Magnetometers Patents (Class 324/244)
  • Patent number: 10809312
    Abstract: A first decision unit of an AC leakage detection section outputs a first output signal with a signal level depending on the level of a corrected first voltage signal output from a correction unit relative to a first threshold value. An excitation unit of a DC leakage detection section applies, to an excitation coil, an excitation voltage having an excitation frequency. A DC component detection unit outputs a second voltage signal representing magnitude of a DC component of the voltage obtained by a current-detecting resistor. A second decision unit outputs a second output signal having a voltage level depending on the level of the second voltage signal relative to a second threshold value. The DC leakage detection section includes a low-pass filter provided between an input terminal electrically connected to a connection point between the excitation coil and the current-detecting resistor and the excitation coil.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 20, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tsuyoshi Ikushima, Tomokazu Nishigaki, Naoki Fukuo
  • Patent number: 10802086
    Abstract: A circuit includes a Superconducting Quantum Interference Array (SQIF), a bias circuit, and a coil. The SQIF generates an output voltage that is a transfer function of the magnetic flux perpendicularly passing through the SQIF. An external magnetic field and a bias magnetic field supply the magnetic flux. The bias circuit generates a bias current for biasing the SQIF at an operating point. The coil generates the bias magnetic field through the SQIF from the bias current of the bias circuit. The bias magnetic field provides nullifying feedback to the SQIF that counterbalances a low-frequency portion of the external magnetic field, such that the output voltage of the SQIF detects a high-frequency portion of the external magnetic field. The circuit can be a receiver with the output voltage of the SQIF detecting an electromagnetic signal while the receiver is moving with changing orientation relative to the Earth's magnetic field.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: October 13, 2020
    Assignee: United States of America as Represented by the Secretary of the Navy
    Inventors: Eric C. Fisher, Marcio C. de Andrade, Michael O'Brien
  • Patent number: 10792106
    Abstract: A system for calibrating an electromagnetic navigation system is provided. The system includes an antenna assembly having a substrate, multiple pairs of transmit coils, multiple receive coils, multiple input terminals, and multiple output terminals. The substrate includes multiple layers, and each of the transmit coils is deposited on a respective one of the layers and each of the receive coils is deposited on another respective one of the layers. Each of the pairs of transmit coils corresponds to a respective one of the receive coils. Each of the transmit coils is coupled to a respective one of the input terminals, and each of the receive coils is coupled to a respective one of the output terminals.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: October 6, 2020
    Assignee: COVIDIEN LP
    Inventors: Sean M. Morgan, Lev A. Koyrakh
  • Patent number: 10782362
    Abstract: Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 22, 2020
    Assignee: TDK CORPORATION
    Inventors: Masaki Nagata, Kazuya Watanabe, Keisuke Uchida, Kohei Honma, Hiraku Hirabayashi
  • Patent number: 10778047
    Abstract: A wireless energy transfer system includes a foreign object debris detection system. The system includes at least one wireless energy transfer source configured to generate an oscillating magnetic field. The foreign object debris may be detected by at least one field gradiometer positioned in the oscillating magnetic field. The voltage of the at least one field gradiometer may be measured using readout circuitry and a feedback loop based on the readings from the gradiometers may be used to control the parameters of the wireless energy source.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: September 15, 2020
    Assignee: WiTricity Corporation
    Inventors: Simon Verghese, Morris P. Kesler, Katherine L. Hall, Herbert T. Lou
  • Patent number: 10775450
    Abstract: This disclosure relates to the field of zero-field paramagnetic resonance magnetometer (ZF-PRM). A sensitive ZF-PRM capable of measuring magnetic field in three orthogonal directions simultaneously and method of measuring magnetic field in three orthogonal directions is described. The ZF-PRM provides three independent output signals proportional to the three orthogonal vector components of the magnetic field using a single vapor cell, thus reducing complexity and cost of the magnetometer. Because all three magnetic components are measured at substantially the same location at the same time, the accuracy of data is greatly increased.
    Type: Grant
    Filed: March 28, 2020
    Date of Patent: September 15, 2020
    Assignee: Quspin, Inc.
    Inventors: Vishal Shah, Cody Doyle, James Osborne
  • Patent number: 10772531
    Abstract: Aspects of the present disclosure are directed to systems, apparatuses, and methods for detecting and correcting for magnetic field distortions within a magnetic field used for medical magnetic localization systems.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 15, 2020
    Assignee: St. Jude Medical International Holding S.á r.l.
