Abstract: A wheel speed sensor may comprise a magnet; an induction coil coupled to the magnet; a rotor comprising a plurality of teeth, wherein the magnet is disposed proximate the plurality of teeth; a gear system coupled to the rotor comprising an initial gear, wherein the initial gear may be configured to be coupled to a wheel and configured to rotate at a speed equal to a wheel rotational speed of the wheel. The gear system may be configured to cause a rotor rotational speed of the rotor to be greater than the wheel rotational speed in response to the wheel rotating.

Abstract: Methods and systems of electromagnetic sensing in a wellbore are presented in this disclosure for monitoring annulus fluids and water floods. An array of transmitters and one or more receivers are located along a casing in the wellbore. A transmitter in the array and one of the receivers can be mounted on a same collar on the casing forming a transmitter-receiver pair. The receiver can receive a signal originating from the transmitter and at least one other signal originating from at least one other transmitter in the array, wherein the signal is indicative of a fluid in the wellbore in a vicinity of the transmitter-receiver pair and the at least one other signal is indicative of another fluid in a formation around the wellbore. The receiver can further communicate, via a waveguide, the signal and the at least one other signal to a processor for signal interpretation.

Abstract: Measuring probe for non-destructive measuring of the thickness of thin layers, in particular in cavities, which are accessible by an opening or on curved surfaces, with a measuring head, which includes at least one sensor element and at least one contact spherical cap, assigned to the sensor element on a surface, to be checked, of the cavity, and with a gripping element for positioning and guiding the measuring probe on and/or along the surface to be measured, wherein on the gripping element, a long, elastically yielding guide bar is provided, which accepts the at least one measuring head on its end opposing the gripping element, in such a way that it is moveable with at least one degree of freedom in relation to the guide bar.

Abstract: Methods and systems are provided for sensing particulate matter by a particulate matter (PM) sensor positioned downstream of a diesel particulate filter in an exhaust system. In one example, a PM sensor may include a pair of protruding interdigitated electrodes on a surface of the sensor and further include a plurality of flow guides also protruding from the surface of the sensor. By staggering the flow guides across the interdigitated electrodes, soot may be accumulated across multiple pathways and thereby, soot may be accumulated uniformly across the sensor surface.

Abstract: Systems and methods are provided herein for performing a self-test of a magnetic field sensor using internal diagnostic components for fault detection. The magnetic field sensor includes a magnetic sensing element coupled to a sensor biasing current source and a switching network coupled to the magnetic sensing element. The switching network includes one or more diagnostics switches and one or more signal switches, and the one or more diagnostic switches are coupled to a diagnostic input current source. The switching network is configured to generate a time-multiplexed signal having a magnetic signal responsive to an external magnetic field in a magnetic signal time period and a diagnostic signal in a diagnostic signal time period. The diagnostic signal may be operable to produce an intermediate signal to have a predetermined sequence between a first state and a second state.

Abstract: The present invention relates to an apparatus for calibrating a power measuring system for power transformers. The general inventive concept involves the two reference measuring systems that are known from the prior art for the calibration of a current transformer, a voltage transformer and an evaluation device being integrated in a shared apparatus, according to the invention, for calibrating a power measuring system for power transformers, which apparatus is furthermore arranged on a container such that the apparatus can be moved by means of a trailer that holds the container for the purpose of in-situ calibration of the power measuring system of power transformers.

Abstract: A method for locating electrostatic discharges occurring on an aircraft in flight including a step of recording, during the flight of the aircraft, electromagnetic signals resulting in the electrostatic discharges and received by a plurality of detectors arranged at different places on an exterior surface of the aircraft, a step of analyzing the signals recorded during the flight, each of the signals, received by the various detectors and corresponding to one and the same electrostatic discharge, are processed to identify at least one zone of an exterior surface of the aircraft, determining a structural part in which the electrostatic discharge probably occurred.

