Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 1522. Отображено 100.
24-05-2012 дата публикации

Method and apparatus for non-destructive evaluation of materials

Номер: US20120126803A1
Автор: Andrew P. Washabaugh, Christopher Martin, Daivd A. Jablonski, Neil J. Goldfine, Robert Lyons, Zachary Thomas
Принадлежит: Jentek Sensors Inc

Methods and apparatus for characterizing composite materials for manufacturing quality assurance (QA), periodic inspection during the useful life, or for forensic analysis/material testing. System are provided that relate eddy-current sensor responses to the fiber layup of a composite structure, the presence of impact damage on a composite structure with or without a metal liner, volumetric stress within the composite, fiber tow density, and other NDE inspection requirements. Also provided are systems that determine electromagnetic material properties and material dimensions of composite materials from capacitive sensor inspection measurements. These properties are related to the presence of buried defects in non-conductive composite materials, moisture ingress, aging of the material due to service or environmental/thermal exposure, or changes in manufacturing quality.

Подробнее
Номер записи: 1
06-09-2012 дата публикации

Multiple dimension position sensor

Номер: US20120223597A1
Автор: Alexander Krupyshev, Christopher Hofmeister, John F. Zettler, Krzystof Majczak, Martin Hosek, Sergei Syssoev
Принадлежит: Brooks Automation Inc

An apparatus including a controller, a workpiece transport in communication with the controller having a movable portion and a transport path, and a multi-dimensional position measurement device including at least one field generating platen attached to the movable portion and at least one sensor group positioned along the transport path and in communication with the controller, the field generating platen is configured for position measurement and propelling the movable portion, each sensor in the at least one sensor group is configured to provide but one output signal along a single axis corresponding to a sensed field generated by the at least one field generating platen and the controller is configured calculate a multi-dimensional position of the movable portion based on the but one output signal of at least one of the sensors in the at least one sensor group, the multi-dimensional position including a planar position and a gap measurement.

Подробнее
Номер записи: 2
13-09-2012 дата публикации

Systems and methods for high-throughput detection of an analyte in a sample

Номер: US20120231960A1
Автор: Sebastian J. Osterfeld, Shan X. Wang
Принадлежит: MagArray Inc

Provided are high-throughput detection systems. The systems include a magnetic sensor device, a magnetic field source and a reservoir plate that includes a plurality of fluid reservoirs. The magnetic sensor device includes a support with two or more elongated regions each having a magnetic sensor array disposed at a distal end. Also provided are methods in which the subject high-throughput detection systems find use.

Подробнее
Номер записи: 3
23-05-2013 дата публикации

Smart Electromagnetic Sensor Array

Номер: US20130127448A1
Автор: Bras Jaroslaw, Hyacinthe John Wesley
Принадлежит: FLUKE CORPORATION

An array of induction coil sensors is used to monitor, from multiple locations, the strength of a magnetic field generated by a wire to be traced. The magnetic field strength data is used to determine the location and orientation of the wire. In one embodiment, the sensor array is incorporated into a test instrument. The screen of the test instrument provides a graphical user interface that shows the orientation of the wire and indicates the location of the wire relative to the instrument. 1. A system for determining a location and an orientation of a wire , the system comprising:a plurality of sensors configured to sense a strength of a magnetic field induced by a signal in the wire at a plurality of locations;a processor configured to determine the location and orientation of the wire relative to the plurality of sensors based upon the sensed strength of the magnetic field at the plurality of locations and provide the determined location and orientation of the wire to a user.2. The system of claim 1 , wherein the plurality of sensors are induction coil sensors.3. The system of claim 1 , wherein the plurality of sensors comprises four induction coil sensors claim 1 , wherein one of the four sensors is positioned at or near a midpoint of each of the four sides of a square.4. The system of claim 1 , wherein the plurality of sensors are positioned substantially equidistant around a circle.5. The system of claim 1 , wherein the plurality of sensors comprises three sensors positioned substantially at the vertices of a triangle.6. The system of claim 1 , further comprising a display configured to display the determined location and orientation of the wire relative to the plurality of sensors.7. The system of claim 1 , further comprising:a transmitter configured to transmit the signal down the wire, wherein the signal is modulated at a signal frequency;a plurality of filters each configured to receive an electrical signal from one of the plurality of sensors and transmit ...

Подробнее
Номер записи: 4
05-12-2013 дата публикации

CURRENT SENSOR

Номер: US20130320968A1
Автор: PENG Shidi, SAKAMOTO Akinori
Принадлежит: Yazaki Corporation

A current sensor is disclosed which detects current values of bus bars through which three phase alternating currents flow, including shields which are provided for each of the bus bars, a flat board on which magnetic detecting elements corresponding to respective phases are mounted, and a housing inside which the shields and the board are accommodated, wherein the housing is formed with storage parts to store the shield, the board is formed with concave parts recessed in a direction opposite to the direction the board is assembled, the shields are formed with cut parts recessed in the direction the board is assembled, at parts that intersect with the board when the shields and the board are accommodated, and when the shields and the board are accommodated, a part of the board is located in the cut parts, and a part of the shields is located in the concave parts. 1. A current sensor which detects current values of bus bars through which three phase alternating currents flow , respectively , comprisingshields which are provided for each of the bus bars,a flat board on which magnetic detecting elements corresponding to respective phases are mounted, anda housing inside which the shields and the board are accommodated,whereinthe housing is formed with storage parts in which the shield are stored,the board is formed with concave parts that are recessed in a direction opposite to the direction the board is assembled to the housing,the shields are formed with cut parts that are recessed in the direction the board is assembled to the housing, at parts that intersect with the board when the shields and the board are accommodated inside the housing, andwhen the shields and the board are accommodated inside the housing, a part of the board is located in the cut parts of the shields, and a part of the shields is located in the concave parts of the board.2. The current sensor according to claim 1 , whereinthe housing is provided with through holes through which the bus bars are ...

Подробнее
Номер записи: 5
26-12-2013 дата публикации

Magnetic-field detecting device

Номер: US20130342197A1
Автор: Satoshi Atsuta, Shinsuke Nakayama, Tsuyoshi Uchiyama
Принадлежит: Fujidenolo Co Ltd, Nagoya University NUC

A magnetic-field detecting device includes a pair of magneto-sensors including respective magnetism sensing portions that sense magnetism, and respective coils sensing changes of magnetic fluxes in the magnetism sensing portions, and an elongate connecting member cooperating with the magnetism sensing portions to constitute a magnetic circuit. A magnetism sensing direction of the magnetism sensing portions coincides with a longitudinal direction of the connecting member to an extent that permits the coils to equally sense a magnetic field applied to the coils the connecting member being formed of a magnetic material having a relative magnetic permeability of at least 100, a magnetic material having a relative magnetic permeability which is at least 1/100 of that of a magnetic material of the magnetism sensing portions, or the same magnetic material as the magnetism sensing portions the magnetic-field sensor measuring the magnetism on the basis of a difference between outputs of the coils.

Подробнее
Номер записи: 6
04-01-2018 дата публикации

Apparatus and method using a plurality of magnetic field sensitive devices

Номер: US20180003780A1
Автор: Udo Ausserlechner
Принадлежит: INFINEON TECHNOLOGIES AG

An apparatus for magnetic field detection comprises a plurality of magnetic field sensitive devices comprising at least a first magnetic field sensitive device, a second magnetic field sensitive device and a third magnetic field sensitive device. The apparatus comprises a power source configured to provide a first supply current through the first magnetic field sensitive device and a second supply current independent of the first supply current through the second magnetic field sensitive device. The first to third magnetic field sensitive devices are coupled such that the first supply current flows through the first magnetic field sensitive device and not through the second magnetic field sensitive device, the second supply current flows through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and a sum of the first supply current and the second supply current flows through the third magnetic field sensitive device.

Подробнее
Номер записи: 7
02-01-2020 дата публикации

Magnetic field measuring device, magnetic field measurement method, and recording medium having recorded thereon magnetic field measurement program

Номер: US20200003846A1
Автор: Kazuhiro Ishida, Masanori Masuda
Принадлежит: Asahi Kasei Microdevices Corp

A magnetic field measuring device that can measure a weaker magnetic field is provided. The magnetic field measuring device provided includes: a sensor unit that has at least one magnetoresistive element; a magnetic field generating unit that generates a magnetic field to be applied to the sensor unit; a feedback current generating unit that supplies, based on an output voltage of the sensor unit, the magnetic field generating unit with a feedback current that generates a feedback magnetic field to diminish an input magnetic field to the sensor unit; a magnetic field measuring unit that outputs a measurement value corresponding to the feedback current; and a magnetic resetting unit that makes the magnetic field generating unit generate a reset magnetic field that magnetically saturates the magnetoresistive element.

Подробнее
Номер записи: 8
02-01-2020 дата публикации

STRAY FIELD SUPPRESSION IN MAGNETIC SENSOR WHEATSTONE BRIDGES

Номер: US20200003849A1
Автор: GUETTINGER Johannes, Hainz Simon, Satz Armin
Принадлежит: INFINEON TECHNOLOGIES AG

A magnetic sensor includes a bridge circuit including a plurality of magnetic field sensor elements, each configured to generate a sensor signal in response to the magnetic field impinging thereon, where the bridge circuit is configured to generate a differential signal based on sensor signals generated by the plurality of magnetic field sensor elements. The bridge circuit further includes a plurality of resistors, where at least one resistor of the plurality of resistors is coupled in parallel to each of the plurality of magnetic field sensor elements. 1. A magnetic sensor , comprising:a bridge circuit comprising a plurality of magnetic field sensor elements, each configured to generate a sensor signal in response to the magnetic field impinging thereon, wherein the bridge circuit is configured to generate a differential signal based on sensor signals generated by the plurality of magnetic field sensor elements,wherein the bridge circuit further comprises a plurality of resistors, wherein at least one resistor of the plurality of resistors is coupled in parallel to each of the plurality of magnetic field sensor elements.2. The magnetic sensor of claim 1 , wherein a conductance of each of the plurality of magnetic field sensor elements is substantially the same.3. The magnetic sensor of claim 1 , wherein the plurality of magnetic field sensor elements are magnetoresistive sensor elements sensitive to a same magnetic field component of the magnetic field and each having a reference magnetization aligned in a same sensing direction.4. The magnetic sensor of claim 1 , wherein the bridge circuit further comprises a first plurality of parallel branches including a first plurality of resistors of the a plurality of resistors and a first plurality of switches claim 1 , wherein each parallel branch of the first plurality of parallel branches includes a corresponding first resistor of the first plurality of resistors and a corresponding first switch of the first plurality of ...

Подробнее
Номер записи: 9
03-01-2019 дата публикации

DETECTION OF REPLAY ATTACK

Номер: US20190005964A1
Автор: Lesso John Paul
Принадлежит: Cirrus Logic International Semiconductor Ltd.

In order to detect a replay attack in a speaker recognition system, at least one feature is identified in a detected magnetic field. It is then determined whether the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker. If so, it is determined that a replay attack may have taken place. 1. A method of detecting a replay attack in a speaker recognition system , the method comprising:identifying at least one feature of a detected magnetic field;determining whether the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker; andif so, determining that a replay attack may have taken place,wherein the step of identifying at least one feature of the detected magnetic field comprises:receiving a signal from a magnetometer; anddetecting modulation of the at least one feature from the received signal from the magnetometer at one or more of:at least one frequency in the range of 2 Hz-10 Hz;a speech syllabic rate; and/oran articulation rate.2. A method as claimed in claim 1 , further comprising:receiving an audio signal representing speech, wherein the audio signal is received at substantially the same time as the magnetic field is detected; andif it is determined that the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker, determining that the audio signal may result from said replay attack.3. A method as claimed in claim 1 , wherein the step of identifying at least one feature of the detected magnetic field comprises:receiving a signal from a magnetometer; andperforming a Discrete Fourier Transform on the received signal from the magnetometer.4. A method as claimed in claim 1 , comprising determining whether a detected pattern of variability of the magnetic field is indicative of a reference pattern associated with playback of a predetermined spoken phrase through a ...

Подробнее
Номер записи: 10
14-01-2016 дата публикации

MAGNETIC FIELD SENSOR DEVICE

Номер: US20160011279A1
Автор: Rasbornig Friedrich, Satz Armin, Schroers Christoph
Принадлежит:

Devices, methods and systems are disclosed using a first magnetic field sensor of a first type and a second magnetic field sensor of a second type different from the first type. A signal from the first sensor may be used in a first magnetic field, range, and a signal from the second sensor may be used in a second magnetic field range. 1. A magnetic field sensor device , comprising:a first magnetic field sensor of a first type,a second magnetic field sensor of a second type different from the first type, andsignal processing circuitry, the signal processing circuitry being adapted to determine a magnetic field strength based on an output signal of the first magnetic field sensor in a first magnetic field strength range and based on an output signal of the second magnetic field sensor in a second magnetic field strength range different from the first magnetic field strength range.2. The device of claim 1 , wherein the first magnetic field sensor comprises an XMR sensor.3. The device of claim 2 , wherein the second magnetic field sensor comprises a Hall sensor.4. The device of claims 1 , wherein the second range comprises magnetic field strength values greater than magnetic field strength values of the first range.5. The device of claim 1 , wherein the sensor signal processing circuitry is adapted to obtain information regarding a distance between the sensor device and a magnetic element based on the magnetic field strength.6. The device of claim 1 , wherein the sensor signal processing circuitry is adapted to check the output signals from the first and second magnetic field sensors for consistency.7. The device of claim 1 , wherein the sensor signal processing circuitry is adapted to obtain at least one of a speed Information or a direction information from the output signal of the first magnetic field sensor.8. The device of claim 7 , further comprising a third magnetic field sensor claim 7 , wherein the sensor signal processing circuitry is adapted to obtain at ...

Подробнее
Номер записи: 11
14-01-2021 дата публикации

Detachable arrangement for on-scalp magnetoencephalography (meg) calibration

Номер: US20210011094A1
Автор: Zachary Bednarke
Принадлежит: HI LLC

A calibration arrangement of a magnetic field measurement device includes at least one attachment point nub configured for attachment to the magnetic field measurement device; mounting arms extending from the at least one attachment point nub; and reference coil loops distributed among the mounting arms. A magnetic field measurement system includes the calibration arrangement and a magnetic field measurement device including a sensor mounting body, magnetic field sensors disposed on or within the sensor mounting body, and at least one primary attachment point formed in or on the sensor mounting body configured to receive the at least one attachment point nub of the calibration arrangement.

Подробнее
Номер записи: 12
14-01-2021 дата публикации

Magnetic Field Sensor With Reduced Influence Of External Stray Magnetic Fields

Номер: US20210011096A1
Автор: Daga Jean-Michel, Lassalle-Balier Rémy, Rioult Maxime
Принадлежит: Allegro Microsystems, LLC

A magnetic field sensor responsive to a movement of a target object can include a plurality of magnetoresistance elements arranged in a line and having a span according to y(1−1/x), where y is equal a full spatial period of the target object and where x is equal to a total quantity of magnetoresistance elements in the plurality of magnetoresistance elements. The plurality of magnetic field sensing elements is operable to generate a signal that is substantially not responsive to the movement of the target object but is responsive to stray external magnetic fields. 1. A magnetic field sensor responsive to a target object having a plurality of target features arranged in a periodic pattern , the periodic pattern having a spatial period with a width y , the target object capable of moving such that the target features move along a movement direction relative to the magnetic field sensor , the magnetic field sensor comprising:a substrate having a surface; anda first plurality of magnetic field sensing elements disposed upon the substrate, the first plurality of magnetic field sensing elements comprising x magnetic field sensing elements, each having a respective maximum response axis parallel to a common axis and parallel to the surface of the substrate, the first plurality of magnetic field sensing elements arranged in a line parallel to the movement direction, wherein a distance between centers of outer ones of the first plurality of magnetic field sensing elements is y(1−1/x), wherein the first plurality of magnetic field sensing elements is electrically coupled in a single series arrangement resulting in a series string signal.2. The magnetic field sensor of claim 1 , wherein all adjacent pairs of the plurality of magnetic field sensing elements are equally spaced.3. The magnetic field sensor of claim 1 , wherein the series string signal does not substantially respond to the movement of the target object claim 1 , and wherein the series string signal is more ...

Подробнее
Номер записи: 13
09-01-2020 дата публикации

HALL SENSOR WITH INTERLEAVED AND/OR SLIDING AVERAGED/SUMMED SPINNING PHASES

Номер: US20200011940A1
Автор: Motz Mario
Принадлежит:

Various embodiments discussed herein can comprises systems or methods that can improve over existing spinning current Hall sensor systems via at least one of interleaving spinning phases or sliding averaging/summing. One example embodiment can comprise a sensor system comprising M (a positive integer) spinning current Hall sensors, each of which has N (an integer greater than one) distinct spinning phases during which it can acquire sensor data, and a multiplexer that can select sensor data of the sensors according to a M×N spinning phase sensor sequence. The M×N distinct spinning phases of the sensor sequence can be interleaved, wherein the average in the time domain of the N spinning phases for each sensor is the same. For each of the M sensors, a sum and/or an average can be determined for one or more most recent representations of sensor data from that sensor. 1. An apparatus , comprising: acquire, during each spinning phase of N spinning phases of that spinning current Hall sensor, associated sensor data for that spinning phase of that spinning current Hall sensor, wherein N is an even integer greater than one; and', 'generate, for each spinning phase of the N spinning phases of that spinning current Hall sensor, a representation of the associated sensor data at an associated time instance of that sensor sequence, wherein the associated time instance corresponds to an end of that spinning phase,', 'wherein that sensor sequence comprises M×N spinning phases, wherein the M×N spinning phases comprise the N spinning phases for each spinning current Hall sensor of the M spinning current Hall sensors; and, 'M spinning current Hall sensors, wherein M is an integer greater than one, wherein, in each sensor sequence of one or more sensor sequences, each spinning current Hall sensor of the M spinning current Hall sensors is configured toa multiplexer configured to receive signals from the M spinning current Hall sensors and to output, at each associated time instance of ...

