Patents Issued in April 18, 2019
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Publication number: 20190113538Abstract: A measuring system for measuring signals with multiple measurement probes comprises a multi probe measurement device comprising at least two probe interfaces that each couple the multi probe measurement device with at least one of the measurement probes, a data interface that couples the multi probe measurement device to a measurement data receiver, and a processing unit coupled to the at least two probe interfaces that records measurement values via the at least two probe interfaces from the measurement probes, wherein the processing unit is further coupled to the data interface and provides the recorded measurement values to the measurement data receiver, and a measurement data receiver comprising a data interface, wherein the data interface of the measurement data receiver is coupled to the data interface of the multi probe measurement device.Type: ApplicationFiled: January 15, 2018Publication date: April 18, 2019Inventors: Gerd Bresser, Friedrich Reich
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Publication number: 20190113539Abstract: A probe card for testing of electronic devices comprises a testing head with plural contact probes inserted into guide holes of an upper guide and a lower guide, and a space transformer, each of the contact probes having a first terminal portion projecting from the lower guide with a first length and ending with a contact tip adapted to abut onto a respective contact pad of a device to be tested, and a second terminal portion projecting from the upper guide with a second length and ending with a contact head adapted to abut onto a contact pad of the space transformer. The probe card comprises a spacer element interposed between the space transformer and the upper guide and removable to adjust the first length of the first terminal portion by changing the second length of the second terminal portion and approaching the upper guide and the space transformer.Type: ApplicationFiled: December 13, 2018Publication date: April 18, 2019Inventors: Roberto CRIPPA, Stefano FELICI
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Publication number: 20190113540Abstract: Various devices and techniques help to reduce the entry of unwanted radio waves into an enclosure and reduce the reflection of radio waves inside the enclosure. Such devices and techniques enable a test environment inside the enclosure that provides high-quality functionality and performance testing.Type: ApplicationFiled: October 12, 2018Publication date: April 18, 2019Applicant: Promptlink Communications, Inc.Inventors: Foad TOWFIQ, Mohammad OSTADKAR, Adib TOWFIQ
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Publication number: 20190113541Abstract: A measuring system for measuring signals with multiple measurement probes comprises a multi probe measurement device comprising at least two probe interfaces that each couple the multi probe measurement device with at least one of the measurement probes, a data interface that couples the multi probe measurement device to a measurement data receiver, and a processing unit coupled to the at least two probe interfaces that records measurement values via the at least two probe interfaces from the measurement probes, wherein the processing unit is further coupled to the data interface and provides the recorded measurement values to the measurement data receiver, and a measurement data receiver comprising a data interface, wherein the data interface of the measurement data receiver is coupled to the data interface of the multi probe measurement device.Type: ApplicationFiled: January 15, 2018Publication date: April 18, 2019Inventors: Gerd Bresser, Friedrich Reich
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Publication number: 20190113542Abstract: A test-and-measurement instrument is described. A state machine, corresponding to a regular expression, can be stored in the test-and-measurement instrument. The state machine can be modified to reflect a trigger condition received from a user. The modified state machine can then be used to invoke a trigger when the condition is met in the bits of a bit stream.Type: ApplicationFiled: December 4, 2018Publication date: April 18, 2019Applicant: Tektronix, Inc.Inventors: Aidan A. Daly-Jensen, Keith D. Rule, Dawson C. Green
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Publication number: 20190113543Abstract: The present invention relates to a measurement or inspection apparatus which can be adjusted depending on a color of a plugged-in cable. In this manner the display of measurement values and the colour of the plugged-in cable can be coordinated to each other such that a simple assignment between measurement values and cable can be performed.Type: ApplicationFiled: August 29, 2018Publication date: April 18, 2019Inventor: Bernhard Sterzbach
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Publication number: 20190113544Abstract: Disclosed herein is a magnetic sensor that includes a saturable magnetic member that receives magnetic flux flowing in a first axis direction, and a detection coil wound around the saturable magnetic member and having a coil axis aligned with a predetermine direction different from the first axis direction.Type: ApplicationFiled: October 5, 2018Publication date: April 18, 2019Applicant: TDK CORPORATIONInventors: Takashi Osada, Takahiro Hamamura, Tamon Kasajima
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Publication number: 20190113545Abstract: Embodiments of the invention include a current sensing device for sensing current in an organic substrate. The current sensing device includes a released base structure that is positioned in proximity to a cavity of the organic substrate and a piezoelectric film stack that is positioned in proximity to the released base structure. The piezoelectric film stack includes a piezoelectric material in contact with first and second electrodes. A magnetic field is applied to the current sensing device and this causes movement of the released base structure and the piezoelectric stack which induces a voltage (potential difference) between the first and second electrodes.Type: ApplicationFiled: July 1, 2016Publication date: April 18, 2019Inventors: Georgios C. DOGIAMIS, Adel A. ELSHERBINI, Shawna M. LIFF, Johanna M. SWAN, Jelena CULIC-VISKOTA, Thomas L. SOUNART, Feras EID, Sasha N. OSTER
