Thermal (e.g., Compensation) Patents (Class 324/105)
  • Patent number: 11088399
    Abstract: The invention relates to a current sensor comprising an electric conductor (10), through which a first current (I) can flow parallel to a first direction (R1) and which comprises three regions (21, 22, 23) immediately following on from each other in the first direction (R1). A middle region (22) of the three regions (21, 22, 23) comprises a conductor cross-sectional area that is smaller than a conductor cross-sectional area of each of the two outer regions (21, 23) of the three regions (21, 22, 23). A voltage sensor of the current sensor is designed to measure a first voltage between the two terminals (41, 42) thereof. The first voltage is the same as a voltage applied to a measuring region (22, 25) at least partially coinciding with the middle region (22).
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: August 10, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Ruehle, Chrysanthos Tzivanopoulos, Eduard Reimer, Karsten Thoelmann, Kuen Cheuk Leung, Lisa Lorenz, Patrick Kaupp, Sven Bergmann
  • Patent number: 11035887
    Abstract: A current sensor device for measuring a current of at least 30 Amps, comprising: a leadframe with a electrical conductor having a centerline; a substrate mounted to the electrical conductor and comprising a first and a second magnetic sensor configured for providing a first and second value; and a processing circuit for determining the current based on a difference or weighted difference between the first and second value. The first and second magnetic sensor are arranged asymmetrically with respect to the centerline.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: June 15, 2021
    Assignee: MELEXIS TECHNOLOGIES SA
    Inventors: Javier Bilbao De Mendizabal, Simon Houis
  • Patent number: 10955491
    Abstract: A method determines temperature information associated with a current coil connection in a meter. The method includes conveying heat from a current coil connection to a location proximate a winding disposed about a core. The core includes an opening through which a current carrying coil is disposed, the current carrying coil carrying current measured by the meter. The method also includes measuring a resistance of the winding disposed about a core, wherein the winding has a resistance that varies as a function of temperature. The method includes determining a temperature value based on the measured resistance and storing or communicating the determined temperature value.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 23, 2021
    Assignee: Landis+Gyr, Inc.
    Inventor: John T. Voisine
  • Patent number: 10920310
    Abstract: Reactive sputter deposition method and system are disclosed, in which a catalyst gas, such as water vapor, is used to increase the overall deposition rate substantially without compromising formation of a dielectric compound layer and its optical transmission. Addition to the sputtering or reactive gas of the catalyst gas can result in an increase of a deposition rate of the dielectric oxide film substantially without increasing an optical absorption of the film.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: February 16, 2021
    Assignee: VIAVI Solutions Inc.
    Inventor: Georg J. Ockenfuss
  • Patent number: 10871527
    Abstract: A connector system includes a connector for connecting a first conductor in electrical communication with a second conductor, and a sensor supported adjacent the connector. The sensor is in electrical communication with the first conductor and in electrical communication with the second conductor. The sensor detects a characteristic of the connection between the first conductor and the second conductor.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: December 22, 2020
    Assignee: Hubbell Incorporated
    Inventors: Seydou Diop, Adrian Beau Candelaria
  • Patent number: 10680633
    Abstract: This disclosure describes techniques to perform analog signal conditioning (including filtering and amplification) and analog-to-digital conversion (ADC) on a System-in-package (SIP) assembly technology. In particular, the disclosure combines a programmable gain amplifier (PGA), one or more filter circuits, and an ADC circuit onto the same SIP. These devices are coupled together on the SIP using high-accuracy and precise integrated-passive components. The SIP receives an analog signal, amplifies the analog signal with the PGA on the SIP, filters the amplified analog signal with the filter circuit(s) on the SIP, and then performs analog-to-digital conversion on the filtered amplified analog signal with the ADC circuit on the SIP, The SIP can be configured for various applications based on a variety of inputs and control mechanisms.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 9, 2020
    Assignee: Analog Devices International Unlimited Compnay
    Inventors: John P. Healy, Michael Hennessy, Naiqian Ren, Patrick Martin McGuinness, Robert A. Bombara
