Using Radiant Energy Patents (Class 324/96)
-
Patent number: 11768161Abstract: Disclosed is a signal isolating test instrument, such as an electronics test probe. The instrument includes an input to receive a floating analog signal. An upconverter is employed to modulate the floating analog signal to a microwave frequency analog signal. An isolation barrier in the instrument prevents coupling of the floating analog signal to an earth ground. The instrument employs a microwave structure to transmit the microwave frequency analog signal across the isolation barrier via electromagnetic coupling. A downconverter is then employed to demodulate the microwave frequency analog signal to obtain a ground referenced test signal corresponding to the floating analog signal.Type: GrantFiled: May 4, 2021Date of Patent: September 26, 2023Assignee: Tektronix, Inc.Inventors: Jonathan S. Dandy, Daniel G. Knierim
-
Patent number: 11726113Abstract: A current sensor is configured to detect a current flowing through an electrical conductor. The current sensor includes a core and a coil wound around the core. The core has a hollow configure to allow the electrical conductor to pass through the hollow. The core substantially has a C-shape haying a gap connected to the hollow. At least a part of the gap of the core is located inside the coil. This current sensor suppresses the influence of external noise.Type: GrantFiled: March 26, 2020Date of Patent: August 15, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yuta Sato, Hirohide Ichihashi, Mitsuru Tomita, Masakazu Kobayashi, Manabu Hashimoto
-
Patent number: 11719726Abstract: The present technology relates to a current sensing device utilizing a magnetic flux concentrator loop composed of segmented ferromagnetic components. The concentrator loop is designed to focus magnetic flux generated by a current carrying cable, wire, or conductor along the Faraday rotation axis of a magneto-optic sub-assembly. The segmented magnetic flux concentrator encompassing the current carrying cable is held close to a circumferential geometry about the cable, in order to maximize magnetic flux concentration on the magneto-optic sensor. The segmented design of the magnetic flux concentrator loop, combined with a clamping mechanism, allows for easy, straightforward attachment and detachment, during installation and removal or the current sensing device from the current carrying cable.Type: GrantFiled: September 28, 2021Date of Patent: August 8, 2023Assignee: MICATU INC.Inventors: Anthony Fiorille, James Kennedy, Michael Oshetski
-
Patent number: 11681016Abstract: In a general aspect, a radar system includes a vapor cell sensor system and a radio frequency (RF) optic. The vapor cell sensor system includes a vapor cell sensor, and the RF optic is configured to direct an RF field onto the vapor cell sensor. The RF field includes one or more RF pulses that define a radar signal. The radar system also includes a signal processing system configured to perform operations that include generating a digital signal based on a signal from the vapor cell sensor system. The digital signal represents a measured response of the vapor to the RF field over a time period. The operations also include applying a matched filter to the digital signal to generate a filtered signal and processing the filtered signal to determine properties of the RF field sensed by the vapor cell sensor over the time period.Type: GrantFiled: December 19, 2022Date of Patent: June 20, 2023Assignee: Quantum Valley Ideas LaboratoriesInventors: Stephanie M. Bohaichuk, Donald Booth, Kent Arnold Nickerson, Ching Tai, James P. Shaffer
-
Patent number: 11638768Abstract: An illustrative control system for use with a replaceable ozone generator cartridge for use with an aqueous ozone delivery device, for example, for sanitizing objects, including hands, hands and forearms, feet, other tissue, instruments, or other object sanitizing. One embodiment of the control system calculates and transmits usage data to a memory device of the ozone generator cartridge, and also includes various sensors and drivers for controlling an aqueous ozone concentration. The control system also provides other data logging, error detection, and identity verification of the replaceable ozone generator cartridge.Type: GrantFiled: July 24, 2021Date of Patent: May 2, 2023Inventors: Thomas F. Foust, Christopher Thompson, John Morici, Anthony Casaletto
-
Patent number: 11630131Abstract: Novel electrically-isolated high-voltage sensors are provided which have low power dissipation. The sensors are formed of a circuit comprising first and second portions separated by an electrical isolation boundary with the first portion used for high-voltage, and the second portion for low-voltage. While they are decoupled electrically, they are coupled both optically and magnetically. The first portion comprises an LED which generates an optical signal corresponding to a high-voltage signal across the electrical-isolation boundary. The second portion comprises a photodiode which receives the optical signal emitted from the LED and outputs a corresponding low-voltage electrical signal.Type: GrantFiled: July 14, 2021Date of Patent: April 18, 2023Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Damian P. Urciuoli, Erik S. Schroen