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Publication number: 20190113546Abstract: A sensor for measuring current flow includes a housing containing a power generation circuit and a current measurement circuit. The sensor is entirely self-contained and is non-invasively attachable to a conductor. The sensor is self-powered using energy harvested by the power generation circuit. The current measurement circuit allows for continuous, uninterrupted measurement of at least one property related to the flow of current through the conductor. The sensor wirelessly transmits data related to the measured current flow to a computing device. The sensor may be used with other similar sensors to form a wireless sensor network that monitors one or more properties related to the flow of current through one or more conductors within a system.Type: ApplicationFiled: October 11, 2018Publication date: April 18, 2019Inventors: Stuti Jain, Mangesh Maruti Edake, Sushilkumar Madhukar Pagar, Vihari Venkatavidya Andukuri, Ashok Sridharan, Vivek Narain, Ankur Thareja, Hariharasudhan Venugopal
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Publication number: 20190113547Abstract: A current measurement device including current sensors positioned around current conductors in order to form a passage for the current conductors along an axis oriented in a first direction and a differential current sensor positioned around the set of current conductors in order to form a common passage for the current conductors along an axis oriented in a second direction. The current sensors and the differential current sensor are located in spaces that are separated by an interface plane. A method for manufacturing such a current measurement device, to a protection module and a differential circuit breaker including such a device.Type: ApplicationFiled: September 21, 2018Publication date: April 18, 2019Applicant: Schneider Electric Industries SASInventors: Christophe GRUMEL, Frederic BRASME, Nathalie LE GRAND
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Publication number: 20190113548Abstract: An electric power measuring device, consisting of a casing, which is provided with a first end, a second end, and a first through hole; a detection circuit board, which is mounted within the casing, and a switch and an indicator light set are mounted on the detection circuit board; an input pin set, which is mounted on the circuit board, moreover, a contact end of the input pin set passes through the area at the first end and is exposed external of the casing; an output pin set, which is contained within the casing and positioned at the second end; and a coil, which is mounted within the casing and encircles the first through hole. In addition, two ends of the coil are respectively connected to any one of the pins of the input pin set and any one of the pins of the output pin set.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Inventor: SHIH HSIANG CHIEN
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Publication number: 20190113549Abstract: A computer-implemented method, system, and computer program product are provided for anomaly detection in a power system. The method includes receiving, by a processor-device, a plurality of measurements from a plurality of meters throughout the power system. The method also includes generating, by the processor-device, temporal causal networks based on pair-wise relationships between the plurality of measurements from the plurality of meters over time. The method additionally includes determining, by the processor-device, invariant relationships for the plurality of meters between the temporal causal networks. The method further includes predicting, by the processor-device, an anomaly from the invariant relationships for the plurality of meters with a residual anomaly threshold. The method also includes disabling one of the plurality of meters that originated the anomaly.Type: ApplicationFiled: October 4, 2018Publication date: April 18, 2019Inventors: Kiyoshi Nakayama, Chenrui Jin, Ratnesh Sharma, Nikhil Muralidhar
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Publication number: 20190113550Abstract: A Hall sensor apparatus with a temperature measurement function and a current sensor apparatus with the same function are provided, and the temperature measurement function for measuring a temperature of a Hall sensor is implementable on the Hall sensor instead of an application specific integrated circuit (ASIC) that is a controller for driving the Hall sensor or a current sensor and the ASIC is installable far away from the Hall sensor, and thus a rise in temperature of the ASIC is preventable such that a stable measurement of the Hall sensor or the current sensor and stable driving control thereof is allowable.Type: ApplicationFiled: October 26, 2017Publication date: April 18, 2019Applicant: ITX-M2M Co., Ltd.Inventor: Ki Chul HONG
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Publication number: 20190113551Abstract: An electrical energy meter includes an A/D converter and a processing circuit. The A/D converter is configured to generate digital samples of voltage and current waveforms in a polyphase electrical system. The processing circuit is operably coupled to receive the digital samples from the A/D converter and to integrate over time at least one digital sample multiple times to produce a filtered value from which harmonic distortion has been removed, identify a fundamental frequency only electrical parameter measurement for the polyphase electrical system with reference to the filtered value, and store the identified fundamental frequency only electrical parameter measurement in a data store.Type: ApplicationFiled: October 17, 2017Publication date: April 18, 2019Inventors: David Stenberg, David Bobick