Подробнее
Номер записи: 14
18-01-2018 дата публикации

Sensor Unit

Номер: US20180017634A1
Автор: HIRABAYASHI Hiraku, UEDA Kunihiro, UMEHARA Tsuyoshi, WADA Yoshimitsu, YAMAWAKI Kazuma
Принадлежит: TDK Corporation

This sensor unit includes a base having a substantially-rectangular planar shape including a first side and a second side that are substantially orthogonal to each other, and a plurality of first sensors provided on the base and arranged on a first axis. The first axis is substantially parallel to the first side and passes through a center position of the base. 1. A sensor unit comprising:a base having a substantially-rectangular planar shape including a first side and a second side that are substantially orthogonal to each other; anda plurality of first sensors provided on the base and arranged on a first axis, the first axis being substantially parallel to the first side and passing through a center position of the base.2. The sensor unit according to claim 1 , further comprising a plurality of leads each having one end provided on the base claim 1 , and arranged along the first side or the second side claim 1 , or arranged along both of the first side and the second side.3. The sensor unit according to claim 1 , whereinone of the first sensors is a center position sensor provided at the center position of the base, andthe same number of the remaining first sensors, excluding the center position sensor, of the first sensors are provided on either side of the center position sensor to interpose the center position sensor.4. The sensor unit according to claim 1 , whereinthe first sensors have respective planar shapes that are substantially equal to each other,sizes, along the first side, of the respective first sensors are substantially same as each other, andsizes, along the second side, of the respective first sensors are substantially same as each other.5. The sensor unit according to claim 2 , further comprising a plurality of second sensors provided on the base and arranged on a second axis claim 2 , the second axis being substantially parallel to the second side and passing through the center position of the base claim 2 ,wherein the leads are arranged along ...

Подробнее
Номер записи: 15
10-02-2022 дата публикации

DEVICES AND METHOD FOR ALPHANUMERIC LABELING OF PRINTED PRODUCTS, AND SECURITY PRINTING PRESS

Номер: US20220040968A1
Автор: Bless Stefan, Diederichs Carsten, Merminod Antoine
Принадлежит:

A device for the alphanumeric labeling of printed products comprises a shaft mounted in a frame, and around which shaft at least one wheel-shaped or ring-shaped labeling tool is rotatably mounted, which tool carries a number of alphanumeric characters, one behind the other, on its outer circumference. A drive motor, in the form of, for example, a stepper motor, is provided and by which the labeling tool can be rotated around the shaft. The drive motor is linked for signals transmission to one of a data processing and a data storage of a control device, in which an assignment specification between the working positions of the alphanumeric characters or the fields carrying the alphanumeric characters, and step numbers of the stepper motor, is provided. The drive motor is or can be controlled by the control device in terms of a number of steps to be traveled, using this provided assignment specification, to move an alphanumeric character to be printed or the relevant field into a working position. 136-. (canceled)3701. A device for the alphanumeric labeling () of printed products , comprising{'b': 11', '03', '02, 'img': {'@id': 'CUSTOM-CHARACTER-00025', '@he': '3.56mm', '@wi': '2.12mm', '@file': 'US20220040968A1-20220210-P00001.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, 'sub': 'Z', 'a shaft () mounted in a frame (), around which at least one wheel-shaped or ring-shaped labeling tool () which carries multiple, i.e. a number k (k∈, k>1) of alphanumeric characters (Z) arranged one behind the other on its outer circumference is rotatably mounted,'}{'b': 12', '12', '02', '11, 'drive means having a drive motor () in the form of a stepper motor (), by which the labeling tool () can be rotated around the shaft (),'}characterized in that{'b': 12', '22', '12, 'sub': Z', 'f', 'Z', 'm, 'the drive motor () is linked for signals transmission to data processing and/or data storage means of a control device (), in which an assignment ...

Подробнее
Номер записи: 16
28-01-2021 дата публикации

Magnetic flux concentrator for in-plane direction magnetic field concentration

Номер: US20210025948A1
Автор: Benjamin Stassen Cook, Dok Won Lee, Jo Bito, Keith Ryan Green, Ricky Alan JACKSON, William David French
Принадлежит: Texas Instruments Inc

A structure includes a substrate which includes a surface. The structure also includes a horizontal-type Hall sensor positioned within the substrate and below the surface of the substrate. The structure further includes a patterned magnetic concentrator positioned above the surface of the substrate, and a protective overcoat layer positioned above the magnetic concentrator.

Подробнее
Номер записи: 17
28-01-2021 дата публикации

Magnetic measurement system and method of calibrating magnetic sensor

Номер: US20210025959A1
Автор: Hitoshi AOYAMA, Michiharu YAMAMOTO, Tomohiko NAGAO
Принадлежит: Aichi Steel Corp

A marker detection device which detects a magnetic marker laid in a road by using a sensor unit in which a plurality of combinations of a magnetic sensor and a magnetic-field generation coil are arranged includes a storage part which stores characteristic information of each magnetic-field generation coil, an estimation part which estimates a magnetic differential value acting on the magnetic sensor due to a current differential value acting on the magnetic-field generation coil by referring to the characteristic information of each magnetic-field generation coil, and a calibration part which calibrates each magnetic sensor so as to enhance uniformity in sensitivity, which is a ratio between an output differential value of the magnetic sensor in accordance with a change of a current by the current differential value acting on the magnetic-field generation coil and the estimated magnetic differential value.

Подробнее
Номер записи: 18
02-02-2017 дата публикации

MAGNETIC SENSOR ARRAY AND SYSTEM

Номер: US20170030981A1
Автор: GOODSON DAVID B., LYNDE C. MACGILL, WIKLOF CHRISTOPHER A.
Принадлежит:

A magnetic sensor array includes non-packaged magnetic sensors disposed on a substrate. The non-packaged magnetic sensors can include bare dice, in one embodiment. In another embodiment, the magnetic sensors are formed directly on the substrate, such as by printing conductive traces on the substrate. In another embodiment, a magnetic sensor array includes a magnetic field converter configured to launch received magnetic fields along an axis corresponding to a magnetic sensor maximum sensitivity. 1. A magnetic sensor array , comprising:a substrate;a plurality of magnetic sensors disposed on the substrate;a sensor array interface disposed on the substrate; anda sensor interface circuit disposed on the substrate and configured to operatively couple the plurality of magnetic sensors to the sensor array interface.2. The magnetic sensor array of claim 1 , wherein a first portion of the plurality of magnetic sensors are arranged to detect local magnetic fields along an x-axis parallel to the substrate; andwherein a second portion of the plurality of magnetic sensors are arranged to detect local magnetic fields along a y-axis parallel to the substrate and perpendicular to the x-axis.3. The magnetic sensor array of claim 2 , wherein the first and second portions of the plurality of magnetic sensors are arranged in an alternating array on the substrate.47.-. (canceled)8. The magnetic sensor array of claim 1 , wherein the substrate includes two substrates;wherein the sensor interface circuit comprises two sensor interface circuits respectively disposed on each of the two substrates;each of the two sensor interface circuits further comprising:conductive traces disposed on each respective substrate; anda plurality of mounting pads disposed the respective substrate and operatively coupled to the conductive traces;wherein each sensor includes a bottom surface operatively coupled to a respective one of the plurality of mounting pads disposed on the first substrate; andwherein each ...

Подробнее
Номер записи: 19
04-02-2021 дата публикации

DETECTION OF REPLAY ATTACK

Номер: US20210034730A1
Автор: Lesso John Paul
Принадлежит: Cirrus Logic International Semiconductor Ltd.

In order to detect a replay attack in a speaker recognition system, at least one feature is identified in a detected magnetic field. It is then determined whether the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker. If so, it is determined that a replay attack may have taken place. 119.-. (canceled)20. A method of detecting a replay attack in a speaker recognition system , the method comprising:receiving an audio signal comprising speech;receiving a magnetometer signal;determining a syllabic rate or an articulation rate of the speech;detecting modulation of at least one feature of the magnetometer signal at the syllabic rate or the articulation rate;determining based on the detecting that the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker; anddetermining that a replay attack may have taken place.21. The method of claim 20 , wherein the syllabic rate or the articulation rate of the speech are determined for speech detected at the same time as the magnetometer signal.22. The method of claim 20 , wherein the determined syllabic rate or articulation rate is used to set a passband frequency range for detecting modulation of the at least one feature of the magnetometer signal.23. A method as claimed in claim 20 , wherein the audio signal is received at substantially the same time as the magnetic field is detected claim 20 , the method further comprising claim 20 , if it is determined that the at least one identified feature of the detected magnetic field is indicative of playback of speech through a loudspeaker claim 20 , determining that the audio signal may result from said replay attack.24. A method as claimed in claim 20 , wherein the magnetometer signal is received from a magnetometer claim 20 , the method further comprising:performing a Discrete Fourier Transform on the magnetometer signal.25. A method as claimed in claim ...

Подробнее
Номер записи: 20
09-02-2017 дата публикации

METHOD AND DEVICE FOR MEASURING A MAGNETIC FIELD DISTRIBUTION OF A MAGNET ALONG A MAIN SURFACE OF SAID MAGNET

Номер: US20170038441A1
Автор: KLICHÉ Stephan, VERVAEKE Koen
Принадлежит: MagCam NV

A method for determining a magnetic field of a magnet along a surface of the magnet, the method comprising: 1. A method for determining a magnetic field of a magnet along a surface of said magnet , the method comprising:performing a relative movement between said surface of said magnet and a magnetic camera device;measuring said magnetic field by means of said magnetic camera device, to thereby obtain magnetic field measurements for said surface;wherein said relative movement is a continuous movement which is a combination of a relative translational movement and a relative rotational movement.2. The method according to claim 1 , wherein said magnetic camera device comprises a one-dimensional array of at least two magnetic field sensors.3. The method according to claim 2 , wherein said one-dimensional array of at least two magnetic field sensors is arranged along a first direction.4. The method according to claim 3 , wherein said relative translational movement is a movement parallel to said first direction.5. The method according to claim 1 , wherein said relative rotational movement is a movement wherein said surface of said magnet rotates around an axis claim 1 , said axis defining a second direction.6. The method according to claim 4 , wherein said first direction and said second direction are parallel claim 4 , resulting in a helical relative movement.7. The method according to claims 4 , wherein said first direction and said second direction are perpendicular claims 4 , resulting in a spiraling relative movement.8. The method according to claim 6 , wherein said spiraling or helical relative movement results in a full scan of the magnetic field along said surface.9. The method according to claim 8 , wherein said full scan comprises scanning a portion of said surface more than once claim 8 , at subsequent rotation cycles of said relative rotational movement.10. The method according to claim 1 , wherein measuring said magnetic field by means of said magnetic ...

Подробнее
Номер записи: 21
08-02-2018 дата публикации

SCALABLE AND HIGH THROUGHPUT BIOSENSING PLATFORM

Номер: US20180038843A1
Автор: Kuan Germano José António Henriques, Piedade Moisés Simões
Принадлежит:

A multi-channel high performance embedded system is provided, which is capable of high throughput biological analysis. A configurable acquisition and processing architecture combines dedicated co-processors to perform signal filtering and other computational demanding tasks, with a central processor controlling the whole system. The mapping of the architecture into an architecture, such as the Zynq SoC, demonstrates the ability of the biosensing platform to support a significant number of sensors, while ensuring a high sampling frequency. Furthermore, the Zynq reconfiguration abilities provide a mechanism to adapt the processing and maximize the biological sensitivity. 1. A biological detection system comprising:an integrated biochip having at least two blocks of sensors, each block of sensors having a signal acquisition channel that is independently accessible such that each block of sensors can be read in parallel; and drive circuitry to drive each block of sensors of the biochip;', 'a set of acquisition interfaces arranged such that a select one acquisition interface is coupled to a corresponding one signal acquisition channel;', 'a set of co-processors such that a select co-processor is uniquely associated with a corresponding one of the acquisition interfaces; and', 'a central processor that controls the drive circuitry, interfaces with the set of acquisition interfaces and interfaces with the set of co-processors, to read data from the biochip., 'a biosensing platform having216. The biological detection system of claim 1 , wherein said each block of sensors having an array of at least sensors and a corresponding time division multiplexer to read out individual sensors from a corresponding block.3. The biological detection system of claim 1 , wherein the set of acquisition interfaces further comprises an analog to digital converter and a controller claim 1 , where the controller conveys information from the analog to digital converter to its corresponding co- ...

Подробнее
Номер записи: 22
24-02-2022 дата публикации

Integrated circuit and sensor system

Номер: US20220057338A1
Автор: Mutsuko Hatano, Nobuhiko Nishiyama, Takayuki Iwasaki, Takuya MUROOKA, Yuta MASUYAMA
Принадлежит: Tokyo Institute of Technology NUC

A thin film has a band gap of 2.2 eV or more and in which a crystal includes an atomic vacancy and an electron, a microwave irradiation system configured to irradiate the thin film with a microwave in response to driving from outside, an excitation unit configured to excite the electron included in the thin film in response to driving from outside, and a detector configured to detect, as an electric signal, at least either one of an intensity of light outputted from the thin film when the electron transitions from an excited state to a ground state and a change in conductivity of the thin film based on excitation.

Подробнее
Номер записи: 23
16-02-2017 дата публикации

Tiered Superconducting Quantum Interference Device (SQUID) Array

Номер: US20170045592A1
Автор: Berggren Susan Anne Elizabeth, Fagaly Robert Lewis
Принадлежит: United States of America, as Represented by the Secretary of the Navy

A device in accordance with several embodiments can include a plurality of N Superconducting Quantum Interference Devices (SQUIDs), which can be divided into a plurality of sub-blocks of SQUIDs. The SQUIDs in the sub-blocks can be RF SQUIDs, DC SQUIDs or bi-SQUIDs. The sub-blocks can be arranged in a plurality of X tiers, with each Ttier having a different number of sub-blocks of SQUIDs than an immediately adjacent Ttier. Each Ttier can have the same total bias current; and can have SQUIDs with different critical currents and loop sizes, with the different loop sizes on each tier having a Gaussian distribution of between 0.5 and 1.5 (or a random distribution). Additionally, the Arrays can be configured as three independent planar arrays of SQUIDs. The three planar arrays can be triangular when viewed in top plan, and can be arranged so that they are orthogonal to each other. 1. An antenna , comprising:a plurality of N Superconducting Quantum Interference Devices (SQUIDs);said plurality of N SQUIDs divided into three planar arrays of said SQUIDs;{'sub': 1', '2', '3', 'x', '2', 'x', 'x', 'x-1', 'x, 'each of said planar arrays being further divided into a plurality of sub-blocks of said SQUIDs, said sub-blocks being arranged in a plurality of X T, T, T, . . . Ttiers, each said Tthrough Ttier having a different number of said sub-blocks of said SQUIDs than said Ttier than said Ttier immediately above said Ttier;'}{'sub': 'x', 'each said Ttier having the same total bias current; and,'}said planar configurations being arranged so that each said planar configuration is orthogonal to each other said planar configuration.2. The device of claim 1 , wherein each of said sub-blocks comprises an RF SQUID.3. The device of claim 1 , wherein each of said sub-blocks comprises a bi-SQUID.4. The device of claim 1 , wherein each of said sub-blocks comprises a DC-SQUID.5. The device of claim 1 , wherein each of said sub-blocks comprises an N×M array of bi-SQUIDs.6. The device of claim 1 ...

Подробнее
Номер записи: 24
03-03-2022 дата публикации

MEASURING APPARATUS, MEASURING METHOD AND RECORDING MEDIUM

Номер: US20220065953A1
Автор: OKATAKE Shigeki, Tsuji Hideyuki, Yamada Masashi
Принадлежит:

A measurement in a high accuracy is performed when acquiring a tomographic image or the like. Provided is a measuring apparatus, including an electrode unit including a plurality of electrodes in contact with a living body; a magnetic sensor array, including a plurality of magnetic sensor cells, capable of detecting input magnetic fields in three axial directions in a plurality of positions in a three-dimensional space; a current applying section configured to apply a current flowing in the living body by at least one electrode pair of the plurality of electrodes; a measurement data acquiring section configured to acquire measurement data based on the input magnetic field. Which is detected from the living body by the magnetic sensor array during a current flows in the living body; and an estimation section configured to estimate a current flowing in the living body based on the measurement data. 1. A measuring apparatus , comprising:an electrode unit including a plurality of electrodes in contact with a living body;a magnetic sensor array, including a plurality of magnetic sensor cells, capable of detecting input magnetic fields in three axial directions in a plurality of positions in a three-dimensional space;a current applying section configured to apply a current flowing in the living body by at least one electrode pair of the plurality of electrodes;a measurement data acquiring section configured to acquire measurement data based on the input magnetic field, which is detected from the living body by the magnetic sensor array during a current flows in the living body; andan estimation section configured to estimate a current flowing in the living body based on the measurement data.2. The measuring apparatus according to claim 1 , wherein the current applying section is configured to apply an alternating current to flow in the living body by the at least one electrode pair.3. The measuring apparatus according to claim 1 , comprising a control section configured ...

Подробнее
Номер записи: 25
25-02-2021 дата публикации

A DRUG DELIVERY SYSTEM

Номер: US20210052813A1
Автор: Chang Soon Yee, Kruse Claudia, Mahlich Matthias, Palale Suresh, Troebner Philipp, Vemulamada Pardhasaradhi
Принадлежит:

A drug delivery system including: an oblong housing including a setting structure to set a dose of a drug via an angular position; and a sensor structure to determine the dose, including a magnet and a magnetic sensor, arranged so that at least one of an angular position and a displacement of the magnetic sensor relative to the magnet may be determined as a function of the electrical resistance of the magnetic sensor. The sensor structure is arranged in relation to the setting structure so that the angular position of the setting structure is determined as a function of the angular position and/or the displacement of the magnetic sensor. A sensor structure is also described including: a flexible foil, including a magnetic sensor, in a cylindrical shape configuration comprising an axis; and a magnet arranged at a line parallel to or collinear with the axis. 112-. (canceled)13. A drug delivery system , comprising:an oblong housing including a setting structure configured to set a dose of a drug via an angular position; anda sensor structure configured to determine the dose, the sensor structure including a magnet and a magnetic sensor, arranged so that at least one of an angular position and a displacement of the magnetic sensor, relative to the magnet, is determined as a function of an electrical resistance of the magnetic sensor, and wherein the sensor structure is arranged in relation to the setting structure so that the angular or axial position of the setting structure is determined as a function of the angular position and/or the displacement of the magnetic sensor14. The drug delivery system according to claim 13 , wherein the oblong housing includes an actuator configured to drive an expelling mechanism claim 13 , to release the dose of drug claim 13 , wherein at least part of a actuator displacement of the actuator is axial.15. The drug delivery system according to claim 14 , wherein the sensor structure is configured to determine an actuation of the actuator ...

