Using Radiant Energy Patents (Class 324/96)
  • Patent number: 10313012
    Abstract: A system and method reconstructs RF sources in k-space by utilizing interference between RF signals detected by an array of antennas. The system and method may include detecting an RF interference pattern resulting from interference between RF signals in an RF coupler, where the RF signals are detected by the antennas and provided to the RF coupler by RF waveguides. The RF waveguides may have unequal RF path lengths. K-space information of the RF sources may be reconstructed from the detected RF interference pattern using known tomography reconstruction methods.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: June 4, 2019
    Assignee: Phase Sensitive Innovations, Inc.
    Inventors: Janusz Murakowski, Christopher Schuetz, Garrett Schneider, Shouyuan Shi
  • Patent number: 10305423
    Abstract: The invention is related to a photovoltaic element evaluation method, comprising a time-controlled measurement of a current-voltage characteristic of a photovoltaic element, said photovoltaic element being arranged in a measuring circuit for measuring at least an electrical current and/or an electrical voltage of said current-voltage characteristic. The invention relates furthermore to a measuring system configuration for performing time-controlled measurements of current-voltage characteristics of replaceable photovoltaic elements.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 28, 2019
    Assignee: TUV Rheinland (Shanghai) Co., LTD.
    Inventors: Christos Monokroussos, Damien Etienne
  • Patent number: 10263759
    Abstract: In some embodiments, the circuits (and methods) may include a reference generator configured to generate a reference signal. The circuits (and methods) may also include a signal presence detection module configured to perform calibration on itself, during a calibration phase, based upon the reference signal. The signal presence detection module may be further configured to receive an input signal. The signal presence detection module may be further configured to perform detection, during a signal amplitude detection phase, of a state of the input signal. According to some embodiments, the circuits (and methods) may include a peak detector of the signal presence detection module shared by the calibration and the detection. In some embodiments of the circuits (and methods), the reference generator may be unpowered during the signal amplitude detection phase. The calibration and the detection may share the peak detector based upon time division multiplexing.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: April 16, 2019
    Assignee: Cavium, LLC
    Inventors: Lu Wang, Scott E. Meninger
  • Patent number: 10255781
    Abstract: A floating apparatus for alerting people of the presence of voltage in water. When the floating apparatus is placed in water and in an active state, it detects when at least a threshold level of voltage is present in the water and generates an alert signal in response to detecting the threshold level of voltage is present. The floating apparatus may detect the threshold level of voltage is present without requiring that a ground wire be connected between an electrical circuit of the floating apparatus and a fixed structure exterior of the water such as soil surrounding the water.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: April 9, 2019
    Assignee: BRIAN AND NEAL'S BIG ADVENTURE, LLC
    Inventors: Aaron Neal Branstetter, Brian Byrd
  • Patent number: 10215694
    Abstract: A device for measuring and characterizing solid-state devices or integrated circuits at RF frequencies up to 1.0 THz and beyond is provided that includes a transmitting photomixing probe structure and a receiving photomixing probe structure. The transmitting photomixing probe structure and the receiving photomixing probe structure are ac-coupled to the solid-state device or integrated circuit in a contact-free manner.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 26, 2019
    Assignee: Wright State University
    Inventor: Elliott R Brown
  • Patent number: 10218236
    Abstract: An electrodynamic machine includes a housing and a rotor, as well as a neutral point, wherein the neutral point is located inside the housing and the neutral point ends are interconnected by means of shorting bridges, and the shorting bridges are designed such that the neutral point ends inside the generator housing are electrically isolated from each other.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 26, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Waldemar Kowalski, Christoph Lehmann
  • Patent number: 10218438
    Abstract: An optical imaging system and method that reconstructs RF sources in k-space by utilizing interference amongst modulated optical beams. The system and method involves recording with photodetectors the interference pattern produced by RF-modulated optical beams conveyed by optical fibers having unequal lengths. The photodetectors record the interference, and computational analysis using known tomography reconstruction methods is performed to reconstruct the RF sources in k-space.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: February 26, 2019
    Assignee: Phase Sensitive Innovations, Inc.