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Publication number: 20190113552Abstract: A method for spurious signal reduction when measuring a spectrum of a radio frequency signal over a frequency span. The radio frequency signal is converted to a sequence of intermediate frequency signals using a sequence of local oscillator signals each having a different frequency. The sequence of intermediate frequency signals are converted to a sequence of digitized intermediate frequency signal sample sets, each set having a frequency value and a signal energy value. The frequency span is divided into frequency sample bins. For each frequency sample bin, all frequency domain samples from the sequence of frequency domain sample sets having a frequency value within the frequency sample bin are associated with that sample bin. For each frequency sample bin, of the frequency domain samples associated with that frequency bin, the frequency domain sample having the signal energy value that is lowest is selected for a combined frequency domain sample set.Type: ApplicationFiled: December 3, 2018Publication date: April 18, 2019Inventor: Justin Crooks
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Publication number: 20190113553Abstract: A controller including a memory having computer-readable instructions stored therein; and a processor configured to execute the computer-readable instructions to: estimate a synthesized grid voltage vector angle at a terminal of an alternating current (AC) grid based on at least an adjusted angle, to generate Pulse Width Modulation (PWM) signals to control power switches of the AFE inverter based on at least the synthesized grid voltage vector angle, and to control the AFE inverter to exchange power between the AC grid and a load based on the PWM signals.Type: ApplicationFiled: March 8, 2018Publication date: April 18, 2019Inventors: Tianjun FU, Long Wu, Kent Wanner, Jason Dickherber, Chris J. Tremel
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Publication number: 20190113554Abstract: A method for evaluating a capacity value of a capacitive sensor electrode includes an evaluation process, which includes performing a charging process of a sensor electrode, and evaluating a parameter, which depends on the capacity value of the sensor electrode. A first charging pulse duration tL,1 for the charging process includes a first coupling duration tK,1 and a first decoupling duration tE,1 with tL,1=tK,1+tE,1, of a first coupling and decoupling cycle. A second charging pulse duration tL,2, includes a second coupling duration tK,2 and a second decoupling duration tE,2 with tL,2=tK,2+tE,2, of a second coupling and decoupling cycle immediately following the first coupling and decoupling cycle. These differ from each other by a first pulse duration difference ?tL,1.Type: ApplicationFiled: October 9, 2018Publication date: April 18, 2019Applicant: Huf Huelsbeck & Fuerst GmbH & Co. KGInventor: Berthold Sieg
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Publication number: 20190113555Abstract: Two linear conductors are orthogonally arranged to each other without short-circuiting. Both ends of one of the linear conductors are connected to corresponding both ends of another of the linear conductors by connecting conductors to form a continuous loop. A pair of terminals is provided in one divided portion in the loop. Loop antennas each including the linear conductors, the connecting conductors, and the terminals are linearly arranged, and the loop antennas adjacent to each other are arranged to be rotated relative to each other on a plane.Type: ApplicationFiled: June 7, 2016Publication date: April 18, 2019Applicant: Mitsubishi Electric CorporationInventors: Ryota KOBAYASHI, Tsuyoshi KOBAYASHI, Chiharu MIYAZAKI
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Publication number: 20190113556Abstract: A test device with a built-in test antenna is provided. The test device is applicable to a device under test having an antenna under test. The test device with a built-in test antenna includes: a test base board, a test socket, and an antenna assembly. The test base board is electrically connected to a test apparatus. The test socket is disposed on the test base board. The device under test is to be disposed on the test socket. The antenna assembly includes a test antenna and an antenna board. The antenna assembly is disposed inside the test socket so as to be coupled to the test antenna. The antenna board is electrically connected to the test base board, and the position of the test antenna corresponds to that of the antenna under test.Type: ApplicationFiled: December 1, 2017Publication date: April 18, 2019Inventor: HO-CHU KAO
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Publication number: 20190113557Abstract: The present disclosure provides an electric field component detection device and method, and a space electric field detection system. The electric field component detection device comprises a first electric field sensor and a second electric field sensor arranged symmetrically with respect to a driving rod; a differentiator, configured to perform differential processing on induced currents generated by the first electric field sensor and the second electric field sensor, respectively; a first support member and a second support member disposed at two ends of the driving rod, respectively, wherein each support member includes a bracket and an elastic portion disposed on the bracket, one end of the driving rod is connected with the elastic portion of the first support member, and the other end of the driving rod is connected with the elastic portion of the second support member.Type: ApplicationFiled: May 9, 2018Publication date: April 18, 2019Inventor: Yigeng FANG