-
Patent number: 11614501Abstract: A gradiometer includes a at least one magnet attached to a beam. The magnet moves in response to a magnetic force. A sensing element is configured to measure movement or deflection of the beam or magnet. The gradiometer is configured to determine a gradient of a magnetic field acting on the first magnet based on movement of the magnet. The gradiometer can further measure higher order gradients.Type: GrantFiled: March 11, 2022Date of Patent: March 28, 2023Assignee: Trustees of Boston UniversityInventors: Joshua Javor, David Bishop, David Campbell, Matthias Imboden
-
Patent number: 11604139Abstract: Real-time multidimensional terahertz imaging system and method, the method comprising method for imaging an object, comprising, in a laser pump line: patterning a laser pump beam with known patterns of a radiation beam and illuminating the object with the radiation beam; yielding a patterned pump beam; directing the patterned beam from the pump line and a laser probe beam from a laser probe line to a detection crystal; single-shot detection of the radiation beam waveform; and correlating the single-shot detection and the known patterns.Type: GrantFiled: October 1, 2020Date of Patent: March 14, 2023Assignee: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Riccardo Piccoli, Luca Razzari, Luca Zanotto, Junliang Dong, Roberto Morandotti
-
Patent number: 11585841Abstract: In a method of atomic electrometry, EIT spectroscopy is performed on host atoms of an alkali metal in a vapor cell. The EIT spectroscopy indicates a resonant energy of a probed Rydberg state of the host atoms. The vapor cell is exposed to an ambient electric field. A shift in the resonant energy as indicated by the EIT spectroscopy is observed and interpreted as a measurement of the ambient field. During the measurement of the ambient field, a bias electric field is generated inside the vapor cell by shining light into the vapor cell from a light source situated outside of the cell. The bias field is useful for increasing the sensitivity of the measurement.Type: GrantFiled: November 19, 2021Date of Patent: February 21, 2023Assignee: National Technology & Engineering Solutions of Sandia, LLCInventor: Yuan-Yu Jau
-
Patent number: 11579167Abstract: A near-field detection system includes include an electric field generator configured to apply an electric field to an analysis sample, a probe configured to detect a near field that has passed through the analysis sample, a current detector connected to the probe, and a laser system irradiating a laser to each of the electric field generator and the probe. The probe includes a cantilever substrate, an antenna electrode on the cantilever substrate, an electromagnetic wave blocking layer exposing a sensing region of the cantilever substrate, the electromagnetic wave blocking layer including a conductive material, and an insulating layer interposed between the cantilever substrate and the electromagnetic wave blocking layer such that the insulating layer is between the antenna electrode and the electromagnetic wave blocking layer.Type: GrantFiled: May 28, 2021Date of Patent: February 14, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Jongmin Yoon, Namil Koo, Nagel Michael, Suhwan Park, Junbum Park, Inkeun Baek, Sion Lee
-
Patent number: 11486906Abstract: The voltage measuring device includes: a light source; a polarizer polarizing light emitted from the light source; a grounded conductor provided apart from a high-voltage conductor; a crystal end face electrode being out of contact with the grounded conductor and the high-voltage conductor; a Pockels cell transmitting light from the polarizer; an analyzer transmitting light reflected by the Pockels cell; a photodetector detecting light emitted from the analyzer; an intra-crystal electric field measurement unit converting voltage output by the photodetector into intra-crystal electric field; a bias electrode being out of contact with the crystal end face electrode; a bias supply; a bias supply control unit controlling the bias supply to keep internal electric field of the Pockels cell at zero; and a measurement voltage calculation unit obtaining voltage of the high-voltage conductor based on results output by the intra-crystal electric field measurement unit and the bias supply control unit.Type: GrantFiled: January 24, 2019Date of Patent: November 1, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yasutomo Otake, Takahiro Umemoto, Yasuhito Hashiba, Hiroyuki Kawano, Daigo Matsumoto
-