    Inventors: Eitan Oren, Alon Izmirli, Adam Fischbach, Charles B. Byrd, Eric Betzler, Scott Meyerson, Guy Hevel, Adrian Herscovici, Roie Shlomovitz, Shay Levi, Nir Ben Dor
  • Patent number: 10768144
    Abstract: To provide a surface characteristics evaluation apparatus and a surface characteristics evaluation method that evaluate the residual stress in a steel material subjected to a surface modification treatment by considering the distribution thereof in the depth direction. The surface characteristics evaluation apparatus includes an oscillator, a detector, and a measuring instrument. The steel material is placed to abut against or close to a coil in the detector. The oscillator applies an alternating current to the coil, and computation is performed based on a signal indicating an electric characteristic of the coil. The residual stress in the steel material is evaluated by performing this operation while successively changing the frequency of the alternating current. The coil is configured to have a self-resonant frequency higher than the operating frequency.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: September 8, 2020
    Assignee: SINTOKOGIO, LTD.
    Inventor: Yoshiyasu Makino
  • Patent number: 10753968
    Abstract: Methods and apparatus for an integrated circuit having first and second domains with an insulative material electrically isolating the first and second domains. A conductive shield is disposed between the first and second domains and a current sensor has at least one magnetoresistive element proximate the shield to detect current flow in the shield due to breakdown of the insulative material.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: August 25, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Robert A. Briano, William P. Taylor
  • Patent number: 10739385
    Abstract: A magnetic permeable member and a current detection device which can detect current in a wide range by a magnetic field detection element at low cost are provided. A magnetic permeable member includes a closed portion and an opened portion. Thus, when the large current flows through a bus bar, the magnetic field is less likely to be strong at the opened portion, thus the large current is easily detectable by a magnetic field detection element arranged at the opened portion. When the small current flows through the bus bar, the magnetic field is more likely to be strong at the closed portion, thus the small current is easily detectable by a magnetic field detection element arranged at the closed portion. Consequently, the magnetic field detection elements can be commonalized to reduce the cost, while allowing the detection of the current in a wide range.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: August 11, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Toshiaki Fukuhara, Makoto Sei
  • Patent number: 10725135
    Abstract: A method of inducing spin polarization in an analyte is provided. The method exposes 14N spin defect centers embedded within 25 nm of a diamond surface to a magnetic field while an analyte is near the surface. The 14N spin defect centers are polarized by treatment with an electromagnetic wave protocol having a visible light pulse (p0); a microwave pulse (mw1), a radio frequency pulse (rf1), a microwave pulse (mw2) and a radio frequency pulse (rf2) resulting in polarization of the nuclear spins of the 14N spin defect centers. Polarized spins in the 14N spin defect centers induce spin polarization in the analyte.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: July 28, 2020
    Assignee: Research Foundation of the City University of New York
    Inventors: Carlos A. Meriles, Daniela Pagliero, Abdelghani Laraoui
  • Patent number: 10713947
    Abstract: A parking inventory management system includes a sensor apparatus with at least one magnetometer configured to generate a magnetic signature of a vehicle as it drives across the sensor apparatus. A computing device performs an analysis of the magnetic signature of the vehicle as received from the at least one magnetometer, the analysis including at least comparing the magnetic signature of the vehicle as received from the at least one magnetometer to known magnetic signatures of known vehicles. The computing device performs the analysis of the magnetic signature of the vehicle by comparing the magnetic signature of the vehicle to each of the known magnetic signatures of known vehicles to thereby determine a direction of travel of the vehicle based upon the comparison.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: July 14, 2020
    Assignee: The Parking Genius, Inc.
    Inventor: Sean O'Callaghan
  • Patent number: 10705158
    Abstract: A MEMS triaxial magnetic sensor device includes a sensing structure having: a substrate; an outer frame, which internally defines a window and is elastically coupled to first anchorages fixed with respect to the substrate by first elastic elements; a mobile structure arranged in the window, suspended above the substrate, which is elastically coupled to the outer frame by second elastic elements and carries a conductive path for flow of an electric current; and an elastic arrangement operatively coupled to the mobile structure. The mobile structure performs, due to the first and second elastic elements and the arrangement of elastic elements, first, second, and third sensing movements in response to Lorentz forces from first, second, and third magnetic-field components, respectively. The first, second, and third sensing movements are distinct and decoupled from one another.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: July 7, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Giacomo Laghi, Giacomo Langfelder, Gabriele Gattere, Alessandro Tocchio, Dario Paci
  • Patent number: 10697751
    Abstract: 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.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 30, 2020
    Assignee: Segway, Inc.
