Abstract: Systems, methods and apparatus for automatic alarm management in a radio-frequency (RF) environment are disclosed. An apparatus calculates a power distribution by frequency of the RF environment in real time or near real time, including a first derivative and a second derivative of FFT data of the RF environment. The apparatus then creates a baseline based on the power distribution by frequency of the RF environment in a period of time, identifies at least one alarm situation based on a multiplicity of alarm triggering conditions by comparing the power distribution in real time or near real time to the baseline of the RF environment, identifies at least one signal based on the first derivative and the second derivative of FFT data in the at least one alarm situation, and sends at least one alarm comprising details of the at least one signal identified in the at least one alarm situation.

Abstract: A method, apparatus, and system for identifying electrical phases connected to electricity meters are disclosed. Voltage time series data of electricity meters are collected over a preselected collection time period, and three initial kernels representing three line-to-neutral phases are generated based on voltage correlations of meter-to-meter combinations. Three new kernels are then generated based on correlation values calculated for each of the three initial kernels with each electricity meter, and electricity meters are clustered into three groups based on average correlation values associated with each electricity meter. Six new kernels representing six phases are then formed based on the average correlation value associated with each electricity meter, and a predicted phase is assigned to each electricity meter based on correlation values of the electricity meter with each of the six new kernels based on the voltage time series data.

Abstract: Systems and methods are described for monitoring a high voltage electrical system in a vehicle. An interface circuit is configured to provide isolation between a high voltage component of the vehicle and a control module. The interface circuit comprises a high voltage constant current source, a voltage threshold detector and an electrical isolation circuit. The high voltage constant current source is configured to receive an input at a first voltage from the high voltage component. The voltage threshold detector is configured to receive an output from the high voltage constant current source and to output a signal to indicate whether the voltage of the high voltage component is at, or below, a desired voltage.

Abstract: A computer monitors a status of grid devices using sensor measurements. Sensor data is clustered using a predefined grouping distance value to define one or more sensor event clusters. A plurality of monitored devices is clustered using a predefined clustering distance value to define one or more asset clusters. A location is associated with each monitored device of the plurality of monitored devices. A distance is computed between each sensor event cluster and each asset cluster. When the computed distance is less than or equal to a predefined asset/sensor distance value for a sensor event cluster and an asset cluster, an asset identifier of the asset cluster associated with the computed distance is added to an asset event list. For each asset cluster included in the asset event list, an asset location of an asset is shown on a map in a graphical user interface presented in a display.

Abstract: A method, a system and a tangible product and non-transitory computer program are provided to automatically identify electrical installations in an electrical distribution system that are likely to exhibit an electrical non-conformity (ENC). The method requires only electrical profiles collected from meters and IT tools, without the need for any other sub-metering equipment. The method includes the steps of recovering electrical profiles generated by the meters; applying algorithmic processing associated with indicators of an ENC on the profiles; and identifying electrical installations likely to exhibit an ENC, according to the indicators that have met their target conditions. The method may include the recovery of local meteorological data and nominal data related to the electrical installations to confirm or deny that the identified electrical installations are likely to be non-conforming.

Abstract: A system for monitoring the state of a cable, includes a plurality of reflectometry devices able to inject a test signal at a point of injection into the cable and to measure a signal having propagated back through the cable to the point of injection into the cable, the reflectometry devices being intended to be positioned along the cable so as to divide the cable into successive segments, the system comprising a control unit that is able to communicate with the reflectometry devices and that is configured so as to carry out at least one reflectometry test consisting in injecting a test signal into the cable by means of a first reflectometry device and measuring the test signal, by means of the first reflectometry device, after it has propagated through the cable and been reflected from an impedance discontinuity, the system further comprising a post-processing unit able to communicate with the reflectometry devices and configured to analyze the measurement of the test signal with a view to detecting an ampli

Abstract: A fault arc signal detection method using a convolutional neural network, comprising: enabling a sampling signal subjected to analog-digital conversion to respectively pass through three different band-pass filters; respectively extracting a time-domain feature and a frequency-domain feature from a half wave output of each filter; constructing a two-dimensional feature matrix by means of extracted time-frequency feature vectors from the output of each filter, and stacking the feature matrices corresponding the outputs of the three filters to construct a three-dimensional matrix for each half wave; and processing a multi-channel feature matrix by using a multi-channel two-dimensional convolutional neural network, and determining, according to the output result of the neural network, whether the half wave is an arc.