Patent number: 11474141Abstract: Methods and apparatuses for using the impedance inhomogeneity pattern (IIP) of a transmission line, or one or more segments thereof, to verify the identity of the transmission line and/or detect whether or not the transmission line has been altered or tampered with. Because the impedance inhomogeneity pattern of a transmission line is unique, unpredictable, and uncontrollable, it can be used as a physical unclonable function (PUF). The IIP can be obtained by a method such as frequency domain reflectometry or time domain reflectometry, and is then compared with a previously stored intrinsic IIP obtained from a transmission line (or segment(s)) prior to first use through the use of, for example, correlation or coherence functions. The method can be used on any transmission line, including electrical, optical and acoustic transmission lines.Type: GrantFiled: February 6, 2020Date of Patent: October 18, 2022Assignees: University of Rhode Island Board of Trustees, The Curators of the University of MissouriInventors: Tao Wei, Jie Huang
-
Patent number: 11435386Abstract: A SI-traceable Rydberg atom radiofrequency power meter determines power of reference radiofrequency radiation and includes: a reference radiofrequency source that provides reference radiofrequency radiation; a vapor cell including: a pair of parallel-plate waveguides; a vapor cell wall including parallel opposing faces of the parallel-plate waveguides; and the vapor space physically bounded by the vapor cell wall to contain gas atoms in an optical overlap volume; and a transmission detector that receives the output light from the vapor cell and produces a transmission signal from the transmission detector for determination of power of the reference radiofrequency radiation, wherein the SI-traceable Rydberg atom radiofrequency power meter determines power of the reference radiofrequency radiation by electromagnetically induced transparency of the gas atoms in a Rydberg electronic state, the determination of power being traceable to the International System of Units (SI).Type: GrantFiled: March 13, 2020Date of Patent: September 6, 2022Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCEInventors: Christopher Lee Holloway, Joshua Ari Gordon, Matthew Thomas Simons, Thomas Crowley
-
Patent number: 11378594Abstract: A capacitive voltage sensor that has particular application to be molded into an insulating body of a switch. The voltage sensor includes an annular electrode assembly having a grounded electrode including an inner ring and an outer ring defining a space therebetween, and a sensing electrode positioned in the space and being substantially surrounded by the inner and outer rings. The body is formed around the electrode assembly and a cylindrical center conductor extends through the electrode assembly. Capacitive coupling is provided between the sensing electrode and the center conductor by one or more openings in the inner ring, such as a single round hole, a slot or a plurality of symmetrically disposed round holes or slots. The inner and outer rings can be attached at one end so that the grounded electrode is a single piece or the rings can be separate rings electrically coupled together by conductive screws.Type: GrantFiled: December 5, 2019Date of Patent: July 5, 2022Assignee: S&C Electric CompanyInventor: Goran Djogo
-
Patent number: 11371843Abstract: Aspects of the present disclosure are directed to monolithically integrating an optical gyroscope fabricated on a planar silicon platform as a photonic integrated circuit with a MEMS accelerometer on the same die. The accelerometer can be controlled by electronic circuitry that controls the optical gyroscope. Gaps may be introduced between adjacent waveguide turns to reduce cross-talk and improve sensitivity and packing density of the optical gyroscope.Type: GrantFiled: July 1, 2021Date of Patent: June 28, 2022Assignee: Anello Photonics, Inc.Inventors: Avi Feshali, Mike Horton
-
Patent number: 11372027Abstract: A Rogowski coil is used for determining the magnitude of the electrical current of a conductor of a low-voltage AC circuit, which outputs an analogue voltage which is equivalent to the magnitude of the electrical current of the conductor. The Rogowski coil is connected to an analogue integrator, which is followed by an analogue-digital converter, which converts the integrated analogue voltage into a digital signal which is further processed by a microprocessor in such a way that the phase shift generated by the Rogowski coil and the components connected downstream of the Rogowski coil is compensated such that there are in-phase current values for the detection of error situations in order to protect the low-voltage AC circuit, in particular for a low-voltage power switch or an arc fault detection unit.Type: GrantFiled: September 27, 2018Date of Patent: June 28, 2022Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Joerg Meyer, Peter Schegner, Karsten Wenzlaff
-