    Inventors: Joseph A. Hoell, Jr., James B. Carter
  • Patent number: 10691245
    Abstract: A touch sensor includes: a plurality of electrodes; and a plurality of sensing wires connected with the respective electrodes, and formed by extending in a first direction, wherein at least one of the electrodes includes a resistance element which has a shape that is at least partially bent in a unit electrode region and has a resistance value that is changed to correspond to a pressure of a touch. A touch location and pressure can be sensed with the same elements, so that the touch sensor may have increased function yet remain thin.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: June 23, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Soo Kim, Mu Gyeom Kim, Won Ki Hong
  • Patent number: 10690701
    Abstract: A coreless current probe has a body defining an opening. A conductor carrying a current to be measured can be accommodated in the opening. At least three coreless single point magnetic field sensors are distributed in or on the body around the opening. The sensors are arranged so that the sum of the outputs each with appropriate weighting is zero in any homogenous field and with no enclosed current. The sensors outputs have differing weightings so as to maximize rejection by the probe of external magnetic fields.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: June 23, 2020
    Assignee: GMW ASSOCIATES INCORPORATED
    Inventors: Ian James Walker, Karron Louis Law
  • Patent number: 10672266
    Abstract: A system and method are disclosed for using magnetic signatures at predetermined positions along a roadway to monitor traffic travelling along the roadway by comparing the predetermined magnetic signatures with magnetic signatures being dynamically and continuously measured by each vehicle as they travel along the roadway. Magnetometers incorporated into mobile devices or otherwise incorporated within the vehicle measure magnetic signatures for comparison to the predetermined magnetic signatures that form a connection graph or database of points that correspond to possible paths along a roadway. When a magnetic signature match is made, the system recognizes that the vehicle has passed a particular point on a roadway and forwards that information to the appropriate entity for further processing, analysis, or toll assessment.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 2, 2020
    Assignee: TollSense, LLC
    Inventors: Alex Baranga, Chris Georgieff
  • Patent number: 10641843
    Abstract: The invention relates to a circuit or microchip for the detection of poor sources of (or very weak) electrical and/or magnetic fields. In one embodiment a device of the present invention includes a microchip consisting of a plate with a plurality of cells, each cell includes a crystal suspended in a semiconducting polymer and piece of metal wire. The cell is insulated by another polymer. A voltage is applied to parallel wires running on each side of the cell, thus inducing a first (or static, or initial) voltage when measured from the cell to the wire. Changes in magnetic or electrical fields are detected by noting a change in voltage from the cell, which is caused by the crystal changing orientation due to the change in the field the circuit is subjected to.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: May 5, 2020
    Assignee: BIOMIMETICS TECHNOLOGIES, INC.
    Inventors: Meir Israelowitz, Herbert Peter von Schroeder, Syed Rizvi, Chris Holm, Christoph Gille
  • Patent number: 10638952
    Abstract: Systems, methods, and computer-readable media for calibrating an electromagnetic navigation system are provided. A signal having a first magnitude value and a first phase value is received by way of a receiving antenna. A non-calibrated in-phase component and a non-calibrated quadrature component are computed based on the first magnitude value and the first phase value. A calibrated phase value is computed based on the non-calibrated in-phase component and the non-calibrated quadrature component, and a calibrated in-phase component is computed based on the calibrated phase value, the non-calibrated in-phase component, and the non-calibrated quadrature component. A calibrated quadrature component is computed based on the calibrated phase value, the non-calibrated in-phase component, and the non-calibrated quadrature component, and a calibrated magnitude value is computed based on the calibrated in-phase component.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 5, 2020
    Assignee: COVIDIEN LP
    Inventors: Sean M. Morgan, Lev A. Koyrakh
  • Patent number: 10634703
    Abstract: A current sensor includes a main current path in which a main current flows, an auxiliary current path in which an auxiliary current flows, a magnetic detection element detecting intensity of a magnetic field in a magnetic detection direction and disposed around a detection target portion which is a part of the auxiliary current path, and a magnetic shield member disposed to surround the detection target portion and the magnetic detection element. The current sensor is configured to measure a magnitude of the auxiliary current flowing through the detection target portion based on the intensity of the magnetic field detected by the magnetic detection element. The auxiliary current path branches from the main current path and has a smaller cross-sectional area than that of the main current path.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: April 28, 2020
