Abstract: Systems, devices, and methods for determining a position of a target using an inductive position sensor are described. The inductive position sensor may include a rotor, two or more excitation coils, and two or more receive coils. Each of the coils and the rotor may be inductively coupled. The two or more receive coils may be configured to generate a received voltage which can be approximated by a sine waveform function of twice the rotor's position. The inductive position sensor may include a resonant component. The resonance component may be connected to one of the two or more excitation coils or the rotor. An integrated circuit may be configured to determine the position of the rotor based on the two or more received voltages.
Abstract: Methods and systems for implementing a rotation sensing device are provided. The rotation sensing device may include a magnet, a magnetic field sensor located in a fixed position relative to the magnet, the magnetic field sensor configured to sense a magnetic field of the magnet, and a flux conductor configured to alter the magnetic field of the magnet, wherein the flux conductor is mounted to a rotatable element. The magnet may be mounted in a fixed position relative to the flux conductor, and the magnetic field sensor may be configured to generate a signal based on a sensed strength of the magnetic field in accordance with rotation of the flux conductor.
Abstract: According to one embodiment, a robot device includes a robot and a station part. The robot is inserted into a gap between an outer peripheral surface of a first part of a first member and a second member surrounding the outer peripheral surface. The first member includes the first part and a second part. A step is formed between the first part and the second part. The station part includes an elevating mechanism. The elevating mechanism lowers the robot onto the outer peripheral surface of the first member on a lower stage side of the step, and raises the robot from the outer peripheral surface.
Abstract: Embodiments relate to apparatus (200) and methods for distinguishing data of a plurality of multidimensional magnetic field sensors (120). A first sensor arrangement (100-1) comprises a first magnetic field source (110-1) and a first multidimensional magnetic field sensor (120-1), wherein the first magnetic field source and the first magnetic field sensor are arranged relative to one another in a first manner characteristic for the first sensor arrangement. At least one second sensor arrangement (100-2) comprises a second magnetic field source (110-2) and a second multidimensional magnetic field sensor (120-2), wherein the second magnetic field source and the second magnetic field sensor are arranged relative to one another in a second manner characteristic for the second sensor arrangement.
Abstract: A detector for determining a faulty semiconductor component including a semiconductor component, a contact-via chain, which is situated laterally at a distance from the semiconductor component and which surrounds the semiconductor component in regions, a guard ring, which is situated laterally at a distance from the semiconductor component, and an evaluation unit, which is situated on the semiconductor component, wherein the evaluation unit is designed to apply an electrical voltage to the contact-via chain, in particular a permanent electrical voltage, to detect a resistance value of the contact-via chain and to produce an output signal when the resistance value of the contact-via chain exceeds a threshold value.
Abstract: A system for measuring and mapping sheet resistivity of the film on flat-panel has a frame, a collection of leveling chucks, a probe-mounting assembly, and a collection of four-point probes. The probe-mounting assembly is a frame that holds the four-point probes in place. The leveling chucks and the probe-mounting assembly are mounted onto the frame, within the probe chamber. The flat panel is positioned in between the probe-mounting assembly and the leveling chucks. The sheet resistivity measurement by each of the collection of four-point probes can be done by electrical switching instead of mechanical repositioning and the flat panel transportation to and from the measurement position only needs to be done in one round trip instead of two, thus much time is saved. Also, the leveling chuck's speed in pressing the flat panel against the collection of four-point probes can be well controlled to avoid damaging of the flat panel.
Abstract: Disclosed are an on-chip reliability monitor and method. The monitor includes a test circuit with a test device, a reference circuit with a reference device, and a comparator circuit. The monitor periodically switches from operation in a stress mode, to operation in a test mode, and back. During each stress mode, the test device is subjected to stress conditions that emulate the operating conditions of an on-chip functional device while the reference device remains essentially unstressed. During each test mode, the comparator circuit compares a parameter of the test device to the same parameter of the reference device and outputs a status signal based on the difference between the parameters. When the status signal switches values, it is an indicator that the functional device has been subjected to a predetermined number of power-on-hours. Optionally, multiple monitors can be cascaded together to more accurately monitor stress-induced changes over time.
