Abstract: Applying a bias magnetic field to a solid-state spin sensor enables vector magnetic field measurements with the solid-state spin sensor. Unfortunately, if the bias magnetic field drifts slowly, it creates noise that confounds low-frequency field measurements. Fortunately, the undesired slow drift of the magnitude of the bias magnetic field can be removed, nullified, or cancelled by reversing the direction (polarity) of the bias magnetic field at known intervals. This makes the resulting solid-state spin sensor system suitable for detecting low-frequency (mHz, for example) changes in magnetic field or other physical parameters.

Abstract: In a method for monitoring a line, a measuring signal is fed into a measuring conductor at a start time. The measuring signal is reflected at an interference point or at a line end and the reflected portion is monitored to check whether a threshold value is exceeded. If the threshold value is exceeded, a digital stop signal is generated and the transit time between the start time and the stop signal is analyzed.

Abstract: Techniques for environmental contaminant monitoring are disclosed. In some embodiments, a contaminant detection system electronically instigates a test circuit that shares an environment with another circuit to induce an electrical anomaly in the test circuit when environmental contamination is present. While electronically instigating the first circuit, the contaminant detection system monitors for an electrical anomaly indicative of the environmental contamination. Responsive to detecting an electrical anomaly in the test circuit that is indicative of environmental contamination, the contaminant detection system generates an alert that indicates that the second circuit has likely been exposed to the environmental contamination. The contaminant detection system may provide early warning of potentially caustic environments before creep corrosion or similar phenomena manifest in expensive hardware resources. Thus, hardware outages may be mitigated or avoided.

Abstract: A current sensor includes a substrate, a first bus bar, and a second bus bar. The first bus bar includes a first terminal portion, a first rising portion, a first extending portion, a first cutout portion, and a first stepped portion. The second bus bar includes a second terminal portion, a second rising portion, a second extending portion, a second cutout portion, and a second stepped portion. The second stepped portion and the second rising portion are connected together. A second magneto-electric conversion element is mounted on the lower surface of the substrate. A first magneto-electric conversion elements is mounted on the upper surface of the substrate.

Abstract: A dynamic measuring system is described that comprises a measuring device. The measuring system has an acquisition unit and a post processing unit that is configured to post process the digital signal. The post processing unit has at least one signal correction filter being configured to be operated in at least two different modes for processing the digital signal. The signal correction filter has at least a first signal correction filter setting being used in a first mode and a second signal correction filter setting being used in a second mode. In addition, the measuring system has a switching unit that is configured to select the first mode or the second mode, the switching unit being configured to be operated dynamically based on an event in the data signal. The signal correction filter comprises time variable coefficients. Further, a method for probing a dynamic data signal is also described.

Abstract: A method and a system are disclosed for obtaining imaging data using a MRI system configured to provide accurate images with high Signal-to-Noise Ratio (SNR) using superconducting magnets with field strengths in the range of 0.5 Tesla (T) to 3 T. The MRI includes a scanning bore deployed within a Cryogen-Free (CF) conduction-cooled superconducting magnet. The CF may have two stages, in which one stage cools a radiation shield down to a mid-level temperature, such as 35-80 degrees Kelvin (K), and the second stage cools the cold-mass further down to about 3-6 degrees K. The two-stage CF cryocooloer is used to cool target bodies of the superconducting magnet system and the receiving RF coil to create a higher SNR relative to when RF coils are not cooled. Sapphire sheets or bars may be used to cool the RF coils because sapphire conducts heat but not electricity, reducing electrical noise.

Abstract: An energy supply for a test device includes an energy source configured to provide energy via an inductive element for use by test circuitry; and an energy recovery circuit electrically couplable to the energy source and configured to direct unused energy from the inductive element to the energy source.

Abstract: A method of distributing an electrically insulating liquefied gas mixture to high-voltage electrical equipment from a storage means containing an insulating gas mixture, including: heating the insulating gas mixture to a temperature such that the contents of the storage means are a homogeneous fluid; and withdrawing the insulating mixture resulting from step a) to fill high-voltage electrical equipment by raising the temperature of the mixture resulting from step a), wherein, during step b), a set value for regulation is applied at variable pressure, calculated in real time based on weighing the storage means, when the change in the set value of pressure is less than 0.2 bar per 1 kg/m3 of change in density, and then a set value for regulation is applied at constant temperature until the storage means is emptied of its content.

Abstract: A probe card board in the present disclosure includes a plurality of through holes designed to receive a probe brought into contact with a measurement object. The probe card board is composed of silicon nitride based ceramics. The probe card board includes a first surface opposed to the measurement object and a second surface located opposite to the first surface. The probe card board contains a plurality of crystal phases of metal silicide. Metal constituting the metal silicide is at least one kind selected from among molybdenum, chrome, iron, nickel, manganese, vanadium, niobium, tantalum, cobalt and tungsten.

Abstract: A display device including: a panel unit including N data lines; and a data line driver unit including N channels, wherein the data line driver unit includes a channel amplifier unit, and a short detection device for detecting whether or not a short has occurred between two data lines among the N data lines, wherein N is an integer of 2 or more.

Abstract: Disclosed herein are methods and systems that use magnetic complexes in wellbore monitoring. A well monitoring system may comprise magnetic complexes disposed in a subterranean formation, wherein the magnetic complexes each comprise a first magnetic portion, a second magnetic portion, and a spacer portion; and an electromagnetic interrogator, wherein the electromagnetic interrogator comprises an electromagnetic source and an electromagnetic detector.