Patent number: 11221232Abstract: A device, a method, and a non-transitory storage medium are described in which a meter installation and billing verification service is described. The meter installation service includes validating configuration data pertaining to a water meter to be installed based on certified configuration data. The certified configuration data includes the number of dials, the placement of the decimal, and the unit of measure. The certified configuration data may also include a meter size and a lay length. The billing verification service includes validating configuration data based on certified configuration data to ensure proper billing.Type: GrantFiled: October 2, 2019Date of Patent: January 11, 2022Assignee: Neptune Technology Group Inc.Inventors: Brendan Peat, James Szendel
-
Patent number: 11199495Abstract: The invention relates to a terahertz full polarization state detection spectrometer, which comprises a terahertz wave generator, a polarizer, a polarization splitter, a horizontal terahertz detector and a vertical terahertz detector. The terahertz wave generator generates a terahertz wave and the polarizer optimizes the terahertz wave for purity. The sample to be detected modulates the terahertz wave after purity optimization to obtain the terahertz modulated wave. The terahertz modulated wave is decomposed by the polarization splitter into a horizontal terahertz wave and a vertical terahertz wave whose polarization states are perpendicular to each other. The two terahertz waves are detected by two corresponding terahertz detectors respectively. According to the detected result, the characteristic of the sample is analyzed.Type: GrantFiled: December 15, 2016Date of Patent: December 14, 2021Assignees: Shenzhen Institute of Terahertz Technology and Innovation Co., Ltd., Shenzhen Institute of Terahertz Technology and InnovationInventors: Qing Ding, Yi Pan, Shichang Peng
-
Patent number: 11193958Abstract: A sensor for detecting voltage of a power cable includes a housing configured to be coupled around at least a portion of the power cable. A first conductive element supported by the housing is configured to be electrically coupled to the power cable when the housing is coupled around at least a portion of the power cable. A first capacitive element supported by the housing is electrically interconnected with the first conductive element. A second capacitive element supported by the housing is electrically interconnected with the first conductive element. A processor determines a cable capacitance of the power cable based upon alternatively sensing an electrical characteristic (i) the first capacitive element and the second capacitive element and (ii) the first capacitive element without the second capacitive element. The sensor determines the voltage of the power cable based upon the determined cable capacitance.Type: GrantFiled: October 19, 2017Date of Patent: December 7, 2021Assignee: Veris Industries, LLCInventors: Randall Brant Elliott, Mark Steven Taft
-
Patent number: 11133143Abstract: A two-wire current loop system includes a current loop with a transmitter and a host. The system also includes a monolithic integrated circuit included with the transmitter. The monolithic integrated circuit includes: 1) a power supply terminal coupled to the current loop; 2) a loop ground terminal coupled to the current loop and configured to output a current to the current loop; 3) device circuitry with a power supply node and an internal ground node, wherein the power supply node is coupled to the power supply terminal; and 4) a reverse wiring protection circuit coupled between the internal ground node of the device circuitry and the loop ground terminal.Type: GrantFiled: September 27, 2019Date of Patent: September 28, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Masahiro Yoshioka, Muhammad Yusuf Ali, Kevin Ryan Duke
-
Patent number: 11084128Abstract: A wavelength conversion member manufacturing method includes providing a wavelength conversion member having an upper surface, and forming, in the wavelength conversion member, at least one depressed portion having an inclined surface inclined with respect to the upper surface by irradiating the wavelength conversion member with a pulsed laser beam from above. The forming of the at least one depressed portion includes performing a set of scanning more than once at different processing depths in regions overlapping each other in a top view, the set of scanning includes performing scanning with the pulsed laser beam along a first direction more than once at irradiation positions shifted in a second direction perpendicular to the first direction in the top view, and the performing of the scanning includes applying the pulsed laser beam at a fixed processing depth.Type: GrantFiled: July 13, 2017Date of Patent: August 10, 2021Assignee: NICHIA CORPORATIONInventors: Naoki Eboshi, Hiroaki Yuto
-
