Patents Examined by Vincent Q. Nguyen
  • Patent number: 10852356
    Abstract: A method for magnetic/impedance burst testing of large electric motors to determine broken rotor bar defect. The method providing a portable tester and includes a Signal Processor, a single-phase power source VAC, an AC/DC boost converter connected to the power source, at least one energy storage device connected to the AC to DC boost converter, a Pulse Width Modulated drive module (PWM) connected to the at least one energy storage device, and a series of at least three switches (IPM) using switch/level boost-type PWM rectification. The burst test is repeated until a full rotation of magnetic angles are tested and recorded with the Signal Processor. Rotor impedance versus magnetic angle of the full rotation is verified in order to check for failure, and broken rotor bar defect is determined when a shift in measured stator's impedance/admittance level for any of the given magnetic angles is identified by the Signal Processor.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: December 1, 2020
    Assignee: AVO Multi-Amp Corporation
    Inventor: Craig Powers
  • Patent number: 10852336
    Abstract: A method for islanding detection in an electrical power grid supplied by an electrical power source. The method includes measuring an output voltage (Vpcc) and a grid current (Ig) at an interconnection point of the power source with the power grid; estimating at least one grid parameter from the output voltage (Vpcc) and the grid current (Ig) based on optimizing a cost function, which minimizes a difference between the measured output voltage (Vpcc) and an estimated output voltage or a difference between the measured grid current (Ig) and an estimated grid current, which estimated output voltage or estimated output current is a function of the measured grid current (Ig) or the measured output voltage (Vpcc) and the least one estimated grid parameter; and detecting an islanding condition by detecting a jump and/or a deviation in the at least one estimated grid parameter.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: December 1, 2020
    Assignee: ABB Schweiz AG
    Inventors: Silvia Mastellone, Peter Al-Hokayem, Pietro Raboni
  • Patent number: 10852360
    Abstract: A fault detection scheme can include use of a relatively high injection impedance between an input port for analog measurements from a sensor and a stimulus generation circuit controlled in coordination with analog measurement. The stimulus generation circuit can provide a stimulus signal through the injection impedance. A magnitude of the injection impedance can be specified relative to a source impedance associated with a source (e.g., a sensor or other device) coupled to the input port. For example, a magnitude of the injection impedance can be specified to be larger than the source impedance or the injection impedance magnitude can be specified to be a multiple of the source impedance.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 1, 2020
    Assignee: Analog Devices International Unlimited Company
    Inventors: Michal Brychta, Adrian Sherry
  • Patent number: 10847069
    Abstract: In an embodiment, the display light-on test device includes: a plurality of D-type connectors configured to be correspondingly connected to mobile phones with different connector types, and receive and transmit power signals; a sampling processor configured to receive the power signals, sample and quantize the power signals into digital data and/or image data, and output the data to a field programmable gate array chip, receive commands, and output, according to the commands, corresponding micro control commands; the field programmable gate array chip connected to the D-type connectors and the sampling processor, and configured to receive the data and the micro control commands, generate corresponding micro control parameters, and process, according to the micro control parameters, the data, to output data required to perform the light-on tests to the display modules to be tested, so that the light-on tests are performed on the display modules to be tested.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: November 24, 2020
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Hai Wang, Kunyueh Tsai
  • Patent number: 10845430
    Abstract: A magnetoresistive sensor with a compensating coil comprising a silicon substrate, collection of MR sensor units disposed on the silicon substrate, collection of rectangular soft ferromagnetic flux concentrators, serpentine compensating coil, connecting circuit, and collection of bond pads used for electrical connections. The MR sensor units are interconnected to form a push-pull sensor bridge. The MR sensor units are disposed below the gap between two adjacent soft ferromagnetic flux concentrators. The serpentine compensating coil has a positive current strap over the MR sensor units and a negative current strap under the soft ferromagnetic flux concentrators. The MR sensor bridge and the serpentine compensating coil are connected through bond pads and covered with an encapsulation structure. The magnetoresistive sensor also comprises a spiral initialization coil placed on a substrate within the encapsulating structure.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: November 24, 2020
    Assignee: MultiDimension Technology Co., Ltd.
    Inventor: James Geza Deak
  • Patent number: 10845417
    Abstract: A battery management device includes an SOCv calculation unit that calculates a state of charge using voltage across both ends of a battery, an SOCi calculation unit calculates a state of charge by integrating currents flowing in the battery, and an SOCw calculation unit performs weighted addition of the battery's state of charges calculated by the SOCv and the SOCi calculation unit. An SOCi biased time calculation unit calculates an SOCi biased time based on one or a plurality of elapsed time from the end of a previous system operation or the end of charging or discharging during the previous system operation to the start of the current system, temperature, degree of degradation, and polarization voltage of the battery. The SOCw increases a weight of the state of charge of the battery calculated by the SOCi calculation while the elapsed time from the activation is within the SOCi biased time.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 24, 2020
    Assignee: VEHICLE ENERGY JAPAN, INC.