    Assignee: YAZAKI CORPORATION
    Inventor: Yasunori Kawaguchi
  • Patent number: 10634635
    Abstract: A dielectric constant microscope to observe a shape of a micro organic specimen includes first and second insulating films that are disposed to oppose each other such that the organic specimen along with the solution is interposed therebetween, and application-side conductive films P1 to Pn (where n is an integer greater than 1). The application-side conductive films are separated from each other on an outward surface of the first insulating film. Additionally, the dielectric constant microscope includes measurement-side conductive films p1 to pm (where m is an integer greater than 1) that are separated from each other on an outward surface of the second insulating film.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 28, 2020
    Inventor: Toshihiko Ogura
  • Patent number: 10629619
    Abstract: Provided is a semiconductor integrated circuit that improves insulation reliability between a high-voltage circuit and a low-voltage circuit. The semiconductor integrated circuit includes the following: a first circuit controlled by a control signal of low voltage and driven at a higher voltage; a second circuit configured to output the control signal to the first circuit to control the driving of the first circuit; and an insulation circuit including insulating elements connected to each other in series, the insulation circuit connecting between the first and the second circuits in series. The insulation circuit is configured to magnetically or capacitively couple the control signal in each insulating element to transmit the control signal from the second circuit to the first circuit, and is configured to insulate the first circuit from the second circuit in each insulating element to prevent the higher voltage from being applied between the first and second circuits.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 21, 2020
    Assignee: Mitsubishi Electric Corproation
    Inventor: Motoki Imanishi
  • Patent number: 10620330
    Abstract: Translational data acquired by at least one seismic sensor is received. Gradient sensor data acquired by at least one gradient sensor is received. Estimated translational data at a position away from at least one position of the at least one seismic sensor is computed, where the computing is based on the gradient sensor data and the translational data.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: April 14, 2020
    Assignee: WesternGeco L.L.C.
    Inventors: Pascal Edme, Everhard Johan Muijzert
  • Patent number: 10620276
    Abstract: A magnetic detection device that is reduced in size and thickness, but also accurate, includes a substrate and an element disposed on the substrate and including a magneto-sensitive wire sensing an external magnetic field component in an extending direction and a detection coil looping around the magneto-sensitive wire. The magnetic detection device further includes a magnetic field deflector deflecting an external magnetic field around the magneto-sensitive wire, and having a nonmagnetic material core part and a soft magnetic material shell part covering an outer side of at least part of the core part. The magnetic field deflector has a hollow, rather than solid, structure of soft magnetic material. The soft magnetic material volume is therefore significantly smaller, and the hysteresis caused in the magnetic field deflector is remarkably reduced. With the magnetic detection device, the magnetic field component orthogonal to the substrate is also detected with higher accuracy.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: April 14, 2020
    Assignee: AICHI STEEL CORPORATION
    Inventors: Takashi Shimoto, Jun Nakamura, Ryusuke Yamashita, Tomohiko Nagao, Michiharu Yamamoto
  • Patent number: 10591890
    Abstract: A localization device using a magnetic field for positioning a moving object is provided. The localization device includes a magnetic landmark, a set of at least four tri-axes magnetic sensors mounted on the moving object, and a logic operation processing unit. The set of at least four tri-axes magnetic sensors forms four non-coplanar points in a three-dimension coordinate system. The logic operation processing unit is connected to the set of at least four tri-axes magnetic sensors. The set of at least four tri-axes magnetic sensors senses the magnetic field of the magnetic landmark and generates at least four magnetic signals transmitted to the logic operation processing unit.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: March 17, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kuan-Chun Sun, Sheng-Wen Lo
  • Patent number: 10565332