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Publication number: 20190113558Abstract: A method for managing power in an airplane. Power quality data and load management data are collected from airplane systems in the airplane at a variable sampling rate using data collectors assigned to the airplane systems in which the variable sampling rate increases in response to a selected trigger event. The power quality data and the load management data are received by a power monitor from the data collectors during phases of flight for the airplane. A group of load management operations for the airplane systems are performed by a load manager in the airplane during operation of the airplane. The group of load management operations is performed using the power quality data and the load management data received from the data collectors during the phases of flight for the airplane.Type: ApplicationFiled: October 17, 2017Publication date: April 18, 2019Inventors: Anil Kumar, Kamiar J. Karimi, Timothy M. Mitchell, Evelyn M. Matheson, Eugene V. Solodovnik
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Publication number: 20190113559Abstract: The disconnection sensing circuit is provided with: the control unit having the ground connection terminal and the input terminal; the first external connection terminal capable of being connected to an external ground, the first external connection terminal being connected to the control-side ground line as a conduction path connected to the ground connection terminal; the second external connection terminal capable of being connected to an external ground, the second external connection terminal being connected to the power-side ground line as a conduction path having a greater electrifying current than the control-side ground line; and the transistor that restricts the electric power direction of the first bypass line connected between the control-side ground line and the power-side ground line to one direction, and that outputs the sensing signal corresponding to the electric power flowing through the first bypass line to the input terminal.Type: ApplicationFiled: March 30, 2017Publication date: April 18, 2019Inventor: Takuma Gotou
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Publication number: 20190113560Abstract: Various embodiments are described that relate an electrical current connector. The electrical current connector can be configured to provide electrical current when pressure is applied to a prong set. This pressure can cause a contact to engage with a connector. This can complete a circuit that allows the electrical current to flow. The connector can be coupled to a cable that can be configured to transfer data along with the electrical current. The cable can have an inner portion that transfers the data while an outer portion that surrounds the inner portion transfers the current.Type: ApplicationFiled: October 12, 2017Publication date: April 18, 2019Inventors: Thomas Podlesak, Michael Gonzalez
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Publication number: 20190113561Abstract: The disclosed system may include (1) a signal transmitter that transmits a signal for propagation along and external to a powerline conductor, (2) a signal receiver that receives at least a portion of the transmitted signal, and (3) an analysis subsystem that (a) monitors at least one characteristic of the received portion of the transmitted signal and (b) determines a status of the powerline conductor based at least in part on the at least one characteristic. Various other systems and methods are also disclosed.Type: ApplicationFiled: March 28, 2018Publication date: April 18, 2019Inventor: Karthik Yogeeswaran
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Publication number: 20190113562Abstract: A semiconductor wafer includes a semiconductor substrate having a plurality of die areas separated from one another by dicing areas. Each die area includes one or more metal layers above the semiconductor substrate and a plurality of fuse structures formed in at least one of the one or more metal layers. Each fuse structure includes a fuse area between first and second fuse heads. Each die area also includes a first pair of contacts connected to different areas of the first fuse head of at least some of the fuse structures. The wafer can be singulated along the dicing areas into individual dies. A corresponding method of fuse verification is also provided.Type: ApplicationFiled: October 17, 2017Publication date: April 18, 2019Inventors: Dietrich Bonart, Thomas Gross, Franziska Haering
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Publication number: 20190113563Abstract: A semiconductor device includes a main switching element, a sense switching element, a sense resistor and an operational amplifier. The main switching element has a first terminal and a second terminal between which a load current flows. The sense switching element is connected to the main switching element to form a current mirror, and has a third terminal and a fourth terminal between which a sense current correlated with the load current flows. The sense resistor is arranged in a feedback path of the operational amplifier. A direction of the sense current flowing through the sense resistor is switchable according to a magnitude relationship between a potential of the first terminal and a potential of the second terminal or a magnitude relationship between the potential of the first terminal and the potential of the fourth terminal.Type: ApplicationFiled: December 21, 2018Publication date: April 18, 2019Inventors: Sadahiro AKAMA, Hidekazu ONO
