit board element

Номер: US20180020552A1
Автор: KHOSHAMOUZ Ali
Принадлежит:

The method for manufacturing a printed circuit board element () having an inlay () and a current sensor () for determining a current flowing in the inlay (), wherein, for the improvement of the positional accuracy of the inlay () relative to the current sensor (), the method comprises the following steps: 1. A method for manufacturing a printed circuit board element having an inlay and a current sensor for determining a current flowing through the inlay , wherein , for the improvement of the positional accuracy of the inlay relative to the current sensor , the method comprises the following steps:providing a layer of printed circuit board material having a recess;providing an inlay having an inlay outline;inserting the inlay in the recess;embedding the inlay in the recess;completing and laminating the layered printed circuit board structure;applying at least two alignment markings on an uppermost printed circuit board layer;forming a defined cross-section tapering on the inlay outline, the tapering being aligned with the at least two alignment markings;applying an assembly marking for a current sensor on an uppermost printed circuit board layer, the assembly marking being aligned with the at least two alignment markings.2. The method according to claim 1 , wherein between the steps of forming the cross-section tapering and applying the current sensor claim 1 , further printed circuit board layers are applied and laminated.3. The method according to claim 1 , wherein forming of the cross-section tapering is performed by means of milling claim 1 , laser cutting or similar.4. The method according to claim 1 , wherein the embedding of the inlay is performed by means of lamination claim 1 , compression or the like.5. The method according to claim 1 , wherein the cross-section tapering is performed by means of at least one indentation or slot.6. The method according to claim 5 , wherein the cross-section tapering is performed by means of a single-sided indentation or slot ...

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Номер записи: 93
26-01-2017 дата публикации

SENSOR FOR DETECTING/MEASURING THE WELDING AND/OR CUTTING CURRENT IN A WELDING AND/OR CUTTING SYSTEM

Номер: US20170021441A1
Автор: IMI Attilio, SIMIONI Ugo
Принадлежит: TRAFIMET GROUP S.P.A.

The invention is a sensor () for welding and/or cutting systems comprising a generator (), a welding and/or cutting torch () and a connection element () comprising one or more power supply cables (lib) of the torch and/or one or more control cables of the torch; the sensor () is such that it is suited to detect the passage of current in at least one of said one or more cables of the connection element (); the sensor () is such that it comprises a ferromagnetic circuit () that at least partially envelops said at least one of said one or more cables of the connection element () and a Hall sensor (). The invention furthermore concerns a welding and/or cutting unit comprising a current sensor (). 11541401111111540194018ba. Sensor () for welding and/or cutting systems comprising a generator () , a welding and/or cutting torch () and a connection element () comprising one or more power supply cables () of said torch () and/or one or more control cables () of said torch (); said sensor () being characterized in that it is suited to detect the passage of current in at least one of said one or more cables of said connection element (); and said sensor being characterized in that it comprises a ferromagnetic circuit () that at least partially envelops said at least one of said one or more cables of said connection element () and a Hall sensor ().21511b. Sensor () according to claim 1 , characterized in that it is suited to measure the intensity of said current that flows through said one or more power supply cables ().31519. Current sensor () according to any of the preceding claims claim 1 , characterized in that said ferromagnetic circuit () comprises one or more C-shaped elements.4151111b. Current sensor () according to claim 3 , characterized in that said one or more C-shaped elements at least partially envelop/envelops said one or more power supply cables () of said torch () or parts of said torch body ().5151719. Current sensor () according to any of the preceding ...

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Номер записи: 94
22-01-2015 дата публикации

Collimator holder for electro-optical sensor

Номер: US20150023629A1
Автор: Philip B. Davis, Ye Li
Принадлежит: Gridview Optical Solutions LLC

A collimator holder in the form of a glass or ceramic block that has precisely machined holes formed in the block to receive respective collimator assemblies. Each collimator assembly includes an optical fiber attached to a GRIN lens by a ferrule. Optionally, each collimator assembly can include a glass tube that surrounds at least the lens and optionally part or all of the ferrule. The lens or the tube is inserted into the hole and bonded therein by an epoxy. The block, together with the collimator assemblies installed, is bonded to the bottom surface of a crystal assembly thereby forming an electro-optic sensor. The crystal assembly can include one or more polarizing beam splitters, an electro-optic crystal, and a prism, configured to sense a current through a current-carrying cable or a voltage between the cable and another potential.