Подробнее
Номер записи: 26
25-02-2021 дата публикации

Measurement of positions, mechanical displacements and rotations and stresses of bodies

Номер: US20210055359A1
Автор: Windl Roman
Принадлежит:

The invention concerns a device and a method for measuring the relative position and angles between two bodies to be measured (). The invention is characterized in that it comprises one or more permanent magnets () and in that the position to be measured is determined indirectly via a magnetic field. The magnetic field is detected by one or more magnetic field sensors () read by a microchip. A mathematical minimization method is used to calculate back to the position and angles of the permanent magnet system () in relation to the magnetic field sensors (). The energy required to read out the sensors can be obtained from the excitation field of a readout device. The sensor can perform without energy supply and can be read out by means of standard readout devices, such as an NFC-capable mobile telephone. 17773776736663. Method for measuring the distance between two bodies ( , ) , characterized in that at least two magnetic field sensor () are mounted on one body () and at least one permanent magnet () is mounted on another body () , and at least one component of the magnetic field of at least two sensors () are measured (H) and a magnetic field His calculated , which is generated by the permanent magnet system () for a given alignment ythat is comprised that the difference d between the theoretical field Hand the measured field His determined d(y)=H(y)−Hand the alignment yof the permanent magnet system () is determined in such a way that the mathematical norm of the vector d is minimized and thus the alignment yof the magnetic system () relative to the field sensors () is determined.27773776736. Method for measuring the alignment ybetween two bodies ( , ) , characterized in that at least two magnetic field sensors () are mounted on one body () and a magnet system consisting of at least one permanent magnet () is mounted on another body () and the permanent magnets at the positions of the sensors generating a magnetic field Hand at least one component of the magnetic ...

Подробнее
Номер записи: 27
25-02-2021 дата публикации

TMR Sensor with Magnetic Tunnel Junctions with Shape Anisotropy

Номер: US20210055360A1
Автор: HU Chih-Ching, Jiang Ming, KAISER Christian, MAO Ming, MAURI Daniele, Van Der Heijden Petrus Antonius, Wang Lei, Zheng Yuankai
Принадлежит:

Embodiments of the present disclosure generally relate to a sensor of magnetic tunnel junctions (MTJs) with shape anisotropy. In one embodiment, a tunnel magnetoresistive (TMR) based magnetic sensor in a Wheatstone configuration includes at least one magnetic tunnel junctions (MTJ). The MTJ includes a free layer having a first edge and a second edge. The free layer has a thickness of about 100 Å or more. The free layer has a width and a height with a width-to-height aspect ratio of about 4:1 or more. The MTJ has a first hard bias element positioned proximate the first edge of the free layer and a second hard bias element positioned proximate the second edge of the free layer. 1. A tunnel magnetoresistive (TMR) based magnetic sensor in a Wheatstone configuration , comprising: a free layer having a first edge and a second edge, the free layer having a thickness of about 100 Å or more and having a width and a height with a width-to-height aspect ratio of about 4:1 or more,', 'a first hard bias element positioned proximate the first edge of the free layer; and', 'a second hard bias element positioned proximate the second edge of the free layer., 'at least one magnetic tunnel junctions (MTJ), the at least one MTJ comprising2. The TMR based magnetic sensor of claim 1 , wherein the width of the free layer is from about 1 μm to about 10 μm and wherein the height of the free layer is about 0.2 μm to about 2 μm.3. The TMR based magnetic sensor of claim 1 , wherein the free layer is shaped as a strip.4. The TMR based magnetic sensor of claim 1 , wherein a resistance area product of the at least one MTJ is from about 100 Ohm/μmto about 10 claim 1 ,000 Ohm/μm.5. The TMR based magnetic sensor of claim 1 , wherein the at least one MTJ further comprises:a barrier layer over the free layer;a reference layer over the barrier layer;an anti-parallel coupled layer over the reference layer;a pinned layer over the anti-parallel coupled layer; andan antiferromagnetic pinning layer over the ...

Подробнее
Номер записи: 28
20-02-2020 дата публикации

Magnetic field sensing device

Номер: US20200057121A1
Автор: Fu-Te Yuan
Принадлежит: Isentek Inc

A magnetic field sensing device includes at least one vortex magnetoresistor and at least one magnetization setting element. The vortex magnetoresistor includes a pinning layer, a pinned layer, a spacer layer, and a round free layer. The pinned layer is disposed on the pinning layer, and the spacer layer is disposed on the pinned layer. The round free layer is disposed on the spacer layer, and has a magnetization direction distribution with a vortex shape. The magnetization setting element is alternately applied and not applied an electric current to. When the magnetization setting element is not applied the electric current to, the magnetization direction distribution with the vortex shape of the round free layer is varied with an external magnetic field. When the magnetization setting element is applied the electric current to, a magnetic field generated by the magnetization setting element makes the round free layer achieve magnetic saturation.

Подробнее
Номер записи: 29
03-03-2016 дата публикации

METHOD FOR CONTROLLING A GRAPHICAL INTERFACE FOR DISPLAYING IMAGES OF A THREE-DIMENSIONAL OBJECT

Номер: US20160065855A1
Автор: HAUTSON Tristan, Jobert Timothee
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

A method for controlling a graphical interface includes: calculating coordinates of a permanent magnet and direction of magnetic moment of the permanent magnet from magnetometer measurements; matching dimensions of a three-dimensional object with the calculated coordinates by multiplying each dimension of the three-dimensional object by a coefficient to obtain a three-dimensional object brought to scale and by multiplying the calculated coordinates by inverse of a coefficient to obtain scaled coordinates; constructing a two-dimensional image corresponding to the image of the object brought to scale observed from a viewpoint and along an optical axis deduced from the scaled coordinates and from the direction of the magnetic moment of the permanent magnet; and controlling the graphical interface to display the constructed image on this graphical interface. 19-. (canceled)10. A method for controlling a graphical interface for displaying images of a three-dimensional object , comprising: with a working three-dimensional reference frame whose position is known with respect to the array of magnetometers, and', 'with a predetermined three-dimensional measurement area, 'providing an array of magnetometers comprising N three-axis magnetometers mechanically connected to one another with no degree of freedom to conserve a known distance between each of the magnetometers, wherein N is an integer number greater than or equal to five, the array of magnetometers being associatedrecording a digital file coding dimensions of the three-dimensional object in a three-dimensional reference frame as a virtual reference frame, a position of the virtual reference frame with respect to the working reference frame being known such that coordinates of each point of the virtual reference frame may be expressed in the working reference frame by a change of reference frame;providing a pointer comprising a permanent magnet manually moveable by a user inside of the measurement area;measuring, when ...

Подробнее
Номер записи: 30
24-03-2022 дата публикации

VECTOR LENGTH VARIANCE CHECK FOR FUNCTIONAL SAFETY OF ANGLE SENSORS

Номер: US20220090906A1
Автор: HAMMERSCHMIDT Dirk
Принадлежит: INFINEON TECHNOLOGIES AG

A magnetic angle sensor system includes a first magnetic sensor configured to generate a first sensor signal, a second magnetic sensor configured to generate a second sensor signal, and at least one signal processor configured to: generate an angle signal including an angular value corresponding to an orientation of a magnetic field based on the first sensor signal and the second sensor signal; generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal; and extract at least one spectral component of the vector length signal, the at least one spectral component being indicative of a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths. 1. A magnetic angle sensor system , comprising:a first magnetic sensor configured to generate a first sensor signal in response to a first component of a magnetic field;a second magnetic sensor configured to generate a second sensor signal in response to a second component of the magnetic field; and{'claim-text': ['generate an angle signal including an angular value corresponding to an orientation of the magnetic field based on the first sensor signal and the second sensor signal,', 'generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal based on the first sensor signal and the second sensor signal, wherein each of the plurality of vector lengths is sampled at a different sample time of a plurality of consecutive sample times, and', 'extract at least one spectral component of the vector length signal, the at least one spectral component being indicative of a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths.'], '#text': 'at least one signal processor configured to:'}2. The magnetic angle sensor system of claim 1 , wherein:the at least one ...

Подробнее
Номер записи: 31
24-03-2022 дата публикации

MAGNETIC FIELD SENSOR ON INTEGRATED CIRCUIT

Номер: US20220091195A1
Автор: Lanson Jean-François, SCHLÄFLI Dominik
Принадлежит: LEM INTERNATIONAL SA

A magnetic field sensor comprises a signal conditioning IC and a magnetic field sensor IC, the magnetic field sensor IC being mounted on and connected to the signal conditioning IC. The magnetic field sensor IC comprises a semi-conductor substrate with a sensor active layer disposed an outer facing side of the magnetic field sensor opposite the signal conditioning IC. The sensor active layer is connected to conductive vias that extend through the semi-conductor substrate from said outer facing side to an underside facing the signal conditioning IC, an underside of the conductive via being electrically interconnected to a connection pad on the signal conditioning IC via a chip-on-chip interconnection comprising a conductive bead connection and a solder connection. 113.-. (canceled)14. A magnetic field sensor comprising a signal conditioning IC and a magnetic field sensor IC , the magnetic field sensor IC mounted on and connected to the signal conditioning IC , the magnetic field sensor IC comprising a semi-conductor substrate with a sensor active layer disposed an outer facing side of the magnetic field sensor opposite the signal conditioning IC , the sensor active layer connected to conductive vias that extend through the semi-conductor substrate from said outer facing side to an underside facing the signal conditioning IC , an underside of the conductive via being electrically interconnected to a connection pad on the signal conditioning IC via a chip-on-chip interconnection.15. Magnetic field sensor according to claim 14 , wherein the chip-on-chip interconnection comprises a bead connection.16. Magnetic field sensor according to claim 14 , wherein the chip-on-chip interconnection comprises a solder connection.17. Magnetic field sensor according to claim 14 , wherein the sensor active layer comprises a Hall effect sensor element or other form of magneto-resistive sensor element sensitive to a magnetic field.18. Magnetic field sensor according to claim 14 , wherein ...

Подробнее
Номер записи: 32
18-03-2021 дата публикации

MAGNETIC SENSOR AND DIAGNOSTIC DEVICE

Номер: US20210080519A1
Автор: Higashi Yoshihiro, IWASAKI Hitoshi, KIKITSU Akira, SHIROTORI Satoshi
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a magnetic sensor includes a first element. The first element includes a first magnetic part, a first magnetic layer, a first nonmagnetic portion, and a first intermediate magnetic layer. The first magnetic part includes first to third portions. The first portion is between the second and third portions. The first portion has a first length and a second length. The second portion has at least one of a third length longer than the first length or a fourth length longer than the second length. The third portion has at least one of a fifth length longer than the first length or a sixth length longer than the second length. The first nonmagnetic portion is provided between the first portion and the first magnetic layer. The first intermediate magnetic layer is provided between the first portion and the first nonmagnetic portion. 1. A magnetic sensor , comprising a first element , a first magnetic part including a first portion, a second portion, and a third portion, a direction from the second portion toward the third portion being aligned with a first direction, the first portion being between the second portion and the third portion in the first direction, the first portion having a first length and a second length, the first length being along a second direction crossing the first direction, the second length being along a third direction crossing a plane including the first direction and the second direction, the second portion having at least one of a third length along the second direction or a fourth length along the third direction, the third length being longer than the first length, the fourth length being longer than the second length, the third portion having at least one of a fifth length along the second direction or a sixth length along the third direction, the fifth length being longer than the first length, the sixth length being longer than the second length;', 'a first magnetic layer, a direction from the first portion ...

Подробнее
Номер записи: 33
05-03-2020 дата публикации

METHOD FOR CONTACTLESSLY DETERMINING THE POSITION OF A DRIVEN ROTOR OF AN ELECTRIC MOTOR, ELECTRIC MOTOR, AND PIPETTING SYSTEM FOR ASPIRATING AND DISPENSING PIPETTING LIQUID HAVING SUCH AN ELECTRIC MOTOR

Номер: US20200076275A1
Автор: Ettinger Reto, Gysel Fridolin, Rast Jürg
Принадлежит:

There is provided a method for contactless determination of the position of a driven moving portion () of an electric motor () by means of a plurality of magnetic field sensors (), wherein the moving portion is movably arranged with respect to a stator () and has a plurality of permanent magnets () which generate a moving-portion magnetic field having a plurality of periodically spaced apart maxima, and wherein the plurality of magnetic field sensors are arranged along a movement path () of the moving portion. The method comprises the following steps: by means of the plurality of magnetic field sensors, determining a plurality of measured values () for a momentary magnetic field that is generated by the plurality of permanent magnets and dependent on the position of the moving portion, determining a specific spectral signal component () from the plurality of measured values (), the specific spectral signal component having the spatial frequency corresponding to the distance between adjacent like maxima of the moving-portion magnetic field, and determining the position of the driven moving portion by means of the specific spectral signal component. 142864043. A method for contactless determination of the position of a driven moving portion () of an electric motor () by means of a plurality of magnetic field sensors () , wherein the moving portion is movably arranged with respect to a stator () and has a plurality of permanent magnets () which generate a moving-portion magnetic field having a plurality of periodically spaced apart maxima , and wherein the plurality of magnetic field sensors are arranged along a movement path () of the moving portion ,the method comprising the following steps:{'b': '70', 'by means of the plurality of magnetic field sensors, determining a plurality of measured values () for a momentary magnetic field that is generated by the plurality of permanent magnets and dependent on the position of the moving portion,'}{'b': 74', '70, 'determining ...

Подробнее
Номер записи: 34
14-03-2019 дата публикации

Methods, Devices, and Integrated Circuits for Automatically Adjusting a Transfer Function of a Sensing Device based on a Power Level of an Incident Electromagnetic Signal

Номер: US20190079145A1
Автор: Berggren Susan Anne Elizabeth, Fagaly Robert L., Leese de Escobar Anna M.
Принадлежит: United States of America as represented by Secretary of the Navy

The transfer function of a sensing device including a plurality of sensors is automatically adjusted based on a power level of an incident electromagnetic signal detected by the plurality of sensors. Each of the plurality of sensors is associated with a unique transfer function. An output from one of the plurality of sensors associated with a particular transfer function is automatically selected based on a power level of the detected incident electromagnetic signal. Responsive to a change in the power level of the detected electromagnetic signal, another output from a different one of the plurality of sensors associated with a different transfer function is selected. The transfer function is adjusted over time by automatically selecting outputs from different ones of the plurality of sensors based on changes in the power level of the detected incident electromagnetic signal. 1. A method for adjusting a transfer function of a sensing device including a plurality of sensors , the method comprising:detecting, by the plurality of sensors, an incident electromagnetic signal, wherein each of the plurality of sensors is associated with a unique transfer function;automatically selecting an output from one of the plurality of sensors associated with a particular transfer function based on a power level of the detected incident electromagnetic signal; andautomatically selecting another output from a different one of the plurality of sensors associated with a different transfer function responsive to a change in the power level of the detected electromagnetic signal, wherein the transfer function of the sensing device is adjusted over time by automatically selecting outputs from different ones of the plurality of sensors based on changes in the power level of the detected incident electromagnetic signal.2. The method of claim 1 , wherein each of the plurality of sensors is associated with a respective different power range.3. The method of claim 1 , wherein a selected output ...

Подробнее
Номер записи: 35
18-03-2021 дата публикации

Wireless Power Transfer Object Detection Circuit and Method

Номер: US20210083525A1
Автор: Dassanayake Ruwanga, Hou Yulong, Moore Kenneth, Stingu Petru Emanuel
Принадлежит:

In an embodiment, a method includes: wirelessly transmitting power using a transmitter LC tank; wirelessly receiving power from the transmitter LC tank using a receiver LC tank; interrupting wirelessly transmitting power for a slot period; during the slot period, shorting the receiver LC tank; during the slot period and after shorting the receiver LC tank, measuring a transmitter signal associated with the transmitter LC tank; determining a power loss associated with the wirelessly transmitting power based on the measured transmitter signal; and detecting a metallic object based on the determined power loss. 1. A method comprising:wirelessly transmitting power using a transmitter LC tank;wirelessly receiving power from the transmitter LC tank using a receiver LC tank;interrupting wirelessly transmitting power for a slot period;during the slot period, shorting the receiver LC tank;during the slot period and after shorting the receiver LC tank, measuring a transmitter signal associated with the transmitter LC tank;determining a power loss associated with the wirelessly transmitting power based on the measured transmitter signal; anddetecting a metallic object based on the determined power loss.2. The method of claim 1 , further comprising claim 1 , during the slot period claim 1 , shorting the transmitter LC tank at the same time as shorting the receiver LC tank.3. The method of claim 1 , wherein wirelessly transmitting power using the transmitter LC tank comprises driving the transmitter LC tank with first and second half-bridges respectively coupled to first and second terminals of the transmitter LC tank claim 1 , the method further comprising claim 1 , during the slot period claim 1 , shorting the transmitter LC tank by turning on a first transistor of the first half-bridge and a second transistor of the second half-bridge.4. The method of claim 1 , wherein measuring the transmitter signal comprises measuring a first current flowing through the transmitter LC tank ...

Подробнее
Номер записи: 36
12-03-2020 дата публикации

APPARATUSES AND METHODS FOR SENDING AND RECEIVING ROTATION SPEED INFORMATION

Номер: US20200081074A1
Автор: FONTANESI Simone, Lorber Patricia, WERTH Tobias
Принадлежит:

Apparatuses and methods for sending and receiving rotation speed information and corresponding computer programs and electronically readable data carriers are provided. A current interface is configured to transmit pulse sequences coding a number of bits. In a first bit group of the number of bits, it is flagged whether the pulse sequence has been sent for a zero crossing in a magnetic field. Information modulated onto a second bit group of the number of bits is selected on the basis of the first bit group. 1. An apparatus for sending rotation speed information , comprising:a signal processor configured to receive a magnetic field sensor signal; anda current interface configured to send pulse sequences of a current signal, wherein each pulse sequence comprises a first pulse having a first current level, followed by a number of bit pulses coding a number of bits having a second and a third current level,wherein the signal processor is configured to detect zero crossings in a characteristic of a magnetic field and further points in the characteristic of the magnetic field on the basis of the magnetic field sensor signal, and to actuate the current interface to send a pulse sequence when a zero crossing or a further point in the magnetic field is detected, andwherein, in a first bit group of the number of bits of a respective pulse sequence, it is flagged whether the pulse sequence is a pulse sequence sent for a detected zero crossing or a pulse sequence sent for a detected further point, and, depending on whether it is a pulse sequence sent for a detected zero crossing or a pulse sequence sent for a detected further point, information modulated onto a second bit group of the number of bits of the respective pulse sequence is selected.2. The apparatus as claimed in claim 1 , wherein the number of bits of each pulse sequence is nine claim 1 , and the second bit of the number of bits indicates whether the pulse sequence is a pulse sequence sent for a detected zero ...

Подробнее
Номер записи: 37
05-05-2022 дата публикации

Systems and methods for magnetic field localization of charged particle beam end point

Номер: US20220134132A1
Автор: Stuart Julian Swerdloff
Принадлежит: Elekta Pty Ltd

Embodiments of the present disclosure are directed to radiotherapy systems. An exemplary radiotherapy system may comprise a radiotherapy output configured to deliver a charged particle beam to a patient. The system may also comprise a detector array. The detector array may have an axis that extends parallel to an axis along which the charged particle beam is delivered by the radiotherapy output. The detector array may comprise a plurality of detectors configured to detect a magnetic field generated by the charged particle beam during delivery of the charged particle beam from the radiotherapy output.