  • Patent number: 10648381
    Abstract: A particulate matter detecting device includes: an element unit on which particulate matter contained in exhaust gas from an internal combustion engine is deposited; a heater that heats the element unit; a detecting unit that detects the amount of particulate matter on the basis of electrical characteristics of the element unit; and a control unit that controls the operation of the heater. For a predetermined period that does not include a period in which the particulate matter is deposited on the element unit, the control unit operates the heater using a predetermined amount of control set in advance such that the temperature of the element unit is higher than the temperature of the exhaust gas and lower than a predetermined temperature at which the element unit is thermally degraded.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 12, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masayuki Tamura, Takashi Araki, Masahiro Yamamoto, Go Miyagawa, Manabu Yoshidome, Masato Katsuno, Toshihiro Sakawa
  • Patent number: 10581413
    Abstract: A device for adjusting a signal to a thermally sensitive bridge circuit that may have an impedance coupled to the bridge circuit and an impedance circuit also coupled to the bridge circuit. The impedance circuit may incorporate an amplifier having a non-inverting input coupled to the bridge circuit, a signal adjusting circuit coupled to the output terminal of the amplifier and to the bridge circuit, and an amplifier circuit coupled to the output of the amplifier. The signal adjusting circuit may include a unidirectional current flow mechanism such as a diode.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 3, 2020
    Assignee: Honeywell International Inc.
    Inventor: John K. Tillotson
  • Patent number: 10554121
    Abstract: A switching power converter is disclosed that communicates a thermal alarm to a mobile device over a data channel in a data cable for charging the mobile device.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: February 4, 2020
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Yong Li, Scott Brown, Mengfei Liu, Yimin Chen
  • Patent number: 10451770
    Abstract: The present invention is related to a method for detecting and/or measuring atmospheric accretion on a suspended electrical cable span (2) of overhead power lines, said suspended electrical cable span (2) having a sag (D) and a local tension (H), and being submitted to wind pressure (wwind), comprising the steps of independently: measuring said sag (D), and optionally measuring the wind pressure (wwind), over a first time range, measuring the local tension (H) over a second time range, the results of both steps being complemented and/or combined, so that to allow atmospheric accretion detection and/or measurement.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: October 22, 2019
    Assignee: Ampacimon S.A.
    Inventor: Bertrand Godard
  • Patent number: 10073122
    Abstract: A measuring transducer for converting an analog electrical input signal into an analog electrical output signal. The measuring transducer contains a detection apparatus for detecting an analog electrical input signal within a predetermined input measurement range, wherein the input measurement range of the measuring transducer is divided into n adjustable partial input measurement ranges and the output range of the measuring transducer is divided into n adjustable partial output ranges, where n is greater than 1. Further, an apparatus is provided for recognizing the partial input measurement range in which the detected analog electrical input signal lies. An imaging apparatus maps each partial input measurement range to a separate partial output measurement range of the n partial output measurement ranges. Another apparatus converts the detected analog electrical input signal into the associated analog electrical output signal depending on the recognized partial input measurement range.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 11, 2018
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventor: Florian Bergmann
  • Patent number: 9936567
    Abstract: An LED illumination system includes a plurality of LED lamps. Each of the LED lamps includes: an LED array including one or more LED elements that interoperate with input power and emit light; a power management unit that controls supplied power so that power is input to the LED array; a control unit that controls the power management unit to control an operation of the LED array in response to a signal input set by a user through a user terminal; and a wireless communication module that transmits a received wireless communication signal to the control unit and transmits information received from the control unit in the form of a wireless communication signal.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: April 3, 2018
    Assignee: SAMJIN LND CO., LTD.