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Номер записи: 95
10-02-2022 дата публикации

Current sensor

Номер: US20220043034A1
Автор: Hiromu Kinoshita, Takashi Hara, Tomoya Tanaka
Принадлежит: Aisin Corp

A current sensor configured to measure a current value of a current flowing through each of a first conductor, a second conductor, and a third conductor, the current sensor comprising: first to third magnetic detection units provided with detection surfaces and configured to output first to third detection result; first to third amplification factor correction units configured to correct first to third amplification factors set in advance based on an ambient temperature; first to third amplifiers configured to amplify the detection results based on the corrected amplification factors and output the amplified detection results as amplified signals; first to third influence degree correction units indicating influence degrees of the magnetic fields generated by the current flowing through the conductors; and first to third correction units configured to correct the amplified signals based on the corrected influence degrees and the amplified signals.

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Номер записи: 96
24-01-2019 дата публикации

SYSTEMS AND METHODS FOR CLOSED LOOP CURRENT SENSING

Номер: US20190025346A1
Автор: Latham Alexander
Принадлежит: Allegro Microsystems, LLC

A current sensor for sensing a direct magnetic field generated by a current through a conductor includes at least one first magnetic field sensing element spaced from at least one second magnetic field sensing element, with the magnetic field sensing elements configured to sense the direct magnetic field at different magnitudes. The direct magnetic field has a first direct coupling factor with respect to the at least one first magnetic field sensing element and a second direct coupling factor with respect to the at least one second magnetic field sensing element. A feedback conductor configured to carry a feedback current generates a feedback magnetic field that has a first feedback coupling factor with respect to the at least one first magnetic field sensing element and a second feedback coupling factor with respect to the at least one second magnetic field sensing element. A circuit generates the feedback current based on the direct and feedback magnetic fields and a sense element senses the feedback current. 1. A current sensor for sensing a direct magnetic field generated by a current through a primary conductor comprising:a plurality of magnetic field sensing elements comprising at least one first magnetic field sensing element spaced from at least one second magnetic field sensing element, wherein the at least one first magnetic field sensing element and the at least one second magnetic field sensing element are configured to sense the direct magnetic field at different magnitudes, the direct magnetic field having a first direct coupling factor with respect to the at least one first magnetic field sensing element and a second direct coupling factor with respect to the at least one second magnetic field sensing element;a feedback conductor configured to carry a feedback current generating a feedback magnetic field, the feedback magnetic field having a first feedback coupling factor with respect to the at least one first magnetic field sensing element and a ...

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Номер записи: 97
24-01-2019 дата публикации

POWER MEASUREMENT SYSTEM

Номер: US20190025347A1
Автор: HUI SHU YUEN, RON, YANG HAOYUAN
Принадлежит:

A method and an apparatus of estimating power using a plurality of branch load circuits associated with a mains three phase power supply, comprises: a voltage sensor () coupled to a mains power supply; a non-intrusive magnetic flux sensor array () coupled to a plurality of branch load circuits (), the branch load circuits () coupled to the main power supply; and a computing device coupled to the voltage sensor () and the non-intrusive magnetic flux sensor array (), in which a set of current-flux conversion values are to be stored in memory of the computing device. 1. A method of estimating power using a plurality of branch load circuits associated with a mains three phase power supply , comprising:selecting a power line voltage phase of the mains three phase power supply to sample voltage measurements;using a non-intrusive sensor array to measure magnetic flux generated by the plurality of branch load circuits;sampling voltage measurements of the selected power line voltage phase;synchronizing the measured magnetic flux to the sampled voltage measurements; andcalculating a power estimate from the measured magnetic flux and the sampled voltage measurements.2. The method of claim 1 , wherein the using a non-intrusive sensor array to measure magnetic flux generated by the plurality of branch load circuits comprises:collocating the sensor array in proximity to the branch load circuits such that respective sensor of the sensor array is at least approximately closer to a portion of a corresponding respective branch load circuit than to the remainder of the plurality of branch load circuits; andmeasuring the magnetic flux detected at the respective sensor.3. The method of claim 1 , wherein the selecting a power line voltage phase of the mains three phase power supply to sample voltage measurements comprises:sampling above a Nyquist frequency.4. The method of claim 3 , wherein the sampling above a Nyquist frequency comprises sampling at a frequency sufficient for a ...