February 23, 2018
Date of Patent:
October 1, 2019
John A. Fifield, Eric Hunt-Schroeder, Mark D. Jacunski
Abstract: In a magnetic resonance apparatus having a scanner that generates a basic magnetic field in an imaging volume, and an operating method to acquire data from an entirety of a recording volume, wherein the scanner has a global shim coil acting on the entire imaging volume, and a local shim coil acting, with the global shim coil, on a sub-volume containing a region of interest, a first adjustment volume is established that contains the recording volume. A smaller, second adjustment volume is established containing the region of interest, and at most, the sub-volume. Using a field map of the basic magnetic field that covers the first adjustment volume, shim currents are respectively identified for the global shim unit, for homogenizing the first adjustment volume, and for the local shim unit, for homogenizing the second adjustment volume, accounting for the effect of the first shim currents on the second adjustment volume.
Abstract: A remote wireless moisture sensing unit is insertable into soil. The sensing unit includes at least three capacitive sensors positioned at three spaced apart levels with respect to the surface of the soil. The capacitance of each sensor increases in the presence of increased moisture content of the soil proximate to the sensor. An analog multiplexer selectively routes each sensor to an input to a capacitively-controlled oscillator to cause the oscillator to generate a clock signal having a frequency responsive to the capacitance of the currently connected sensor and thus responsive to the moisture content proximate to the currently selected sensor. A processor generates a respective data value for the frequency corresponding to each sensor and transmits the data values for the sensors via a radio frequency transceiver. The data values are processed to determine the moisture content of the soil at the three sensor levels.
Abstract: A current sensor includes a bus bar through which an electric current to be measured flows, a first magnetic sensing element including a first magneto-sensitive portion including a magneto-resistive element, and a second magnetic sensing element including a second magneto-sensitive portion including a magneto-resistive element. Strength of a magnetic field generated by the electric current sensed by the first magneto-sensitive portion is different from a strength of the magnetic field sensed by the second magneto-sensitive portion. A first bias magnetic field is applied to the first magneto-sensitive portion and a second bias magnetic field in a direction opposite to a direction of the first bias magnetic field is applied to the second magneto-sensitive portion.
Abstract: The disclosure relates to the field of display devices and discloses a test fixture for a display device. The test fixture includes a fixing component, and a test component arranged detachably from the fixing component, wherein the fixing component includes a fixing component body, and a clamp arranged on the fixing component body to clamp the display device, and the test component is configured to be electrically connected with a circuit board of the display device.
Abstract: A flowmeter for use in a borehole that includes a transmitter and receivers spaced axially away from the transmitter. Energizing the transmitter creates electrical field lines that extend between the transmitter and the receivers, and that pass through fluid flowing past the flowmeter. The magnitude of the electrical field lines at each of the receivers is measured, and varies in response to different types of fluid flowing past the flowmeter, and changes in phase of the fluid. Example transmitters and receivers include coils and electrodes. The transmitters and receivers can define elongate arrays, where the arrays are arranged parallel to, oblique, or perpendicular to an axis of the borehole. Multiple array orientations provide a radial cross sectional image of the flowing fluid. Thus not only can multi-phase flow be detected, but the type of flow regime can be identified.
Abstract: A motor includes a rotational shaft, a bearing supporting the rotational shaft, a magnet including plural magnetic poles in a circumferential direction, a rotor core disposed inside the magnet, and a magnetic sensor. The magnet includes a projection portion projecting toward a side of the bearing with respect to the rotor core in a direction of the rotational shaft. The magnetic sensor is positioned between the rotor core and the bearing in the direction of the rotational shaft and is positioned inside an inner peripheral surface of the projection portion.