    Inventor: Eunseok Seo
  • Patent number: 9818554
    Abstract: A switch-operation-determining device provided with a determination circuit for determining whether a switch has been operated, wherein the determination circuit is provided with: a first resistor, a first diode, and a second diode serially connected in the stated order from the power-source side, such that current flows from the power source toward a ground; and a control unit for comparing the anode potential of the first diode and a threshold potential, and determining that the switch has been operated when the anode potential of the first diode is lower. Of the first diode and the second diode, it is the second diode that is connected in parallel with the switch.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: November 14, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yosuke Tsuchiya, Akihiko Yamashita
  • Patent number: 9678172
    Abstract: Embodiments relate to current difference sensors, systems and methods. In an embodiment, a current difference sensor includes first and second conductors arranged relative to one another such that when a first current flows through the first conductor and a second current, equal to the first current, flows through the second conductor, a first magnetic field induced in the first conductor and a second magnetic field induced in the second conductor cancel each other at a first position and a second position; and first and second magnetic field sensing elements arranged at the first and second positions, respectively.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: June 13, 2017
    Assignee: Infineon Technologies AG
    Inventors: Udo Ausserlechner, Berthold Astegher
  • Patent number: 9671437
    Abstract: An overcurrent detection circuit includes a current detection resistor that generates a voltage in proportion to current flowing through a switching element and a comparator that compares the voltage detected via the current detection resistor and a reference voltage generated by a reference voltage generation circuit to thereby detect overcurrent flowing through the switching element. In particular, the reference voltage generation circuit includes: a first resistance voltage dividing circuit that resistance-divides a standard voltage by connecting, in series, two types of resistors having different temperature characteristics; a second resistance voltage dividing circuit that resistance-divides the standard voltage by connecting, in series, resistors having the same temperature characteristics; and an instrumentation amplifier that generates the reference voltage according to the difference between the divided output voltages of the first and second resistance voltage dividing circuits.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 6, 2017
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Masashi Akahane
  • Patent number: 9608558
    Abstract: Systems and techniques are described for monitoring the operating temperature of one or more circuit elements, such as a metal oxide field effect transistor (MOSFET) switch, where the circuit element is used to control at least one phase of an electric motor. The systems and techniques may calculate temperature by determining at least two electrical signals from the circuit element taken at least two different times. This results in an accurate temperature calculation without requiring precise knowledge of the particular characteristics of each respective circuit element.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies AG
    Inventors: Christian Heiling, Matthias Bogus
  • Patent number: 9599556
    Abstract: A gas sensing system includes a signal generator including a wavelength tunable laser, the signal generator providing a first periodic signal and a second periodic signal, wherein the first periodic signal comprises a wavelength scanning signal and the second periodic signal comprises a modulation signal; an optical signal absorption path which is wavelength selective, wherein the generated signal covers at least one of the absorbance band; a signal detector that uses lock-in detection to detect a second harmonic of the second periodic signal after absorption, the signal detector further including a local reference generator, a multiplier, and a low pass filter; a local reference includes a first path (ref1) that outputs sinusoidal signal with frequency equals to that of the second signal in signal generator, and a second path (ref2) that outputs sinusoidal signal of two times ref1 frequency; and a local reference generator having a first phase shifter that is configurable from 0 to 2? and a second phase shif
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: March 21, 2017
    Assignee: NEC Corporation
    Inventors: Junqiang Hu, Ting Wang
  • Patent number: 9515592
    Abstract: Some embodiments relate to a controlled field alternator where the alternator is wired in a low wye configuration (coils wired in series or parallel). The first sensor measures the direct current flowing through the field within the alternator to detect an excitation level of a field within the alternator. As examples, the first sensor may measure field voltage, magnetic field intensity, magnetic flux density, current to the field of a rotating exciter, voltage to the field of a rotating exciter and the duty cycle of a pulse width modulated signal that controls an on-board rectifier for a permanent magnet exciter. Embodiments are also contemplated where the second sensor measures the RMS output voltage of the alternator to determine the output characteristic of the alternator.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: December 6, 2016
    Assignee: Kohler Co.