Подробнее
Номер записи: 38
01-04-2021 дата публикации

Orthogonal SQUID Arrays on a Baseline with Rotation

Номер: US20210096193A1
Автор: Berggren Susan Anne Elizabeth, Hallman Daniel, Leese de Escobar Anna, Sheffield Thomas, Taylor Benjamin
Принадлежит:

A system is provided for detecting a radio frequency signal. The system includes a dielectric platform, a first SQUID array, a second array of SQUIDs and a processing component. The dielectric platform has a first planar surface and a second planar surface that is disposed at an angle relative to the first planar surface. The first array of SQUIDs is disposed on the first planar surface and can output a first detection signal based on the radio frequency signal. The second array of SQUIDs is disposed on the second planar surface and can output a second detection signal based on the radio frequency signal. The processing component can determine a first plane from which the radio frequency signal is transmitting based on the first detection signal and the second detection signal. 1. A system for detecting a radio frequency signal , said system comprising:a dielectric platform having a first planar surface and a second planar surface that is disposed at an angle relative to said first planar surface;a first array of superconducting quantum interference devices disposed on said first planar surface, said first array being operable to output a first detection signal based on the radio frequency signal;a second array of superconducting quantum interference devices disposed on said second planar surface, said second array being operable to output a second detection signal based on the radio frequency signal; anda processing component operable to determine a first plane from which the radio frequency signal is transmitting based on the first detection signal and the second detection signal.2. The system of claim 1 , further comprising:a rotation component operable to rotate said dielectric platform from a first position to a second position,wherein when said dielectric platform is in the first position, said first array is operable to output the first detection signal, said second array is operable to output the second detection signal and processing component is operable ...

Подробнее
Номер записи: 39
05-04-2018 дата публикации

MAGNETIC FIELD SENSOR CIRCUIT IN PACKAGE WITH MEANS TO ADD A SIGNAL FROM A COIL

Номер: US20180095145A1
Автор: Ausserlechner Udo
Принадлежит: INFINEON TECHNOLOGIES AG

Sensor devices, systems and methods are provided, including a first magnetic sensor configured to measure a first magnetic field in a first frequency range and output a first sensor signal based on the measured first magnetic field, a second magnetic sensor configured to measure a second magnetic field in a second frequency range and output a second sensor signal based on the measured second magnetic field, and a sensor circuit configured to receive the first and the second sensor signals, combine the first and the second sensor signals, and output a combined sensor signal. The first magnetic sensor and the second magnetic sensor are configured to share a cross-over frequency. 1. A magnetic field sensor system comprising:a first magnetic sensor configured to measure a first magnetic field in a first frequency range and output a first sensor signal based on the measured first magnetic field;a second magnetic sensor configured to measure a second magnetic field in a second frequency range and output a second sensor signal based on the measured second magnetic field, wherein the first magnetic sensor and the second magnetic sensor share a cross-over frequency; anda sensor circuit electrically coupled to the first magnetic sensor and to the second magnetic sensor, the sensor circuit configured to receive the first sensor signal and the second sensor signal, and output a combined sensor signal derived from the first sensor signal and the second sensor signal.2. The magnetic field sensor system of claim 1 , wherein the first magnetic field and the second magnetic field are generated by a same magnetic field source.3. The magnetic field sensor system of claim 2 , wherein the magnetic field source is a conductor claim 2 , and the first magnetic field and the second magnetic field are generated by a current passing through the conductor.4. The magnetic field sensor system of claim 1 , wherein the first magnetic sensor and the sensor circuit are integrated on a semiconductor ...

Подробнее
Номер записи: 40
12-04-2018 дата публикации

MAGNETIC FIELD SENSOR AND METHOD FOR MAKING SAME

Номер: US20180100902A1
Автор: Bower Christopher, MEITL Matthew, SCHOTT Christian
Принадлежит:

A multi-element sensor for measuring a magnetic field. The multi-element sensor comprises a magnetic sensing element, and an electronic circuit. The magnetic sensing element is mounted on the electronic circuit and comprises a fractured tether. The magnetic sensing element is electrically connected with the electronic circuit. The electronic circuit is produced in a first technology and/or first material and the magnetic sensing element is produced in a second technology and/or second material different from the first technology/material. 1. A multi-element sensor for measuring a magnetic field , comprising:an integrated circuit element comprising an electronic circuit formed in a semiconductor circuit substrate;a cured adhesive layer disposed over the circuit substrate;a magnetic sensing element comprising a sensor substrate having at least one fractured tether, a top side, and a bottom side opposite the top side, and a magnetic sensor formed on, in, or over the top side of the sensor substrate, wherein the bottom side of the sensor substrate is adhered to the adhesive layer;one or more electrical connections formed at least partly in a conductive distribution layer on the circuit substrate over the electronic circuit, the electrical connections electrically connecting the magnetic sensor to the electronic circuit; andwherein the circuit substrate is a separate substrate from the sensor substrate and the material of the circuit substrate comprises a different material than the material of the sensor substrate.2. The multi-element sensor according to claim 1 , wherein the magnetic sensing element has a thickness between less than 5 μm or between 2 μm and 5 μm.3. The multi-element sensor according to claim 1 , wherein the electrical connections have a thickness between 1.0 μm and 2.0 μm and a width between 1 μm and 10 μm.4. The multi-element sensor according to claim 1 , wherein the material of the sensor substrate has a mobility that is higher than the mobility of ...

Подробнее
Номер записи: 41
26-03-2020 дата публикации

Inertial and RF Sensor Fusion

Номер: US20200096342A1
Автор: Abiri Behrooz, Bohn Florian, Carino Marc-Angelo, Hajimiri Seyed Ali
Принадлежит:

A method of determining the orientation of a device having disposed therein, in part, an inertia measurement unit, a phased array receiver, and a controller, includes, in part, detecting the difference between phases of an RF signal received by at least a pair of receive elements of the phased array receiver, determining the angle of incidence of the RF signal from the phase difference, using the angle of incidence to determine the projection of a vector on a plane of an array of transmitters transmitting the RF signal, and determining the yaw of the device from the projection of the vector. The vector is a three-dimensional vector representative of the orientation of the plane of the phased array receivers relative to the plane of the array of transmitters transmitting the RF signal. 1. A method of determining an orientation of a device comprising an inertia measurement unit , a phased array receiver , and a controller , the method comprising:detecting a difference between phases of an RF signal received by at least a pair of receive elements of the phased array receiver;determining an angle of incidence of the RF signal in accordance with the phase difference;using the angle of incidence to determine a projection of a vector on a plane of an array of transmitters transmitting the RF signal, said vector being a three-dimensional vector representative of an orientation of a plane of the phased array receivers relative to a plane of the array of transmitters transmitting the RF signal; and{'sub': 'yaw', 'determining a yaw (φ) of the device from the projection of the vector.'}2. The method of wherein said vector comprises component values defined by the inertia measurement unit.3. The method of wherein said RF signal charges the device.6. The method of wherein said array of transmitters is a phased array transmitter.7. The method of wherein said vector comprises component values defined by a magnetic sensor. The present application claims benefit under 35 USC 119(e) ...

Подробнее
Номер записи: 42
08-04-2021 дата публикации

THREE-AXIS UPSTREAM-MODULATED LOW-NOISE MAGNETORESISTIVE SENSOR

Номер: US20210103009A1
Автор: Deak James Geza, Zhou Zhimin
Принадлежит:

A three-axis upstream-modulated low-noise magnetoresistive sensor, comprising an X-axis magnetoresistive sensor (), a Y-axis magnetoresistive sensor (), and a Z-axis magnetoresistive sensor (), wherein the X, Y, and Z-axis magnetoresistive sensors respectively comprise X, Y, and Z-axis magnetoresistive sensing unit arrays, X, Y, and Z-axis soft ferromagnetic flux concentrator arrays, and X, Y, and Z-axis modulator wire arrays. The X, Y, and Z-axis magnetoresistive sensing unit arrays are electrically interconnected into X, Y, and Z-axis magnetoresistive sensing bridges respectively. The X, Y, and Z-axis modulator wire arrays are electrically interconnected into individual two-port X, Y, and Z-axis excitation coils. In order to measure external magnetic fields, the two-port X, Y, and Z-axis excitation coils separately supplied with high-frequency alternating current at a frequency f, from a current supply. The X-axis magnetoresistive sensor (), Y-axis magnetoresistive sensor (), and Z-axis magnetoresistive sensor () each output harmonic signal components having a frequency of 2f, which are then demodulated to obtain the X, Y, and Z-axis low-noise signals. This device is small in size, has low noise, and a simple structure. 1. A three-axis upstream-modulated low-noise magnetoresistive sensor , comprising:an X-axis magnetoresistive sensor;a Y-axis magnetoresistive sensor; anda Z-axis magnetoresistive sensor, an X-axis magnetoresistive sensing unit array,', 'an X-axis soft ferromagnetic flux concentrator array, and', 'an X-axis modulator wire array,', 'wherein the X-axis magnetoresistive sensing unit array is electrically interconnected into an X-axis magnetoresistive sensing bridge, the X-axis modulator wire array is electrically interconnected into a two-port X-axis excitation coil, in order to measure an external magnetic field, the two-port X-axis excitation coil is configured to be supplied with high-frequency alternating current at a frequency f, from a current ...

Подробнее
Номер записи: 43
29-04-2021 дата публикации

Magnetic sensor

Номер: US20210123992A1
Автор: Kenichi Takano, Kentaro Harada, Tsuyoshi Umehara
Принадлежит: TDK Corp

A magnetic sensor is provided that can attenuate a magnetic field in a direction that is perpendicular to the magnetic field detecting direction at a higher rate than the magnetic field in the magnetic field detecting direction. Magnetic sensor 1 has: first soft magnetic layer 3 ; a pair of second soft magnetic layers 4 A, 4 B that is positioned at a location that is different from first soft magnetic layer 3 in the Z direction of first soft magnetic layer 3 ; and magnetic field detecting element 2 that is positioned between first soft magnetic layer 3 and second soft magnetic layers 4 A, 4 B in the Z direction, wherein magnetic field detecting element 2 has a magnetic field detecting direction that is parallel to a direction in which the pair of second soft magnetic layers 4 A, 4 B is arranged. As viewed in the Z direction, second soft magnetic layers 4 A, 4 B are positioned on both sides of a center of first soft magnetic layer 3 , and magnetic field detecting element 2 is positioned inside of a periphery of first soft magnetic layer 3.

Подробнее
Номер записи: 44
09-06-2022 дата публикации

Magnetic sensor and inspection device

Номер: US20220175289A1
Автор: Akira Kikitsu, Hitoshi Iwasaki, Satoshi Shirotori, Yoshihiro Higashi, Yoshinari Kurosaki
Принадлежит: Toshiba Corp

According to one embodiment, a magnetic sensor includes a first magnetic element, a second magnetic element, a third magnetic element located between the first and second magnetic elements in a first direction, a fourth magnetic element located between the third and second magnetic elements in the first direction, a first conductive member, a second conductive member, a third conductive member located between the first and second conductive members in the first direction, a fourth conductive member located between the third and second conductive members in the first direction, a first magnetic member, a second magnetic member, a third magnetic member located between the first and second magnetic members in the first direction, a fourth magnetic member located between the third and second magnetic members in the first direction, and a fifth magnetic member located between the third and fourth magnetic members in the first direction.

Подробнее
Номер записи: 45
30-04-2015 дата публикации

Implant Magnet Distance Determination

Номер: US20150119687A1
Автор: Hornsteiner Christoph
Принадлежит:

A method is described for estimating skin thickness over an implanted magnet. A plane is defined that is perpendicular to the skin of a patient over an implanted magnet and characterized by x- and y-axis coordinates. The magnetic field strength of the implanted magnet is measured using an array of magnetic sensors on the skin of the patient. From the measured magnetic field strength, at least one x-axis coordinate in the plane is determined for at least one y-axis zero position on the array where a y-axis component of the measured magnetic field strength is zero. From that, a y-axis coordinate of the at least one y-axis zero is calculated as a function of the at least one x-axis coordinate, such that the y-axis coordinate represents thickness of the skin over the implanted magnet. 1. A method of estimating skin thickness over an implanted magnet comprising:defining a plane perpendicular to the skin of a patient over an implanted magnet, characterized by x- and y-axis coordinates;measuring magnetic field strength of the implanted magnet using an array of magnetic sensors on the skin of the patient;determining from the measured magnetic field strength at least one x-axis coordinate in the plane for at least one y-axis zero position on the array where a y-axis component of the measured magnetic field strength is zero; andcalculating a y-axis coordinate of the at least one y-axis zero as a function of the at least one x-axis coordinate, whereby the y-axis coordinate represents thickness of the skin over the implanted magnet.2. The method according to claim 1 , wherein x-axis co-ordinates are determined for two y-axis zero positions.3. The method according to claim 1 , wherein the magnetic field strength is measured using a one dimensional sensor array.4. The method according to claim 3 , wherein the sensor array is aligned by user interaction before taking the magnetic field strength measurements.5. The method according to claim 3 , wherein the sensor array is aligned ...

Подробнее
Номер записи: 46
09-04-2020 дата публикации

Dispensing of alkali metals via electrodeposition using alkali metal salts in ionic liquids

Номер: US20200109481A1
Автор: Daniel Sobek, Sukanta Bhattacharyya
Принадлежит: HI LLC

A method for generating alkali metal in a zero oxidation state includes disposing an alkali metal compound in an ionic liquid, the ionic liquid including an organic cation and an anion; and electrolyzing the alkali metal compound in the ionic liquid to release the alkali metal in the zero oxidation state. The alkali metal in the zero oxidation state can be used in a variety of application including in a vapor cell of a magnetometer.

Подробнее
Номер записи: 47
09-04-2020 дата публикации

Apparatus and method for scanning artificial structure

Номер: US20200110139A1
Автор: Chen Chien-Chih, CHU Yi-Chen, CHUANG Yung-Chieh
Принадлежит:

A method for scanning artificial structure, wherein a scanning artificial structure apparatus comprises four magnetic-field sensors, the four magnetic-field sensors are non-coplanar configured, the method comprises following steps of: moving the scanning artificial structure apparatus along a scanning path within a to-be-tested area, in the meantime, measuring magnetic field by the four magnetic-field sensors, and recording a position sequence when measuring magnetic field, wherein four magnetic-field measurement sequences are measured by the four magnetic-field sensors; and calculating a magnetic-field variation distribution from the four magnetic-field measurement sequences and the position sequence, wherein the magnetic-field variation distribution is corresponding to at least one artificial structure distribution. 1. A method for scanning artificial structure , wherein a scanning artificial structure apparatus comprises a magnetic field sensing portion , wherein said magnetic field sensing portion comprises a first magnetic field sensor , a second magnetic field sensor , a third magnetic field sensor , and a fourth magnetic field sensor , wherein said first magnetic field sensor , said second magnetic field sensor , said third magnetic field sensor , and said fourth magnetic field sensor are non-coplanar configured , said method comprises following steps of:Step A: moving said scanning artificial structure apparatus along a scanning path within a to-be-tested area, in the meantime, measuring magnetic field by said first magnetic field sensor, said second magnetic field sensor, said third magnetic field sensor, and said fourth magnetic field sensor respectively, and recording a position sequence when measuring magnetic field, wherein a first magnetic field measurement sequence is measured by said first magnetic field sensor, a second magnetic field measurement sequence is measured by said second magnetic field sensor, a third magnetic field measurement sequence ...

Подробнее
Номер записи: 48
02-05-2019 дата публикации

HALL SENSOR

Номер: US20190128975A1
Автор: MOZSÁRY András, PUMMER Roswitha, ROEHRER Georg
Принадлежит:

A Hall sensor has at least four sensor terminals for connecting the Hall sensor and a plurality of Hall sensing element shaving element terminals. The Hall sensing elements are interconnected with the element terminals in a connection grid in between the sensor terminals, the connection having more than one dimension. The Hall sensing elements are physically arranged in an arrangement grid having more than one dimension and being different from the connection grid. At least some of the Hall sensing elements are connected to at least two adjacent Hall sensing elements in the connection grid. 1. A Hall sensor comprising at least four sensor terminals for connecting the Hall sensor and a plurality of Hall sensing elements having element terminals , whereinthe Hall sensing elements are interconnected with the element terminals at connection grid positions in a connection grid in between the sensor terminals, the connection grid having more than one dimension;the Hall sensing elements are physically arranged at arrangement grid positions in an arrangement grid having more than one dimension and being different from the connection grid;for at least some of the Hall sensing elements the associated connection grid position is different from the associated arrangement grid position; andat least some of the Hall sensing elements are connected to at least two adjacent Hall sensing elements in the connection grid.2. The Hall sensor according to claim 1 ,wherein the Hall sensing elements of at least one gridline of the arrangement grid are connected to Hall sensing elements within the connection grid, which are not adjacently located within the arrangement grid.3. The Hall sensor according to claim 1 ,wherein the connection grid comprises a first, a second and a third gridline, the Hall sensing elements of the second gridline of the connection grid being connected in between the Hall sensing elements of the first and the third gridline of the connection grid, and the Hall ...

Подробнее
Номер записи: 49
30-04-2020 дата публикации

OPTIMIZING UTILIZATION OF A WIRELESS POSITION SENSOR

Номер: US20200132787A1
Автор: "OBRIEN EDWARD F.", BALASUBRAMANIAN Aditya, Duffy Mark, HEEDER NICHOLAS J., MOLYNEAUX NEVIN R.
Принадлежит:

Methods, apparatuses, and computer program products for optimizing utilization of a wireless position sensor are disclosed. In a particular embodiment, a controller of the wireless position sensor receives output from a magnetic-field-dependent sensor of the wireless position sensor. The magnetic-field-dependent sensor is configured to register the strength of a magnetic field of a magnet attached to a mechanical component. In this example, the registered strength corresponds to a position of the mechanical component along a directional path. According to this embodiment, the controller generates a comparison of the output to one or more predefined movement signatures and based on the comparison, determines whether to change an operating state of one or more components of the wireless position sensor. 1. A method of optimizing utilization of a wireless position sensor , the method comprising:receiving, by a controller of a wireless position sensor, output from a magnetic-field-dependent sensor of the wireless position sensor, the magnetic-field-dependent sensor configured to register the strength of a magnetic field of a magnet attached to a mechanical component, the registered strength corresponding to a position of the mechanical component along a directional path;generating, by the controller, a comparison of the output to one or more predefined movement signatures; andbased on the comparison, determining, by the controller, whether to change an operating state of one or more components of the wireless position sensor.2. The method of further comprising in response to determining to change an operating state of one or more components of the wireless position sensor claim 1 , waking up claim 1 , by the controller claim 1 , a wireless communicator of the wireless position sensor and transmitting claim 1 , by the controller claim 1 , using the wireless communicator claim 1 , to a receiver claim 1 , data corresponding to the output.3. The method of further comprising ...