    Abstract: In an approach for providing simulation results of an interaction between a transducer head and a magnetic medium, a computer identifies a first raster scan of a sample via a scanning probe microscope. The computer generates a topography image based on the first raster scan of the sample. The computer identifies one or more reference features within the created topography image. The computer calculates an average height based on the one or more reference features. The computer determines a lift distance associated with a probe of the scanning probe microscope. The computer defines a uniform plane based on the calculated average height and the determined lift distance. The computer performs a second raster scan of the sample based on the defined uniform plane. The computer generates a fly-height image based on the second raster scan. The computer provides simulation results based at least in part on the second raster scan.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: February 18, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ho-Yiu Lam, Jason Liang
  • Patent number: 10539701
    Abstract: A minute magnetic body detecting sensor includes: a magnetic impedance element, with two magneto-sensitive bodies disposed in substantially two-dimensional directions such that an angle formed by respective sensitive axes is substantially 90 degrees; and a signal processing device, including a signal processing circuit, processing and amplifying damped oscillating voltages output by the two magneto-sensitive bodies that detected a local magnetic field due to a minute magnetic body that is a foreign substance, two square operating elements, squaring output signals, an adder, adding the squared signals, and a square root operating element, performing square root computation on the addition output and outputting a square root output, and enables high-precision detection of existence or non-existence of a minute magnetic body without detection overlooking.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: January 21, 2020
    Assignee: AICHI STEEL CORPORATION
    Inventors: Takeshi Kawano, Hideo Arakawa, Michiharu Yamamoto, Hitoshi Aoyama, Kazuo Urakawa
  • Patent number: 10527683
    Abstract: A magnetic sensor device comprises a magnetic sensor chip that has a substantially rectangular shape and that contains a magnetic sensor element; and a sealing body, which is composed of a resin material containing magnetic particles and that integrally seals the chip. The chip includes a first and second side surfaces which are mutually opposite to each other, and a third and fourth side surfaces which are mutually opposite to each other and orthogonal to the first and second side surfaces. The sealing body contains first to forth sealing parts. The thicknesses of the first and second sealing parts are smaller than the particle diameter of the particles, and the thickness of at least the third sealing part is larger than the particle diameter of the particles. The particles exist in at least the third sealing part and substantially do not exist in the first and second sealing parts.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: January 7, 2020
    Assignee: TDK Corporation
    Inventors: Kunihiro Ueda, Koichi Otani, Hiraku Hirabayashi, Shuhei Miyazaki
  • Patent number: 10509081
    Abstract: A magneto-sensitive wire for a magnetic impedance sensor and a method of manufacturing the same are provided which can prevent generation of abnormal noise in an output voltage and deterioration in hysteresis characteristics and enable higher-accuracy measurement than conventional magneto-sensitive wires. The magneto-sensitive wire (1) comprises an amorphous wire for detecting magnetism. The magnetic impedance sensor (6) has the magneto-sensitive wire (1) and a detection coil (3) around the magneto-sensitive wire (1). The magnetic impedance sensor (6) is configured to apply a pulse current to the magneto-sensitive wire (1) and detect a voltage generated in the detection coil (3) thereby capable of measuring strength of a magnetic field. The voltage has magnitude in response to strength of an external magnetic field. The magneto-sensitive wire (1) is a Co-based amorphous wire manufactured using an in-rotating liquid spinning method and finished by wire drawing.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: December 17, 2019
    Assignee: AICHI STEEL CORPORATION
    Inventors: Norihiko Hamada, Akihiro Shimode, Michiharu Yamamoto
  • Patent number: 10504957
    Abstract: A semiconductor device includes a semiconductor substrate having a plurality of Hall elements formed therein, and a magnetic body formed on the semiconductor substrate and having a magnetic flux converging function. The contour in a vertical cross section of the magnetic body on the semiconductor substrate has an outer circumferential portion. At least a part of the outer circumferential portion has a curve-shaped portion and a portion substantially parallel to the semiconductor substrate. A gap is formed between the semiconductor substrate and the portion of the magnetic body that is substantially parallel to the semiconductor substrate, and the gap lies above the entire top surfaces of the Hall elements. The magnetic body has at least a part of a structure made of non-magnetic substance embedded therein.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: December 10, 2019
    Assignee: ABLIC Inc.