Abstract: An electronic apparatus for measuring a frequency of an electromagnetic signal emitted from a coordinate indicating device contacting a sensor pad, and method are provided. The electronic apparatus includes a signal receiving unit that receives the electromagnetic signal, a band-pass filter unit including a pair of band-pass filters that generates a first filtered signal and a second filtered signal by respectively filtering the electromagnetic signal in a first frequency range and a second frequency range corresponding to a center frequency of the coordinate indicating device, and a controller that acquires a frequency value of the electromagnetic signal based on a ratio value between the first filtered signal and the second filtered signal.

Abstract: The disclosure relates to a device for measuring resistivity to be mounted on a downhole tool and comprising: a watertight body, a first electrode and a second electrode electrically insulated from the first electrode and surrounding the first electrode, arranged in the body at a proximal end of the device, an electrical connecting module arranged in the body and comprising a first contacting element electrically coupled to the first electrode and a second contacting element electrically coupled to the second electrode, surrounding the first contacting element, with interposition of an electrically insulating material between the first and second contacting element; wherein the electrical connecting module projects from the body at a distal end of the device so as to form an electrical interface.

Abstract: An example system includes a circuit board having electrical elements; a wafer having contacts; and an interconnect to route signals between the electrical elements and the contacts. The interconnect includes multiple layers, each of which includes a flexible circuit. The flexible circuit includes a conductive trace disposed thereon. The interconnect also includes shielding between adjacent layers of the multiple layers. The shielding is electrically connected to ground.

Abstract: A computer-implemented method includes, by one or more processors in electronic communication with a tunneling magnetoresistive sensor, wherein the tunneling magnetoresistive sensor is a component of a magnetic storage drive configured to read magnetic data from a magnetic storage medium, detecting a short across the tunneling magnetoresistive sensor, measuring a change in resistance of the tunneling magnetoresistive sensor, measuring a change in voltage amplitude for the tunneling magnetoresistive sensor, and dividing said change in voltage amplitude by said change in resistance to yield a ratio. The computer-implemented method further includes, responsive to the ratio being greater than a predetermined ratio threshold, determining that the short is caused by a magnetic shunt. A corresponding computer program product and computer system are also disclosed.

Abstract: Embodiments provide systems and methods for determining a position of a gear shift lever of a vehicle. A ferromagnetic target object having selected characteristics influences a magnetic field generated by a back bias magnet. A magnetic field sensor includes magnetic field sensing elements disposed proximate to the target object. Each magnetic field sensing element generates an electronic signal in response to sensed magnetic fields. The gear shift lever moves among a plurality of gears of the vehicle. The magnetic field sensor selects a set of the magnetic field sensing elements to determine a magnetic field difference based on a difference of amplitudes between the electronic signals that is related to a current position of the gear shift lever. Characteristics of the target object enable the magnetic field sensor to detect the position of the gear shift lever. The characteristics include edges proximate to a perimeter of the target object.

Abstract: A computer-implemented method includes, by one or more processors in electronic communication with a tunneling magnetoresistive sensor, wherein the tunneling magnetoresistive sensor is a component of a magnetic storage drive configured to read magnetic data from a magnetic storage medium, detecting a short across the tunneling magnetoresistive sensor, measuring a change in resistance of the tunneling magnetoresistive sensor, measuring a change in voltage amplitude for the tunneling magnetoresistive sensor, and dividing said change in voltage amplitude by said change in resistance to yield a ratio. The computer-implemented method further includes, responsive to the ratio being greater than a predetermined ratio threshold, determining that the short is caused by a magnetic shunt. A corresponding computer program product and computer system are also disclosed.