    Inventor: Isaac S. Frampton
  • Patent number: 9377489
    Abstract: A system includes a light source configured to generate a source of light, a fiber optic current sensor (FOCS) configured to detect the source of light, and a decoding circuitry communicatively coupled to the FOCS. The system also includes a health monitoring circuitry communicatively coupled to the decoding circuitry. The health monitoring circuitry is configured to receive a first electrical characteristic component of the first signal and a corresponding second electrical characteristic component of the second signal, to generate a summation of the first electrical characteristic component of first signal and the second electrical characteristic component of the second signal, and to generate an output signal based at least in part on the summation of the first electrical characteristic component and the second electrical characteristic component. The output signal includes an indication of an operational condition of the light source.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: June 28, 2016
    Assignee: General Electric Company
    Inventors: Daniel Robert Wallace, Paul Edward Marken
  • Patent number: 9372207
    Abstract: A current measurement and voltage measurement transducer for power measurements has an upper split core attached to an upper housing and a lower split core attached to a lower housing. The upper housing and lower housing have a common hinge surface and engaging surfaces for maintaining closure and providing a magnetic circuit which surrounds a conductor placed inside the transducer, and the magnetic circuit is coupled to windings around the split core, thereby providing a measurement of current. The housings also provide one or more piercing pins which penetrate the insulation of the conductor and provide a voltage measurement.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: June 21, 2016
    Assignee: EKM Metering, Inc.
    Inventors: Douglas Brouwer, Jameson Brouwer, Adam Brouwer
  • Patent number: 9255946
    Abstract: The invention relates to an electronic component (1), in particular a current sensor, having a resistance element (5) made of a resistance material, a first connection part (3) made of a conductor material for introducing an electrical current into the resistance element (5), and a second connection part (4) made of a conductor material for discharging the electrical current from the resistance element (5). According to the invention, the component (1) has a temperature-measuring device (8) for measuring a temperature difference between the resistance element (5), on the one hand, and at least one of the two connection parts (3, 4), on the other hand, in order to derive the current from the temperature difference.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: February 9, 2016
    Assignee: Isabellenhuette Heusler GmbH & Co. KG
    Inventor: Ullrich Hetzler
  • Patent number: 9024618
    Abstract: An apparatus and method for verifying the temperature compensation correction factor accuracy of an electrometer is provided. The electrometer includes an electrical amplifier to convert a current signal to a voltage signal. The electrometer also includes a compensation circuit to modify the voltage signal for temperature compensation. The electrometer further includes a heat producing device to induce a temperature change of the electrical amplifier and the compensation circuit. An environmental radiation monitor is also provided. The environmental radiation monitor includes a power supply, a high pressure ionization chamber, and the electrometer. The method includes providing an environmental radiation monitor, measuring the voltage signal at a first time, activating a heat producing device, measuring the voltage signal at a second time, and comparing the two measured values of the voltage signal.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: May 5, 2015
    Assignee: General Electric Company
    Inventor: Dan Jay McCormick
  • Patent number: 9000750
    Abstract: A method and apparatus for providing a temperature sensing loop used in connection with a current sensing component, such as a BATFET, in order to compensate for variations in the BATFET's resistance due to temperature variations. The temperature sensing loop detects a temperature of the BATFET and regulates the gate voltage of the BATFET based on the detected temperature in order to compensate for changes in the BATFET's resistance. The temperature sensing feedback loop maintains the BATFET at a constant resistance for current sensing through negative feedback control. The BATFET and temperature sensing loop can be provided as components of an on-chip fuel gauging application for a UE.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Baiying Yu, Nihit Bajaj, Troy Stockstad, Eric I. Mikuteit
  • Publication number: 20150069997
    Abstract: A manufacturing method is used for a current sensor including a current measurement circuit configured to include magnetoelectric conversion elements, a first amplification-and-correction circuit configured to amplify an output of the current measurement circuit and correct, based on a set first correction amount, a temperature characteristic of an offset, a second amplification-and-correction circuit configured to amplify an output of the first amplification-and-correction circuit, adjust a sensitivity, and correct, based on a set second correction amount, a magnitude of the offset, and a substrate in which the current measurement circuit, the first amplification-and-correction circuit, and the second amplification-and-correction circuit are provided, wherein after the first correction amount is set based on characteristics of the magnetoelectric conversion elements, the magnetoelectric conversion elements are mounted in the substrate and the second correction amount is set.