Подробнее
Номер записи: 50
24-05-2018 дата публикации

CURRENT SENSOR POSITIONING ERROR CORRECTION USING AUXILIARY HALL CELLS

Номер: US20180143268A1
Автор: Hegedus Akos
Принадлежит:

A current sensor may comprise a first Hall cell, a second Hall cell, a third Hall cell, a fourth Hall cell, and a fifth Hall cell to a set of magnetic field values associated with a magnetic field generated by a current passing through a current rail. The second Hall cell may be positioned at a first distance from the first Hall cell, and the third Hall cell may be positioned at a second distance from the first Hall cell such that the third Hall cell is positioned between the first Hall cell and the second Hall cell. The fourth Hall cell may be positioned adjacent to the first Hall cell, and the fifth Hall cell may be positioned at a third distance from the fourth Hall cell. The magnetic field values may be used to determine an amount of current associated with the current passing through the current rail. 120-. (canceled)21. A magnetic current sensor , comprising: 'the first magnetic field value being associated with a magnetic field generated by a current passing through a current rail;', 'a first primary Hall cell to sense a first magnetic field value,'} the second magnetic field value being associated with the magnetic field generated by the current passing through the current rail, and', the axis being in a direction substantially perpendicular to the current passing through the current rail, and', 'a midpoint of the current rail and a midpoint of the first distance between the first primary Hall cell and the second primary Hall cell not being aligned and being separated by a particular distance along the axis; and, 'the second primary Hall cell being positioned along an axis at a first distance from the first primary Hall cell,'}], 'a second primary Hall cell to sense a second magnetic field value,'} the second distance being less than the first distance such that the auxiliary Hall cell is positioned along the axis and between the first primary Hall cell and the second primary Hall cell, and', 'the first magnetic field value, the second magnetic field value, ...

Подробнее
Номер записи: 51
15-09-2022 дата публикации

Wall thinning detection system, wall thinning detection method and non-transitory computer readable storage medium

Номер: US20220290966A1
Автор: Hideki Yoshida
Принадлежит: Yokogawa Electric Corp

A wall thinning detection system includes a polarized magnetic charge distribution computing unit configured to compute a spatial distribution of polarized magnetic charges, which is an aggregate of a plurality of magnetic dipoles in a monitoring area, based on a magnetic field distribution in the monitoring area of a metal instrument measured by a magnetic field sensor array comprising a plurality of magnetic field sensors, and a wall thinning distribution computing unit configured to compute a wall thinning distribution in the monitoring area based on the spatial distribution of the polarized magnetic charges calculated by the polarized magnetic charge distribution computing unit.

Подробнее
Номер записи: 52
02-06-2016 дата публикации

Magnetic detecting device and sheet processing apparatus

Номер: US20160155282A1
Автор: Junji Miura, Seiji Ikari, Tomonori Makino
Принадлежит: Toshiba Corp

A magnetic detecting device according to an embodiment includes: a magnetic sensor head in which a plurality of magnetic sensing elements including a first magnetic sensing element and a second magnetic sensing element are arranged; and an environmental magnetism corrector. The plurality of magnetic sensing elements is arranged in one line over a length that is greater than a width of a sheet, in a direction that is orthogonal to a movement direction of the sheet. The environmental magnetism corrector corrects a first output signal output by the first magnetic sensing element, based on a second output signal output by the second magnetic sensing element. The magnetic sensor head has a sheet passage area that faces a sheet that passes over the magnetic sensor head, the first magnetic sensing element is positioned inside the sheet passage area, and the second magnetic sensing element is positioned outside the sheet passage area.

Подробнее
Номер записи: 53
16-05-2019 дата публикации

Differential magnetic load cells for compact low-hysteresis force and torque measurements

Номер: US20190146043A1
Автор: Calisch Samuel E., Gershenfeld Neil A.
Принадлежит: Massachusetts Institute of Technology

Magnetic load cells that measure force and/or torque are constructed from magnets and one or more arrays of magnetic field sensors. The magnetic field sensors are structured in a tight array where the array is attached to a first portion of a frame. The magnets are operated in pairs polarized in opposition to one-another. In particular, pairs of concentric magnets create sharp field boundaries. The magnets are attached to a second portion of the frame with the magnets separated from the array of field sensors by a small gap. The second portion of the frame is free to displace or rotate in relation to the first portion of the frame when a force or torque is applied to it. The displacement results in a measurable differential change in magnetic field reported by the array that can be sampled and processed to relate to the applied force or torque. 1. A non-contact magnetic load cell device for measuring force of torque comprising:an array of magnetic field sensors attached to a first portion of a frame, members of the array being processed differentially to report differences in magnetic field strength;a plurality of magnets attached to a second portion of the frame, the magnets separated from the array of field sensors by a small gap; the magnets polarized in opposition to one-another;wherein, the second portion of the frame is free to displace in relation to the first portion of the frame;whereby, displacement of the second portion of the frame in relation to the first portion of the frame results in a measurable differential change in magnetic field reported by the array of magnetic field sensors that can be sampled and processed to relate to a force or torque applied between the first portion of the frame and the second portion of the frame.2. The non-contact magnetic load cell device of wherein the plurality of magnets are permanent magnets.3. The non-contact magnetic load cell device of wherein the array of magnetic field sensors comprises Hall-effect sensors.4. ...

Подробнее
Номер записи: 54
17-06-2021 дата публикации

VECTOR LENGTH VARIANCE CHECK FOR FUNCTIONAL SAFETY OF ANGLE SENSORS

Номер: US20210180938A1
Автор: HAMMERSCHMIDT Dirk
Принадлежит: INFINEON TECHNOLOGIES AG

A magnetic angle sensor system includes a first magnetic sensor configured to generate a first sensor signal, a second magnetic sensor configured to generate a second sensor signal, and at least one signal processor configured to: generate an angle signal including an angular value corresponding to an orientation of a magnetic field based on the first sensor signal and the second sensor signal; generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal; determine a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths; compare the determined vector length variance to a tolerance range defined by at least one of a minimum tolerance threshold and a maximum tolerance threshold; and generate a warning signal on a condition that the determined vector length variance is outside the tolerance range. 1. A magnetic angle sensor system , comprising:a first magnetic sensor configured to generate a first sensor signal in response to a first component of a magnetic field;a second magnetic sensor configured to generate a second sensor signal in response to a second component of the magnetic field; and generate an angle signal including an angular value corresponding to an orientation of the magnetic field based on the first sensor signal and the second sensor signal,', 'generate a vector length signal comprising a plurality of vector lengths corresponding to the first sensor signal and the second sensor signal based on the first sensor signal and the second sensor signal, wherein each of the plurality of vector lengths is sampled at a different sample time of a plurality of consecutive sample times,', 'determine a vector length variance between at least two consecutively sampled vector lengths of the plurality of vector lengths,', 'compare the determined vector length variance to a tolerance range defined by at least one of a minimum ...

Подробнее
Номер записи: 55
17-06-2021 дата публикации

Device and method for detecting defect contour with omnidirectionally equal sensitivity based on magnetic excitation

Номер: US20210181270A1
Автор: Lisha PENG, SHEN Wang, Songling Huang, Wei Zhao, Wenzhi WANG, Zijing Huang
Принадлежит: TSINGHUA UNIVERSITY

A device and a method for detecting a defect contour with omnidirectionally equal sensitivity based on magnetic excitation are provided. The device includes a magnetic sensor array arranged in a spatially uniform magnetic field and configured to collect a magnetic field signal, and a data analysis module configured to analyze the magnetic field signal, extract a distorted magnetic field signal, and obtain an image of the defect contour based on the distorted magnetic field signal.

Подробнее
Номер записи: 56
09-06-2016 дата публикации

MAGNETORESISTIVE MIXER

Номер: US20160164463A1
Автор: Deak James Geza, Zhou Zhimin
Принадлежит: Multidimensional Technology Co., Ltd.

A magnetoresistive mixer, comprising a spiral coil, a bridge-type magnetoresistive sensor and a magnetic shielding layer, wherein the spiral coil is located between the bridge-type magnetoresistive sensor and the magnetic shielding layer. Four tunnel magnetoresistive sensor units forming the bridge-type magnetoresistive sensor respectively contain N array-type magnetic tunnel junction rows. The magnetic tunnel junction rows are connected in series, parallel, or combination of series and parallel connections to form two port structures. The four tunnel magnetoresistive sensor units are respectively located in two regions of the spiral coil having opposite current directions, sensing axes of magnetic tunnel junctions are perpendicular to the current directions, and in addition, the distribution characteristics of magnetic fields in directions of the sensing axes of the tunnel magnetoresistive sensor units to the magnetic field in the two regions are opposite, and the distribution characteristics in a single region are the same. The first frequency signal is input through the two ends of the spiral coil, the second frequency signal is input between the power and -ground ports of the bridge-type magnetoresistive sensor, and mixing signals are output through a signal output end of the bridge-type magnetoresistive sensor. The magnetoresistive mixer has the characteristics of good linearity, good input signal isolation, and low power consumption. 1. A magnetoresistive mixer , for mixing a first frequency signal source input and a second frequency signal source input to obtain a mixing signal , the magnetoresistive mixer comprising:a spiral coil,a bridge-type magnetoresistive sensor anda magnetic shielding layer,wherein the spiral coil is located between the magnetic shielding layer and the bridge-type magnetoresistive sensor;wherein the bridge-type magnetoresistive sensor comprises four magnetoresistive sensor units forming a bridge-type structure, the magnetoresistive ...

Подробнее
Номер записи: 57
14-06-2018 дата публикации

Magnetometric sensor

Номер: US20180164129A1
Автор: Yoshihiko Sato
Принадлежит: Tokai Rika Co Ltd

A magnetometric sensor includes a plurality of magnetometric sensor elements each including a plurality of magneto-sensitive portions arranged, in each of fan-shaped magneto-sensitive regions, intersecting with a radial direction of the magneto-sensitive regions. The magnetometric sensor elements are configured such that the magneto-sensitive regions are arranged rotated at 90° intervals and a bridge circuit is formed by electrically connecting the magnetometric sensor elements to each other. The magneto-sensitive portions each have a shape defined enclosed by two arcs to have a same width such that a resistance value thereof varies according to a change in a direction of a magnetic field.

Подробнее
Номер записи: 58
21-05-2020 дата публикации

AIRBORNE ELECTROMAGNETIC SURVEY APPARATUS AND AIRBORNE ELECTROMAGNETIC SURVEY METHOD

Номер: US20200159211A1
Автор: JOHMORI Akira
Принадлежит: NeoScience Co., Ltd.

A transmitter loop is carried by a first aircraft. A receiver sensor is carried by a second aircraft. The first aircraft and the second aircraft fly away from each other. The transmitter loop transmits a primary magnetic field. The transmitted primary magnetic field induces a current in the earth. The induced current generates a secondary magnetic field in the air. The receiver sensor receives the generated secondary magnetic field, and detects strength of the received secondary magnetic field. 1. An airborne electromagnetic survey apparatus comprising:a first aircraft;a second aircraft capable of flying away from the first aircraft;a transmitter loop carried by the first aircraft, and transmitting a primary magnetic field; anda receiver sensor carried by the second aircraft, and receiving a secondary magnetic field generated in air by a current induced in earth by the primary magnetic field and detecting strength of the secondary magnetic field.2. The airborne electromagnetic survey apparatus according to claim 1 , further comprisinga position maintaining device maintaining a position of the second aircraft relative to the first aircraft in a set position.3. The airborne electromagnetic survey apparatus according to claim 2 , wherein a first positioning device carried by the first aircraft, and measuring a position of the first aircraft;', 'a second positioning device carried by the second aircraft, and measuring a position of the second aircraft; and', 'a flight control device carried by at least one of the first aircraft and the second aircraft, and performing, on at least one of the first aircraft and the second aircraft, flight control of maintaining the position of the second aircraft relative to the first aircraft in the set position based on the position of the first aircraft and the position of the second aircraft., 'the position maintaining device includes4. The airborne electromagnetic survey apparatus according to claim 3 , whereinthe first positioning ...

Подробнее
Номер записи: 59
21-06-2018 дата публикации

HYBRID NAVIGATION SENSOR

Номер: US20180172420A1
Автор: FOSTER DANIEL J., Hein Matthew
Принадлежит:

A sensor assembly includes a first magnetic field sensor that is a first type of sensor and has a first magnetic field sensitivity in a first primary sensing direction. The first primary sensing direction is along a longitudinal axis of the sensor assembly. The sensor assembly further includes a second magnetic field sensor that is a second type of sensor different than the first type of sensor and has a second magnetic field sensitivity in a second primary sensing direction that is less than the first magnetic field sensitivity. The second primary sensing direction is along a second axis that is different than the longitudinal axis. 1. A sensor assembly comprising:a first magnetic field sensor that is a first type of sensor and has a first magnetic field sensitivity in a first primary sensing direction, wherein the first primary sensing direction is along a longitudinal axis of the sensor assembly; anda second magnetic field sensor that is a second type of sensor different than the first type of sensor and has a second magnetic field sensitivity in a second primary sensing direction that is less than the first magnetic field sensitivity, wherein the second primary sensing direction is along a second axis that is different than the longitudinal axis.2. The sensor assembly of claim 1 , wherein the first type of sensor is a giant-magneto-impedance sensor claim 1 , and wherein the second type of sensor is a magneto-resistive (MR) sensor.3. The sensor assembly of claim 2 , wherein the second magnetic field sensor includes an MR sensing element and at least one flux guide.4. The sensor assembly of claim 3 , wherein the MR sensing element is one of an anisotropic-magneto-resistive sensing element claim 3 , giant-magneto-resistive sensing element claim 3 , tunneling-magneto-resistive sensing element claim 3 , hall-effect sensing element claim 3 , colossal magneto-resistive sensing element claim 3 , extraordinary magneto-resistive sensing element claim 3 , and spin hall ...

Подробнее
Номер записи: 60
21-06-2018 дата публикации

ROTATING SHAFT POSITION ENCODER SYSTEM

Номер: US20180172421A1
Автор: Carter James B., Hoell, JR. Joseph A.
Принадлежит: SEGWAY INC.

Different approaches for providing increased redundancy in determining a position of a rotating member, for example, a motor shaft, with galvanically isolated sensors. In one aspect, two separate on-axis sensing chips are positioned in line with one another on a PCB but each on opposite sides or surfaces of the PCB. Respective sensing surfaces are essentially parallel to one another. Advantageously, greater electrical isolation is provided by placing the two sensors on opposite sides of the PCB. 1. A system for detecting rotation of a component , the system comprising:a magnet having a magnetic field coupled to the component;a substrate having a first surface and a second surface;a first magnetic field sensor provided on the first surface of the substrate; anda second magnetic field sensor provided on the second surface of the substrate and directly opposite the first magnetic field sensor,wherein a field sensing surface of the first magnetic field sensor is positioned closer to the magnet than a field sensing surface of the second magnetic field sensor.2. The system of claim 1 , further comprising:a layer of magnetic material disposed over the field sensing surface of the second magnetic field sensor.3. The system of claim 2 , further comprising:a layer of non-magnetic material disposed between the field sensing surface of the second magnetic sensor and the magnetic material layer.4. The system of claim 3 , wherein the non-magnetic material layer comprises at least one of: a plastic or a diamagnetic material.5. The system of claim 4 , wherein the diamagnetic material is copper.6. The system of claim 3 , wherein the non-magnetic material layer has a thickness not greater than 5 mm.7. The system of claim 2 , wherein the magnetic material layer comprises at least one of: a ferrous material or magnetic-grade steel.8. The system of claim 2 , wherein the magnetic material layer has a thickness not greater than 2 mm.9. The system of claim 1 , wherein the substrate is a ...

Подробнее
Номер записи: 61
21-06-2018 дата публикации

Drive Device with Detection Apparatus and Method

Номер: US20180172475A1
Автор: Braun Manuel, Quaas Jorg, TRAPASSO Franco
Принадлежит:

A drive device for making available a driving movement of a drive input element, which drive device includes a magnet arrangement, at least two magnetic field sensor elements which are spaced apart from one another and are designed to make available magnetic field measured values, and a detection apparatus which is designed to detect a position of the drive input element on the basis of one or more of the magnetic field measured values. The detection apparatus is designed to check the validity of the detection of position and to make available a validity signal as a function of the result of the check in accordance with at least two magnetic field measured values from at least two magnetic field sensor elements and/or in accordance with at least two position values based on the at least two magnetic field measured values and taking into account checking information which represents a reference relationship between magnetic field measured values and/or position values. 1. A drive device for providing a driving movement of a drive body , which drive body comprises a magnet arrangement , the drive device comprising:at least two magnetic field sensor elements which are spaced apart from one another and are adapted to provide magnetic field measured values; anda detection apparatus which is adapted to detect a position of the drive body on the basis of one or more of the magnetic field measured values,wherein the detection apparatus is adapted to check the validity of the detection of position in accordance with at least two magnetic field measured values from at least two magnetic field sensor elements which are adapted as pixel cells of the same sensor cell and/or in accordance with at least two position values based on the at least two magnetic field measured values and taking into account checking information which represents a target relationship between magnetic field measured values and/or position values, and to provide a validity signal as a function of the ...

Подробнее
Номер записи: 62
16-07-2015 дата публикации

SENSOR DEVICE

Номер: US20150198678A1
Автор: PILLA Camillo
Принадлежит:

A sensor device having a first housing with a first semiconductor body and a plurality of metallic terminal contacts for electrical contacting of a first sensor, and a second housing with a second semiconductor body with a plurality of metallic terminal contacts for electrical contacting of a second sensor. A section of the plurality of terminal contacts penetrates the second housing on the face side and the second semiconductor body is arranged with a back surface on a front side of the second metal substrate. The two housings form a module, whereby the two housings are connected form-fittingly to one another in the shape of a stack by a fixing device in a way in which the bottom side of the first housing is joined to the bottom side of the second housing and the plurality of terminal contacts of the two housings point in the same direction. 1. A sensor device comprising:a first housing with a bottom side, a top side, a face side, a back side, a first side surface, and a second side surface, the face side and the back side and the first and second side surfaces being arranged between the top side and the bottom side;a first semiconductor body with a top surface and a back surface formed in the first housing;a first metal substrate with a front side and a back side;a plurality of terminal contacts arranged on the top surface of the first semiconductor body for electrical contacting of a first magnetic field sensor monolithically integrated with the first semiconductor body, wherein a section of the plurality of terminal contacts penetrates the first housing on the face side, and wherein the first semiconductor body is arranged with the back surface on the front side of the first metal substrate, and wherein the first magnetic field sensor is formed on the top surface of the first semiconductor body, and wherein the first magnetic field sensor comprises a first main extension plane that is arranged parallel to the top surface of the first semiconductor body;a second ...