Patent number: 11057256Abstract: A receiver-implemented method is for measuring a periodically modulated signal. The method includes applying a received periodically modulated signal to a mixer of a receiver, the periodically modulated signal not synchronized with the receiver, and tuning a local oscillator (LO) of the mixer using an estimate of actual carrier frequency and an estimate of an arbitrary waveform generator (AWG) sampling rate to obtain a digitized intermediate frequency (IF) signal. The method further includes applying a short time Fourier transform (STFT) to the digitized IF signal, extracting a carrier frequency offset and a AWG sampling rate offset based on the applied STFT, compensating for the carrier frequency offset, and applying a digital correction to the STFT to compensate for the AWG sampling rate offset. Compensating for the carrier frequency offset may include retuning the LO to obtain a new digitized IF signal to which the digital correction is applied.Type: GrantFiled: October 5, 2020Date of Patent: July 6, 2021Assignee: Keysight Technologies, IncInventors: Jan Verspecht, Troels Studsgaard Nielsen
-
Patent number: 10911142Abstract: 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: GrantFiled: February 25, 2019Date of Patent: February 2, 2021Assignee: Phase Sensitive Innovations, Inc.Inventors: Janusz Murakowski, Chris Schuetz, Garrett Schneider, Shouyuan Shi
-
Patent number: 10897309Abstract: 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: GrantFiled: June 4, 2019Date of Patent: January 19, 2021Assignee: Phase Sensitive Innovations, Inc.Inventors: Janusz Murakowski, Christopher Schuetz, Garrett Schneider, Shouyuan Shi
-
Patent number: 10823987Abstract: An electro-optic device may include a Mach-Zehnder modulator (MZM) and one or more components. The one or more components may apply a DC bias with dither to a first branch and a second branch of the MZM and to arms of the first branch, and may determine a second harmonic of a first return signal. The one or more components may apply a DC bias with phase-shifted dither to the first branch and the second branch or to the arms of the first branch, and determine a second harmonic of a second return signal. The phase-shifted dither may be out of phase from the dither and have a frequency that matches a frequency of the dither. The one or more components may determine whether arms of the second branch of the MZM are operating at null, and may selectively adjust DC biases applied to the arms of the second branch.Type: GrantFiled: June 24, 2019Date of Patent: November 3, 2020Assignee: Lumentum Operations LLCInventors: Dan Burke, Fredrik Sy, Josh Kemp
-
Patent number: 10802084Abstract: The open-phase condition of a standby power transformer is detected by monitoring functions of the phase currents. The functions have parameters calculated based on reference currents, which constitute a “fingerprint” when all the phases are connected.Type: GrantFiled: June 16, 2016Date of Patent: October 13, 2020Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventor: James Blake
-
Patent number: 10802066Abstract: In a general aspect, an imaging method is presented that includes receiving, at a vapor-cell sensor, input optical signals and electromagnetic radiation from at least a test device to generate an output optical signal. The output optical signal is processed at a single pixel camera to generate camera output data. An image of the electromagnetic radiation is constructed by operation of a computer system based on the camera output data. In some implementations, the single pixel camera includes a patterned light generator and a photodetector. In these implementations, the imaging method includes receiving, at the photodetector, patterned instances of the output optical signal generated by the patterned light generator. Each patterned instance represents a respective portion of the image of the electromagnetic radiation. Moreover, the intensity of each patterned instance may be measured, by operation of at least the photodetector, to generate the camera output data.Type: GrantFiled: December 17, 2019Date of Patent: October 13, 2020Assignee: Quantum Valley Ideas LaboratoriesInventors: James Keaveney, Jennifer Ann Joe Erskine, Chang Liu, Geoffrey Gordon Gillett, James P. Shaffer
-
Patent number: 10724921Abstract: Provided is an optical cable monitoring system for monitoring a health of optical cables including plural optical fibers. The system includes an optical power detector including a light power monitor, a failure determination unit and an alert signal generator, the light power monitor measuring light intensity of an extracted portion of communication light transmitted through each optical fiber and obtaining communication light intensity based on the measured light intensity, the failure determination unit determining presence of failure in each optical fiber based on the measurement result of the light power monitor, and the alert signal generator generating an alert signal when failure is determined to occur by the failure determination unit, and a monitoring device that receives an alert signal from the optical power detector.Type: GrantFiled: October 1, 2018Date of Patent: July 28, 2020Assignee: HITACHI METALS, LTD.Inventors: Yoshihiro Nakatani, Wataru Ohnuki, Kanako Suzuki
-