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Publication number: 20190113564Abstract: An apparatus for detecting difference in operating characteristics of a main circuit by using a replica circuit is presented. In one exemplary case, a sensed difference in operating characteristics of the two circuits is used to drive a tuning control loop to minimize the sensed difference. In another exemplary case, several replica circuits of the main circuit are used, where each is isolated from one or more operating variables that affect the operating characteristic of the main circuit. Each replica circuit can be used for sensing a different operating characteristic, or, two replica circuits can be combined to sense a same operating characteristic.Type: ApplicationFiled: November 30, 2018Publication date: April 18, 2019Inventors: Dan William Nobbe, Ronald Eugene Reedy, Peter Bacon, James S. Cable
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Publication number: 20190113565Abstract: An interconnect circuit testing apparatus including: an electric signal generating circuit for generating an electric signal; a first electrode arranged at a first region of a substrate, wherein the substrate includes an interconnect circuit, an upper surface and a lower surface; a second electrode arranged at a second region of the substrate; and a sensor for detecting an electric field emitted from the first region or the second region when the electric signal is applied to the substrate through the first electrode and the second electrode.Type: ApplicationFiled: April 20, 2018Publication date: April 18, 2019Inventors: Sung-Yeol Kim, Jae-Hong Kim, Kyung-Min Lee, Mee-Hyun Lim
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Publication number: 20190113566Abstract: A system includes a multiple input signature register (MISR) to receive outputs from M different scan chains in response to N test patterns applied to test an integrated circuit. The MISR provides N test signatures for the integrated circuit based on the outputs of the M different scan chains generated in response to each of the N test patterns. Each of the scan chains holds one or more test data bits that represent behavior of the integrated circuit in response to each of the N test patterns. A shift register is loaded from an interface and holds one of N comparison signatures that is used to validate a respective one of the N test signatures generated according to a given one of the N test patterns. A comparator compares each of the N test signatures with a respective one of the N comparison signatures to determine a failure condition based on the comparison.Type: ApplicationFiled: December 12, 2018Publication date: April 18, 2019Inventors: NAMAN MAHESHWARI, WILSON PRADEEP, PRAKASH NARAYANAN
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Publication number: 20190113567Abstract: A system and method for monitoring quality and controlling an AC power supply provided to medical equipment from a power outlet is provided. The method includes analyzing a digital signal to determine AC power supply quality characteristics of a corresponding AC power input received and converted to the digital signal at an AC power supply quality monitoring system. The method includes presenting the AC power supply quality characteristics at a display of the AC power supply quality monitoring system. The method includes determining whether the AC power supply quality characteristics are within a threshold quality range. The method includes activating a block at a protection circuit of the AC power supply quality monitoring system if the AC power supply quality characteristics are outside of the threshold quality range. The block at the protection circuit prevents the AC power input from being output from the AC power supply quality monitoring system.Type: ApplicationFiled: October 12, 2017Publication date: April 18, 2019Inventor: Hyun Chul Kim
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Publication number: 20190113568Abstract: In an embedded device with a plurality of processor cores, each core has a static random access memory (SRAM), a memory built-in self-test (MBIST) controller associated with the SRAM, an MBIST access port coupled with the MBIST controller, an MBIST finite state machine (FSM) coupled with the MBIST access port via a first multiplexer, and a JTAG interface coupled with the MBIST access ports of each processor core via the multiplexer of each processor core.Type: ApplicationFiled: October 17, 2017Publication date: April 18, 2019Applicant: Microchip Technology IncorporatedInventors: Stephen Bowling, Igor Wojewoda, Dereck Fernandes, Manivannan Balu, Yong Yuenyongsgool, Timothy Phoenix, Steve Bradley
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Publication number: 20190113569Abstract: A measurement instrument configured to perform an associated method separates two signals which are present on the same signal line at the same time (e.g., an incident signal and a reflected signal) so that it can measure each signal by itself. In an example, the method may include: receiving a first probed waveform from a first location on a signal line between a source device and a destination device while an output of the source device sends an incident signal to an input of the destination device via the signal line; receiving a second probed waveform from a second location on the signal line, while the output of the source device sends the incident signal to the input of the destination device via the signal line; and ascertaining from the first probed waveform and the second probed waveform the reflection coefficient at the input of the destination device.Type: ApplicationFiled: October 12, 2017Publication date: April 18, 2019Inventors: Hiroyuki Horikami, Tatsuo Yoda, Yoshiyuki Yanagimoto
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Publication number: 20190113570Abstract: A system and method for monitoring, testing or configuring electrical devices includes an input amplifier having an input connected to a device load line to generate an output linearly proportional to a voltage on the load line. An output of the input amplifier is connected to a photodiode in an optical path with a phototransistor. The phototransistor generates an output proportional to light generated by the photodiode, and this output is amplified and passed to an analog-to-digital converter. The converter generates a digital voltage level corresponding to the amplified output of the phototransistor. Digital temperature information is used to further enhance linearity of a generated digital voltage level. Multiple quantum well photodiodes further improve measurement linearity.Type: ApplicationFiled: October 17, 2017Publication date: April 18, 2019Inventor: Jurgis ASTRAUSKAS