    Type: Application
    Filed: November 13, 2014
    Publication date: March 12, 2015
    Inventors: Ken KAWAHATA, Nobuyoshi YAMASAKI, Masatoshi NOMURA
  • Publication number: 20150061642
    Abstract: A current measurement device measures current flowing in a composite material M containing conductive fibers. The current measurement device includes a temperature measuring unit that measures the temperature of a surface of the composite material, upon flow of current in the composite material; a storage unit that stores conversion data that is acquired as a result of a conversion data acquisition test performed beforehand and that results from converting the temperature of the surface of the composite material to the value of the current flowing in the composite material; and a current calculator that, on the basis of the conversion data stored in the storage unit, converts the temperature of the surface of the composite material M as measured by the temperature measuring unit to a value of the current flowing in the composite material.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventor: Hiroyuki Tsubata
  • Publication number: 20140340074
    Abstract: The invention relates to a monitoring arrangement for monitoring an electrical line having at least one thermogenerator and/or a device for inductively producing energy, determination means for determining at least one electrical characteristic parameter of an electrical current flowing in the electrical line and/or the temperature of the electrical line and/or the area surrounding the electrical line. An electrical connection exists or can be established between the determination means and the thermogenerator or the device for inductively producing energy, which connection can be used to operate the determination means with electrical energy produced by the thermogenerator or provided by the device for inductively producing energy; and connection means for establishing a mechanical connection to the electrical line.
    Type: Application
    Filed: January 27, 2012
    Publication date: November 20, 2014
    Applicant: MICROPELT GMBH
    Inventors: Joachim Nurnus, Fritz Volkert, Martin Schmidt
  • Publication number: 20140327376
    Abstract: A method is used for measuring injection energy associated with an organic light emitting diode display device. The method includes disposing the display panel inside a chamber and controlling temperature inside the chamber. The method further includes determining a plurality of electric current values corresponding to a plurality of temperature values for each voltage value of plurality of voltage values, the plurality of voltage values being associated with voltages provided to the organic light emitting member. The method further includes calculating a plurality of injection energy values using the plurality of electric current values and the plurality of temperature values.
    Type: Application
    Filed: August 2, 2013
    Publication date: November 6, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae-Kyu SHIM, Hye-Lim SHIN, Won-Jun SONG, Jae-Bok KIM
  • Publication number: 20140312916
    Abstract: A sensor apparatus for measuring a plasma process parameter for processing a workpiece. The sensor apparatus includes a base, an information processor supported on or in the base, and at least one sensor supported on or in the base. The at least one sensor includes at least one sensing element configured for measuring an electrical property of a plasma and may include a transducer coupled to the at least one sensing element. The transducer can be configured to receive a signal from the sensing element and convert the signal into a second signal for input to the information processor.
    Type: Application
    Filed: April 14, 2014
    Publication date: October 23, 2014
    Applicant: KLA-Tencor Corporation
    Inventors: Randall S. Mundt, Paul Douglas MacDonald, Andrew Beers, Mason L. Freed, Costas J. Spanos
  • Patent number: 8847575
    Abstract: According to various embodiments, a circuit arrangement is provided which includes a bridge circuit having at least two field effect transistors and a measurement circuit configured to measure a forward voltage of a body diode of any one of the at least two field effect transistors resulting from a predefined current flowing through the field effect transistor.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: September 30, 2014
    Assignee: Infineon Technologies AG
    Inventors: Benno Koeppl, Frank Auer, Andreas Kiep
  • Publication number: 20140285180
    Abstract: An improved measurement circuit includes a current transformer and an active feedback circuit operated as a negative resistance that matches the value of the winding resistance of the current transformer. An amplifier in the feedback circuit provides power to drive a secondary current through a sense resistor and the transformer winding resistance, reducing the most significant error source in a current transformer circuit by presenting a negative impedance to the current transformer. Combined with the positive resistance of the transformer's winding, the negative impedance results in a net burden of zero on the current transformer, which eliminates the need for the transformer having to provide power to drive the secondary current. This facilitates the use of smaller transformers while achieving reduced measurement errors. Thus, a single, compact measurement device may be used in a wide range of applications with high measurement performance.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 25, 2014
    Applicant: National Instruments Corporation
    Inventor: Garritt W. Foote
  • Patent number: 8841912
    Abstract: A pre-amplifier circuit for connection to an antenna of a human-portable locator includes a differential amplifier/mixer pair and means for allowing a common-mode “phantom” signal to modulate a transfer function of the differential amplifier/mixer pair. The common-mode phantom signal modulates the transfer function of the differential pre-amplifier “onboard” the antenna without the usual requirement for onboard power supply and signal oscillator. This technique uses the same electronic components to provide both pre-amplification and mixing functions, thereby improving circuit performance-to-cost ratio, reducing mixer power consumption, situating the necessary signal oscillator remotely from the mixer, and greatly improving the available system bandwidth by limiting spectral transmission demands to the mixed signal bandwidth alone.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: September 23, 2014
    Assignee: Seescan, Inc.