    Inventors: Janusz Murakowski, Chris Schuetz, Garrett Schneider, Shouyuan Shi
  • Patent number: 10211489
    Abstract: Light is transmitted from a light source through or from a separator of a battery cell and received by one or more light detectors. The light that is normally transmitted through the separator is scattered, absorbed, wavelength-shifted or otherwise distorted by an impending fault in the vicinity of or within the separator. The change in light due to the impending fault is measured by a detector and a signal from the detector is processed to identify the impending fault so that a warning can be generated indicative of the impending fault. In particular, one or both of the light source and detector are enclosed within a battery cell housing.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: February 19, 2019
    Assignee: Battelle Memorial Institute
    Inventors: C. Alexander Morrow, Steven M. Risser, James H. Saunders
  • Patent number: 10191091
    Abstract: A circuit board with a conductor path having a recess, an implant with left, right, lower and upper edges arranged in the recess, where the implant has first and second optical layers, a second optical layer and a conductor arranged between them, the first and the second optical layer each have at least one light-conducting structure with first and second ends, where a light-conductor is arranged in a right edge of the implant, in which respective second ends of the light-conducting structures are located, such that light fed in at the first end of the optical fiber of the first optical layer is deflected to the second end of the light-conducting structure of the second optical layer such that a beam path of the light encompasses the conductor, and the circuit also includes an optical transmitter and an optical receiver with and evaluator that form a fiber optic current sensor.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: January 29, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Pfefferlein, Ulrich Wetzel
  • Patent number: 10135200
    Abstract: A platform embedded in an electrical cable that stores and transmits data or information related to the electrical cable is designed. The embedded platform includes a non-volatile memory element to store product data describing at least one of electrical characteristics and certifications of the electrical cable. The platform also includes a current detector to detect a current that flows in the electrical cable based on a magnetic field generated by the current. The platform further includes a communication circuit to transmit at least one of the stored product data and information related to the detection of the current to a remote device.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 20, 2018
    Assignee: International Business Machines Corporation
    Inventors: Marvin M. Misgen, Michael P. Petrich, Joseph F. Prisco
  • Patent number: 10076261
    Abstract: A range of technique for investigating a sample such as obtaining images and/or spectral information are described. The techniques include a method for deriving structural information about a sample as a continuous function of the depth below the surface of the sample, a method for evaluating a part of the structure of a sample located between two interfaces within the sample, and a contrast enhancing method and apparatus which has a quick image acquisition time.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: September 18, 2018
    Assignee: TeraView Limited
    Inventors: Donald Dominic Arnone, Bryan Edward Cole, Craig Michael Ciesla
  • Patent number: 10078019
    Abstract: The inventive configurable chiral fiber sensor with a tip-positioned sensing element, is readily configurable for use in a variety of applications (such as applications involving pressure, temperature, and even axial twist sensing), and is particularly suitable for applications requiring highly precise and accurate sensor readings within corresponding predefined limited sensing ranges. Advantageously, the inventive configurable chiral fiber sensor with a tip-positioned sensing element, is operable to utilize a wide variety of light sources, photodetectors, and related devices for sensor interrogation.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: September 18, 2018
    Assignee: Chiral Photonics, Inc.
    Inventors: Victor Il'ich Kopp, Jonathan Singer, Daniel Neugroschl
  • Patent number: 10041980
    Abstract: A three-dimensional surface potential distribution measurement apparatus includes: a laser light source; a Pockels crystal; a mirror; a light detector; a support structure which supports the aforementioned elements while maintaining a relative positional relationship therebetween; a movement driver which can move the support structure three-dimensionally; a rotary driver which supports the test object and can rotate the test object about an axis extending in a longitudinal direction of the test object; and a drive controller which controls the movement driver and the rotary driver. The drive controller coordinates a driving operation by the movement driver and by the rotary driver while maintaining a gap between the second end face of the Pockels crystal and a surface of the test object at a predetermined value such that the second end face of the Pockels crystal approaches all the surfaces of the electric field reduction system on the test object.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: August 7, 2018
    Assignees: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Masaaki Furukawa, Kodai Ushiwata, Tetsuo Yoshimitsu, Yuichi Tsuboi, Kunihiko Hidaka, Akiko Kumada, Hisatoshi Ikeda
  • Patent number: 10009098
    Abstract: An optical imaging system and method that reconstructs RF sources in k-space by utilizing interference amongst modulated optical beams. The system and method involves recording with photodetectors the interference pattern produced by RF-modulated optical beams conveyed by optical fibers having unequal lengths. The photodetectors record the interference, and computational analysis using known tomography reconstruction methods is performed to reconstruct the RF sources in k-space.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 26, 2018
    Assignee: Phase Sensitive Innovations, Inc.