Abstract: The present application relates to a test circuit, comprising: M stages of test units, first terminals of test units in each stage being all connected to a power wire, second terminals of test units in each stage being all connected to a ground wire, third terminals of test units in the first stage being connected to the power wire, and third terminals of test units in the ith stage being connected to fourth terminals of test units in the (i?1)th stage; wherein, the M and i are positive integers greater than or equal to 2.

Abstract: An electronic monitoring circuit for detecting a variation in the power or current absorbed by an electronic circuit under test is disclosed. The circuit includes an input terminal adapted to receive a pulse-width modulation control signal, a resistor having a first terminal connected to the input terminal, and a capacitor having a first terminal connected to a second terminal of the resistor. The output terminal is adapted to generate an output signal as a function of the value of the voltage drop at the ends of the capacitor, said output signal being representative of a variation of the pulse width of the pulse-width modulation control signal. The variation of the pulse width is a function of the power or current absorbed by the electronic circuit under test.

Abstract: A device and system for detecting a touch panel are used for detecting a metal mesh on the touch panel, where row direction channels and column direction channels on the metal meshes each include a plurality of touch units which are connected with each other. In the device for detecting a touch panel, a signal transceiving component includes a signal generating unit and a signal receiving unit, which are configured to be arranged on the same side of the metal meshes in preset relative positions, and send and receive a signal through capacitive coupling with the metal mesh, respectively; a defect detecting unit is configured to detect each of a plurality of touch units in the metal meshes based on a detection signal received by the signal receiving unit.

Abstract: A method for evaluating a Hot Carrier Injection (HCI) effect of a device is provided. The method includes, a ratio of a substrate current to a drain current of a first device at different gate-source voltages is acquired, and recorded as a first current ratio; a ratio of a substrate current to a drain current of a second device at different gate-source voltages is acquired, and recorded as a second current ratio, the second device is subjected to process parameter adjustment or device parameter adjustment relative to the first device; and an influence of the process parameter adjustment or the device parameter adjustment on an HCI effect of the device is determined based on the second current ratio and the first current ratio.

Abstract: An apparatus is described for burn-in and/or functional testing of microelectronic circuits of unsingulated wafers. A large number of power, ground, and signal connections can be made to a large number of contacts on a wafer. The apparatus has a cartridge that allows for fanning-in of electric paths. A distribution board has a plurality of interfaces that are strategically positioned to provide a dense configuration. The interfaces are connected through flexible attachments to an array of first connector modules. Each one of the first connector modules can be independently connected to a respective one of a plurality of second connector modules, thereby reducing stresses on a frame of the apparatus. Further features include for example a piston that allows for tight control of forces exerted by terminals onto contacts of a wafer.

Abstract: A method for testing crosstalk effect includes: obtaining a test signal and an interference input signal; inputting the test signal into a crosstalk effect test circuit obtained by simulation, so as to obtain an interfered signal; and when a rise time of the interfered signal or a fall time of the interfered signal is greater than a preset time threshold, determining that an excessive crosstalk effect exists in an integrated circuit under test. The crosstalk effect test circuit includes a first circuit, N second circuits, and N capacitors. The first circuit is configured to simulate an interfered first signal circuit in the integrated circuit under test; the N second circuits are configured to simulate N second signal circuits that interfere with the first signal circuit in the integrated circuit under test.