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Publication number: 20190113571Abstract: Systems and methods for determining the integrity of metrology systems are provided. A method according to one implementation includes the step of storing, with a computer having a system clock, an initialization time at which a device is connected to the computer. The method also includes receiving, with the computer, information obtained by the device and associating an electronic timestamp to the information. The electronic timestamp is based on the system clock when the computer receives the information obtained by the device. The method also includes counting clock cycles to determine an elapsed time from the initialization time to the time when the computer receives the information obtained by the device. Also, the method determines if the system clock has been altered by comparing the electronic timestamp to the sum of the initialization time and the elapsed time.Type: ApplicationFiled: October 18, 2017Publication date: April 18, 2019Inventors: H. Sprague Ackley, Jeffrey Mark Hunt
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Publication number: 20190113572Abstract: Techniques facilitating determination and correction of physical circuit event related errors of a hardware design are provided. A system can comprise a memory that stores computer executable components and a processor that executes computer executable components stored in the memory. The computer executable components can comprise a simulation component that injects a fault into a latch and a combination of logic of an emulated hardware design. The fault can be a biased fault injection that can mimic an error caused by a physical circuit event error vulnerability. The computer executable components can also comprise an observation component that determines one or more paths of the emulated hardware design that are vulnerable to physical circuit event related errors based on the biased fault injection.Type: ApplicationFiled: October 18, 2017Publication date: April 18, 2019Inventors: Pradip Bose, Alper Buyuktosunoglu, Schuyler Eldridge, Karthik V. Swaminathan, Yazhou Zu
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Publication number: 20190113573Abstract: Methods and systems for determining a systematic defect in a circuit under test is provided. Elements of the circuit under test converted into scan cells. A first scan chain that includes a first plurality of scan cells is formed. Each scan cell of the first plurality of scan cells of the first scan chain are of a first cell type. The first scan chain contains a first scan input and a first scan output. A first test pattern is applied at the scan input and a first test output is collected for the applied first test pattern at the first scan output. The collected first test output is compared with a first expected test output. The first cell type is marked to be a suspect for a systematic defect when the first test output is different from the first expected test output.Type: ApplicationFiled: September 12, 2018Publication date: April 18, 2019Inventors: SANDEEP KUMAR GOEL, YUN-HAN LEE, ANKITA PATIDAR
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Publication number: 20190113574Abstract: A controller controls a plurality of sensor electrodes. To a plurality of sense pins, the plurality of sensor electrodes are connected. A plurality of capacitance detection circuits respectively measure capacitance values of the corresponding sense pins. A calibration circuit calibrates the plurality of capacitance detection circuits. A relative relationship among the respective capacitance values of the plurality of sense pins is used for abnormality detection.Type: ApplicationFiled: October 11, 2018Publication date: April 18, 2019Inventors: Yukihiro IWAMOTO, Masaya HIRAKAWA
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Publication number: 20190113575Abstract: The present disclosure relates to systems and methods for detecting transient high-torque events associated with rotating machinery in an electric power system. In one embodiment, a relay may comprise an electrical parameters module configured to receive a representation of a voltage and a current at a terminal of rotating machinery in an electric power system. A torque calculation module may be configured to continuously determine a calculated torque value for the rotating machinery using the representation of the voltage and the current at the terminal of the rotating machinery; and to compare each calculated torque value to a threshold. An action module may be configured to generate an alarm when the calculated torque value exceeds the threshold. A log module may be configured to generate a log comprising a peak of the calculated torque value and a time at which the peak torque value occurs.Type: ApplicationFiled: October 13, 2017Publication date: April 18, 2019Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Dale S. Finney, Normann Fischer, Derrick Haas
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Publication number: 20190113576Abstract: A motor drive device includes an inverter configured to convert a DC voltage to an AC voltage by switching power devices, a current detector configured to detect a current output from the inverter, a current controller configured to generate a voltage command, a control signal generator configured to control switching of the power devices, a dynamic brake circuit provided with relays and configured to short-circuit an output side terminal of the inverter via resistances, a storage configured to store an initial current value and a first threshold value, and a failure determiner configured to compare a current value and an initial current value after a predetermined time has elapsed since detection of the initial current value, and determine presence or absence of a failure based on a result of comparing a change rate of the current value from the initial current value with the first threshold value.Type: ApplicationFiled: October 11, 2018Publication date: April 18, 2019Applicant: FANUC CORPORATIONInventors: Sou Saito, Tsutomu Shikagawa