    Inventors: Matsuo Kishi, Miei Takahama (nee Sato), Hiroshi Takahashi, Mika Ebihara, Takaaki Hioka
  • Patent number: 10481217
    Abstract: A magnetic field sensor includes a magnetic detection element that includes a magnetic material causing a magnetic impedance effect and a bias coil applying a bias magnetic field to the magnetic material, a high-frequency oscillation circuit that supplies a high-frequency current to the magnetic material, an AC bias circuit that supplies an AC bias current to the bias coil, and a detection circuit that sets a reference point corresponding to an extreme impedance position in a characteristic of the magnetic detection element in the state of no application of an external magnetic field and outputs an electric signal changing in response to an impedance change amount from the reference point. The detection circuit includes an amplitude detection circuit which detects an amplitude of the electric signal at a timing of each vertex in which at least a voltage change direction of the electric signal changes.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: November 19, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Junya Tanigawa, Hiroki Sugiyama, Makoto Ishii
  • Patent number: 10446987
    Abstract: A connector device includes: a connection terminal including a first terminal connection portion electrically connected to a first counterpart terminal, a second terminal connection portion electrically connected to a second counterpart terminal, and a coupling portion having a flat plate shape, disposed between the first terminal connection portion and the second terminal connection portion electrically connected between the first terminal connection portion and the second terminal connection portion; a current sensor configured to measure current flowing in the coupling portion on the basis of magnetic flux according to the current; and a casing including a first housing portion housing the second terminal connection portion, and a second housing portion housing the coupling portion and the current sensor.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 15, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Toshiaki Fukuhara, Fuminori Sugiyama, Yuki Mori, Kouzou Koshou
  • Patent number: 10411415
    Abstract: A connector device includes: a connection terminal including a first terminal connection portion electrically connected to a first counterpart terminal, a second terminal connection portion electrically connected to a second counterpart terminal, and a coupling portion having a flat plate shape, disposed between the first terminal connection portion and the second terminal connection portion electrically connected between the first terminal connection portion and the second terminal connection portion; a current sensor configured to measure current flowing in the coupling portion on the basis of magnetic flux according to the current; and a casing including a first housing portion housing the second terminal connection portion, and a second housing portion housing the coupling portion and the current sensor.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 10, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Toshiaki Fukuhara, Fuminori Sugiyama, Yuki Mori, Kouzou Koshou
  • Patent number: 10401138
    Abstract: Systems and techniques are provided for guided installation feedback for an opening sensor. Detected magnetic field strengths of a magnetic field created by a magnet of an opening sensor as detected by a magnetometer sensor of the opening sensor may be received over a time period. It may be determined that there has been a change in the strength of the magnetic field created by the magnet as detected by the magnetometer sensor based on the received detected magnetic field strengths. Accelerometer data from an accelerometer disposed in the magnetometer sensor may be received. It may be determined from the accelerometer data that the magnetometer sensor was not moving and positive feedback may be provided to an installer of the opening sensor, or it may be determined from the accelerometer data that the magnetometer sensor was moving and negative feedback may be provided to the installer of the opening sensor.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 3, 2019
    Assignee: GOOGLE LLC
    Inventors: Yash Modi, Kenneth Louis Herman, Kristoffer John Donhowe, Lawrence Au, Kevin Charles Peterson
  • Patent number: 10398341
    Abstract: The gradiometers of the present invention are developed by applying GSR sensors to have the detectability of magnetic field same to that of SQUID without a cryogenic temperature retainer. Plural GSR elements are fitted on two parallel convex line guides of the gradiometer board using two parallel concave line guides of the GSR element board to keep the parallel among wires direction of GSR elements perfectly and to cancel the outside magnetic field noise without a magnetic shield room.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: September 3, 2019
    Assignee: MAGNEDESIGN CORPORATION
    Inventor: Yoshinobu Honkura
  • Patent number: 10371761
    Abstract: A low profile magnetoresistive imaging sensor array based on the principle of magnetic induction, which reduces a distance between a medium imaging sensor array and a medium by optimizing the arrangement of an application integrated circuit and a sensing element array and using an electric connection technology which can reduce the distance between the medium imaging sensor array and the medium, thereby increasing the resolution of the existing medium imaging sensor. The low profile magnetoresistive imaging sensor array includes a sensing element array and an application integrated circuit, and also includes a circuit which provides a power for the sensing element array, a magnetoresistive sensing element array selection circuit, a signal amplification circuit, a digitizer, a memory circuit, and a microprocessor. Additionally, the sensing element array includes at least one magnetoresistive sensing element.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: August 6, 2019
    Assignee: MultiDimension Technology Co., Ltd.
    Inventors: Mark C. Tondra, Songsheng Xue, James Geza Deak, Insik Jin, Weifeng Shen
  • Patent number: 10361147
    Abstract: A power module has upper and lower transistor dies carried by a lead frame assembly. The assembly has a positive DC paddle for the upper die and an AC paddle for the lower die. An upper plate interconnects a second side of the upper die with the AC paddle, and a lower plate interconnects a second side of the lower die with a negative power bar. Current flowing via positive and negative power bars defines a power loop creating a main magnetic flux with a first direction in a central region and a return direction outside the central region. The upper and lower plates have outer edges having respective notches to concentrate respective portions of a return magnetic flux. Each die has a gate pad connected in a gate loop, wherein the gate loops each overlap a respective concentrated return flux thereby enhancing a common source inductance for each transistor.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: July 23, 2019
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Zhuxian Xu, Nevin Altunyurt, Chingchi Chen
  • Patent number: 10325497
    Abstract: A parking inventory management system includes a sensor apparatus with at least one magnetometer configured to generate a magnetic signature of a vehicle as it drives across the sensor apparatus. A computing device performs an analysis of the magnetic signature of the vehicle as received from the at least one magnetometer, the analysis including at least comparing the magnetic signature of the vehicle as received from the at least one magnetometer to known magnetic signatures of known vehicles. The computing device performs the analysis of the magnetic signature of the vehicle by comparing the magnetic signature of the vehicle to each of the known magnetic signatures of known vehicles to thereby determine a direction of travel of the vehicle based upon the comparison.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 18, 2019
    Assignee: The Parking Genius, Inc.