Abstract: A radio-frequency receiver includes built-in-self-test (BIST) circuitry which generates a self-test signal. A local oscillator signal is divided. A self-test oscillation signal is generated, based, at least in part, on the frequency-divided local oscillation signal. The self-test signal is generated based on the self-test oscillation signal. The BIST circuitry includes a divider, which divides the self-test oscillation signal. The frequency-divided local oscillation signal and the divided self-test oscillation signal are used to perform one or more of generating the self-test oscillation signal and controlling the generation of the self-test oscillation signal. The radio-frequency receiver may be an automotive radar receiver.

Abstract: The disclosure describes a novel method and apparatus for improving interposers to include embedded monitoring instruments for real time monitoring digital signals, analog signals, voltage signals and temperature sensors located in the interposer. An embedded monitor trigger unit controls the starting and stopping of the real time monitoring operations. The embedded monitoring instruments are accessible via an 1149.1 TAP interface on the interposer.

Abstract: A test apparatus includes a test board, a unit, and a probe pin housed in the unit. First and second tip portions of the probe pin have the same shape as each other. A first external terminal of a first semiconductor package is brought into contact with the first tip portion of the probe pin and the second tip portion thereof is brought into contact with the terminal of the test board, thereby performing an electrical test of the first semiconductor package. Then, the unit is turned upside down and rearranged in the test apparatus. Thereafter, a second external terminal of a second semiconductor package is brought into contact with the second tip portion of the probe pin and the first tip portion thereof is brought into contact with the terminal of the test board, thereby performing an electrical test of the second semiconductor package.

Abstract: Embodiments of the present application provide a time offset method and device for a test signal. When a signal source sends a test signal to a DUT on a test platform, the offset device can determine a time delay caused by impedance matching of the test signal to the DUT at the upper side of each test location, and conduct time offset for TCK signals sent by the signal source to different DUTs according to the time delay.

Abstract: A delay estimation system estimates a delay of a DUT for an emulation system. The delay estimation system receives logic blocks of the DUT and a combinatorial path connecting one or more of the logic blocks. The system applies a delay model to a feature vector representing the combinatorial path, where the delay model can determine a delay of the combinatorial path. The delay model may be a machine learning model. The system generates a timing graph using the determined delay and provides the timing graph to a compiler to perform placement and routing of the DUT.

Abstract: An integrated circuit (IC) chip device includes testing interface circuity and testing circuitry to test the operation of the IC chips of the IC chip device. The IC chip device includes a first IC chip that comprises first testing circuitry. The first testing circuitry receives a mode select signal, a clock signal, and encoded signals, and comprises finite state machine (FSM) circuitry, decoder circuitry, and control circuitry. The FSM circuitry determines an instruction based on the mode select signal and the clock signal. The decoder circuitry decodes the encoded signals to generate a decoded signal. The control circuitry generates a control signal from the instruction and the decoded signal. The control signal indicates a test to be performed by the first testing circuitry.

Abstract: An automated test equipment (ATE) apparatus comprising a tester processor operable to generate commands and data for coordinating testing of a plurality of devices under test (DUTs). The ATE further comprises a field programmable gate array (FPGA) communicatively coupled to the tester processor, wherein the FPGA comprises routing logic operable to route signals associated with the commands and data in the FPGA based on a type of the device under test (DUT). Further, the ATE comprises a connector module communicatively coupled to the FPGA comprising a socket to which the DUT connects and further comprising circuitry for routing the signals to a set of pins on the DUT, wherein the set of pins are associated with a first type of DUT. The circuitry can support multiple different DUT types having a common form factor but different pinout assignments.

Abstract: A testing system includes a truck carrying a circuit breaker, a fixed contact, and an actuator piston connected to a movable contact. A test platform supports the truck in a contact testing position and includes a sensor circuit mounted on the test platform and positioned under the truck and aligned with the circuit breaker when the truck is on the test platform in the contact testing position. The sensor circuit is configured to acquire displacement data of the actuator piston when the movable electrical contact is moved between the open and closed positions. A controller is coupled to the sensor circuit and configured to receive the displacement data and determine electrical contact erosion within the circuit breaker.