Patent number: 10663494Abstract: An optical voltage sensor assembly includes an input fiber-optic collimator positioned and configured to collimate input light beam from a light source. A crystal material is positioned to receive the input light beam from the light source and configured to exhibit the Pockels effect when an electric field is applied through the crystal material. An output fiber-optic collimator is positioned to receive an output light beam from the crystal material and configured to focus the output light beam from the crystal onto a detector. Methods of using the optical voltage sensor assembly are also disclosed.Type: GrantFiled: May 16, 2019Date of Patent: May 26, 2020Assignee: Micatu, Inc.Inventors: Atul Pradhan, Michael Oshetski, Scott Stelick, Joshua Andrew Sperrick, William Laratta
-
Patent number: 10649019Abstract: A system and a method for determining local electric field strengths, the system including: a light source module configured to emit light; a plurality of electric field sensors, each sensor including a light input portion and a light output portion, each sensor including an electro-optic material arranged in a path of at least some of the received light, an optical property of the electro-optic material being variable depending on a local electric field strength at the sensor, and the electro-optic material being arranged in the sensor such that a property of the output light varies depending on the local electric field strength; a light detection module arranged to receive the output light from the sensors; and a processing module in communication with the light detection module, the processing module being programmed to determine a corresponding value for the electric field strength local to each of the sensors.Type: GrantFiled: September 1, 2017Date of Patent: May 12, 2020Assignee: X Development LLCInventors: Martin Friedrich Schubert, Michael Jason Grundmann
-
Patent number: 10638565Abstract: Examples of the present disclosure are related to systems and methods for voltage interfaces between legacy control systems and light sources. An example voltage interface may include a control loop including a first op-amp, an output loop including a second op-amp, and an optical isolator configured to electrically isolate the control loop from the output loop, the optical isolator being configured to receive an input signal from the control loop and transmit an output signal to the output loop.Type: GrantFiled: December 4, 2018Date of Patent: April 28, 2020Assignee: Fluence Bioengineering, Inc.Inventor: Paul Morgenstern
-
Patent number: 10613130Abstract: A voltage detection system for detecting a stray voltage in pool water within a pool caused by an electrical fixture integral with a pool wall of the pool. The system comprises a pair of elongate conductive elements, with one of the elongate conductive elements having a detector electrode end and a terminal end, and with the other elongate conductive element having a reference electrode end and a terminal end. The detector electrode end is positioned adjacent to the electrical fixture and the reference electrode end is positioned on an opposite side of the pool and preferably a maximum distance from the detector electrode end. And, the terminal ends are connected to a microprocessor for determining if a voltage between the detector electrode end and reference electrode end is greater than a predetermined threshold voltage.Type: GrantFiled: January 23, 2018Date of Patent: April 7, 2020Inventors: Natalie Forood, Walter Maclay, Rolf Wendt
-
Patent number: 10600628Abstract: A system for conveying a time-varying voltage signal from a first subsystem to a second subsystem, and for monitoring and controlling the time-varying voltage signal, comprises a transmission line having a first end and a second end, extending from the first end at the first subsystem to the second end at the second subsystem. The transmission line is configured to be un-terminated, and have an electrical length substantially equal to a multiple of one half wavelength of the time-varying voltage signal. The system may further comprise an adaptive control configured to couple the time-varying voltage signal to the first end, and adjust a generator of the time-varying voltage signal based on a sampling of the time-varying voltage signal at the first end, and at least one transformer at the second subsystem electrically coupled to the second end and configured to increase an amplitude of the time-varying voltage signal.Type: GrantFiled: November 15, 2018Date of Patent: March 24, 2020Assignee: MKS Instruments, Inc.Inventor: William Roger Fletcher
-