    Inventors: Janusz Murakowski, Chris Schuetz, Garrett Schneider, Shouyuan Shi
  • Patent number: 9964566
    Abstract: Devices and methods for measuring an electrical characteristic, in particular, for measuring current are provided. The devices can use a pair of MEMS optical modulators as opposed to the more conventional coil and associated oil insulation arrangement.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: May 8, 2018
    Assignee: The University of Manchester
    Inventor: Haiyu Li
  • Patent number: 9933245
    Abstract: The invention relates to an interferometric distance measuring arrangement for measuring surfaces, with at least one laser source, which can be tuned, with a coherence length for generating measurement radiation modulated by a wave length ramp, an optical beam path with an optical transmitting system for emitting the measurement radiation to the surface and an optical capturing system for capturing the measurement radiation back-scattered by the surface, comprising a measuring arm and a reference arm and a radiation detector and an evaluation unit for determining the distance from a reference point of the distance measuring device to the surface. Channels are defined by at least one beamsplitter n?2 for the parallel emission of measurement radiation, respectively one different sub area of the measurement range defined by the coherence length is allocated to the channels.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: April 3, 2018
    Assignee: HEXAGON TECHNOLOGY CENTER GMBH
    Inventor: Thomas Jensen
  • Patent number: 9870773
    Abstract: Methods of identifying available connector ports on rack mounted equipment use an image capture device to capture an image of a front face of an equipment rack. The captured image is compared to at least one stored image. A patch cord insertion status of at least one connector port included on an item of equipment that is mounted on the equipment rack is then determined based at least in part on the comparison of the captured image to the at least one stored image.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 16, 2018
    Assignee: CommScope, Inc. of North Carolina
    Inventors: Michael G. German, G. Mabud Choudhury, Matias Peluffo
  • Patent number: 9829227
    Abstract: A heat exchanger includes a plurality of refrigerant flow paths separated by a distributor and is configured to allow a refrigerant inflow amount to each of the plurality of refrigerant flow paths to be adjusted by a pressure loss in a corresponding one of a plurality of capillaries connected between the distributor and the plurality of refrigerant flow paths. Inner diameters of the plurality of capillaries are limited to two types. An inner diameter of one type of the plurality of capillaries having a larger inner diameter is 1.3 to 1.6 times larger than an inner diameter of an other type of the plurality of capillaries having a smaller inner diameter.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: November 28, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tomonobu Izaki, Masahiko Takagi
  • Patent number: 9817051
    Abstract: An alternating current loss measuring apparatus for superconductors includes a superconductor specimen, a magnetic field applying coil, a radiation shield, a vacuum vessel, first cooling means, and second cooling means. The first cooling means or the second cooling means is provided with a temperature regulating mechanism. The magnetic field applying means and the radiation shield are set to be a first cooling part, whereas the superconductor specimen is set to be a second cooling part, and the first cooling part and the second cooling part are cooled by first and second cooling means, respectively. A high thermal resistance member is disposed between the superconductor specimen and the second cooling means, and temperature measuring means are disposed at at least two positions on the high thermal resistance member. The alternating current loss of a superconductor under an external magnetic field can be measured at each of different temperatures.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 14, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuhiko Kawakami, Takeshi Kawamura, Manabu Aoki, Yukinobu Imamura
  • Patent number: 9791312
    Abstract: A vibration detector and method of measuring vibration are described. The vibration detector includes an optical fiber comprising a reference reflector and a delay coil, and one or more sensors comprised at respective one or more locations in the optical fiber, each of the one or more sensors including a center reflector and two side reflectors on either side of the center reflector, the delay coil eliminating detection of interference among reflections from the one or more sensors. The vibration detector also includes a light source to introduce light into the optical fiber to interrogate the optical fiber, a detector to obtain interference signals, each of the interference signals being based on interference between reflections from the reference reflector and one of the one or more sensors; and a processor to process each of the interference signals to obtain vibration measurements.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: October 17, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventor: Daniel Boyd Cooper
  • Patent number: 9696357
    Abstract: A method measures a resistance of an element that is operably coupled to receive an AC line voltage. The method includes obtaining a first voltage measurement value V1A from a first side of the element at a first time, and obtaining a second voltage measurement value V2A from a second side of the element at the first time. The method also includes obtaining a first current measurement value IA through the element at the first time, and obtaining a second current measurement value IB through the element at the second time. The method further includes obtaining a third voltage measurement value V1B from the first side of the element at a second time, and obtaining a fourth voltage measurement value V2B from the second side of the element at the second time. The processing device determines the resistance at least in part based on the values V1A, V2A, V1B, V2B, IA and IB. The determination based on an adjusted difference of V2B and V2A.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: July 4, 2017
    Assignee: Landis+Gyr, Inc.
