Abstract: A fault detection system for detecting a fault condition in a direct current (DC) system. The system may include a transmitter including a DC source to energize a cable and a receiver connected to the cable and including a signal generator to generate a periodic signal. The transmitter may include a termination impedance matched to the characteristic impedance of the cable to absorb substantially all the periodic signal. The transmitter may include a fault detection circuit coupled to the cable to detect changes in the frequency response of the cable by tracking changes in the envelope of the power of the periodic signal and outputting a fault signal if the rate-of-change of the envelope of the power of the period signal exceeds a threshold level.

Abstract: The present invention discloses a method for evaluating a metallogenic potential of a skarn deposit based on the magnetite composition, including collecting geological, geophysical, geochemical, and remote sensing data in a studying area, systematically, and delineating a favorable area for mineralization; collecting magnetite-bearing samples in the favorable area for mineralization, and describing the lithology, alteration and mineralization characteristics of each sample; selecting the most representative magnetite samples for chemical analysis to obtain average contents of trace elements Ti, Ni, V, K and Al+Si+Mg, denoted as c(Ti), c(Ni), c(V), c(K), and c(Al+Si+Mg) in ppm; and calculating discriminant factors F1, F2, F3, and F4 by substituting data, and performing discrimination; and when the four discriminant factors all discriminate the metallogenic potential to be better, determining the skarn deposit in the favorable area for mineralization to have a good metallogenic potential; and discriminating as

Abstract: A method and apparatus for monitoring a thermal load in an enclosure including at least one electric device, the apparatus being configured to receive temperature data on a temperature outside the enclosure, temperature data on a temperature inside the enclosure and data indicative of heat generated by the at least one electric device into the enclosure, to determine a thermal resistance of the enclosure and/or a thermal capacitance of the enclosure on the basis of the received data, and to determine a cooling status of the enclosure on the basis of the determined thermal resistance of the enclosure and thermal resistance reference data and/or on the basis of the determined thermal capacitance of the enclosure and thermal capacitance reference data.

Abstract: Monitoring a specific absorption rate of a subject during a magnetic resonance tomography examination with a magnetic resonance tomography system with a multi-element coil with several transmission channels, comprising the following steps: monitoring the transmission channels with an initial monitoring system to obtain initial monitoring signals; monitoring a subset of the transmission channels with a second monitoring system to obtain second monitoring signals; comparing the second monitoring signals with the first monitoring signals of the transmission channels which belong to the subset monitored by the second monitoring system; repeating the previous steps, wherein a different subset is monitored in each case until second monitoring signals for all subsets of the transmission channels have been received by the second monitoring system and compared with the corresponding first monitoring signals; determining whether the first monitoring signals and the second monitoring signals match, and whether an upper

Abstract: Provided are a contact pin and a socket for inspection that can improve electrical performance or thermal performance. An embodiment includes: an electric conductive electrical contact extending from the base end to the tip and having an elastic deformation part elastically expandable and compressible in the extending direction formed between the base end and the tip; an electric conductive thermal contact extending from the base end to the tip and having an elastic deformation part elastically expandable and compressible in the extending direction formed between the base end and the tip; and an electrically conductive casing that bundles the electrical contact and the thermal contact laterally stacked adjacent to each other, and the casing is in contact with the electrical contact and the thermal contact so as to form a path bypassing the elastic deformation part.

Abstract: A method is provided for assessing health of a mechanical system. The method includes receiving discontinuous system data that is obtained intermittently and is associated with health of the system and generating a discontinuous health index that is based on the discontinuous system data and receiving continuous system data that is obtained continuously and is associated with the health of the system and generating a continuous health index that is based on the continuous system data, wherein the discontinuous health index and the continuous health index are configured to be combinable. The method further includes combining the discontinuous health index and the continuous health index, generating an overall health index based on the combination of the discontinuous health index and the continuous health index, and automatically taking one or more actions to maintain or improve health of the mechanical system and/or avoid risk based on the overall health index.

Abstract: A bracket assembly for supporting a pass-through current sensor with respect to a bus bar is disclosed. The bracket assembly has two sections which each contain channels that conform to the shape of one or more segment of the bus bar. The sections are configured to couple to one another over the segments such that the bracket assembly is clamped to the bus bar. An aperture in the current sensor is passed over the bus bar and the sensor is coupled to the bracket assembly, thereby indirectly coupling the bus bar to the sensor.

Abstract: A method can comprise: receiving, via a processor, scanner data from an inspection system for a bladed rotor, the scanner data including a point cloud defining an inspected bladed rotor, the scanner data including a first data size; generating, via the processor, a data set including section files spaced apart along a span of a blade based on the point cloud; determining, via the processor, a defect on the blade of the inspected bladed rotor based on the data set; and determining whether the defect meets serviceable limits.

Abstract: A sensor, comprising: a conductor having a curved portion; a first anchor magnetic field sensing element that is formed at an intersection of a first axis and a second axis that is substantially perpendicular to the first axis, the first magnetic field sensing element being formed on a space that is partially enclosed by the curved portion; a first magnetic field sensing element that is formed on the first axis, the first magnetic field sensing element being disposed on an opposite side of the conductor from the first anchor magnetic field sensing element; and a second magnetic field sensing element that is formed on the second axis, the second magnetic field sensing element being disposed on an opposite side of the conductor from the first anchor magnetic field sensing element.

Abstract: Planarity adjustment of RF microprobes in a load pull setup on wafer, using a low-profile impedance tuner that is mounted on a 3-axis tuner positioner under an angle matching the angle of the wafer probe is performed using a separation of the tuning module from the tuner housing and allowing it to rotate around an axis through the tips of the wafer microprobe. This renders the directly connected tuner autonomous and compatible with all existing probe stations.