Abstract: A relay state determination device according to the present invention includes: a voltage value acquisition unit that measures every moment a detected voltage detected from two ends of a shunt resistor; a voltage value difference calculation unit that calculates a voltage value difference between a first voltage value of when the detected voltage becomes minimum by an armature starting displacement after a primary-side switch is turned off and a second voltage value of when secondary-side contacts are opened; and a state determination unit that determines that a relay has deteriorated when the voltage value difference falls below a predetermined threshold value.

Abstract: A battery monitoring module may be arranged in such a way as to receive a sensor signal from a light sensor configured to detect light within a battery module. The battery monitoring module may determine, using processing circuitry, a light characteristic within the battery module based on the sensor signal. The battery monitoring module may determine, using processing circuitry, a battery condition of the battery module based on the light characteristic.

Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator. (A1): a table map OCV vs. SOC characteristics. (A2): HF vs. SOC initial characteristics. The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).

Abstract: In various implementations, a housing for a battery tester may include a body with a first side and an opposing second side. The first side may include a presentation member, such as a screen and an input member. The screen may include a touch screen and/or the input member may include a keypad, such as a keypad with arrows. The second side may be magnetic such that the battery tester can be coupled to a magnetic surface. The second side may, in some implementations, include holster(s) that allows clamps to be stored in the holster. The holster(s) may be removable.

Abstract: A battery state estimation apparatus calculates a measured DC resistance value of a DC resistance based on a current change amount and a voltage change amount, which are calculated in a predetermined period using measured current value and voltage value. The battery state estimation apparatus further calculates (i) a non-temperature dependent constant and (ii) a constant of a temperature dependent function based on (i) an estimated DC resistance value and (ii) the measured DC resistance value. The estimated DC resistance value is an estimated value of the measured DC resistance value; the estimated DC resistance value is represented as a sum of (i) the non-temperature dependent constant Ra, which indicates a temperature independent component of the DC resistance of the secondary battery, and (ii) the temperature dependent function Rb, which indicates a temperature dependent component of the DC resistance of the secondary battery.

Abstract: A battery pack, a method of heating a battery cell and an electrical combination. The battery pack may include a housing; a battery cell; a heating element operable to provide heat to the battery cell; a temperature sensing device operable to sense a temperature of an interior of the battery pack; a heating switch operable to control whether power is provided to the heating element; and an electronic processor configured to receive a signal from the temperature sensing device, the signal indicating the temperature of the interior of the battery pack, determine that the temperature of the interior of the battery pack is less than a predetermined temperature threshold, and in response to determining that the temperature of the interior of the battery pack is less than the predetermined temperature threshold, close the heating switch to provide power to the heating element.

Abstract: The present disclosure discloses a system for vehicle battery life diagnosis, the system comprised of a measuring unit which is installed inside a vehicle and measures a state of charge change and a temperature of a vehicle battery, a calculating unit which calculates battery relaxation voltage when a battery power line is cut off, and a diagnosis unit which uses the state of charge change and temperature measured at the measuring unit and the battery relaxation voltage calculated at the calculating unit to diagnose battery life and status.

Abstract: A circuit for parameter PSRR measurement includes a filter, a first regulator and a second regulator. The filter may be configured for receiving an AC input signal and a DC input signal, and for outputting a combined output signal according to the AC input signal and the DC input signal. The first regulator may be configured for receiving the combined output signal, and for outputting a first output signal having a first AC component signal and a first DC component signal. The second regulator may be configured for receiving the first output signal, and for outputting a second output signal having a second AC component signal and a second DC component signal. A parameter PSRR of the second regulator may be obtained according to a ratio between the second AC component signal and the first AC component signal.

Abstract: A diagnostic system for diagnosing faults in a power inverter including a power loss estimating module configured to calculate a power loss of one or more components of the power inverter. A junction temperature estimating module is configured to output an estimated junction temperature of the one or more components of the power inverter. A plurality of temperature sensors is configured to sense a plurality of temperatures of a plurality of inverter legs, respectively. A health indicator generating module is configured to generate a plurality of health indicators in response to the estimated junction temperature and the plurality of sensed temperatures of the plurality of inverter legs. A fault identification module is configured to selectively identify one of an inverter fault, a temperature sensor fault, and no fault in response to the plurality of health indicators.