    Inventor: John T. Voisine
  • Patent number: 9680412
    Abstract: A method and an apparatus for testing photovoltaic modules are provided, wherein power that a photovoltaic module outputs or draws is modulated a modulating frequency, the photovoltaic module is scanned using a camera and the camera signal generated by the camera is evaluated in order to obtain a luminescence image of the photovoltaic module which is used for detecting defects on the photovoltaic module. The photovoltaic module is operated only in the forward direction and the camera signal is evaluated using a digital filter, such as a lock-in filter.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: June 13, 2017
    Assignee: SOLARZENTRUM STUTTGART GMBH
    Inventors: Liviu-Mihai Stoicescu, Michael Reuter, Juergen H. Werner
  • Patent number: 9651607
    Abstract: A photo device inspection apparatus is an apparatus for inspecting a solar cell panel, which is a photo device. The photo device inspection apparatus includes an irradiation part configured to irradiate the solar cell panel with pulsed light radiated from a femtosecond laser, which is a light source, an electromagnetic wave detection part configured to detect a pulse of an electromagnetic wave radiated from the solar cell panel in response to irradiation with the pulsed light, and a current detection part configured to detect a current generated by the solar cell panel in response to irradiation with the pulsed light.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: May 16, 2017
    Assignees: SCREEN HOLDINGS CO., LTD., OSAKA UNIVERSITY
    Inventors: Hidetoshi Nakanishi, Akira Ito, Iwao Kawayama, Masayoshi Tonouchi
  • Patent number: 9627562
    Abstract: In various embodiments of the present disclosure, there is provided a method of manufacturing a monolayer graphene photodetector, the method including forming a graphene quantum dot array in a graphene monolayer, and forming an electron trapping center in the graphene quantum dot array. Accordingly, a monolayer graphene photodetector is also provided.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: April 18, 2017
    Assignee: Nanyang Technological University
    Inventors: Yongzhe Zhang, Qijie Wang
  • Patent number: 9581624
    Abstract: An electric power line monitoring, communication and response system schedules the transmission of packets to occur during voltage zero-crossing intervals when corona is minimized. The transmitters may be located at high voltage hanging directly from the power line conductors along with associated current transformers and voltage sensors. A system of these transmitters distributed throughout the power grid communicate with each other in a data-forward manner to bring complete, real-time current and voltage waveform, device status and fault monitoring information to data aggregation waypoints, such as transmission substations where supervisory control and data acquisition (SCADA) equipment is installed. The power line monitoring data is then transmitted from the data waypoints to a central monitoring and control center, typically using existing SCADA equipment, to provide h detailed power line monitoring data for a large number of data monitoring points distributed throughout the power grid.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: February 28, 2017
    Assignee: Southern States, LLC
    Inventors: Joseph R. Rostron, Joshua D. Keister, Harold Dean Allen, III
  • Patent number: 9581622
    Abstract: In a fiber-optic current sensor, a 22.5° Faraday rotator, which is part of the sensing fiber coil, determines the working point of the sensor. The coil is operated with substantially linearly polarized light or incoherent substantially left and right circularly polarized light waves. In one arrangement, a polarization beam splitter generates two optical signals that vary in anti-phase with changing current. A signal processor determines the current from the two anti-phase signals. Appropriately detuned and oriented fiber-optic half-wave or quarter-wave retarders before the fiber coil are used to reduce or cancel the adverse effects of temperature and bend-induced birefringence on the measurement signal. Moreover, the temperature may be derived from the difference in the bias of the anti-phase signals and may be used to cancel temperature effects in the signal processor.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: February 28, 2017
    Assignee: ABB Research Ltd.