Abstract: Some embodiments disclosed herein include systems and method for verifying meter accuracy. The system may include an electric vehicle charging station that includes a submeter that measures an amount of energy discharged from the electric vehicle charging station and to a connected electric vehicle. A meter test device may also be connected to the electric vehicle charging station to determine the accuracy of the submeter in local time.
Abstract: A fully integral epoxy cap probe may comprise a body having a cavity disposed radially outward of a fan blade and comprising a first material, a frame disposed within the cavity and comprising a second material, a first sensor element and a ground plane disposed within the frame, the first sensor element and the ground plane comprising a third material, and a first soft lead in electronic communication with the first sensor element and the ground plane.
Abstract: A system for magnetic detection includes a magneto-optical defect center material comprising a plurality of magneto-optical defect centers, an optical light source, an optical detector, and a radio frequency (RF) excitation source. The optical light source is configured to provide optical excitation to the magneto-optical defect center material. The optical detector is configured to receive an optical signal emitted by the magneto-optical defect center material. The RF excitation source is configured to provide RF excitation to the magneto-optical defect center material. The RF excitation source includes an RF feed connector, and a metallic material coated on the magneto-optical defect center material and electrically connected to the RF feed connecter.
March 24, 2017
Date of Patent:
August 6, 2019
LOCKHEED MARTIN CORPORATION
Andrew Raymond Mandeville, Gregory Scott Bruce, Joseph W. Hahn
Abstract: Provide are compositions and methods for electromagnetic (EM) surveying of subsurface hydrocarbon reservoirs using a giant dielectric material as a contrast agent. An injection fluid composition for EM surveying may include an aqueous fluid and giant dielectric nanoparticles having a dielectric constant of at least 10000 in the 1 Hz to 1 MHz frequency range. EM surveying of a subsurface hydrocarbon reservoirs may be performed by introducing an injection fluid having the giant dielectric nanoparticles into the subsurface hydrocarbon reservoir and generating an image of the position of the injection fluid from a transit time of emitted EM energy that traveled through the reservoir.
November 7, 2017
Date of Patent:
July 30, 2019
Saudi Arabian Oil Company
Erika Shoemaker Ellis, Howard Khan Schmidt, Jesus Manuel Felix Servin
Abstract: An electromagnetic actuator (1) includes sensor magnets (21a, 21b) disposed correspondingly to plungers (11a, 11b), respectively. The electromagnetic actuator (1) further includes a sensor core (22) made of a magnetic material and disposed in a position through which magnetic fluxes from the plurality of sensor magnets (21a, 21b) can flow, and a magnetic sensor (23) that is disposed in a part of the sensor core (22) through which the magnetic fluxes of the plurality of sensor magnets (21a, 21b) can flow in common, and that detects the magnetic flux, which varies in accordance with respective positions of the plurality of plungers (11a, 11b).
Abstract: The present invention relates to a system for measuring conductivity in a multiphase fluid flow comprising a fraction of water, the system comprising a measuring section including means for emitting electromagnetic signals into a pipe containing said flow within at least one chosen frequency range and means for detecting resonant frequencies within said range. The measuring section comprising features for providing at least two resonanct frequencies within said at least one frequency range, the system also comprising means for based on at least a first resonant frequency and a first Q-factor related to the corresponding resonance peak as well as the Q-factor of a second resonance peak, calculating the conductivity of the water in said flow.
Abstract: An angle sensor includes a detection signal generation unit for generating detection signals, and an angle detection unit for generating a detected angle value on the basis of the detection signals. The angle detection unit includes a signal conversion unit for performing a conversion operation, and an angle operation unit for performing an angle operation. The conversion operation is to convert the detection signals into first and second operation signals. The angle operation is to calculate the detected angle value using the first and second operation signals. The conversion operation includes an operation using a correction-term-containing function which contains a correction term for reducing a first error or a second error occurring in the detected angle value. When the angle to be detected varies with a predetermined period, the first error varies with the predetermined period, whereas the second error varies with a period ½ the predetermined period.