Abstract: Provided is an apparatus and method for protecting against unsafe electric current conditions. An example method includes accessing a selected operating mode for a heating element of the electric grill using at least one user input device of the electric grill, the heating element connected to a voltage line and a neutral line; measuring, using a temperature probe, a temperature of the heating element; estimating an ambient temperature at a location within a cook box of the electric grill spaced apart from the heating element, the estimation of the ambient temperature based on the measured temperature of the heating element; and using the estimated ambient temperature to determine when a target temperature corresponding to the selected operating mode is reached.

Abstract: A test point adaptor includes a body having a first and second end along a longitudinal axis. The second end includes an outer conductive sleeve. A cap includes a sleeve and a terminator. The body includes a first and second interface at the first and second ends, respectively. A center conductor extends though the body from the first interface toward the second interface. The second end includes a conical contact surface of the outer conductive sleeve. The cap matingly engages the second interface. The second end includes an electrically conductive contact member in electrical contact with the center conductor and a gripping arrangement electrically coupled with the electrically conductive contact member. The cap includes a conical contact surface to engage the conical contact surface of the outer conductive sleeve. A terminator is received by the gripping arrangement, which electrically couples the terminator to the center conductor.

Abstract: A monitoring system for a power grid includes one or more power transformer monitors. Each power transformer monitor includes a plurality of optical sensors disposed on one or more optical fibers that sense parameters of the power transformer. Each optical sensor is configured to sense a power transformer parameter that is different from a power transformer parameter sensed by at least one other sensor of the plurality of optical sensors. An optical coupler spatially disperses optical signals from the optical sensors according to wavelength. A detector unit converts optical signals of the optical sensors to electrical signals representative of the sensed power transformer parameters.

Abstract: A plug status detection circuit, a controller, and a vehicle are provided, to detect a plug status in different standards by using one detection circuit. The plug status detection circuit includes a wake-up circuit and a sampling circuit. The wake-up circuit is configured to immediately output or delay outputting a wake-up signal based on a resistance value of a connected resistor of the plug status detection circuit when a plug is connected to a socket, where the wake-up signal is used to trigger a CPU to drive the sampling circuit. The sampling circuit is configured to inject a startup voltage under the drive of the CPU, and after the startup voltage is injected, a level of a detection point of the sampling circuit is used to indicate a plug status.

Abstract: Disclosed is a magnetometer architecture that couples one or more coils to a magnetic yoke to allow the reset of the magnetic yoke and one or more magnetic field sensors simultaneously after, for example, exposure to a large stray magnetic field. Also, disclosed is a magnetometer architecture that integrates separate magnetic pole pieces offset from the yoke that are each wound by a reset coil to allow reset of the one or more magnetic field sensors.

Abstract: A magnetic detection device that comprises an amplification circuit amplifying a detection signal from a magnetic sensor that is positioned, for example, in a location where an alternating current magnetic field enters as noise, and detects an alternating current magnetic field targeted for monitoring, said magnetic detection device further comprising: timer circuits that are activated in response to a change in the output of the amplification circuit, and if these clock a prescribed time, the outputs thereof change; a logic circuit that treats the outputs of the timer circuits as inputs; and an oscillation circuit for generating an operation clock signal for the timer circuits. The timer circuits are structured such that if the output of the amplification circuit changes to a different direction before the clocking of the prescribed time is complete, the timer circuits are reset.

Abstract: Systems, methods, apparatuses and non-transitory, computer-readable mediums are disclosed for short-range position tracking using a stationary magnetic field gradient. In an embodiment, a method comprises: obtaining, by a sensing array of a device worn or held by a user in an environment, a measurement of a stationary magnetic field generated by a magnetic source in the environment, the stationary magnetic field being independent of an ambient magnetic field in the environment; determining based on the measurement, a change in the magnetic field over time; determining based on the measurement, a change in the magnetic field over distance; obtaining, by the processor, a rotation angle of the device; determining a velocity of the device based on the change in the magnetic field over time, the change in the magnetic field over distance and the rotation angle of the device; and integrating the velocity to obtain a position of the device.