    Inventors: Georg Mueller, Andreas Frank, Klaus Bohnert, Xun Gu
  • Patent number: 9564966
    Abstract: Methods and systems are described for sampling an LCOM message signal at a rate less than the Nyquist rate (i.e., an “alias frequency”) and accurately reconstructing the entire LCOM message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. The described methods and system take advantage of the repetition of LCOM signals, sampling an LCOM signal at a frequency less than the Nyquist frequency over at least two repetitions of a signal waveform, thereby collecting sufficient samples to accurately reconstruct the signal. The samples of each successive signal waveform repetition are offset from one another so that different points on the waveform are sampled, thus facilitating reconstruction of the signal.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: February 7, 2017
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Christian Breuer, Anant Aggarwal, Barry Stout
  • Patent number: 9544510
    Abstract: An apparatus and method may be used to create images, e.g., three-dimensional images, based on received radio-frequency (RF), e.g., millimeter wave, signals carrying image data. The RF signals may be modulated onto optical carrier signals, and the resulting modulated optical signals may be cross-correlated. The resulting cross-correlations may be used to extract image data that may be used to generate three-dimensional images.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: January 10, 2017
    Assignee: Phase Sensitive Innovations, Inc.
    Inventors: Janusz Murakowski, Garrett Schneider, Shouyuan Shi, Christopher A. Schuetz, Dennis W. Prather
  • Patent number: 9459294
    Abstract: A power flow management method and a controller are provided. First, sensing voltage signals and sensing current signals between a power supplying module and a multilevel converter module are obtained. Positive sequence voltage signals, positive sequence current, negative voltage signals and negative current signals are generated according to the sensing voltage signals and the sensing current signals. Forward powers are calculated according to the positive sequence voltage signals, positive sequence current, negative voltage signals and negative current signals. DC voltage signals are obtained from the multilevel converter module, and feedback powers are calculated accordingly. A magnitude and a phase of a zero sequence voltage injection signal are determined according to the forward powers and the feedback powers. Accordingly, the generated zero sequence voltage injection signal is used to manage power flow effectively.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: October 4, 2016
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventor: Po-Tai Cheng
  • Patent number: 9442161
    Abstract: A detector device for functional certification includes a probe, a waveguide and a first micro-antenna. The probe includes a tip portion and a through-portion, wherein an end of the through-portion penetrates a first surface of the probe to form a first opening, and an opposite end of the through-portion penetrates the tip portion to form a second opening. The waveguide is disposed in the through-portion. The first micro-antenna is installed in the second opening and electrically connected with the waveguide.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: September 13, 2016
    Assignee: NATIONAL APPLIED RESEARCH LABORATORIES
    Inventors: Yu-Shao Shiao, Guo-Wei Huang
  • Patent number: 9410282
    Abstract: A method and apparatus for drying textile material with a radio frequency (RF) applicator and a controller, the method includes energizing the RF applicator to generate a field of electromagnetic radiation (e-field), measuring a parameter related to the energization of the RF applicator, determining a drying cycle of operation in the controller based on the measured parameter, and controlling the energization of the RF applicator according to the determination of the drying cycle of operation, wherein the textile material is dried.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: August 9, 2016
    Assignee: Whirlpool Corporation
    Inventors: Mark L. Herman, Daniel M. Putnam
  • Patent number: 9391723
    Abstract: A method is disclosed for delivering data to an end user device, the method including receiving an optical signal containing broadband digital data; converting the optical signal to a first radio frequency signal; transmitting the first radio frequency (RF) signal from an RF transmitter to a first RF receiver in a first local region associated with the end user device; and converting the received radio frequency signal to a digital data signal. A system and computer program for performing the method are disclosed.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: July 12, 2016
    Assignee: AT&T Intellectual Property I, LP
    Inventor: Adrian S. Matthews
  • Patent number: 9322854
    Abstract: A method of measurement using a detachable current and voltage sensor provides an isolated and convenient technique for to measuring current passing through a conductor such as an AC branch circuit wire, as well as providing an indication of an electrostatic potential on the wire, which can be used to indicate the phase of the voltage on the wire, and optionally a magnitude of the voltage. The device includes a housing that contains the current and voltage sensors, which may be a ferrite cylinder with a hall effect sensor disposed in a gap along the circumference to measure current, or alternative a winding provided through the cylinder along its axis and a capacitive plate or wire disposed adjacent to, or within, the ferrite cylinder to provide the indication of the voltage.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: April 26, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Gary D. Carpenter, Wael El-Essawy, Alexandre Peixoto Ferreira, Thomas Walter Keller, Juan C. Rubio, Michael A. Schappert
  • Patent number: 9310399