Подробнее
Номер записи: 63
05-07-2018 дата публикации

VECTOR MAGNETOMETERS NETWORK AND ASSOCIATED POSITIONING METHOD

Номер: US20180188334A1
Автор: ALOUI Saifeddine, Labyt Etienne, Le Prado Matthieu
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

The invention relates to a method of localisation of vector magnetometers arranged in a network, comprising the following steps: 1. Method for localisation of at least one vector magnetometer , comprising the following steps:generation of m reference magnetic fields by a magnetic field source, where m is an integer greater than or equal to 2, the amplitudes of the m magnetic fields being known and the directions of the m magnetic fields being known and distinct;measurement of the m reference magnetic fields along n axes of at least one vector magnetometer, where n is an integer greater than or equal to 2 and m and n are such that m*n≥6;determination of the position and orientation of the at least one vector magnetometer relative to the magnetic field source, starting from the measurement of the m reference magnetic fields on the n axes of the at least one vector magnetometer.2. Method according to claim 1 , in which the m reference magnetic fields are emitted simultaneously claim 1 , the amplitudes of the m magnetic fields being distinct.3. Method according to claim 1 , in which the m reference magnetic fields are emitted sequentially.4. Method according to claim 3 , in which the generation step includes a time step in which a reference magnetic field is not generated claim 3 , a step to measure an ambient magnetic field along the n axes of the at least one vector magnetometer is done during said time slot claim 3 , and the determination step includes subtraction of the measurement of the ambient magnetic field from the measurement of the m reference magnetic fields.5. Method according to claim 1 , in which the magnetic field source makes a frequency modulation of the m reference magnetic fields.6. Method according to claim 5 , in which the magnetic field source makes a frequency multiplexing of the m reference magnetic fields.7. Method according to claim 1 , in which the magnetic field source comprises m coils and a frequency generator to inject a current with ...

Подробнее
Номер записи: 64
20-06-2019 дата публикации

Smd-coil-based torque-sensor for tangential field measurement

Номер: US20190187011A1
Автор: Christoph Boeld, Pekka Sipilae
Принадлежит: GE Avio SRL

According to some embodiments, system and methods are provided, comprising an installed product including a drive shaft; a magnetostrictive sensor having a sensor probe comprising: a substrate; a drive coil operative to receive a drive current and to emit a magnetic field through the drive shaft, wherein the drive coil is mounted on the substrate; one or more sense coils operative to receive the magnetic field and to transmit a signal based on the received magnetic field, wherein the one or more sense coils are mounted on the substrate; and wherein the magnetic field is emitted from the drive coil in a transverse direction to a radius of the drive shaft. Numerous other aspects are provided.

Подробнее
Номер записи: 65
23-07-2015 дата публикации

CURRENT DETECTION STRUCTURE

Номер: US20150204919A1
Автор: Akimoto Katsuya, CHIWATA Naofumi, FUTAKUCHI Naoki, FUTATSUMORI Takahiro, HAYASHI Shinya, IKEDA Yukio, OKUYAMA Ken, TAKAHASHI Kazuhisa, Tate Hisashi
Принадлежит:

A current detection structure includes a plurality of busbars arranged in parallel, and a plurality of magnetic detection elements each provided for corresponding one of the plurality of busbars so as to measure a strength of a magnetic field generated by a current flowing through the corresponding busbar. The plurality of magnetic detection elements are mounted on a single circuit board. 1. A current detection structure , comprising:a plurality of busbars arranged in parallel; anda plurality of magnetic detection elements each provided for corresponding one of the plurality of busbars so as to measure a strength of a magnetic field generated by a current flowing through the corresponding busbar,wherein the plurality of magnetic detection elements are mounted on a single circuit board.2. The current detection structure according to claim 1 , wherein the plurality of magnetic detection elements are mounted on a same surface of the circuit board.3. The current detection structure according to claim 2 , wherein the plurality of magnetic detection elements are arranged in a line on the circuit board.4. The current detection structure according to claim 1 , wherein the plurality of busbars are arranged in contact with the circuit board.5. The current detection structure according to claim 4 , wherein an alignment mark indicating a position for arranging the plurality of busbars is formed on the circuit board.6. The current detection structure according to claim 1 , wherein an alignment protrusion for aligning the busbars with respect to the circuit board is formed on the circuit board so as to be in contact with a sidewall of the busbars or an inner wall of a hole formed in the busbars.7. The current detection structure according to claim 6 , wherein a clip for locking the busbars is formed at a tip of the alignment protrusion.8. The current detection structure according to claim 1 , wherein a through-hole is formed penetrating the busbars claim 1 , andwherein the ...

Подробнее
Номер записи: 66
22-07-2021 дата публикации

SYSTEM AND METHOD FOR DETERMINING AT LEAST ONE CHARACTERISTIC OF A TRANSMITTING COIL

Номер: US20210223335A1
Автор: Hashemi Daniel, IIZUKA Hideo, Lee Taehwa
Принадлежит:

A system for determining at least one characteristic of a transmitting coil generating a magnetic field may include a first measurement coil being wound in a first direction, a second measurement coil being wound in a second direction, a voltage measuring device, and at least one processor in communication with the voltage measuring device. The first measurement coil and the second measurement coil may be adjacent to one another. The voltage measuring device may be configured to measure a first voltage of the first measurement coil and a second voltage of the second measurement coil in response to the magnetic field generated by the transmitting coil. The at least one processor may be configured to determine the at least one characteristic of the transmitting coil based on a ratio between the first voltage and the second voltage at a predetermined frequency. 1. A system for determining at least one characteristic of a transmitting coil generating a magnetic field , the system comprising:a first measurement coil being wound in a first direction;a second measurement coil being wound in a second direction;the first measurement coil and the second measurement coil are adjacent to one another;a voltage measuring device configured to measure a first voltage of the first measurement coil in response to the magnetic field generated by the transmitting coil and a second voltage of the second measurement coil in response to the magnetic field generated by the transmitting coil; andat least one processor in communication with the voltage measuring device, the at least one processor being configured to determine the at least one characteristic of the transmitting coil based on a ratio between the first voltage and the second voltage at a predetermined frequency.2. The system of claim 1 , wherein the at least one characteristic of the transmitting coil is at least one of a direction that the transmitting coil is wound and an angle of incidence of the transmitting coil with ...

Подробнее
Номер записи: 67
11-06-2020 дата публикации

Switch-mode power converters using hall effect sensors and methods thereof

Номер: US20200186050A1
Автор: Qiang Luo, Senlin Yang
Принадлежит: On Bright Electronics Shanghai Co Ltd

System and method for transmitting and receiving. For example, the system includes a transmitter, one or more wires, and a receiver connected to the transmitter through the one or more wires. The transmitter is configured to generate a first current, and the receiver is configured to receive the first current. The receiver includes a coil, a Hall effect sensor, and a comparator, and the Hall effect sensor includes a first electrode and a second electrode. The coil is electrically isolated from the Hall effect sensor and configured to generate a magnetic field based at least in part on the first current flowing through the coil, and the Hall effect sensor is configured to sense the magnetic field and generate a first voltage at the first electrode and a second voltage at the second electrode. The comparator includes a first input terminal and a second input terminal.

Подробнее
Номер записи: 68
27-06-2019 дата публикации

APPARATUS FOR MEASURING A BIOMAGNETIC FIELD

Номер: US20190192021A1
Автор: Ehrlen Malte, Kim Bonggun, Kim Byeongsoo
Принадлежит:

A biomagnetic field measuring apparatus enabling reliable biomagnetic field measurements in clinical practice, having a plurality of magnetic field sensors being arranged in an array in a sensor plane, including a plurality of first magnetic field sensors being designed and configured to measure a first component of the magnetic field, a plurality of second magnetic field sensors being designed and configured to measure a second component of the magnetic field, and a plurality of third magnetic field sensors being designed and configured to measure a third component of the magnetic field, the first, second and third components of the magnetic field being orthogonal to each other. Viewed perpendicular to the sensor plane, the first magnetic field sensors and the second magnetic field sensors are arranged essentially centrally and the third magnetic field sensors are arranged essentially around the first and second magnetic field sensors. 1345134545345345. Apparatus for measuring a biomagnetic field comprising a plurality of magnetic field sensors ( , , ) being arranged in an array () in a sensor plane , the plurality of magnetic field sensors ( , , ) consisting of a plurality of first magnetic field sensors () being designed and configured to measure a first component of the magnetic field , a plurality of second magnetic field sensors () being designed and configured to measure a second component of the magnetic field , and a plurality of third magnetic field sensors () being designed and configured to measure a third component of the magnetic field , the first , second and third components of the magnetic field being orthogonal to each other , and wherein , viewed from a direction perpendicular to the sensor plane , the first magnetic field sensors () and the second magnetic field sensors () are arranged essentially centrally and the third magnetic field sensors () are arranged essentially around the first and second magnetic field sensors ( , ).245. The ...

Подробнее
Номер записи: 69
21-07-2016 дата публикации

CURRENT SENSOR POSITIONING ERROR CORRECTION USING AUXILIARY HALL CELLS

Номер: US20160209479A1
Автор: Hegedus Akos
Принадлежит:

A current sensor may comprise a first Hall cell, a second Hall cell, a third Hall cell, a fourth Hall cell, and a fifth Hall cell to a set of magnetic field values associated with a magnetic field generated by a current passing through a current rail. The second Hall cell may be positioned at a first distance from the first Hall cell, and the third Hall cell may be positioned at a second distance from the first Hall cell such that the third Hall cell is positioned between the first Hall cell and the second Hall cell. The fourth Hall cell may be positioned adjacent to the first Hall cell, and the fifth Hall cell may be positioned at a third distance from the fourth Hall cell. The magnetic field values may be used to determine an amount of current associated with the current passing through the current rail. 1. A magnetic current sensor , comprising: 'the first magnetic field value being associated with a magnetic field generated by a current passing through a current rail;', 'a first primary Hall cell to sense a first magnetic field value,'} the second magnetic field value being associated with the magnetic field generated by the current passing through the current rail, and', 'the axis being in a direction substantially perpendicular to the current passing through the current rail; and', 'the second primary Hall cell being positioned along an axis at a first distance from the first primary Hall cell,'}], 'a second primary Hall cell to sense a second magnetic field value,'} the second distance being less than the first distance such that the auxiliary Hall cell is positioned along the axis and between the first primary Hall cell and the second primary Hall cell, and', 'the first magnetic field value, the second magnetic field value, and the third magnetic field value being used to determine an amount of current associated with the current passing through the current rail., 'the auxiliary Hall cell being positioned along the axis at a second distance from the first ...

Подробнее
Номер записи: 70
18-06-2020 дата публикации

MAGNETIC POSITION DETERMINATION SYSTEMS AND METHODS

Номер: US20200191546A1
Автор: Schmitt Jochen
Принадлежит: Analog Devices International Unlimited Company

Systems and methods are provided for determining a position of a magnet. The systems and methods utilize a first sensor located at a first sensor position and arranged to measure at least two components of a magnetic field produced by the magnet, a second sensor located at a second sensor position and arranged to measure at least two components of the magnetic field produced by the magnet, and processing circuitry operatively connected to the first and second sensors to receive signals derived from signals outputted by the first and second sensors. A field angle is calculated from a first differential field of a first field dimension and a second differential field of a second field dimension orthogonal to the first field dimension. The first and second differential fields are calculated based on signals outputted by the first and second sensors. 1. An object position determination system , comprising:a movable object;a magnet configured to produce a magnetic field; anda plurality of magnetic field sensors configured to detect components of the magnetic field produced by the magnet in first and second directions at first and second locations, the magnet or the plurality of magnetic field sensors is coupled to the movable object,', 'the first direction is orthogonal to the second direction, and', at the first location, a first sensor configured to detect a component of the magnetic field in the first direction and a second sensor configured to detect a component of the magnetic field in the second direction, and', 'at the second location, a third sensor configured to detect a component of the magnetic field in the first direction and a fourth sensor configured to detect a component of the magnetic field in the second direction., 'the plurality of magnetic field sensors include], 'wherein2. The system of claim 1 , wherein the magnet is coupled to the movable object and the plurality of magnetic field sensors are fixed in place.3. The system of claim 1 , further ...

Подробнее
Номер записи: 71
29-07-2021 дата публикации

Method and apparatus for contactless voltage and current estimation through measurements of electric and magnetic fields with redundant sensor arrays

Номер: US20210231709A1
Автор: Alan E. Casallas, Enger Knop, Felix Loske, Jeffrey H. Lang, Lutz TRÖGER, Vivek R. Dave
Принадлежит: Harting Electric GmbH and Co KG, Massachusetts Institute of Technology

A multi-sensor, real-time, in-process current and voltage estimation system is disclosed including sensors, affiliated hardware, and data processing algorithms that allow accurate estimation of currents and voltages from magnetic and electric field measurements, respectively. Aspects of the system may be embodied in a detector that is readily attachable to conductors of an energized system for contactless current and/or voltage sensing of the conductors without requiring the conductors to be disconnected from the energized system.

Подробнее
Номер записи: 72
29-07-2021 дата публикации

MAGNETIC FIELD MEASURING APPARATUS, MAGNETIC FIELD MEASURING METHOD AND RECORDING MEDIUM WITH MAGNETIC FIELD MEASURING PROGRAM RECORDED THEREON

Номер: US20210231751A1
Автор: KATAOKA Makoto, Kato Seiichi, Nakamura Takenobu, OKATAKE Shigeki
Принадлежит:

Provided is a magnetic field measuring apparatus for: acquiring the measurement data measured by a magnetic sensor array that is configured by arraying the plurality of magnetic sensor cells to form a surface covering at least a part of a target object to be measured; performing signal separation on a magnetic field spatial distribution indicated by the measurement data based on a position and magnetic sensitivity of each magnetic sensor; generating a calibration magnetic field at a position on a straight line that can be drawn without crossing the plurality of magnetic sensor cells from the measurement space outside the measurement space; and calibrating a sensor error for the magnetic sensor based on a separation error in a case where signal separation has been performed on a spatial distribution of the calibration magnetic field. 1. A magnetic field measuring apparatus , comprising:a magnetic sensor array that is configured by arraying a plurality of magnetic sensor cells to form a surface covering at least a part of a target object to be measured, each of the plurality of magnetic sensor cells having a magnetic sensor including a magnetoresistive element and a magnetic flux concentrator;a measurement data acquiring unit for acquiring measurement data measured by the magnetic sensor array;a signal space separating unit for performing signal separation on a magnetic field spatial distribution indicated by the measurement data based on a position and magnetic sensitivity of each magnetic sensor;a calibration magnetic field generating unit for generating a calibration magnetic field at a position on a straight line that can be drawn without crossing the plurality of magnetic sensor cells from a measurement space outside the measurement space where the plurality of magnetic sensor cells are not arranged in the closed space that is composed of the smallest convex polygon that includes all of the plurality of magnetic sensor cells in a cross-sectional view; anda ...

Подробнее
Номер записи: 73
18-06-2020 дата публикации

CURRENT PROTECTION CIRCUIT AND METHOD FOR HIGH VOLTAGE SYSTEM

Номер: US20200195004A1
Автор: Fan Wenhua, Pang Jianxin, Wang Malin, Xiong Youjun, Zhou Sheng
Принадлежит:

A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold. 1. A current protection circuit for a high voltage system , comprising:a power supply module configured to supply power to a load through a high voltage bus and a low voltage bus;a detection module connected to the high voltage bus and configured to detect a value of current flowing through the high voltage bus;a signal processing module electrically connected to the detection module and configured to amplify the current flowing through the high voltage bus; anda control module electrically connected to the signal processing module, the power supply module, and the load, and configured to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.2. The current protection circuit according to claim 1 , wherein the detection module comprises a resistor.3. The current protection circuit according to claim 1 , wherein the detection module is an isolated component that comprises a hall sensor or a transformer.4. The current protection circuit according to claim 1 , wherein the power supply module comprises an AC/DC power supply having a nominal voltage range.5. The current protection circuit according to claim 1 , wherein the signal processing module comprises a ...

Подробнее
Номер записи: 74
27-07-2017 дата публикации

MAGNETOMETER WITH LIGHT PIPE

Номер: US20170212186A1
Автор: Bruce Gregory S., HAHN Joseph W., HUYNH Duc, LEW Wilbur
Принадлежит: LOCKHEED MARTIN CORPORATION

A device includes a diamond assembly. The diamond assembly includes a diamond with a plurality of nitrogen vacancy centers and electrical components that emit electromagnetic waves. The device also includes a light source configured to emit light toward the diamond and a photo detector configured to detect light from the light source that traveled through the diamond. The device further includes an attenuator between the diamond assembly and the photo detector. The attenuator is configured to attenuate the electromagnetic waves emitted from the electrical components of the diamond assembly. 1. A device comprising:a diamond with a nitrogen vacancy;a light source configured to transmit light toward the diamond;a first sensor configured to sense a first portion of the light transmitted from the light source, wherein the first portion of the light does not travel through the diamond;a second sensor configured to sense a second portion of the light transmitted from the light source, wherein the second portion of the light travels through the diamond;a third sensor configured to sense a third portion of the light, wherein the third portion of the light travels through the diamond to the third sensor;a first light pipe configured to direct the second portion of the light from the diamond to the second sensor;a second light pipe configured to direct the third portion of the light from the diamond to the third sensor, wherein the first light pipe and the second light pipe are aligned along a central axis;a first waveguide cutoff filter surrounding the first light pipe that is configured to attenuate electromagnetic waves; anda second waveguide cutoff filter surrounding the second light pipe.2. The device of claim 1 , wherein the light source is configured to emit the second portion of the light and the third portion of the light in a direction that is perpendicular to the central axis.3. The device of claim 1 , wherein the first light pipe is located on an opposite side of ...

Подробнее
Номер записи: 75
25-06-2020 дата публикации

Magnetic biosensor and method of detecting a biosignal

Номер: US20200200842A1
Автор: Yi-Ching Kuo
Принадлежит: Industrial Technology Research Institute ITRI

A magnetic biosensor includes a fluidic channel, a magnetic sensor and an acoustic wave emitter. The disposition of the magnetic sensor corresponds to the fluidic channel. The acoustic wave emitter includes two wave generating units, and the fluidic channel is disposed between the two wave generating units.