    Inventor: Stephen M. Bench
  • Publication number: 20140266154
    Abstract: A system includes a utility meter. The utility meter includes a sensor configured to detect a utility usage, a processor configured to determine an ambient temperature of the utility meter, and a memory configured to store a data collection system. The data collection system is configured to be utilized by the processor to store the utility usage at least partially according to the ambient temperature of the utility meter.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Gregory Paul Lavoie, Jason Subirana, Guy Lafond
  • Patent number: 8760180
    Abstract: Methods and systems for compensating for temperature variation in the performance of electronic circuits and systems are disclosed. In some embodiments, the systems are configured to store compensation parameters determined in calibration, where the compensation parameters are used by the systems to modify performance. In some embodiments, the systems are part of an automatic test equipment (ATE) system.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: June 24, 2014
    Assignee: Analog Test Engines
    Inventor: Jeffrey Allen King
  • Publication number: 20140159998
    Abstract: The invention discloses a current detecting circuit, a temperature compensating device and a display device, and relates to the field of display technology, which resolves the problem of image flicker in the display screen or abnormal display due to changes in the turn-on voltage of the thin film transistors in the display panel caused by changes in the temperature in the prior art. The current detecting circuit includes a voltage source, a first mirror current source for supplying a reference current, a second mirror current source for obtaining a difference between a current output from the first mirror current source and a current output from a unit to be detected and converting the difference into a voltage signal, and an inverter for amplifying the voltage signal and output a detection result. A temperature compensating device including the foregoing current detecting circuit. A display device including the above temperature compensating device.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 12, 2014
    Applicants: Hefei BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Shanshan Huang, Min Wang, Chunyang Nie
  • Publication number: 20140118013
    Abstract: A method and an electronic device are disclosed for measuring a current. The device measures a temperature between a first sampling point and a second sampling point on a metal structure carrying a current to be measured. The device outputs a first signal according to the measured temperature and a second signal after sampling and filtering the first signal. The device detects the first voltage signal at the first sampling point and the second voltage signal at the second sampling point. The device samples and filters a difference between the first voltage signal and the second voltage signal and outputs a third voltage signal. The device restores the second signal to a temperature value representing a temperature between the first sampling point and the second sampling point and calculates a resistance value between the first sampling point and the second sampling point according to the temperature value.
    Type: Application
    Filed: December 6, 2013
    Publication date: May 1, 2014
    Applicant: Huawei Administration Building
    Inventors: Jing Yang, Qinghuan Wei
  • Publication number: 20140046607
    Abstract: Disclosed are various embodiments involving correction of signals generated by a crystal oscillator. An age of an integrated circuit or a time of use of the integrated circuit may be determined. A signal generated from a crystal of the integrated circuit may be modified based at least in part on the determined age of the integrated circuit or the determined time of use of the integrated circuit.