    Abstract: A fiber-optic current sensor includes a measuring unit having a light source and a light detector, and a sensing head having a sensing fiber wound around a conductor and a retarder connected to the sensing fiber. The scale factor as a function of current of the fiber-optic current sensor is described by the product of two scaling functions fe? and fs? for the measuring unit and the sensing head, respectively. The data describing the scaling functions fe?, fs? is stored in a memory of the measuring unit, while the data describing the scaling function fs? is also stored in a memory of the sensing head. Providing two such memory devices allows to store the scaling functions fe? and fs? separately, thereby turning the control unit as well as the sensor head into easily replaceable modules.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 12, 2016
    Assignee: ABB RESEARCH LTD
    Inventors: Klaus Bohnert, Andreas Frank, Robert Wüest
  • Patent number: 9239344
    Abstract: A power-measurement device includes a power detector and a tempering device. The power detector is integrated on a monolithic chip as an integrated circuit. It converts a high-frequency test signal into a signal which displays the power of the high-frequency test signal. The power-measurement device further includes a signal input. In this context, the tempering device is arranged outside the monolithic chip on a side of the monolithic chip facing away from the integrated circuit. The signal input is connected to the power detector by a first line on a synthetic substrate. The signal input guides the high-frequency test signal to the power detector by the first line.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: January 19, 2016
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Werner Perndl, Toralf Bratfisch, Michael Katzer, Thomas Reichel
  • Patent number: 9188610
    Abstract: Apparatus for measuring multiple primary electric currents in a non-contact manner by utilizing multiple current transformers. Each current transformer is coupled with one of the primary electric currents. Each current transformer comprises a magnetic core and a secondary winding. The apparatus comprises: A current-sensing means for sensing current transformer secondary currents and for producing an information signal; a voltage control and selection circuit for periodically connecting each current transformer secondary winding to the current-sensing means and for periodically controlling the voltage across each secondary winding; a power supply circuit for providing operating power to the voltage control and selection circuit; and a control circuit for receiving and processing the information signal and for controlling the voltage control and selection circuit.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: November 17, 2015
    Inventor: Thomas G. Edel
  • Patent number: 9182427
    Abstract: In an electric/magnetic field probe using an optical fiber, when a stress is applied to the fiber, the polarization state of the light propagating in the fiber changes, and the signal level of the electric or magnetic field detection becomes unstable. For coping with this problem, for suppressing the curve or waggle of the optical fiber caused by a stress applied to the fiber, an electric/magnetic field sensor unit composed of the fiber and EO/MO material is fixed on a quartz substrate, for example, and the part of the fiber other than the sensor unit is stored in an acrylic tube and fixed. Further, polarization adjustment parts like a polarization controller, an optical analyzer or the like is installed in the housing, so that a stress caused by wind pressure or contact is not applied to the fiber connected to the parts.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: November 10, 2015
    Assignee: NEC Corporation
    Inventors: Mizuki Iwanami, Tsuneo Tsukagoshi
  • Patent number: 9158054
    Abstract: In one aspect, the present subject matter is directed to a sensor. The sensor includes an encapsulated fiber optic sensor and a ring shaped structure. The encapsulated fiber optic sensor passes through the ring shaped structure. The ring shaped structure is configured to resonate at a predetermined frequency.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: October 13, 2015
    Assignee: University of South Carolina
    Inventors: Victor Giurgiutiu, Matthieu Gresil, Roman Catalin
  • Patent number: 9134731
    Abstract: Apparatuses, methods and storage medium associated with computerized assist or autonomous driving of vehicles are disclosed herein. In embodiments, a method may include receiving, by a computing device, a plurality of data associated with vehicles driving at various locations within a locality; and generating, by the computing device, one or more locality specific policies for computerized assisted or autonomous driving of vehicles at the locality, based at least in part on the data associated with vehicles driving at various locations within the locality. Other embodiments may be described and claimed.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: September 15, 2015
    Assignee: Intel Corporation
    Inventors: Jennifer A. Healey, Alexandra C. Zafiroglu
  • Patent number: 9134344
    Abstract: An optical sensor assembly, for installation on a current carrying cable, senses the current in the cable and provides an electrical output indicating the current. To sense the current, a magnetic concentrator is placed in close proximity to the cable and creates a magnetic field representing current in the cable. An optical current sensor, within the created magnetic field, exposes a beam of polarized light to the magnetic field. The beam of polarized light is rotated thereby, by Faraday effect, according to the current in the cable. The amount of rotation is analyzed and converted to electrical signals to portray the current in the cable. The electrical signals may be processed, evaluated and analyzed to provide one or more of several elements of quality of the current in the cable.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: September 15, 2015
    Assignee: GRIDVIEW OPTICAL SOLUTIONS, LLC.