    Inventors: Yohei Nakamura, Keiichiro Ohkawa
  • Patent number: 10839188
    Abstract: A fingerprint sensing panel and a fingerprint sensor thereof are provided. The fingerprint sensor includes first to third switches, a first capacitor, an impedance variation element and a sensing circuit. The first switch receives a system high voltage and is controlled by a pre-charge signal. The first capacitor is coupled between the first switch and a reference voltage. The impedance variation element is coupled between the first switch and the reference voltage, and an impedance value of the impedance variation element is changed according to a vertical distance between the impedance variation element and a skin surface. The second switch receives the system high voltage. The third switch receives a read signal. The sensing circuit is coupled to the third switch and provides a fingerprint determination voltage.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: November 17, 2020
    Assignee: Au Optronics Corporation
    Inventors: Wen-Je Lu, Yu-Jung Liu
  • Patent number: 10837810
    Abstract: In a method for calibrating a measuring device by using a case which includes a case main body configured to accommodate the measuring device, a restricting portion configured to restrict translation of the measuring device accommodated in the case main body and reference surfaces provided in the case main body to face the respective sensor electrodes, a plurality of detection values is acquired in a state where translation of the measuring device accommodated in the case is restricted by the restricting portion, the reference surfaces face respective sensor electrodes of the measuring device and a high frequency signal is applied to the sensor electrodes. Then, coefficients in functions used in calculating measurement values are calibrated such that the measurement values become a predetermined value.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 17, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kippei Sugita, Tomohide Minami
  • Patent number: 10838024
    Abstract: A self-calibrating solid-state magnetometer for vectorized field sensing via zero-field spin-dependent recombination is realized with a wide band gap semiconductor junction. Three sets of Helmholtz coils provide a cancellation field at low frequency, as well as a modulated field at audio frequencies. The presence of the hyperfine interactions in the zero-field response as well as the low-field electrically detected magnetic resonance detection capability allows for magnetometer self-calibration.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: November 17, 2020
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventor: Corey J. Cochrane
  • Patent number: 10830806
    Abstract: A method for managing power in an airplane. Power quality data and load management data are collected from airplane systems in the airplane at a variable sampling rate using data collectors assigned to the airplane systems in which the variable sampling rate increases in response to a selected trigger event. The power quality data and the load management data are received by a power monitor from the data collectors during phases of flight for the airplane. A group of load management operations for the airplane systems are performed by a load manager in the airplane during operation of the airplane. The group of load management operations is performed using the power quality data and the load management data received from the data collectors during the phases of flight for the airplane.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: November 10, 2020
    Assignee: The Boeing Company
    Inventors: Anil Kumar, Kamiar J. Karimi, Timothy M. Mitchell, Evelyn M. Matheson, Eugene V. Solodovnik
  • Patent number: 10830826
    Abstract: Described herein are methods for determining, based on actual crank conditions, an ability of a battery connected to an electric starter motor, to start an internal combustion engine, wherein the battery is a single monobloc or a plurality of monoblocs that are electrically connected in series or parallel. The method may include: receiving battery temperature data, representing a temperature of the battery at a time of cranking the internal combustion engine; receiving voltage data monitored from the battery, determining an instantaneous minimum voltage of the battery during the time of cranking the internal combustion engine; and determining a capability of the battery to crank the internal combustion engine based on the battery temperature data and the instantaneous minimum voltage of the battery.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 10, 2020
    Assignee: NORTHSTAR BATTERY COMPANY, LLC
    Inventors: Don Karner, Frank Fleming, Ulf Krohn, Christer Lindkvist
  • Patent number: 10830839
    Abstract: Magnetic field sensors and sensing methods are provided. A magnetic sensor module is configured to measure a magnetic field whose magnitude oscillates between a first extrema and a second extrema. The magnetic sensor module includes a magnetic sensor configured to generate measurement values in response to sensing the magnetic field, and a sensor circuit. The sensor circuit is configured to generate a measurement signal based on the measurement values, compare the measurement signal to a switching threshold, generate a pulsed output signal having pulses that are generated based on the measurement signal crossing the switching threshold, measure a first characteristic of the measurement signal, update an offset of the switching threshold according to an offset update algorithm based on the measured first characteristic of the measurement signal, and selectively enable and disable the offset update algorithm based on at least a second characteristic of the measurement signal.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: November 10, 2020
    Assignee: Infineon Technologies AG
    Inventors: Simone Fontanesi, Klaus Grambichler, Tobias Werth
  • Patent number: 10830918
    Abstract: A magneto-inductive transmit antenna is provided that includes a shield formed of a magnetic material, a magnetic field source mounted on a first side of the shield, and a coil wrapped around the shield to define a number of turns. The coil is configured to conduct a current therethrough. The magnetic material is configured to exhibit a change in permeability based on the current conducted through the coil when the current is conducted through the coil. The change in permeability is configured to modulate a magnetic field of the magnetic field source. The magnetic field is modulated relative to a second side of the shield opposite the first side when the permeability is changed.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: November 10, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Nathan Daniel Strachen, Nader Behdad, John H. Booske