    Type: Application
    Filed: October 21, 2013
    Publication date: February 13, 2014
    Applicant: Broadcom Corporation
    Inventors: EVAN MCCARTHY, JOHN WALLEY, JEON HYUN-GYU, AMIR IBRAHIM, SUNIL KANEKAL, JARED WELZ
  • Publication number: 20140028285
    Abstract: A method and apparatus for providing a temperature sensing loop used in connection with a current sensing component, such as a BATFET, in order to compensate for variations in the BATFET's resistance due to temperature variations. The temperature sensing loop detects a temperature of the BATFET and regulates the gate voltage of the BATFET based on the detected temperature in order to compensate for changes in the BATFET's resistance. The temperature sensing feedback loop maintains the BATFET at a constant resistance for current sensing through negative feedback control. The BATFET and temperature sensing loop can be provided as components of an on-chip fuel gauging application for a UE.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 30, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Baiying Yu, Nihit Bajaj, Troy Stockstad, Eric I. Mikuteit
  • Patent number: 8629673
    Abstract: A system for determining an amount of power supplied from a power amplifier may include a power amplification circuit having a characteristic thermal resistance, a first temperature sensor for sensing a first temperature associated with the power amplification circuit when the power amplification circuit is receiving power from the power source, a second temperature sensor for sensing a second temperature associated with an environment occupied by the power amplification circuit, and a processor coupled with the first temperature sensor and the second temperature sensor for determining an amount of power dissipation utilizing (A) a temperature difference determined utilizing the first temperature and the second temperature and (B) the characteristic thermal resistance of the power amplification circuit.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: January 14, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: Chenggang Xie
  • Patent number: 8593135
    Abstract: In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more of rotatable LED light bars, integrated sensors, onboard intelligence to receive signals from the LED light bars and control the LED light bars, and a mesh network connectivity to other fixtures.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: November 26, 2013
    Assignee: Digital Lumens Incorporated
    Inventors: Brian J. Chemel, Colin Piepgras, Steve T. Kondo, Scott D. Johnston
  • Publication number: 20130307526
    Abstract: In some embodiments a method includes receiving, from a sensor device, a signal indicative of a voltage associated with a current passing over a line that is disposed through the sensor device. The method includes receiving, from the sensor device, a signal indicative of (1) a calibrated sensitivity of the sensor device, (2) a calibrated temperature of the sensor device, and (3) an ambient temperature that was received from an ambient temperature sensor. The method includes defining an actual sensitivity of the sensor device based on (1) the calibrated sensitivity of the sensor device, (2) the calibrated temperature of the sensor device, and (3) the ambient temperature. The method includes sending a signal indicative of a modified electric current value based on (1) the voltage and (2) the actual sensitivity of the sensor device.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Inventors: Lowell G. Seal, Kartikeya Tripathi, David S. Yaney
  • Publication number: 20130285642
    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: Application
    Filed: November 4, 2011
    Publication date: October 31, 2013
    Applicant: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Werner Perndl, Toralf Bratfisch, Michael Katzer, Thomas Reichel
  • Publication number: 20130256550
    Abstract: An apparatus and method for verifying the temperature compensation correction factor accuracy of an electrometer is provided. The electrometer includes an electrical amplifier to convert a current signal to a voltage signal. The electrometer also includes a compensation circuit to modify the voltage signal for temperature compensation. The electrometer further includes a heat producing device to induce a temperature change of the electrical amplifier and the compensation circuit. An environmental radiation monitor is also provided. The environmental radiation monitor includes a power supply, a high pressure ionization chamber, and the electrometer. The method includes providing an environmental radiation monitor, measuring the voltage signal at a first time, activating a heat producing device, measuring the voltage signal at a second time, and comparing the two measured values of the voltage signal.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 3, 2013
    Applicant: General Electric Company
    Inventor: Dan Jay McCormick
  • Patent number: 8508214
    Abstract: An electronic switching device and method for the detection of a detection element stream through a detection element and/or a temperature in said detection element. A first connection of the detection element is connected to a first transistor element and a second connection of the detection element is connected to a second transistor element. The base connections of the first and second transistor element are directly or indirectly connected to one another and the second transistor element (Q2) provides and/or modulates an electrical evaluation signal. The signal value of the electrical evaluation signal is directly or indirectly dependent on at least the detection element stream and/or the temperature in the detection element.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: August 13, 2013
    Assignee: Continental Teves AG & Co oHG
    Inventors: Michael Kutzner, Tobias Unger
  • Publication number: 20130093411
    Abstract: According to various embodiments, a circuit arrangement is provided which includes a bridge circuit having at least two field effect transistors and a measurement circuit configured to measure a forward voltage of a body diode of any one of the at least two field effect transistors resulting from a predefined current flowing through the field effect transistor.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Applicant: INFINEON TECHNOLOGIES AG
    Inventors: Benno Koeppl, Frank Auer, Andreas Kiep
  • Publication number: 20130085709
    Abstract: Systems for determining differential and average temperatures from resistive temperature devices are provided. In one embodiment, a device comprises a bridge network including a first node and second node, wherein the first node receives a constant current from a current source; a first branch coupled between a first node and a second node, the first branch including a first temperature sensing element of a first resistive temperature device; a second branch coupled in parallel with the first branch between the first node and the second node, the second branch including a second temperature sensing element of a second resistive temperature device; a first output that provides a signal representing a difference between a voltage developed across the first temperature sensing element and a voltage developed across the second temperature sensing element; and a second output that provides a signal representing a voltage developed across first node and the second node.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Terry Dean Stark, Travis Edward Christle, Francis J. Judson, Michael G. Miller
  • Publication number: 20130057254
    Abstract: A current measurement circuit to measure current flowing through an inductor includes two metal oxide semiconductor field effect transistors, a resistor, a negative temperature coefficient thermistor, two capacitors, and a pulse width modulator.