Patent number: 10578659Abstract: A fault detection system of a utility meter for measuring electrical energy consumed by a load includes at least one current transformer, a temperature sensor, and a processor. The at least one current transformer is configured to generate a current measurement signal based on a current provided to the load. The temperature sensor is configured to generate a temperature signal based on a detected temperature of the utility meter. The processor is operably connected to the at least one current transformer and to the temperature sensor. The processor is configured to generate a phase angle value corresponding to a phase angle of the current measurement signal. The processor is further configured to generate a fault signal responsive to the temperature signal indicating that the detected temperature is greater than a predetermined temperature value and the phase angle value indicating detection of a leading current.Type: GrantFiled: November 27, 2017Date of Patent: March 3, 2020Assignee: Landis+Gyr LLCInventors: Matthew Eric Kraus, Detlef Griessman
-
Patent number: 10557880Abstract: An electro-optic (EO) sensor and a method for detecting a local electric field strength, the EO sensor including: a first optical cavity; a gain medium within the first optical cavity; a mode locking element within the first optical cavity; and an EO material within the first optical cavity, an effective optical path length of the EO material being variable depending on the local electric field strength at the EO sensor, wherein the gain medium, the mode locking element, and the EO material are arranged in a common path of light within the first optical cavity, and wherein during operation, the EO sensor emits pulses of light at a repetition rate characteristic of an effective optical path length of the light within the first optical cavity, the effective optical path length varying depending on the electric field strength local to the EO sensor.Type: GrantFiled: September 1, 2017Date of Patent: February 11, 2020Assignee: X Development LLCInventors: Martin Friedrich Schubert, Michael Jason Grundmann
-
Patent number: 10466274Abstract: An arrangement for a spatially resolved determination of the specific electrical resistance and/or of the specific electrical conductivity of a sample at different positions, in which a plurality of detectors are configured for a spatially resolved spectral analysis of electromagnetic radiation within a wavelength interval and is incident onto the detectors. A radiation onto a surface takes place with homogeneous intensity.Type: GrantFiled: March 2, 2016Date of Patent: November 5, 2019Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Philipp Wollmann, Wulf Graehlert, Eric Weissenborn
-
Patent number: 10466278Abstract: It is proposed to use a spun birefringent fiber for a current sensor or magnetic field sensor. The fiber has a birefringence that increases with temperature. In this case, the temperature dependence of the fiber's sensitivity to magnetic fields counteracts the temperature dependence of the fiber's Verdet constant, which allows to design current and field sensors that have reduced temperature dependence.Type: GrantFiled: July 14, 2017Date of Patent: November 5, 2019Assignee: ABB Schweiz AGInventors: Georg Müller, Klaus Bohnert, Andreas Frank, Yang Lin
-
Patent number: 10461882Abstract: An optical network unit (ONU) for optical transmission in a burst mode includes an electro-absorption modulated laser (EML) transmitter including a laser diode (LD) and configured to transmit an uplink optical signal through the LD, an electro-absorption modulator (EAM) driver integrated circuit (IC) (EAM driver IC) configured to amplify an uplink data signal and provide the amplified data signal to the EML transmitter, an LD burst-mode driving circuit configured to control an operation of turning on or off the LD based on a burst-enable signal, and a media access control (MAC) configured to transmit the data signal to the EAM driver IC and transmit the burst-enable signal to the LD burst-mode driving circuit.Type: GrantFiled: November 29, 2018Date of Patent: October 29, 2019Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Han Hyub Lee, Hwan Seok Chung
-
Patent number: 10424911Abstract: A device for detecting and potentially eradicating a leakage voltage from a water body comprises at least one wire sensor probe to receive the leakage voltage in the water body. The device comprises a voltage sensing circuit operable for receive the leakage voltage, and generate a voltage signal based on the leakage voltage. The device comprises a trigger circuit to receive the voltage signal, based on magnitude of the voltage signal being greater than a predefined threshold value. The trigger circuit activates an alarm circuit, and activates a circuit breaker. The circuit breaker, in response to activation of the circuit breaker, disconnects a power supply from the at least one voltage source immersed in the water body, thereby eradicating the leakage current from the water body if the leakage voltage is caused by the activated circuit breaker.Type: GrantFiled: March 27, 2017Date of Patent: September 24, 2019Inventors: Donald A. McTighe, Jr., Dwight G. Shepard
-