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Publication number: 20190113577Abstract: A method of using data-driven predictive modeling to predict and classify battery cells by lifetime is provided that includes collecting a training dataset by cycling battery cells between a voltage V1 and a voltage V2, continuously measuring battery cell voltage, current, can temperature, and internal resistance during cycling, generating a discharge voltage curve for each cell that is dependent on a discharge capacity for a given cycle, calculating, using data from the discharge voltage curve, a cycle-to-cycle evolution of cell charge to output a cell voltage versus charge curve Q(V), generating transformations of ?Q(V), generating transformations of data streams that include capacity, temperature and internal resistance, applying a machine learning model to determine a combination of a subset of the transformations to predict cell operation characteristics, and applying the machine learning model to output the predicted battery operation characteristics.Type: ApplicationFiled: October 16, 2018Publication date: April 18, 2019Inventors: Kristen Ann Severson, Richard Dean Braatz, William C. Chueh, Peter M. Attia, Norman Jin, Stephen J. Harris, Nicholas Perkins
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Publication number: 20190113578Abstract: Provided is a device including an acquisition unit configured to obtain a time taken for a voltage level of a battery in a charge mode to change for each of a plurality of voltage sections, and a prediction unit configured to predict a state of health (SOH) of the battery based on ratio information determined by comparing the time obtained for each of the plurality of voltage sections with a reference time for each of the plurality of voltage sections. When the time taken for some voltage sections of the plurality of voltage sections is obtained by the acquisition unit, the prediction unit corrects the predicted SOH of the battery based on the time taken for the voltage level of the battery in a discharge mode to change.Type: ApplicationFiled: October 10, 2018Publication date: April 18, 2019Applicant: OCI Company Ltd.Inventors: MyungSup UM, HeeChang Ye
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Publication number: 20190113579Abstract: A reusable battery indicator includes a voltage sensor, a communication circuit communicatively connected to the voltage sensor, an antenna operatively coupled to the communication circuit, and a connection mechanism having a connector and a retainer. The connector and the retainer are electrically connected to the voltage sensor, and the connector is adapted to be removably connected to a first battery terminal, thereby providing an electrical connection between the voltage sensor and the first battery terminal. The retainer is adapted to removably secure the voltage sensor to a can of a battery, thereby providing an electrical connection between the voltage sensor and the can of the battery. An electrical circuit is completed between the voltage sensor and the first battery terminal and between the voltage sensor and the can. The connection mechanism includes part of an electrical lock and key assembly.Type: ApplicationFiled: December 10, 2018Publication date: April 18, 2019Applicant: DURACELL U.S. OPERATIONS, INC.Inventors: Joern Riemer, Robert Pavlinsky, Jordan Bourilkov, Steven J. Specht, George Turco, Sergio Coronado
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Publication number: 20190113580Abstract: A voltage detection unit detects voltage between both ends of a power storage unit. A current detection unit detects current flowing through the power storage unit. A control unit estimates a state of charge (SOC) of the power storage unit using an open circuit voltage (OCV) method based on the voltage detected by the voltage detection unit and estimates the SOC of the power storage unit using a current integration method based on the current detected by the current detection unit. The control unit compares the SOC estimated using the OCV method with the SOC estimated using the current integration method to determine whether micro short circuit occurs in the power storage unit.Type: ApplicationFiled: December 13, 2018Publication date: April 18, 2019Inventors: HIROSHI TENMYO, SHINICHI YUASA, TOMOKAZU SADA
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Publication number: 20190113581Abstract: A battery state estimation method is provided. The method includes a first charging step for charging a high-voltage battery until a full charge state is reached, a discharging step for discharging the battery from the full charge state to a lower-limit charge state and calculating a battery capacity of the battery by accumulating a discharge current during the discharging, a second charging step for recharging the battery from the lower-limit charge state to the full charge state, halting the charging for a predetermined period every time one of measuring points defined between the lower-limit charge state and the full charge state is reached, and measuring the OCV of the battery after a predetermined period has passed, and resuming the charging after the measuring is completed, and a correlation characteristic obtaining step for obtaining correlation characteristic of the battery based on SOC and the OCV measured at each measuring point.Type: ApplicationFiled: October 12, 2018Publication date: April 18, 2019Applicant: Honda Motor Co.,Ltd.Inventor: Masayuki KAWAMURA