    Type: Application
    Filed: April 11, 2012
    Publication date: March 7, 2013
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO. LTD.
    Inventor: YA-JUN PAN
  • Publication number: 20130049777
    Abstract: An integrated circuit includes a device identification circuit and a temperature sensor diode connected in parallel from a common node. The device identification circuit includes a resistor connected to a diode-connected transistor. The device identification circuit and the temperature sensor diode are adapted to not be simultaneously operating in an ON state. A first voltage is applied to the common node to place the device identification circuit in an ON state and place the temperature sensor diode in an OFF state to identify the integrated circuit. A second voltage is applied to the common node to place the device identification circuit in an OFF state and place the temperature sensor diode in an ON state to determine a temperature of the integrated circuit.
    Type: Application
    Filed: September 21, 2011
    Publication date: February 28, 2013
    Inventors: Shen Wang, Edward T. Nelson
  • Patent number: 8368384
    Abstract: A method of reducing thermal stresses of a semiconductor component in a frequency converter, an arrangement in a frequency converter, and a frequency converter, wherein the semiconductor component is attached to a cooling element for cooling the semiconductor component and one or more resistive elements are attached to the cooling element. In the method, the cooling element is heated by the one or more resistive elements attached thereto by supplying current from the frequency converter through the one or more resistive elements for obtaining an elevated lowest temperature for the semiconductor component and thereby reducing the amount of temperature change between the highest and the lowest temperatures in the semiconductor component during use of the frequency converter.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: February 5, 2013
    Assignee: ABB OY
    Inventors: Kjell Ingman, Kari Tikkanen, Tomi Väisälä, Kai Johansson
  • Publication number: 20130024144
    Abstract: Methods, systems, and devices for determining a harmonic are described herein. One method includes determining a temperature of a circuit conductor while the circuit conductor is conducting a current, and determining a harmonic associated with the circuit conductor based, at least in part, on the determined temperature.
    Type: Application
    Filed: July 19, 2011
    Publication date: January 24, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: Julie J. Hull Roskos
  • Publication number: 20120323508
    Abstract: A low voltage detector (100) includes a power supply voltage monitor circuit (110) that produces a voltage VSP related to a first a power supply voltage, and a voltage generator (105), which includes a plurality of self-cascode MOSFET (SCM) structures (101-103) in a cascade configuration, that generates a reference voltage Vxm. A voltage comparator (140) outputs an output signal in response to a differential between Vxm and VSP, wherein Vxm and VSP have proportional to absolute temperature behavior (PTAT) over temperature with respect to a second power supply voltage. The output signal changes state when the first power supply voltage equals a trip point of the comparator. Each SCM structure is sized to provide a rate of change with temperature of the PTAT behavior of Vxm that matches a rate of change with temperature of the PTAT behavior of VSP.
    Type: Application
    Filed: June 16, 2011
    Publication date: December 20, 2012
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Andre Luis VILAS BOAS, Alfredo OLMOS, Edgar Mauricio CAMACHO GALEANO, Fabio DE LACERDA