Patent number: 10422815Abstract: A scanning head of a scanning probe microscope includes a scanning head frame having a first end portion and a second end portion which are oppositely disposed, the first end portion and the second end portion defining a first receiving space and a second receiving space, respectively; a sample table located in the first receiving space; a scanning module located in the second receiving space; and a plurality of fixed electrodes fixed on the second end portion of the scanning head frame. Signal lines of the scanning head of the present invention do not fall off or tear off during operation. In addition, the scanning head allows a laser to be incident on its scanning probe, enabling the scanning probe to be coupled with the laser, so that the range of application is wide.Type: GrantFiled: August 14, 2018Date of Patent: September 24, 2019Assignee: INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCESInventors: Qing Huan, Zebin Wu, Hongjun Gao
-
Patent number: 10416198Abstract: The invention relates to an assembly of a gas-tight compartment and an optical voltage sensor that further comprises a module. The module comprises an electro-optic crystal and electrodes, wherein the electro-optic crystal is the only element of the module to mechanically connect the two electrodes and to bridge the potentials of the two electrodes. The assembly is particuarly suited to measure direct current voltages.Type: GrantFiled: September 19, 2017Date of Patent: September 17, 2019Assignee: ABB Schweiz AGInventors: Sergio Vincenzo Marchese, Xun Gu, Burak Büyükkavir, Klaus Bohnert, Tobias Erford
-
Patent number: 10378964Abstract: In a waveform measurement method, first, initial pulsed light is spatially dispersed for respective wavelengths. Next, the initial pulsed light is input to a polarization dependent type SLM in a state where a polarization plane is inclined with respect to a modulation axis direction, and a phase spectrum of a first polarization component of the initial pulsed light along the modulation axis direction is modulated, to cause a time difference between first pulsed light Lp1 including the first polarization component and second pulsed light Lp2 including a second polarization component orthogonal to the first polarization component. After combining the wavelength components, an object is irradiated with the pulsed light Lp1 and the pulsed light Lp2, and light generated in the object is detected. The above detection operation is performed while changing the time difference, and a temporal waveform of the pulsed light Lp1 is obtained.Type: GrantFiled: March 15, 2017Date of Patent: August 13, 2019Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Koji Takahashi, Haruyasu Ito, Koyo Watanabe
-
Patent number: 10370458Abstract: The disclosure relates to compositions comprising isolated mitochondria or combined mitochondrial agents, and methods of treating disorders using such compositions.Type: GrantFiled: November 3, 2017Date of Patent: August 6, 2019Assignees: Children's Medical Center Corporation and Beth Israel, Deaconess Medical Center, Inc.Inventors: James D. McCully, Sidney Levitsky, Douglas B. Cowan, Pedro J. del Nido, Sitaram M. Emani
-
Patent number: 10346977Abstract: Provided is an operating method of a medical imaging device. The method includes receiving a 3D medical image, generating a 2D medical image from the 3D medical image based in a plate interpolation, and displaying the 2D medical image by using plate interpolation based weight information and interest region information.Type: GrantFiled: July 27, 2017Date of Patent: July 9, 2019Assignee: ELECTRONICS & TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seung-Hoon Chae, Jang Hwan Choi, Ji Wook Jeong, Sooyeul Lee
-
Patent number: 10313012Abstract: 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: GrantFiled: April 18, 2018Date of Patent: June 4, 2019Assignee: Phase Sensitive Innovations, Inc.Inventors: Janusz Murakowski, Christopher Schuetz, Garrett Schneider, Shouyuan Shi
-
Patent number: 10305423Abstract: 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: GrantFiled: May 14, 2012Date of Patent: May 28, 2019Assignee: TUV Rheinland (Shanghai) Co., LTD.Inventors: Christos Monokroussos, Damien Etienne
-
Patent number: 10263759Abstract: 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: GrantFiled: April 26, 2017Date of Patent: April 16, 2019Assignee: Cavium, LLCInventors: Lu Wang, Scott E. Meninger
-
Patent number: 10255781Abstract: 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: GrantFiled: November 1, 2017Date of Patent: April 9, 2019Assignee: BRIAN AND NEAL'S BIG ADVENTURE, LLCInventors: Aaron Neal Branstetter, Brian Byrd
-
Patent number: 10218438Abstract: 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: GrantFiled: June 15, 2018Date of Patent: February 26, 2019Assignee: Phase Sensitive Innovations, Inc.Inventors: Janusz Murakowski, Chris Schuetz, Garrett Schneider, Shouyuan Shi
-
Patent number: 10215694Abstract: 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: GrantFiled: November 1, 2017Date of Patent: February 26, 2019Assignee: Wright State UniversityInventor: Elliott R Brown