Подробнее
Номер записи: 76
25-06-2020 дата публикации

Magnetic reader sensor device for reading magnetic stripes and method for manufacturing the sensor device

Номер: US20200202082A1
Автор: Ali Alaoui, Ates Gurcan, Jeffrey Childress
Принадлежит: CROCUS TECHNOLOGY SA

The present disclosure concerns a magnetic reader (MR)sensor device for reading magnetic stripes, the MR sensor device comprising a substrate provided on a wafer, a back-end-of-line (BEOL) interconnect layer and a plurality of magneto-resistive sensor elements embedded within the BEOL interconnect layer; the MR sensor device comprising a protective layer having a Vickers hardness of at least 3 GPa. The present disclosure further concerns a method for manufacturing the MR sensor device. The MR sensor device can be brought close to the surface to the magnetic stripe so that the magnetic stripe can be read with an increased resolution.

Подробнее
Номер записи: 77
05-08-2021 дата публикации

Object Tracking Using Magnetic Field Sensing and Backscatter Transmissions

Номер: US20210240273A1
Автор: Kauffmann Alejandro
Принадлежит:

A low-power object tracking system is disclosed that includes an object tracking device that senses one or more magnetic field(s) to determine a position of the object tracking device. The object tracking device includes a magnetic field sensor including one or more receiving coils and position tracking circuitry in communication with the magnetic field sensor. The position tracking circuitry is configured to determine at least one field strength associated with at least one stationary magnetic field sensed at the one or more receiving coils, and to determine position information associated with the housing based at least in part on the at least one field strength. The object tracking device includes a communication interface configured to transmit the position information to at least one remote computing device. 1. An object tracking system , comprising:a magnetic field transmitter disposed within a housing and comprising one or more transmitting coils configured to generate at least one stationary magnetic field; a magnetic field sensor in communication with the magnetic field transmitter and comprising one or more receiving coils configured to sense the at least one stationary magnetic field in response to movement of the object tracking device relative to a surface remote from the housing of the magnetic field transmitter; and', 'position tracking circuitry configured to determine at least one field strength associated with the at least one stationary magnetic field and to determine position information associated with the handwriting input provided by the user based on the at least one field strength;, 'an object tracking device configured to be engaged by a user for movement in response to a handwriting input provided by the user, the object tracking device comprisinga communication interface configured to transmit the position information; anda computing device configured to receive the position information from the communication interface and to initiate at ...

Подробнее
Номер записи: 78
11-07-2019 дата публикации

Side-biased current sensor with improved dynamic range

Номер: US20190212398A1
Автор: Klaus Elian, Rainer Markus Schaller
Принадлежит: INFINEON TECHNOLOGIES AG

A semiconductor package may include a sensor chip to measure an amount of electrical current in a current medium. The sensor chip may include a first magnetic sensing element and a second magnetic sensing element. The semiconductor package may include a magnet that produces a magnetic field. The magnet may be arranged asymmetrically with respect to the first magnetic sensing element and the second magnetic sensing element such that a strength of the magnetic field at the first magnetic sensing element is different from a strength of the magnetic field at the second magnetic sensing element.

Подробнее
Номер записи: 79
02-07-2020 дата публикации

SENSOR UNIT

Номер: US20200209324A1
Автор: HIRABAYASHI Hiraku, UEDA Kunihiro, UMEHARA Tsuyoshi, WADA Yoshimitsu, YAMAWAKI Kazuma
Принадлежит: TDK Corporation

This sensor unit includes a base having a substantially-rectangular planar shape including a first side and a second side that are substantially orthogonal to each other, and a plurality of first sensors provided on the base and arranged on a first axis. The first axis is substantially parallel to the first side and passes through a center position of the base. 1. A sensor unit comprising:a substrate having a substantially-rectangular shape including a first side and a second side that are substantially orthogonal to each other;a circuit chip stacked on the substrate; anda plurality of first sensors provided on a second surface of the circuit chip opposite to a first surface of the circuit chip, the first surface facing the substrate, and arranged on a first axis, the first axis being substantially parallel to the first side and passing through a center position of the substrate or a center position of the circuit chip,the plurality of first sensors having a plurality of sensor portions configured to output signals with different phases in response to changes in an external magnetic field to be detected.2. The sensor unit according to claim 1 , further comprising:a plurality of leads each having one end provided on the substrate, and arranged along the first side or the second side, or arranged along both of the first side and the second side.3. The sensor unit according to claim 1 , whereinone of the first sensors is a center position sensor provided at the center position of the substrate or the center position of the circuit chip, andthe same number of the remaining first sensors, excluding the center position sensor, of the first sensors are provided on either side of the center position sensor to interpose the center position sensor.4. The sensor unit according to claim 1 , whereinthe first sensors have respective rectangular shapes that are substantially equal to each other,sizes, along the first side, of the respective first sensors are substantially same as ...

Подробнее
Номер записи: 80
18-07-2019 дата публикации

HANDHELD PIPELINE INSPECTION TOOL WITH PLANAR EXCITATION COIL

Номер: US20190219542A1
Автор: Ji Yuan, Lott Paul
Принадлежит:

Apparatuses and methods for inspecting a section of pipe are disclosed. The apparatuses includes a handheld pipeline inspection tool that includes a planar excitation coil within a pad and an array of magnetometers disposed within a box attached to the pad. The excitation coil is formed from a plurality of loops of conductive traces printed on printed circuit board within the pad and the excitation coil is energized with an alternating current received from a power source within the box. The energized excitation coil generates a magnetic field that interacts with the section of pipe and the magnetometer array is used to detect variations in the magnetic field due to the presence of defects within the section of pipe. 1. A handheld pipeline inspection tool for examining a section of piping , comprising:a box having a bottom surface and a plurality of magnetometers disposed adjacent to the bottom surface; the pad is coupled to the box at the bottom surface,', 'the excitation coil is disposed adjacent to an outer perimeter of the pad, and', 'the excitation coil is arranged in a loop and the plurality of magnetometers are positioned within the loop., 'a pad having an excitation coil disposed within the pad, wherein—'}2. The handheld pipeline inspection tool of claim 1 , wherein the excitation coil comprises a plurality of loops.3. The handheld pipeline inspection tool of wherein the pad comprises a printed circuit board having conductive traces printed onto the printed circuit board claim 2 , and wherein the plurality of loops is formed from the conductive traces.4. The handheld pipeline inspection tool of claim 3 , further comprising:a power source disposed within the box and configured to generate a current, wherein the power source is operatively coupled to the excitation coil and configured to provide the current to the excitation coil in order to energize the excitation coil and wherein the excitation coil is configured to generate a magnetic field when it receives ...

Подробнее
Номер записи: 81
18-07-2019 дата публикации

Magnetic Field Sensor Having Magnetoresistance Elements with Opposite Bias Directions

Номер: US20190219643A1
Автор: Belin Noémie, Cadugan Bryan, Campiglio Paolo, Lassalle-Balier Rémy, Latham Alexander
Принадлежит: Allegro Microsystems, LLC

A magnetic field sensor can include a substrate, a first magnetoresistance element disposed over the substrate and including a first maximum response axis and a first bias layer structure configured to generate a first bias magnetic field with a first magnetic direction between ninety degrees and sixty degrees relative to the first maximum response axis. The magnetic field sensor can also include a second magnetoresistance element disposed over the substrate and including a second maximum response axis parallel to the first maximum response axis and a second bias layer structure configured to generate a second bias magnetic field with a second magnetic direction parallel to the first magnetic direction and opposed to the first magnetic direction. The first and second magnetoresistance elements can each have a pair of electrical contacts for coupling to circuits. 1. A magnetic field sensor , comprising:a substrate a first maximum response axis;', 'a first bias layer structure configured to generate a first bias magnetic field with a first magnetic direction between ninety degrees and sixty degrees relative to the first maximum response axis;', 'a first electrical contact coupled to a bottom of the first magnetoresistance element; and', 'a second electric contact coupled to a top of the first magnetoresistance element, wherein the magnetic field sensor further comprises:, 'a first magnetoresistance element disposed over the substrate, comprising a second maximum response axis parallel to the first maximum response axis;', 'a second bias layer structure configured to generate a second bias magnetic field with a second magnetic direction parallel to the first magnetic direction and opposed to the first magnetic direction;', 'a third electrical contact coupled to a bottom of the second magnetoresistance element; and', 'a fourth electric contact coupled to a top of the second magnetoresistance element., 'a second magnetoresistance element disposed over the substrate, ...

Подробнее
Номер записи: 82
09-07-2020 дата публикации

TAPE FEEDER

Номер: US20200217639A1
Автор: HARA Akira, KURA Kazuaki, SHIMAMOTO Yuichi
Принадлежит: FUJI CORPORATION

An angle sensor of a tape feeder includes a magnetic body that rotates in conjunction with the rotation of a sprocket, a magnetic sensor that outputs a detection signal corresponding to the angle of the magnetic body with respect to the feeder main body, and an angle calculating section that performs offset processing for adjusting an origin of the detection signal using a preset offset value, gain processing that adjusts the magnitude of the detection signal using a preset gain value, and that calculates the angle of the magnetic body based on the adjusted detection signal. The control device performs correction processing for correcting at least one of the offset value or the gain value based on the detected signals outputted from the magnetic sensor. 1. A tape feeder for conveying carrier tape containing electronic components to supply the electronic components to an electronic component mounting machine , the tape feeder comprising:a feeder main body;a sprocket rotatably provided on the feeder main body and arranged with multiple engagement protrusions configured to engage with multiple engagement holes formed on the carrier tape;a magnetic body configured to rotate in conjunction with rotation of the sprocket;a magnetic sensor configured to output a detection signal corresponding to an angle of the magnetic body with respect to the feeder main body;an angle calculating section configured to perform offset processing for adjusting an origin of the detection signal using a preset offset value, gain processing for adjusting a magnitude of the detection signal using a preset gain value, and calculation of an angle of the magnetic body based on the adjusted detection signal; anda control device configured to control rotation of the sprocket based on an angle of the magnet body calculated by the angle calculating section.2. The tape feeder according to claim 1 , whereinthe control device is configured to perform correction processing for correcting at least one of ...

Подробнее
Номер записи: 83
09-07-2020 дата публикации

DETERMINING COMPOSITION OF METAL ARTIFACTS USING DYNAMIC ELECTROMAGNETIC PROFILE MEASUREMENTS

Номер: US20200217905A1
Автор: Chen Lucas
Принадлежит:

An apparatus determines the composition of a metal artifact. The apparatus includes an electrical current source, a metal artifact to be tested, two electrical cables, and a first electrical cable and a second electrical cable different from the first electrical cable. Each of the first electrical cable and the second electrical cable is connected between the electrical current source and the metal artifact. During a test, the electrical current source outputs current. When the electrical current source outputs the current, the current travel through at least a portion of the metal artifact. The apparatus further includes a magnetic field sensor that detects, during the test, a magnetic field generated by the metal artifact when the current travels through the at least the portion of the metal artifact. The magnetic field sensor is disposed within a predetermined distance of the metal artifact during the test. 1. An apparatus for determining composition of a metal artifact , the apparatus comprising:an electrical current source;a metal artifact to be tested;a first electrical cable and a second electrical cable different from the first electrical cable, wherein each of the first electrical cable and the second electrical cable is connected between the electrical current source and the metal artifact, wherein during a test, the electrical current source outputs current, wherein when the electrical current source outputs the current, the current travel through at least a portion of the metal artifact; anda magnetic field sensor that detects, during the test, a magnetic field generated by the metal artifact when the current travels through the at least the portion of the metal artifact, wherein the magnetic field sensor is disposed within a predetermined distance of the metal artifact during the test.2. The apparatus of claim 1 , wherein the electrical current source generates current at multiple different selectable levels.3. The apparatus of claim 1 , wherein the ...

Подробнее
Номер записи: 84
09-07-2020 дата публикации

APPARATUS AND METHOD USING A PLURALITY OF MAGNETIC FIELD SENSITIVE DEVICES COUPLED SUCH THAT A SUM OF CURRENTS FLOWS THROUGH AT LEAST ONE OF THE MAGNETIC FIELD SENSITIVE DEVICES

Номер: US20200217906A1
Автор: Ausserlechner Udo
Принадлежит: INFINEON TECHNOLOGIES AG

An apparatus for magnetic field detection includes a power supply and a plurality of magnetic field sensitive devices including at least first, second, and third magnetic field sensitive devices. The first to third magnetic field sensitive devices are coupled to each other and to the power supply such that a first supply current path runs through the first magnetic field sensitive device and not through the second magnetic field sensitive device, a second supply current path runs through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and the first and second current paths run through the third magnetic field sensitive device. An internal resistance of the third magnetic field sensitive device is smaller than both an internal resistance of the first magnetic field sensitive device and an internal resistance of the second magnetic field sensitive device. 1. An apparatus , comprising:a plurality of magnetic field sensitive devices comprising at least a first magnetic field sensitive device, a second magnetic field sensitive device and a third magnetic field sensitive device; anda power supply,wherein the first to third magnetic field sensitive devices are coupled to each other and to the power supply such that a first supply current path runs through the first magnetic field sensitive device and not through the second magnetic field sensitive device, a second supply current path runs through the second magnetic field sensitive device and not through the first magnetic field sensitive device, and the first and the second current paths run through the third magnetic field sensitive device, andwherein an internal resistance of the third magnetic field sensitive device is smaller than both an internal resistance of the first magnetic field sensitive device and an internal resistance of the second magnetic field sensitive device.2. The apparatus of claim 1 , wherein the internal resistance which the third magnetic field ...

Подробнее
Номер записи: 85
25-07-2019 дата публикации

MEASURING APPARATUS, METHOD, AND STORAGE MEDIUM

Номер: US20190227128A1
Автор: HATA Yoshiyuki
Принадлежит: ADVANTEST CORPORATION

A measuring apparatus that measures a measurement target amount generated from a measurement target, includes an additional amount generating section, a sensor, and a deriving section. The additional amount generating section generates an additional amount to be added to the measurement target amount. The sensor measures a composite amount of the measurement target amount added with the additional amount. The deriving section derives the measurement target amount from an output of the sensor. The additional amount is a pulse. The pulse has an amplitude higher than the absolute value of the maximum of the measurement target amount. The maximum of the pulse is zero. The pulse has a frequency high enough to ignore the f noise. The deriving section detects the output value of the sensor to derive the measurement target amount. 1. A measuring apparatus that measures a measurement target amount generated from a measurement target , the apparatus comprising:an additional amount generating section that generates an additional amount to be added to the measurement target amount;a sensor that measures a composite amount of the measurement target amount added with the additional amount; anda deriving section that derives the measurement target amount from an output of the sensor, wherein{'b': '1', '/f noise is generated during measurement by the sensor,'}the output value of the sensor when the composite amount is less than zero is equal to the output value of the sensor when the composite amount is zero, the pulse has an amplitude higher than the absolute value of the maximum of the measurement target amount,', 'the maximum of the pulse is zero, and', {'b': '1', 'the pulse has a frequency high enough to ignore the /f noise, and'}], 'the additional amount is a pulse, wherein'}the deriving section detects the output value of the sensor to derive the measurement target amount.2. The measuring apparatus according to claim 1 , whereinthe measurement target amount is a magnetic ...

Подробнее
Номер записи: 86
16-07-2020 дата публикации

TARGETS FOR COIL ACTUATED POSITION SENSORS

Номер: US20200225298A1
Автор: Fermon Claude, Latham Alexander, Milesi Alejandro Gabriel, Monreal Gerardo A.
Принадлежит:

Apparatus includes a first portion of conductive material having varying response to a generated magnetic field along a length of the conductive material, wherein the first portion of conductive material produces a varying eddy current and a varying reflected magnetic field, in response to the generated magnetic field. The apparatus further includes one or more reference portions of conductive material having a relatively invariable response to the generated magnetic field, wherein the reference portion of conductive material produces a relatively invariable eddy current and a relatively invariable reflected magnetic field in response to the generated magnetic field. 1. Apparatus comprising:a first portion of conductive material having varying response to a generated magnetic field along a length of the conductive material, wherein the first portion of conductive material produces a varying eddy current and a varying reflected magnetic field, in response to the generated magnetic field; andone or more reference portions of conductive material having a relatively invariable response to the generated magnetic field, wherein the reference portion of conductive material produces a relatively invariable eddy current and a relatively invariable reflected magnetic field in response to the generated magnetic field.2. The apparatus of wherein the first portion of conductive material comprises a varying thickness along a length of the first portion of conductive material.3. The apparatus of wherein the first portion of conductive material comprises a varying distance along a length of the first portion of conductive material claim 1 , wherein the distance varies as function of the length of the first portion of conductive material.4. The apparatus of wherein the first portion of conductive material comprises an inclined plane.5. The apparatus of wherein the inclined plane is a spiral inclined plane.6. The apparatus of further comprising a first magnetic field sensor ...

Подробнее
Номер записи: 87
09-09-2021 дата публикации

Measurement of Body Fluid Retention using Inductive Coupling

Номер: US20210275733A1
Автор: Goldshtein Oren, Hershko Matan
Принадлежит:

An apparatus includes a magnetic-field transducer, and circuitry. The magnetic-field transducer is configured to be coupled externally to a body of a patient. The circuitry is configured to generate and apply to the magnetic-field transducer a time-varying signal, so as to generate a time-varying magnetic field outside the body of the patient, for supplying electrical energy by inductive coupling to an electronic device that is positioned inside the body, to estimate an intensity of the magnetic field that reaches the electronic device, and to assess fluid retention in an organ of the patient based on the estimated intensity of the magnetic field. 1. An apparatus , comprising:a magnetic-field transducer, which is configured to be coupled externally to a body of a patient; and generate and apply to the magnetic-field transducer a time-varying signal, so as to generate a time-varying magnetic field outside the body of the patient, for supplying electrical energy by inductive coupling to an electronic device that is positioned inside the body;', 'estimate an intensity of the magnetic field that reaches the electronic device; and', 'assess fluid retention in an organ of the patient based on the estimated intensity of the magnetic field., 'circuitry, configured to2. The apparatus according to claim 1 , wherein the circuitry is configured to initiate a responsive action upon detecting that the fluid retention is indicative of an abnormality.3. The apparatus according to claim 1 , wherein the organ comprises a lung of the patient.4. The apparatus according to claim 1 , wherein the circuitry is configured to receive claim 1 , from the electronic device claim 1 , data indicative of the intensity of the magnetic field that reaches the electronic device claim 1 , and to estimate the intensity based on the data.5. The apparatus according to claim 4 , wherein the data comprises an indication of whether the intensity of the magnetic field exceeds a predefined threshold.6. The ...