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Publication number: 20190113582Abstract: A method for monitoring battery safety is provided. When a terminal device remains coupled with an adaptor after charging of a battery of the terminal device is completed, in response to the terminal device being in a low-power state, recharge information of the terminal device is acquired. According to the recharge information of the terminal device, whether the battery is abnormal is determined. The disclosure further provides a system for monitoring battery safety and a non-transitory computer readable storage medium.Type: ApplicationFiled: December 3, 2018Publication date: April 18, 2019Inventor: Wei Chen
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Publication number: 20190113583Abstract: A parameter identification circuit for a digital power converter having an inductor and a capacitor, can include: an inductor parameter circuit that receives an inductor current of the inductor, a capacitor voltage of the capacitor, a duty cycle in a start-up stage, and a predetermined inductor current, where the inductor parameter circuit obtains an inductor parameter according to an integrated value of the capacitor voltage, an integrated value of the duty cycle in the start-up stage, and the predetermined inductor current, when the inductor current rises to a level of the predetermined inductor current; and a capacitor parameter circuit that receives the inductor current, the capacitor voltage, and a predetermined capacitor voltage, where the capacitor parameter circuit obtains a capacitor parameter according to an integrated value of the inductor current and the predetermined capacitor voltage when the capacitor voltage rises to a level of the predetermined capacitor voltage.Type: ApplicationFiled: December 12, 2018Publication date: April 18, 2019Inventors: Zhiyuan Shen, Chen Zhao
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Publication number: 20190113584Abstract: An apparatus comprises a first measurement circuit having a first magnetic field sensing element to detect a measured magnetic field and produce a first signal representing the measured magnetic field, and a first signal processing circuit to process the first signal to produce a first processed signal. A second measurement circuit comprises a second magnetic field sensing element to detect a measured magnetic field and produce a second signal representing the measured magnetic field, and a second signal processing circuit to process the second signal to produce a second processed signal. A diagnostic processing circuit is coupled to receive the first signal and the second signal and configured to process the first signal during a first time period to produce a first diagnostic signal, and process the second signal during a second time period. A logic circuit determines if an error is present.Type: ApplicationFiled: October 12, 2017Publication date: April 18, 2019Applicant: Allegro MicroSystems, LLCInventors: Aaron Cook, Virag V. Chaware, Craig S. Petrie
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Publication number: 20190113585Abstract: The method relates to a synchronization of a magnetic locating system including a first device and a second device each including an oscillator, a time counter clocked by the oscillator, and a radiocommunication module. The locating system also includes a device for emitting and receiving alternating magnetic fields, the device being configured to allow a propagation of alternating magnetic fields between the first and second devices, the device for emitting and receiving alternating magnetic fields being connected to the oscillators of the first and second devices. The synchronizing method includes a synchronizing step that is configured to synchronize the oscillators of the first and second devices by adjusting, by servo-controlling the oscillator of the second device, the operation of the time counter of the second device to the operation of the time counter of the first device.Type: ApplicationFiled: October 12, 2018Publication date: April 18, 2019Applicant: Commissariat a l'energie atomique et aux energies alternativesInventors: Vincent JOSSELIN, Francois BERTRAND, Saifeddine ALOUI, Jerome PAULET
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Publication number: 20190113586Abstract: A radio frequency transmit system (40) for use in magnetic resonance imaging apparatuses, comprising a radio frequency driver unit (42) including at least a first radio frequency power source (44; 82) and a second radio frequency power source (46; 84), a radio frequency coil arrangement (48) for generating an RF magnetic excitation field B1, and a plurality of switching members (68, 70, 72, 74) electrically connecting the radio frequency power sources (44, 46; 82, 84) to different pairs of drive ports (58, 60, 62, 64) in a first and in at least a second switching status. The first drive port (58) of the first pair of drive ports (58, 60) and the first drive port (62) of the at least second pair of drive ports (62, 64) are arranged spaced by a fixed predetermined angular distance in the azimuthal direction (56) about the center axis (50); and a magnetic resonance imaging system (10) including such radio frequency transmit system (40).Type: ApplicationFiled: April 4, 2017Publication date: April 18, 2019Inventors: OLIVER LIPS, PETER VERNICKEL
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Publication number: 20190113587Abstract: Described here are systems and methods for providing three-dimensional motion estimates prior to and during MRI-guided therapies. In general, these systems and methods can include simultaneous orthogonal plane imaging (“SOPI”), synthetic volumetric imaging (“SVI”), self-navigated phase-resolved 4D MRI, radial CAIPIRINHA, and combinations thereof.Type: ApplicationFiled: April 3, 2017Publication date: April 18, 2019Inventors: Eric Paulson, Nikolai Mickevicius