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Номер записи: 98
24-01-2019 дата публикации

APPARATUS FOR MEASURE OF QUANTITY AND ASSOCIATED METHOD OF MANUFACTURING

Номер: US20190025348A1
Автор: SLIVNIK Tomaz
Принадлежит:

An integrated device provides a measure of a quantity dependent on current through an electrical conductor, having: a sensing and processing sub-system; an electrical conductor conducting current; an insulating material encapsulates the sensing and processing sub-system and maintains the electrical conductor in a fixed and spaced relationship to the sensing and processing sub-system. The insulating material insulates the electrical conductor from the sensing and processing sub-system. Sensing and processing sub-system sensing circuitry includes magnetic field sensing elements adjacent the electrical conductor. The sensing circuitry provides a measure of the quantity as a weighted sum and/or difference of magnetic field sensing elements outputs caused by current through the electrical conductor adjacent the magnetic field sensing elements. A voltage sensing input senses a measure of voltage associated with the current conductor. Sensing and processing sub-system output circuitry provides an output measure of the quantity from the sensed measure of current and voltage. 1. An integrated device for providing a measure of at least one quantity dependent on the current through an electrical conductor , comprising:a sensing and processing sub-system comprising at least a sensing face arranged to be placed adjacent to an electrical conductor conducting a current, the sensing face comprising sensing circuitry comprising a plurality of magnetic field sensing elements and configured to measure the quantity as a combination of outputs of the magnetic field sensing elements caused by the current flowing through the electrical conductor adjacent to the plurality of magnetic field sensing elements;a voltage sensing input for sensing a measure of a voltage; andinput-output circuitry arranged to provide an output measure of at least one quantity from the sensed current and sensed voltage.2. An integrated device of claim 1 , where the combination of outputs is a linear combination ...

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Номер записи: 99
24-01-2019 дата публикации

CURRENT DETECTION DEVICE

Номер: US20190025349A1
Автор: FUKUHARA Toshiaki, SEI Makoto
Принадлежит: Yazaki Corporation

Provided is a current detecting device capable of lowering manufacturing cost, including a strip-like bus bar, a magnetic field detection element, a magnetic member, and a housing that holds these components. The magnetic member includes a bottom plate portion, and a pair of standing wall portions erected from both end portions in the width direction of the bottom plate portion. The pair of standing wall portions positions therebetween the bus bar and the magnetic field detecting element. The housing is provided with a locking arm for retaining the magnetic member. The locking arm is provided with an arm portion configured to be located between the standing wall portion and the bus bar and elastically deformable in an opposing direction of the standing wall portions, and a locking portion protruding from a tip of the arm portion and is configured to engage with the standing wall portion. 2. The current detection device according to claim 1 , whereinthe locking portion is provided with a contact portion configured to contact the standing wall portion and forming an obtuse angle with the arm portion.3. The current detection device according to claim 1 , whereinthe locking arm includes a protruding portion protruding from the arm portion and configured to abut against the bus bar.4. The current detection device according to claim 2 , whereinthe locking arm includes a protruding portion protruding from the arm portion and configured to abut against the bus bar.5. The current detection device according to claim 1 , whereinthe standing wall portion is provided with a cutout portion extending from a tip of the standing wall portion toward the bottom plate portion, and the locking portion is configured to engage with the cutout portion.6. The current detection device according to claim 2 , whereinthe standing wall portion is provided with a cutout portion extending from a tip of the standing wall portion toward the bottom plate portion, and the locking portion is configured ...

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Номер записи: 100