Abstract: A magnetic field generator includes: an upper layer resonance coil composed of a first conductive material and forming a loop circuit having a coil portion; a lower layer coil composed of a second conductive material and forming a loop circuit having a coil portion arranged opposite to the coil portion of the upper layer coil at a predetermined distance; and a substrate supporting the upper layer coil and the lower layer coil and having a dielectric material between the upper layer coil and the lower layer coil. A high-frequency current is supplied to the lower layer coil and a high-frequency current having a phase opposite to that of the high frequency current supplied to the lower layer coil flows through the upper layer coil. A length per loop of the coil portion in the upper layer coil and the coil portion in the lower layer coil is matched to one wavelength of the high-frequency current.

Abstract: A method for measuring magnetic characteristics is the method including applying a first magnetic field to a continuously moving magnetic recording medium to magnetically saturate the magnetic recording medium, applying a first polarized light to a surface of the magnetic recording medium to which the first magnetic field is being applied, and measuring a light polarization state of a first reflected light that is reflected, applying a second magnetic field having an opposite direction of the first magnetic field to the continuously moving magnetic recording medium to magnetically saturate the magnetic recording medium, applying a second polarized light to the surface of the magnetic recording medium to which the second magnetic field is being applied, and measuring a light polarization state of a second reflected light that is reflected, applying a third magnetic field having an opposite direction of the second magnetic field to the continuously moving magnetic recording medium, applying a third polarized li

Abstract: An integrated hybrid rotary assembly is configured to provide power, torque and bi-directional communication to a rotatable sensor, such as a lidar, radar or optical sensor. A common ferrite core is shared by a motor, rotary transformer and radio frequency communication link. This hybrid configuration reduces cost, simplifies the manufacturing process, and can improve system reliability by employing a minimum number of parts. The assembly can be integrated with the sensor unit, which may be used in vehicles and other systems.

Abstract: Magnetic angular sensor device destined to sense an external magnetic field, the sensor device including a plurality of magnetic sensor elements, each sensor element including a magnetic tunnel junction containing a ferromagnetic reference layer having a reference magnetization that is pinned in a pinning direction, a ferromagnetic sense layer having a sense magnetization that can be oriented in an external magnetic field, and a tunnel barrier spacer layer, between the reference layer and the sense layer; wherein the sense layer of at least a portion of said plurality of sensor elements comprises an in-plane uniaxial sense magnetic anisotropy having an easy axis that is aligned substantially parallel to the pinning direction, such that an angular deviation in the alignment of the direction of the sense magnetization in the external magnetic field is minimized for a range of external magnetic field.

Abstract: A magnetic sensor includes an MR element. The MR element includes a free layer. The free layer has a first surface having a shape that is long in one direction and a second surface located opposite the first surface, and has a thickness that is a dimension in a direction perpendicular to the first surface. The first surface has a first edge and a second edge located at both lateral ends of the first surface. In a given cross section, the thickness at the first edge is smaller than the thickness at a predetermined point on the first surface between the first edge and the second edge.

Abstract: A magnetic resonance tomography (MRT) unit includes a field magnet, a transmitter, and a transmitting antenna. The MRT unit also has a transmission interference suppression facility with a transmission interference suppression controller, a plurality of sensors, and a transmission interference suppression antenna. The transmission interference suppression facility is configured to pick up, with the sensors, an excitation signal of the transmitter, determine, with the transmission interference suppression controller, a transmission interference suppression signal as a function of the excitation signal of the transmitter, and emit the signal via the transmission interference suppression antenna, so that at a predetermined location outside of the MRT unit, an electromagnetic alternating field of an excitation signal emitted by the transmitter via the transmitting antenna is attenuated.