  • Patent number: 10823786
    Abstract: A battery monitor circuit, systems and methods are disclosed. The battery monitor circuit may have a voltage sensor, a temperature sensor, a processor for receiving a monitored voltage signal from the voltage sensor, for receiving a monitored temperature signal from the temperature sensor, and for generating voltage data and temperature data based on the monitored voltage signal and the monitored temperature signal, an antenna, and a transmitter. The battery monitor circuit may be configured for wirelessly communicating the voltage data and the temperature data to a remote device, via the antenna. In an exemplary embodiment, the battery monitor circuit is located internal to the battery and wired electrically to the battery.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 3, 2020
    Assignee: NORTHSTAR BATTERY COMPANY, LLC
    Inventors: Don Karner, Frank Fleming, Ulf Krohn, Christer Lindkvist
  • Patent number: 10823787
    Abstract: An apparatus embodiment includes a voltage regulator circuit that provides a regulated voltage supply signal, logic state circuitry, test control circuitry, and a supply-signal monitoring circuit. The logic state circuitry includes logic modules that are reconfigured between application controlled self-test modes in which data is shifted through the logic module and while being powered from the regulated voltage supply signal. The test control circuitry operates the controlled self-test mode by causing a predetermined set of the data to shift through the logic modules and that causes the logic state circuitry to load the voltage regulator circuit by stressing the voltage regulator circuit. The supply-signal monitoring circuit monitors a quality parameter of the regulated voltage supply signal and provides an indication of characteristics of the regulated voltage supply signal which bear on a likelihood that the voltage regulator circuit is associated with defective circuitry.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: November 3, 2020
    Assignee: NXP B.V.
    Inventor: Jan-Peter Schat
  • Patent number: 10823784
    Abstract: The present disclosure provides a current detection system, method and device. The current detection system includes a management unit and a current detection device that is connected with the management unit. The current detection device includes a shunt-type current measurement unit, an open-loop Hall-type current measurement unit and an isolation power unit.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: November 3, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Zhimin Dan, Wei Zhang, Yizhen Hou, Jia Xu
  • Patent number: 10825626
    Abstract: According to one or more aspects, a health sense system for a pulse width modulation (PWM) device associated with a magnetic coil is provided, and includes a health sense circuit, a health logic circuit, and a counter circuit. The health sense circuit measures one or more current measurements at a low voltage side of the pulse width modulation device. The health logic circuit determines a health bit indicative of a health score for the magnetic coil of the pulse width modulation device based on one or more of the current measurements. The counter circuit generates a feedback command for the pulse width modulation device based on the health bit.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 3, 2020
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventors: James Broadwell, Christopher Kenneth Wyatt, Dean Morgan
  • Patent number: 10823586
    Abstract: A magnetic field sensor for sensing a movement of a target object an include a substrate having a major planar surface and three or more magnetic field sensing elements disposed upon the major planar surface of the substrate. The three or more magnetic field sensing elements can have respective major response axes, each major response axis parallel to the major planar surface of the substrate. The three or more magnetic field sensing elements comprise first and third magnetic field sensing elements and a second magnetic field sensing element disposed between the first and third magnetic field sensing elements. A first spacing between the first and second magnetic field sensing elements is less than a second spacing between the second and third magnetic field sensing elements. No other magnetic field sensing elements are disposed between the first and third magnetoresistance elements.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 3, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Jeffrey Eagen, Paul A. David
  • Patent number: 10816594
    Abstract: An apparatus for testing a signal speed of a semiconductor package may include a plurality of sockets, one or more test boards including at least a first test board, an extension board and a test head. Each of the sockets may be configured to receive the semiconductor package. The first test board may include a plurality of mount regions on which the sockets may be mounted, and test lines extended from the mount regions toward at least one side surface of the first test board. The extension board may be vertically arranged at the side surface of the first test board. The extension board may be electrically connected to the test lines. The test head may be electrically connected to the extension board to provide the mount regions with a test signal for testing the signal speed of the semiconductor package through the extension board. Thus, it may not be required to change a structure of the socket in accordance with types of the semiconductor packages.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: October 27, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ki-Jae Song
  • Patent number: 10816609
    Abstract: A vehicle power system includes an inverter, outlets, and circuit breakers. The inverter supplies power to the outlets through the circuit breakers. The inverter, in response to detecting no voltage at designated amount and combination of the outlets, based on the designated amount and combination, generates a signal indicating that one or more of electrical paths to the outlets has failed or one or more of the circuit breakers is open.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: October 27, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Heinrich Enslin, Jeffery R. Grimes