    Inventor: Sean O'Callaghan
  • Patent number: 10317399
    Abstract: According to one embodiment, a sample analyzer includes a detector, a first generator and a second generator. The detector detects a target substance bonded to a magnetic particle collected to a sensing area in the cartridge. The first generator applies a magnetic field for releasing the magnetic particles from the sensing area. The second generator includes a permanent magnet configured to generate a magnetic field for attracting the magnetic particles to the sensing area, a first soft magnetic material, and a second magnetic material. The second generator switches application and shut-off of a magnetic field by moving the permanent magnet relative to the first soft magnetic material and the second soft magnetic material.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 11, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Naru Ikeda, Motoji Haragashira, Shoichi Kanayama
  • Patent number: 10295617
    Abstract: A distribution analyzing device (20) includes: an obtaining unit (21) which obtains measurement data of a field measured, through a sensor sensing area, independently at each of rotation angles and at each of grid coordinate positions of the sensor sensing area; and a calculation unit (22) which calculates a distribution of the field from the measurement data, using an arithmetic expression obtained by deriving a target harmonic function, which indicates the distribution of the field, using a condition that a convolution of the target harmonic function and a shape function, which indicates a shape of a cross section of the finite sensor sensing area along a plane parallel to the measurement plane, is equal to a provisional harmonic function derived by solving the Laplace equation using the measurement data and a size of the sensor sensing area in a direction perpendicular to the measurement plane.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: May 21, 2019
    Inventor: Kenjiro Kimura
  • Patent number: 10274549
    Abstract: An atomic magnetometer includes a vapor cell, one or more pumping lasers, a probe laser, and a sensor. The one or more pumping lasers are disposed to direct one or more laser beams though the vapor cell to interact with atoms of an atomic vapor in the vapor cell. The atomic vapor periodically absorbs light of alternating circular polarization from the one or more laser beams. The probe laser is disposed to direct polarized light to pass through the vapor cell. The sensor is disposed to intersect the polarized light from the probe laser after passing through the vapor cell.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 30, 2019
    Assignee: AOSense, Inc.
    Inventors: Micah Ledbetter, Brian Patton
  • Patent number: 10267657
    Abstract: A method for automatic calibration of a camshaft sensor for a motor vehicle, allowing reduction of the fluctuations on the output signal of the sensor. The method proposes comparing, on each target rotation, the new maximum values of the magnetic field of each tooth to the maximum values of the same teeth from the preceding target rotation. The switching thresholds are only calculated with the new maximum values if these differ from the maximum values of the preceding target rotation. Moreover, the invention proposes using a single minimum value of the magnetic field, i.e. the absolute minimum value on a target rotation in order to calculate the switching thresholds.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: April 23, 2019
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventors: David Mirassou, Marie-Nathalie Larue, Jérôme Burg
  • Patent number: 10267869
    Abstract: A MEMS triaxial magnetic sensor device includes a sensing structure having: a substrate; an outer frame, which internally defines a window and is elastically coupled to first anchorages fixed with respect to the substrate by first elastic elements; a mobile structure arranged in the window, suspended above the substrate, which is elastically coupled to the outer frame by second elastic elements and carries a conductive path for flow of an electric current; and an elastic arrangement operatively coupled to the mobile structure. The mobile structure performs, due to the first and second elastic elements and the arrangement of elastic elements, first, second, and third sensing movements in response to Lorentz forces from first, second, and third magnetic-field components, respectively. The first, second, and third sensing movements are distinct and decoupled from one another.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 23, 2019
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Giacomo Laghi, Giacomo Langfelder, Gabriele Gattere, Alessandro Tocchio, Dario Paci
  • Patent number: 10249213
    Abstract: A multi-node motion measurement and analysis system comprises at least one motion measurement module and a receiver unit. The motion measurement module is bound to a hand-held sports appliance through an adjustable fixture or being bound to a human body. A binding position on the human body is rearrangeable based on different measurement requirements. The motion measurement module comprises a sensor module configured to measure information of acceleration, angular velocity and magnetic force, a first microprocessor module connected to the sensor module and configured to generate information of orientation, and a first RF module configured to receive the information of acceleration, angular velocity, magnetic force and orientation and transmit the received information to the receiver unit.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 2, 2019
    Assignee: Beijing Noitom Technology Ltd.