    Inventors: Joseph Yossi Harlev, Leonard Johnson, Rhad Veazey, Theodore Konetski
  • Patent number: 9121872
    Abstract: An electro-optic effect based optical voltage transformer comprises an optical voltage sensor head and an electrical unit, wherein the electrical unit comprises an optical closed-loop feedback control unit and a signal processing unit, the optical closed-loop feedback control unit is connected to the optical voltage sensor head and the optical voltage sensor head is connected to the signal processing unit. In this invention, the light source output power is more stable, the light source center wavelength drift is effectively controlled and the output power coastdown caused by light source aging is prevented; the optical power fluctuation of the optical polarization caused by factors such as temperature, optical fiber vibration, etc., is eliminated, which is conductive to stability and reliability of the optical system; the accuracy of data is improved.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: September 1, 2015
    Assignee: BEIJING AEROSPACE TIMES OPTICAL-ELECTRONIC TECHNOLOGY CO. LTD.
    Inventors: Wei Wang, Zhixin Zhang, Jinquan Tan, Xuefeng Wang, Junlei Xia
  • Patent number: 9103871
    Abstract: Simultaneous measurement of an internal quantum efficiency and an external quantum efficiency of a solar cell using an emitter that emits light; a three-way beam splitter that splits the light into solar cell light and reference light, wherein the solar cell light strikes the solar cell; a reference detector that detects the reference light; a reflectance detector that detects reflectance light, wherein the reflectance light comprises a portion of the solar cell light reflected off the solar cell; a source meter operatively coupled to the solar cell; a multiplexer operatively coupled to the solar cell, the reference detector, and the reflectance detector; and a computing device that simultaneously computes the internal quantum efficiency and the external quantum efficiency of the solar cell.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: August 11, 2015
    Assignee: Intermolecular, Inc.
    Inventors: Yun Wang, Tony P. Chiang, Chi-I Lang
  • Patent number: 9093292
    Abstract: A light-emitting system includes a first and second power input terminals; for receiving an AC power input to the light-emitting system; a first, second, third, and fourth light-emitting-diode groups each having at least one light-emitting diode; a first circuit path having at least one light-emitting diode from each of the first and second light-emitting-diode groups, with the light-emitting diodes coupled serially and emitting light during a positive power cycle; and a second circuit path having at least one light-emitting diode from each of the third and fourth light-emitting-diode groups, with the light-emitting diodes coupled serially and emitting light during a negative power cycle. The second light-emitting-diode group and the third light-emitting-diode group share at least one common light-emitting diode, The first and second power input terminals, the first, second, third, and fourth light-emitting-diode groups, and the first and second circuit paths may belong to a single chip light-emitting system.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: July 28, 2015
    Assignee: EPISTAR CORPORATION
    Inventors: Wen-Yung Yeh, Yu-Chen Yu, Hsi-Hsuan Yen, Jui-Ying Lin
  • Patent number: 9077197
    Abstract: A battery residual amount measurement system including includes a current detection section that detects a current value of current discharged from a battery that is an object of measurement; a first storage section that stores reference undischargeable amounts that are determined in advance in accordance with ambient temperatures of the battery and current values of current discharged from the battery; and a calculating section that, when a discharging operation is carried out at the battery, acquires, from the first storage section, the reference undischargeable amount that corresponds to an ambient temperature of the battery and the current value detected by the current detection section, and calculates a battery residual amount on the basis of a undischargeable amount that is calculated and computed on the basis of the acquired reference undischargeable amount and a nominal battery capacity of the battery.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: July 7, 2015
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventors: Hitoshi Endo, Kentaro Kotota
  • Publication number: 20150137793
    Abstract: Systems and methods for precision optical imaging of electrical currents and temperature in integrated circuits are disclosed herein. In one aspect of the disclosed subject matter, a method for detecting a characteristic of an integrated circuit can include depositing at least one diamond structure, having at least one color center therein, onto a side of the integrated circuit.