Abstract: There is described a method for testing equipment using a test box unit and a mate-in interface having a unique mate-in interface ID, the equipment comprising a plurality of contacts. The method comprises connecting a mate-in interface to the test box unit, connecting the mate-in interface to the contacts of the equipment; selecting a mate-in interface for testing using the unique mate-in interface ID; in the mate-in interface as selected, selecting any one of the contacts for testing; and testing the any one of the contacts of the selected mate-in interface to ground and against each other one of the contacts by inputting a signal and measuring the signal through the selected mate-in interface. There can then be automatically created a list of connections for the equipment making use of the detected or otherwise obtained unique mate-in interface ID.

Abstract: A method and system for pad alignment may comprise disposing a downhole tool into a borehole, taking a measurement with the electrode with at least one operating frequency, correcting the measurement to account for local formation dip, constructing a window with a predetermined size H, identifying a number of adaptive filters to be utilized, extracting one or more frequency components from the measurement with the adaptive filters, identifying a semblance value of a reference dataset and a target dataset, assembling the semblance values for the reference dataset and the target dataset, identifying the semblance values of the reference dataset and target datasets over the range of relative pad shifts, identifying a pad shift, and forming one or more images of the pad shirt or the semblance of the reference dataset and target data set. The system may comprise a mandrel, one or more pads, and electrodes.

Abstract: A device for determining impedance at a data pin of a communication interface. In one embodiment, the device includes a current source configured to selectively inject a test current to the data pin. The device also includes a sensing circuit for sensing a first test voltage corresponding to a voltage at the data pin without the test current injected, and a second test voltage corresponding to another voltage at the data pin with the test current injected. The sensing circuit determines the impedance at the data pin based on the first test voltage and the second test voltage.

Abstract: An integrated fluxgate magnetic gradient sensor includes a common mode sensitive fluxgate magnetometer and a differential mode sensitive fluxgate magnetometer. The common mode sensitive fluxgate magnetometer includes a first core adjacent to a second core. The first and second cores are wrapped by a first excitation wire coil configured to receive an excitation current that affects a differential mode magnetic field. The differential mode sensitive fluxgate magnetometer includes a third core adjacent to the first core and a fourth core adjacent to the second core. The third and fourth cores are wrapped by a second excitation wire coil configured to receive an excitation current that affects a common mode magnetic field.

Abstract: Polarizable diamond materials and methods for obtaining nuclear magnetic resonance spectra of samples external to the diamond materials are described. The diamond materials can include 12C, 13C, substitutional nitrogen, and nitrogen vacancy defects in a crystalline lattice, wherein the substitutional nitrogen concentration is between 10 ppm and 200 ppm, the nitrogen vacancy concentration is between 10 ppb and 10 ppm, and the 13C concentration is greater than 1.1% and not more than 25%. Methods for obtaining nuclear magnetic resonance spectra can include optically pumping a diamond material to generate electron spin hyperpolarization in nitrogen vacancy centers, transferring the electron spin hyperpolarization to nuclei of the sample, and generating a nuclear magnetic resonance spectrum by applying a magnetic field to the sample, exciting the sample with a radio frequency pulse, and detecting a nuclear magnetic resonance response from the sample.

Abstract: A wafer inspection method was provided. A motorized chuck stage is controlled by a control rod to be displaced between an upper position and a lower position of an adjustment range along a Z-axis direction, to change a relative position of a wafer on the motorized chuck stage relative to a probe. The control rod is movable between an upper limit position and a lower limit position in a displacement range. The wafer inspection method includes: determining a position of the control rod in the displacement range based on a measurement signal; determining a moving direction and a moving distance of the control rod based on a change of the measurement signal; generating a control signal based on the moving distance of the control rod; and controlling, based on the control signal, the motorized chuck stage and a camera stage to be displaced the same distance.

Abstract: A liquid crystal display includes source lines and gate lines, pixel electrodes, switching elements, a source driver, a gate driver, and a failure inspection circuit. The source lines and the gate lines are disposed in a lattice form. The pixel electrode is disposed in a pixel region defined by the source line and the gate line. The switching element is disposed corresponding to the pixel electrode. The source driver drives the source lines. The gate driver drives the gate lines. The failure inspection circuit is connected to the source lines or the gate lines, and performs inspection of the source lines or the gate lines. The failure inspection circuit includes monitor input signal lines, monitor output signal lines, a determination circuit that detects voltage levels of output signals from the monitor output signal lines, and an expected value comparison circuit that compares outputs from the determination circuit with expected values.

Abstract: Miniaturized current sensors are disclosed herein. The miniaturized current sensors may employ a coiled coil and a return coil around the current path to be measured. The miniaturized current sensors may be integrated to microelectronic devices and components.

Abstract: A metal detector detects when a target that is a desirable metal object is located within a medium. A signal is transmitted into the medium. A response signal is received from the medium. The response signal includes a secondary medium response signal from the medium and includes a secondary target response signal from the target when the target is located within the medium. The response signal is amplified to produce an amplified signal. Compensation circuitry perform transmit coil transfer function compensation on the amplified signal to produce a compensated signal. A notch module removes a resistive component of the secondary medium response signal from the compensated signal. A signal vector resistive component demodulator produces a vector resistive component output signal from output of the notch module. A vector reactive component demodulator produces a vector reactive component output signal from the output of the notch module.