    Inventors: Haoyang Liu, Ruoli Dai, Peter Gauthier
  • Patent number: 10241137
    Abstract: First and second magnetic detection units are disposed at positions where an S/N ratio, which is a ratio between the strength of a magnetic field generated by a current to be measured flowing through a current path and the strength of an external magnetic field, is the same. A processing unit determines a normal operation state in a case where the detection signal of the first magnetic detection unit and the detection signal of the second magnetic detection unit approximately match each other. The processing unit determines that either one of the first and second magnetic detection units has failed in a case where the detection signals do not match each other.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 26, 2019
    Assignee: Alps Alpine Co., Ltd.
    Inventor: Hiroyuki Hebiguchi
  • Patent number: 10175306
    Abstract: An exemplary magnetic flux sensor in accordance with the present invention is characterized by an electrical output that is proportional to the total static and dynamic flux passing normally through a large area. An oscillating electrical current passing down a conducting area produces Lorentz forces, which are transferred to piezoelectric areas. The piezoelectric areas produce electrical voltage at the oscillation frequency whereby amplitude is proportional to the total magnetic flux passing normally through the conducting area. Demodulating the voltage provides an electrical signal with high sensitivity, dynamic range, and noise immunity.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: January 8, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: John E. Miesner
  • Patent number: 10153634
    Abstract: A switch box includes a circuit substrate having a conductor pattern, a switching element that is mounted on the circuit substrate, a bus bar having a current input and output portion formed at one end thereof and a mounting portion formed at the other end thereof, the mounting portion being connected to the conductor pattern of the circuit substrate so as to be electrically conducted to the switching element through the conductor pattern, and a magnetic sensor that is mounted on the circuit substrate to detect a magnetic field generated due to a current flowing into the bus bar. The magnetic sensor is disposed in a gap formed between the circuit substrate and the bus bar.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: December 11, 2018
    Assignee: YAZAKI CORPORATION
    Inventors: Norihiro Tozawa, Takashi Sakabe, Akira Serizawa
  • Patent number: 10132879
    Abstract: A magnetic field sensor for sensing external magnetic fields on multiple axes comprises a coil structure and a gain equalization circuit. The coil structure generates reference fields on magnetic field sensing elements in each axis. The gain equalization circuit measures and compares reference fields to generate gain-equalized output signals responsive to the external magnetic fields.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 20, 2018
    Assignee: Allegro MicroSystems, LLC
    Inventors: Alexander Latham, Craig S. Petrie
  • Patent number: 10126378
    Abstract: A single-chip Z-axis linear magnetoresistive sensor is provided. The sensor comprises a substrate, magnetoresistive sensing elements, and flux guides, wherein the magnetoresistive sensing elements are mutually electrically connected to form push arms and pull arms of a bridge; the push arms and the pull arms are alternately arranged, and the magnetoresistive sensing elements on the push arms and the pull arms are respectively located at two sides beneath the flux guides; the magnetization direction of a pinning layer of each magnetoresistive sensing element is the same and is in an X-axis direction. An external magnetic field in a Z-axis direction is converted into a magnetic field with components in an X-axis direction by the flux guides, and thus the magnetoresistive sensing elements beneath the flux guides can detect this component.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: November 13, 2018
    Assignee: MULTIDIMENSION TECHNOLOGY CO., LTD
    Inventor: James Geza Deak
  • Patent number: 10095309
    Abstract: An input device for a finger touch interface includes a magnetic unit worn on a tip of a user's thumb for establishing a magnetic field, at least a first magnetic field sensing unit worn on the tip of any finger except the thumb and at least a second magnetic field sensing unit worn on a segment of any finger except the thumb. The first/second magnetic field sensing unit is used to detect magnetic flux density of the magnetic field so as to generate a corresponding signal as an input instruction.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: October 9, 2018
    Assignee: MEDIATEK INC.
    Inventors: Bing-Yu Chen, Da-Yuan Huang, Li-Wei Chan, Shuo Yang, Rong-Hao Liang