Abstract: Systems, apparatuses, and methods for the transit of a superconducting magnet are provided. The apparatuses may include a compressor configured to compress a cryogen after the cryogen cools a superconducting magnet in the transit of the superconducting magnet. The compressed cryogen may be used to cool the superconducting magnet. The apparatuses may also include a power supply device configured to provide power to the compressor and a thermal management system configured to in thermal communication with the compressor. The apparatuses may further include a container configured to accommodate at least one of the compressor, the thermal management system, and the power supply device.

Abstract: A magnetic resonance imaging (MRI) system includes a set of magnet coils for generating a magnetic field. The set of magnet coils are composed of a superconducting material. The system further includes a mechanical cryocooler in thermal contact with the set of magnet coils and operable to reduce and maintain a temperature of the set of magnet coils below a transition temperature of the superconducting material, and an energy storage device coupled to the set of magnet coils. The energy storage device may be capable of receiving and storing energy dissipated from the set of magnet coils during rapid shutdown of the set of magnet coils. The system may also include a controller coupled to the energy storage device. The controller may be programmed to recharge the set of magnet coils using the energy stored in the energy storage device during the rapid shutdown of the set of magnet coils.

Abstract: Systems and methods for operating a magnetic resonance imaging (MRI) system are provided. The MRI system includes a magnetics system and a power system configured to provide power to at least some of the magnetics system. The power system includes an energy storage device and a power supply configured to receive mains electricity. The MRI system also includes at least one controller configured to control the MRI system to operate in accordance with a pulse sequence at least in part by generating, by using power supplied by the power supply and supplemental power supplied by the energy storage device, at least one gradient field using at least one gradient coil of the magnetics system.

Abstract: A method for producing a streak-suppressed MR image of a subject includes (i) generating an interference correlation matrix from M coil images, (ii) producing eigenvectors of the interference correlation matrix, and (iii) determining, from the subspace-eigenvectors, a projection matrix of the interference null space. The subspace-eigenvectors include a plurality of subspace-eigenvectors that span an interference subspace and a plurality of null-space-eigenvectors that span an interference null space.

Abstract: A three-dimensional magnetic resonance image dataset of an object is acquired using a multi-shot imaging protocol in which several k-space lines are acquired in one shot. The three-dimensional k-space includes a central region and a periphery, wherein the sampling order of k-space lines differs between the central region and the periphery. At least one k-space line from each shot passes through the central region, whereas the periphery includes regions, which are sampled by k-space lines from a subset of the plurality of shots.

Abstract: Methods, computing devices, and MRI systems that reduce artifacts produced by Maxwell gradient terms in TSE imaging using non-rectilinear trajectories are disclosed. With this technology, a RF excitation pulse is generated to produce transverse magnetization that generates a NMR signal and a series of RF refocusing pulses to produce a corresponding series of NMR spin-echo signals. An original encoding gradient waveform comprising a non-rectilinear trajectory is modified by adjusting a portion of the original encoding gradient waveform or introducing a zero zeroth-moment waveform segment at end(s) of the original encoding gradient waveform. During an interval adjacent to each of the series of RF refocusing pulses a first gradient pulse is generated. At least one of the first gradient pulses is generated according to the modified gradient waveform. An image is constructed from generated digitized samples of the NMR spin-echo signals obtained.

Abstract: An optical-electronic integrated RF leakage interference cancellation system and method for continuous wave radars belongs to the technical filed of radars. The optical-electronic integrated RF leakage interference cancellation system cancels the RF leakage interference by integrating of the microwave photonic link and the cable link. The microwave photonic link implements the phase adjustment, time delay adjustment and amplitude adjustment of the microwave signal tapped from the continuous wave source in the transmitter and realizes the cancellation matching conditions of the out of phase, the matching delay time and the same amplitude with the leakage interference signal. It has the advantages of broad frequency band, large bandwidth, and high tuning resolution, which enables the effective suppression of the RF leakage interference and ensures the high transmit-to-receive isolation for continuous wave radars.