Подробнее
Номер записи: 88
01-08-2019 дата публикации

On-Chip Detection of Spin States in Color Centers for Metrology and Information Processing

Номер: US20190235031A1
Автор: Englund Dirk, FOY Christopher, Han Ruonan, IBRAHIM Mohamed I., Kim Donggyu
Принадлежит:

The Zeeman shift of electronic spins in nitrogen-vacancy (NV) centers in diamond has been exploited in lab-scale instruments for ultra-high-resolution, vector-based magnetic sensing. A quantum magnetometer in CMOS utilizing a diamond-nanocrystal layer with NVs or NV-doped bulk diamond on a chip-integrated system provides vector-based magnetic sensing in a compact package. The system performs two functions for the quantum magnetometry: (1) strong generation and efficient delivery of microwave for quantum-state control and (2) optical filtering/detection of spin-dependent fluorescence for quantum-state readout. The microwave delivery can be accomplished with a loop inductor or array of wires integrated into the chip below the nanodiamond layer or diamond. And the wire array can also suppress excitation light using a combination of plasmonic and (optionally) Talbot effects. 1. An apparatus for measuring an external magnetic field , the apparatus comprising:a semiconductor integrated circuit;a crystal host disposed on the semiconductor integrated circuit and comprising a plurality of color centers;an inductor, formed in at least one layer of the semiconductor integrated circuit, to apply an alternating current (AC) magnetic field to the plurality of color centers; anda photodetector, integrated in the semiconductor integrated circuit in optical communication with the plurality of color centers, to detect fluorescence emitted by the plurality of color centers in response to the external magnetic field.2. The apparatus of claim 1 , wherein the crystal host comprises a diamond and the plurality of color centers comprises a plurality of nitrogen vacancies3. The apparatus of claim 1 , wherein the inductor comprises at least one parasitic disconnected loop to enhance uniformity of the AC magnetic field.4. The apparatus of claim 1 , wherein the inductor comprises a resonant inductor.5. The apparatus of claim 4 , wherein the photodetector is patterned to reduce eddy currents in ...

Подробнее
Номер записи: 89
09-09-2021 дата публикации

METHOD AND APPARATUS FOR TRIAGE OF ELECTRONIC ITEMS USING MAGNETIC FIELD DETECTION

Номер: US20210278482A1
Автор: CORWIN Alan, LYNDE C. MACGILL, PLATT DEREK, SCHOENBERG Ronald, WIKLOF CHRISTOPHER A.
Принадлежит:

An electronic circuit triage device diagnoses functionality of various electronic circuits of an electronic device. The electronic circuit triage device detects whether an electronic circuit is functioning properly by measuring a magnetic field pattern associated with the electronic circuit and comparing the magnetic field pattern to an expected magnetic field pattern. 1. A method , comprising:receiving an electronic device on a test platform of an electronic circuit triage system;measuring a magnetic field pattern from the electronic device;comparing the measured magnetic field pattern to one or more reference magnetic field patterns;determining a condition of the electronic device based on the comparison of the measured magnetic field pattern to the one or more reference magnetic field patterns; andoutputting an indication of the condition to a user.2. The method of claim 1 , further comprising:receiving, into the electronic circuit triage system, a model designation for the electronic device; andfetching the one or more reference magnetic field patterns in accordance with the model designation.3. The method of claim 2 , wherein the model designation identifies a make or model of the electronic device.4. The method of claim 3 , wherein the electronic device is a mobile phone.5. The method of claim 2 , wherein the one or more reference magnetic field patterns include a plurality of reference magnetic field patterns.6. The method of claim 1 , wherein each reference magnetic field pattern corresponds to a nominal condition claim 1 , a condition requiring repair claim 1 , a condition corresponding to disablement of an electronic device subsystem claim 1 , a condition requiring battery charging claim 1 , or a condition indicating battery degradation.7. The method of claim 1 , further comprising:capturing one or more reference images of the electronic device; anddetermining an orientation and a location of the electronic device relative to the test platform;wherein ...

Подробнее
Номер записи: 90
08-09-2016 дата публикации

Magnetic sensor circuit

Номер: US20160259017A1
Автор: Masao Iriguchi
Принадлежит: Ablic Inc

To provide a magnetic sensor circuit which does not output spike-like voltage errors to a signal processing circuit. A magnetic sensor circuit is provided which is configured so as to output an output signal to a signal processing circuit through a plurality of hall elements driven by a first switch circuit and a second switch circuit controlled by a second control circuit and in which the first switch circuit controls timings at which spikes occur in the output signal of each of the hall elements in such a manner that the timings are not the same, and the second switch circuit selects and outputs an output signal having a period of a timing free of the occurrence of a spike.

Подробнее
Номер записи: 91
27-11-2014 дата публикации

SENSOR DEVICE, AND A MAGNET ELEMENT FOR A SENSOR DEVICE

Номер: US20140345408A1
Автор: Peukert Andreas, Pfeifer Ralf
Принадлежит:

A sensor device having at least one sensor element, such as a Hall sensor element, and at least one magnet element that can move in relation to the sensor element. The sensor element has a number of differently magnetized regions. The sensor element is configured to issue a sensor signal, which represents a condition defined by a magnetization of a region of the magnet element located in the measurement range of the sensor element. The sensor element determines the condition by means of one of at least three pre-defined sensor signal values. 1. A sensor device comprising:at least one sensor element, andat least one magnet element that can move in relation to the at least one sensor element, wherein the at least one magnet element includes a plurality of differently magnetized regions,wherein the sensor element is configured to issue a sensor signal that represents a condition determined by a magnetization of a region of the magnet element located in the measurement range of the sensor element,wherein the sensor element determines the condition by means of one of at least three pre-defined sensor signal values.2. The sensor device according to claim 1 , wherein the sensor element is configured to provide a pre-defined sensor signal value as a sensor signal when no magnetic flux acts on the sensor element.3. The sensor device according to claim 1 , wherein the sensor element is configured to provide a sensor signal having a sensor signal value claim 1 , wherein the sensor signal value identifies the orientation of a magnetic field at the region of the magnet element located in the measurement range of the sensor element claim 1 , wherein a strength of the magnetic field at the region of the magnet element located in the measurement range of the sensor element is not identified.4. The sensor device according to claim 1 , wherein the sensor device has at least one additional sensor element claim 1 , wherein the additional sensor element is configured to issue an ...

Подробнее
Номер записи: 92
30-07-2020 дата публикации

Sensor Device

Номер: US20200241083A1
Автор: Franke Jörg
Принадлежит:

A sensor device () is described. The sensor device () comprises a laterally arranged double coil () with a first coil () and a second coil (), wherein first windings () of the first coil () and second windings () of the second coil () are arranged in a spiral shape. The first windings () from a first center point () lead to a common region () and the second windings () from a second center point () lead to the common region () as well. At least one magnetic field sensor () is disposed on the laterally arranged double coil (). 1. A sensor device comprising:a laterally arranged double coil with a first coil and a second coil, wherein first windings of the first coil and second windings of the second coil are arranged in a spiral shape and wherein the first windings lead from a first center point to a common region and the second windings lead from a second center point to the common region; andat least one magnetic field sensor disposed on the laterally arranged double coil.2. The sensor device according to claim 1 , wherein the magnetic field sensor is applied to a chip.3. The sensor device according to claim 1 , wherein the magnetic-field sensor is disposed on the double coil.4. The sensor device according to claim 1 , wherein the first windings of the first coil are executed in a same winding direction as the second windings of the second coil.5. The sensor device according to claim 1 , wherein the magnetic field sensor is located in the common region.6. The sensor device according to claim 1 , wherein the magnetic field sensor is at least one of a Hall sensor claim 1 , a flux gate or an MR sensor.7. The sensor device according to claim 1 , wherein the first center point and the second center point are electrically connected to connectors via bond wires.8. The sensor device according to claim 1 , wherein the first windings of the first coil are executed in the direction contrary to the second windings of the second coil. This application claims priority to and ...

Подробнее
Номер записи: 93
30-07-2020 дата публикации

Packages For Coil Actuated Position Sensors

Номер: US20200241084A1
Автор: Boudreau Jason, Doogue Michael C., Latham Alexander
Принадлежит: Allegro Microsystems, LLC

An apparatus comprises a first substrate and two coils supported by the first substrate and arranged next to each other, the coils configured to each generate a magnetic field which produces eddy currents in and a reflected magnetic field from a conductive target, the two coils arranged so their respectively generated magnetic fields substantially cancel each other in an area between the coils. One or more magnetic field sensing elements are positioned in the area between the coils and configured to detect the reflected magnetic field. 1. Apparatus comprising:one or more substrates;one or more magnetic field sensing elements supported by the one or more substrates to detect an alternating magnetic field; anda conductive support structure to support the one or more substrates, the support structure having a shape in an area adjacent to the magnetic field sensing elements that does not generate a reflected magnetic field in response to the alternating magnetic field.2. The apparatus of further comprising one or more coils claim 1 , wherein at least one of the one or more coils generates the alternating magnetic field.3. The apparatus of wherein at least one of the one or more coils is supported by at least one of the one or more substrates.4. The apparatus of wherein the conductive support structure supports the at least one of the one or more substrates.5. The apparatus of wherein the one or more magnetic field sensing elements are arranged in a grid pattern on the one or more substrates.6. The apparatus of wherein the at one of the one or more coils comprises a plurality of traces and wherein the one or more magnetic field sensing elements are positioned on the substrate in a space between traces of the coil.7. The apparatus of wherein the at least one of the one or more coils includes a counter coil to produce a local magnetic field in a direction opposite to the direction of the alternating magnetic field.8. The apparatus of wherein the at least one of the one or ...

Подробнее
Номер записи: 94
15-08-2019 дата публикации

SYSTEM FOR OBJECT POSITION ESTIMATION BASED ON MAGNETIC FIELD SIGNAL USING UNDERWATER SENSOR NETWORK AND METHOD THEREOF

Номер: US20190250219A1
Автор: Kim Kwang Yul, SHIN Yo An
Принадлежит: Foundation of Soongsil University-Industry Cooperation

A method for object position estimation based on a magnetic field using an underwater sensor network, includes: step of receiving a magnetic field signal that is emitted from an underwater moving object using an underwater sensor network which is configured with a plurality of magnetic field sensors in the water; step of extracting an induced magnetic field signal by removing a geomagnetic field and a noise signal from the received magnetic field signal; step of determining whether or not the moving object enters the underwater sensor network using the induced magnetic field signal; and step of estimating a position of the object using position information of the plurality of sensors that sense the object if it is determined that the object enters the underwater sensor network. 1. A method for object position estimation based on a magnetic field using an underwater sensor network , comprising:step of receiving a magnetic field signal that is emitted from an underwater moving object using an underwater sensor network which is configured with a plurality of magnetic field sensors in the water;step of extracting an induced magnetic field signal by removing a geomagnetic field and a noise signal from the received magnetic field signal;step of determining whether or not the moving object enters the underwater sensor network using the induced magnetic field signal; andstep of estimating a position of the object using position information of the plurality of sensors that sense the object if it is determined that the object enters the underwater sensor network.2. The method for object position estimation based on a magnetic field according to claim 1 ,wherein, in the step of estimating the induced magnetic field signal, the induced magnetic field signal is extracted by removing the geomagnetic field and the noise signal using a single exponential smoothing (SES) algorithm or a double exponential smoothing (DES) algorithm.4. The method for object position estimation based on ...

Подробнее
Номер записи: 95
15-08-2019 дата публикации

Packages For Coil Actuated Position Sensors

Номер: US20190250220A1
Автор: Boudreau Jason, Doogue Michael C., Latham Alexander
Принадлежит: Allegro Microsystems, LLC

An apparatus comprises a first substrate and two coils supported by the first substrate and arranged next to each other, the coils configured to each generate a magnetic field which produces eddy currents in and a reflected magnetic field from a conductive target, the two coils arranged so their respectively generated magnetic fields substantially cancel each other in an area between the coils. One or more magnetic field sensing elements are positioned in the area between the coils and configured to detect the reflected magnetic field. 1. An apparatus comprising:a first substrate;two coils supported by the first substrate and arranged next to each other, the coils configured to each generate a magnetic field which produces eddy currents in and a reflected magnetic field from a conductive target, the two coils arranged so their respectively generated magnetic fields substantially cancel each other in an area between the coils; andone or more magnetic field sensing elements positioned in the area between the coils and configured to detect the reflected magnetic field.2. The apparatus of wherein the one or more magnetic field sensing elements comprise a bridge circuit.3. The apparatus of wherein the one or more magnetic field sensing elements comprise at least two pairs of magnetic field sensing elements.4. The apparatus of wherein a center area of the conductive target is adjacent to one of the pairs of magnetic field sensing elements and an edge of the conductive target is adjacent to another of the pairs of magnetic field sensing elements.5. The apparatus of further comprising a second substrate claim 1 , wherein the one or more magnetic field sensing elements and/or a processing circuit are supported by the second substrate.6. The apparatus of wherein the second substrate is centered in the area between the coils.7. The apparatus of wherein the first and/or second substrates comprise one or more of: a semiconductor material claim 5 , a glass material claim 5 , or a ...

Подробнее
Номер записи: 96
15-08-2019 дата публикации

Magnetic Field Sensor Having at Least Two CVH Elements and Method of Operating Same

Номер: US20190250222A1
Автор: Foletto Andrea, Friedrich Andreas P., Yoakim Nicolas
Принадлежит: Allegro Microsystems, LLC

A magnetic field sensor for sensing a direction of a magnetic field in an x-y plane, can include a first plurality of magnetic field sensing elements operable to generate a first plurality of magnetic field signals and a second plurality of magnetic field sensing elements operable to generate a second plurality of magnetic field signals. The magnetic field sensor can also include at least one sequence switches circuit operable to select ones of the first plurality of magnetic field signals and to select ones of the second plurality of magnetic field signals. The magnetic field sensor can also include a processing circuit operable to combine the selected ones of the first plurality of magnetic field signals and the selected ones of the second plurality of magnetic field signals to generate at least one sequential signal and to process the at least one sequential signal to generate an x-y angle signal indicative of a direction of the magnetic field in the x-y direction. An associated method is described. 1. A magnetic field sensor for sensing a direction of a magnetic field in an x-y plane , the magnetic field sensor comprising:a first plurality of magnetic field sensing elements operable to generate a first plurality of magnetic field signals, the first plurality of magnetic field sensing elements having a respective first plurality of maximum response axes aligned in a respective first plurality of different directions in the x-y plane;a second plurality of magnetic field sensing elements operable to generate a second plurality of magnetic field signals different than the first plurality of magnetic field signals, the second plurality of magnetic field sensing elements having a respective second plurality of maximum response axes aligned in a respective second plurality of directions in the x-y plane, wherein the first plurality of directions and the second plurality of directions comprise the same plurality of directions or different pluralities of directions;at ...

Подробнее
Номер записи: 97
06-08-2020 дата публикации

Near magnetic field variation detection system and detection method thereof

Номер: US20200249285A1
Автор: Chien-Chih Chen
Принадлежит: National Central University

A near magnetic field variation detection method comprises following steps of: measuring magnetic field by a first magnetic field sensor and a second magnetic field sensor respectively; and calculating a magnetic field measurement difference, wherein the magnetic field measurement difference is (1) a magnitude of a difference of a first-magnetic-field-measurement measured by the first magnetic field sensor and a second-magnetic-field-measurement measured by the second magnetic field sensor, or (2) a magnitude of a difference of a first-magnetic-field-measurement-component measured by the first magnetic field sensor along a characteristic direction and a second-magnetic-field-measurement-component measured by the second magnetic field sensor along the characteristic direction; wherein a near magnetic field variation is occurred when (a) the magnetic field measurement difference is continuously greater than a characteristic-threshold within a characteristic-time-period, or (b) an average value of the magnetic field measurement difference is greater than a characteristic-average-threshold within a characteristic-average-time-period.

Подробнее
Номер записи: 98
21-10-2021 дата публикации

Biomagnetic field sensor systems and methods for diagnostic evaluation of cardiac conditions

Номер: US20210325482A1
Автор: Benjamin Donaldson MOORE, Emmanuel T. SETEGN, Peeyush Shrivastava, Raj MUCHHALA, Rhea MALHOTRA, Vineet Naveen ERASALA
Принадлежит: Genetesis Inc

The present disclosure provides a biomagnetic field sensor system for diagnostic evaluation of a cardiac condition of an individual. The biomagnetic field sensor system may comprise an array of biomagnetic field sensors configured to sense an electromagnetic field associated with a heart of the individual and generate electromagnetic field data therefrom; a computer processor coupled to the array of biomagnetic field sensors; a memory configured to store the electromagnetic field data generated by the array of biomagnetic field sensors; and a non-transitory computer-readable medium encoded with a computer program including instructions that, when executed by the computer processor, cause the computer processor to receive the electromagnetic field data, and generate a diagnostic evaluation of a cardiac condition of the individual based at least in part on an analysis of the electromagnetic field data.

Подробнее
Номер записи: 99
01-10-2015 дата публикации

SENSOR DEVICE

Номер: US20150276893A1
Автор: Franke Joerg, Kaufmann Timo, RING Andreas
Принадлежит: Micronas GmbH

A sensor device for suppressing a magnetic stray field, having a semiconductor body, a first pixel cell and a second pixel cell integrated into a surface of the semiconductor body together with a circuit arrangement. Each pixel cell has a first magnetic field sensor and a second magnetic field sensor to detect a magnetic field in the x-direction and a magnetic field in the y-direction. The first pixel cell is spaced apart from the second pixel cell along a connecting line, and the substrate and the semiconductor body are disposed in the same IC package. A magnet is provided that has a planar main extension surface in the direction of an x-y plane and has a magnetization with four magnetic poles in the direction of the x-y plane. The IC package is spaced apart from the main extension surface of the magnet in the z-direction and at least partially within a ring magnet. 1. A sensor device for suppressing a magnetic stray field , the sensor device comprising:a semiconductor body with a surface formed in an x-y plane and a back surface, the x-direction and the y-direction being formed orthogonal to one another, the semiconductor body being arranged on a substrate, the substrate and the semiconductor body being disposed in an IC package;a first pixel cell and a second pixel cell, the first and second pixel cells being formed in the surface of the semiconductor body together with a circuit arrangement, each of the first and second pixel cells having a first magnetic field sensor and a second magnetic field sensor, the first magnetic field sensor detecting a magnetic field in the x-direction and the second magnetic field sensor detecting a magnetic field in the y-direction, the first pixel cell being spaced apart from the second pixel cell along a connecting line; andan axis formed in a z-direction, the z-direction being configured orthogonal to the x-y plane; anda magnet having a planar main extension surface in the direction of the x-y plane and having a magnetization ...

Подробнее
Номер записи: 100