Abstract: A pulse extraction device that can finely divide a waveform representing the charge amount (SOC) is provided. A pulse extraction device includes a pulse extraction part configured to extract a pulse based on a change point at which an increase or decrease changes in time series data of a charge amount of a secondary battery.

Abstract: A soil sensor includes a signal generator, and a transmitter coupled to the signal generator, the transmitter configured to transmit a signal from the signal generator, the signal having a fixed frequency, the transmitter including a transmit electrode embedded within a first dielectric material. The soil sensor includes a receiver, the receiver being configured to electrostatically couple to the transmitter through a channel including soil, the receiver including a charge variation (QVAR) electrode embedded within a second dielectric material. The soil sensor includes a charge variation (QVAR) sensor coupled to the QVAR electrode, the QVAR sensor configured to detect a variation in charge detected at the QVAR electrode in response to the signal from the signal generator and output a digital signal including the charge detected. And the soil sensor further includes a processing circuit coupled to the QVAR sensor and configured to determine a level of moisture in the channel based on the digital signal.

Abstract: A device may include a switch having a first position in which the switch connects a voltage source to the conductor segment and a second position in which the conductor segment is connected to operational electronics. A device may include a switch controller configured to change the switch between the first position and the second position. A device may include a current sensor configured to detect a leakage current from the conductor segment when the switch controller causes the switch to be in the first position.

Abstract: A magnetic resonance imaging (MRI) apparatus that includes a multi-resonance transmit/receive (T/R) switch, one switch design having a top side and a bottom side of a microstripline based hybrid coupler, a first pin diode, a second pin diode, four vertical transmission lines and six horizontal transmission lines arranged in a bended manner on the microstripline. The top side is associated with a first port and a second port, and electrically connected to the first pin diode and the second pin diode. The bottom side is associated with a third port and a fourth port, and electrically connected with the first pin diode and the second pin diode. The switch receives radio frequency (RF) pulses of different frequencies transmitted to and received from an MRI RF coil where the different frequencies are received concurrently and without tuning by the multi-resonance T/R switch from the MRI RF coil.

Abstract: A system for estimating moisture in soil includes a first antenna for transmitting RF signals, second antennas for receiving RF signals, and a controller configured to: emit, via the first antenna, RF signals at a plurality of frequency increments; determine a channel frequency response (CFR) based on amplitude attenuation and phase change of reflected RF signals detected by the second antennas; determine a power delay profile (PDP) for the second antennas based on the CFRs; extract a subset of the reflected RF signals using peak detection on the PDPs; and for each layer of the soil and for each of the subset of reflected RF signals, determine: i) a wavelength of the reflected RF signal in the layer, ii) an estimated depth of the layer, iii) a dielectric permittivity of the layer based on the wavelength, and iv) an estimated moisture content of the layer based on the dielectric permittivity.

Abstract: An irrigation system comprises a plurality of towers, a time domain reflectometry (TDR) unit, and a central controller. Each tower includes a successive one of a plurality of safety switches, with each safety switch being either closed or open. The safety switch of each tower is electrically connected to at least one safety switch of another tower. The TDR unit is electrically connected to at least one safety switch and is configured to output data regarding an open safety switch. The central controller is configured to receive data from the TDR unit, and determine, according to the data from the TDR unit, at least one of a location of the open safety switch and an identifier of the tower associated with the open safety switch.

Abstract: A speed signal converter circuit including an analog signal conditioning stage and a digital signal processing stage. The analog signal conditioning stage determines a voltage of an input speed signal, combines the voltage with an alternating current (AC) injection voltage signal having a set frequency to generate a combined voltage signal, and outputs a pulsed zero-crossing signal including a rising edge and a falling edge indicating a zero-crossing of the input speed signal based on the combined voltage signal. The digital signal processing stage determines a rising edge slope of the input speed signal and a falling edge slope of the input signal based on a rising edge and a falling edge of the pulsed zero-crossing signal, and determines an optimal edge among one of the rising edges or the falling edges based on a comparison between the rising edge slope and the falling edge slope.

Abstract: The present invention relates to a power bank having a function of providing a chargeable range of a battery pack, a battery pack charging system including the same, and a method therefor, and more particularly, to a battery pack charging system that provides information on how far the battery pack can be charged with charging power of the power bank through data communication between the power bank and the battery pack charged by receiving charging power from the power bank.

Abstract: A three-dimensional on-chip magnetic sensor includes first, second, and third coils. The first and second coils include respective planar spirals formed by metal layers and metal vias. Each planar spiral of the first coil includes first interconnected loops wound about a first axis, where neighboring first planar spirals are electrically connected to each other. Each planar spiral of the second coil includes second interconnected loops wound about a second axis, where neighboring second planar spirals are electrically connected to each other. The third coil has a planar spiral includes third interconnected loops that are wound about a third axis. Each electrically conductive coil is configured to produce a respective electromagnetic force (EMF) induced by an oscillating magnetic field, the respective EMF driving a respective alternating current (AC) through the respective readout circuit. Each readout circuit is configured to detect a respective peak voltage magnitude of the respective AC.

Abstract: Provided is a technique of identifying fluorescence emitted from a measurement target, with a simpler device configuration. A fluorescence detection device includes: a generating section that generates pulsed laser light which causes spin polarization and spin relaxation in a phosphor that emits fluorescence whose intensity varies according to magnetic resonance; and a modulating section that modulates the pulse frequency of the pulsed laser light.