    Type: Application
    Filed: December 10, 2014
    Publication date: May 21, 2015
    Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Dirk R. ENGLUND, Matthew E. TRUSHEIM
  • Patent number: 9030189
    Abstract: Photo-field-effect transistor devices and associated methods are disclosed in which a photogate, consisting of a quantum dot sensitizing layer, transfers photoelectrons to a semiconductor channel across a charge-separating (type-II) heterointerface, producing a sustained primary and secondary flow of carriers between source and drain electrodes. The light-absorbing photogate thus modulates the flow of current along the channel, forming a photo-field effect transistor.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: May 12, 2015
    Inventor: Edward Hartley Sargent
  • Patent number: 9024616
    Abstract: A bi-directional current limiter may be configured to receive an AC signal and bi-directionally limit the loop current to a predetermined current value. A first and second zone may be configured in series with the AC signal and bi-directional current limiter. The first and second zone may include unidirectional current limiters to limit a unidirectional current that is proportionately less than the bi-directionally limited current. A first opto-coupler circuit (ISO1) may be configured to detect both high and low current states in the current loop circuit. Second and third opto-coupler circuits (ISO2 and ISO3) associated with the first and second zones may be configured to detect only high current states in the current loop circuit. The status of the first and second zones may then be determined by an analysis of the current level in the current loop circuit during two half cycles as determined by the various current limiters.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Tyco Safety Products Canada Ltd.
    Inventors: Andrei Bucsa, Stephen D. W. Fosty
  • Publication number: 20150115934
    Abstract: In a fiber-optic current sensor, a 22.5° Faraday rotator, which is part of the sensing fiber coil, determines the working point of the sensor. The coil is operated with substantially linearly polarized light or incoherent substantially left and right circularly polarized light waves. In one arrangement, a polarization beam splitter generates two optical signals that vary in anti-phase with changing current. A signal processor determines the current from the two anti-phase signals. Appropriately detuned and oriented fiber-optic half-wave or quarter-wave retarders before the fiber coil are used to reduce or cancel the adverse effects of temperature and bend-induced birefringence on the measurement signal. Moreover, the temperature may be derived from the difference in the bias of the anti-phase signals and may be used to cancel temperature effects in the signal processor.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Inventors: Georg Mueller, Andreas Frank, Klaus Bohnert, Xun Gu
  • Publication number: 20150102801
    Abstract: A method for detecting the presence of an energized e-field in a space, wherein the space includes at least one electrically conductive element disposed in the space and coupled with a controller, the method including receiving in the controller a signal from the at least one electrically conductive element, comparing the value to a threshold, and if the value exceeds the threshold, determining that an energized e-field occupies the space, and sending a signal from the controller indicative of the presence of the energized e-field in the space.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 16, 2015
    Applicant: Whirlpool Corporation
    Inventors: MARK L. HERMAN, GARRY L. PETERMAN, DANIEL M. PUTNAM
  • Publication number: 20150097551
    Abstract: This patent application discloses techniques and devices for sensing or measuring electric currents and/or temperature based on photonic sensing techniques. An optical current sensor head is located near or at a current-carrying conductor so that a magnetic field associated with the current is present at a Faraday material and the optical detection unit detects the light from the Faraday material to determine a magnitude of the current. An optical temperature sensor head is located near or at a location so that the temperature at a temperature-sensing Faraday material is reflected by the optical polarization rotation which is detected to determine the temperature.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventor: Xiaotian Steve Yao