Abstract: A computer-implemented method includes, by one or more processors in electronic communication with a tunneling magnetoresistive sensor, wherein the tunneling magnetoresistive sensor is a component of a magnetic storage drive configured to read magnetic data from a magnetic storage medium, detecting a short across the tunneling magnetoresistive sensor, measuring a change in resistance of the tunneling magnetoresistive sensor, measuring a change in voltage amplitude for the tunneling magnetoresistive sensor, and dividing said change in voltage amplitude by said change in resistance to yield a ratio. The computer-implemented method further includes, responsive to the ratio being greater than a predetermined ratio threshold, determining that the short is caused by a magnetic shunt. A corresponding computer program product and computer system are also disclosed.

Abstract: Elongated flexible probes can be disposed in holes of upper and lower guide plates of a probe card assembly. Each probe can include one or more spring mechanisms that exert normal forces against sidewalls of holes in one of the guide plates. The normal forces can result in frictional forces against the sidewalls that are substantially parallel to the sidewalls. The frictional forces can reduce or impede movement parallel to the sidewalls of the probes in the holes.

Abstract: The invention provides for a magnetic resonance imaging system (100) configured for acquiring magnetic resonance data (142) from an imaging zone (108) according to a PROPELLER magnetic resonance imaging protocol. The pulse sequence is configured such that the pulse sequence data for each of the multiple blades of magnetic resonance data comprises coil specific magnetic resonance data (145, 146?, 146?, 146??) acquired for each of multiple antenna elements simultaneously (125, 126?, 126?, 126??). The magnetic resonance imaging system is further configured to perform the following for each blade: reconstruct (214) a blade image (150, 150?) from the coil specific magnetic resonance data for each antenna element according to a parallel imaging magnetic resonance imaging protocol, construct (218) a Chi map (153, 154?) for the blade image using the set of coil sensitivities, the blade image, and the coil specific magnetic resonance data.

Abstract: A method for identifying fractures from measurements made by a multi-axial electromagnetic induction tool in a wellbore traversing subsurface formations includes determining a value of a fracture orientation indicator from in line components of the multi-axial electromagnetic induction measurements made transverse to a tool axis, and parallel to the tool axis. The tool axis is substantially parallel to a bedding plane of the subsurface formations. A value of a vertical fracture indicator is determined using the in line components of the multi-axial electromagnetic induction measurements made transverse to the tool axis, and parallel to the tool axis.

Abstract: A resolver includes: a stator core; and an insulator that is mounted on the annular stator core, wherein a terminal pin base that extends outward in a radial direction is integrally formed in the insulator, wherein a plurality of terminal pins are disposed on the terminal pin base, wherein each of the terminal pins has a first connecting portion at one end and a second connecting portion at the other end, wherein first and second covers are provided on the terminal pin base at each sides in an axial direction, wherein the first connecting portion and the second connecting portion of the terminal pin are sealed in a filler which fills a first space and a second space, the first space being formed between the first cover and the terminal pin base, and the second space being formed between the second cover and the terminal pin base.

Abstract: Methods and systems are provided for sensing particulate matter by a particulate matter (PM) sensor positioned downstream of a diesel particulate filter in an exhaust system. In one example, a PM sensor assembly may include rows of flow guides separated from each other by a gap where each of the flow guide includes a positive and negative electrode formed on opposite side surfaces. By aligning projections in the gap between successive flow guides, exhaust PM may be circulated in the gap between the electrodes for a longer time, thus increasing the probability of capture across the electrodes, and thereby increasing the sensitivity of the assembly to detection of exhaust PM.

Abstract: A voltage detecting probe includes: a shield barrel that is a barrel-shaped member made of an electrically conductive material and has an insertion concave for inserting a wire formed in a front end thereof by cutting away an outer circumferential wall at the front end along a direction perpendicular to an axis; and a detection electrode that is formed of a cylindrical member made of an electrically conductive material, whose front end surface and outer circumferential surface are covered with an insulating covering, and is housed inside the shield barrel and capable of moving relative to the shield barrel along the axis direction. When the detection electrode has been moved relative to the shield barrel and the front end surface is positioned at the insertion concave, the front end surface becomes capacitively coupled, via the insulating covering, with a wire inserted in the insertion concave.