Abstract: An encoder scale, displaced relative to a detector head, includes: an insulating substrate; a conductive adhesive layer that is formed on the insulating substrate; and conductive pattern layers that are formed on the adhesive layer in a shape enabling the detector head to detect a position, wherein: the adhesive layer electrically connects all the pattern layers and includes an out-of-detection-range pattern that extends outward from a position detection range of the detector head; and the out-of-detection-range pattern is grounded via a conductive member.

Abstract: In one aspect, a magnetic field sensor includes first and second magnetic field sensing elements having respective first and second maximum response axes. The first and second maximum response axes point along respective first and second different coordinate axes. In response to a magnetic field, the first and second magnetic field sensing elements are operable to generate first and second magnetic field signals. The magnetic field sensor includes an electronic circuit coupled to receive the first and the second magnetic field signals. The electronic circuit is configured to determine a magnitude of a vector sum of the first and the second magnetic field signals and provide one or more signals in response to the magnitude of the vector sum determined.

Abstract: An electromagnetic (EM) receiver system for measuring EM signals. The EM receiver system includes a frame; a first EM receiver attached to the frame and configured to measure the EM signals within a first frequency range; and a second EM receiver attached to the frame and configured to measure the EM signals within a second frequency range. Corresponding axes of the first and second EM receivers are substantially parallel to each other.

Abstract: A distance measurement system includes a tank circuit including a transmit coil coupled to a transmit capacitor, a distance calculation circuit coupled to the transmit coil, and a target resonant circuit including a receive coil coupled to a receive capacitor. The receive coil is to receive a magnetic field generated by the tank circuit. The distance calculation circuit is to determine a reflected admittance. The reflected admittance includes a real component and an imaginary component. The distance calculation circuit is to determine a distance between the transmit and receive coils based on the imaginary component of the reflected admittance.

Abstract: A multi-frequency inductive sensing system can be used for spectrographic material analysis of a conductive target material (such as tissue) based on electrical impedance spectroscopy. An inductive sensor can be driven with an excitation current at multiple sensor excitation frequencies (?) to project a time-varying magnetic field into a sensing area on the surface of the target material, inducing eddy currents within the target material. The inductive sensor can be characterized by a sensor impedance Z(?) as a function of the sensor excitation frequency (?), and the resulting induced eddy currents. Multiple sensor impedance Zs(?) measurements, at the multiple sensor excitation frequencies (?), can be determined, which represent electromagnetic properties of the target material (such as permittivity ?, permeability ?, and resistivity ?), based on the induced eddy currents.

Abstract: A cam is immersed in water at an elevated temperature and/or pressure. A reciprocating cam follower also immersed in the water contacts a surface of the cam. The cam follower includes a permanent magnet. An electrically conductive coil is magnetically coupled with the permanent magnet such that movement of the cam follower induces an electrical signal in the electrically conductive coil. A sealed housing also immersed in the water contains the electrically conductive coil and seals it from contact with the water. Leads of the coil are electrically accessible from outside the sealed housing and from outside the water. Alternatively, the cam includes magnetic inserts, the cam follower is replaced by a sensor arm of magnetic material, and the sensor arm and/or the inserts are magnetized whereby rotation of the rotary element causes time modulation of the magnetic coupling and induces coil voltage.

Abstract: A device includes a diamond assembly. The diamond assembly includes a diamond with a plurality of nitrogen vacancy centers and electrical components that emit electromagnetic waves. The device also includes a light source configured to emit light toward the diamond and a photo detector configured to detect light from the light source that traveled through the diamond. The device further includes an attenuator between the diamond assembly and the photo detector. The attenuator is configured to attenuate the electromagnetic waves emitted from the electrical components of the diamond assembly.

Abstract: A method of identifying a direction of a multilayer ceramic capacitor includes the steps of transporting a plurality of multilayer ceramic capacitors in one line before each of a magnetism generator and a magnetic flux density measurement instrument, measuring a magnetic flux density with the magnetic flux density measurement instrument at the time when each of the plurality of multilayer ceramic capacitors passes before the magnetic flux density measurement instrument, and identifying a direction of stack of the multilayer ceramic capacitors based on the magnetic flux density measured in the step of measuring a magnetic flux density.

Abstract: Disclosed are methods and systems for conditioning electrodes while deployed in the sea with a marine electromagnetic survey system. An embodiment of the method may comprise deploying electrodes in seawater during a marine electromagnetic survey. The method further may comprise coupling at least one of the electrodes to a controllable current/voltage source while the electrodes are deployed in the seawater. The method further may comprise sending a first conditioning signal from the controllable current/voltage source to the at least one of the electrodes coupled to the controllable current/voltage source.

Abstract: When miniaturizing an ammeter or wattmeter, a magnetoresistance effect element given a barber-pole electrode could be considered an efficient device. It was considered that a barber-pole electrode formed at 45° with respect to an axis of easy magnetization (the longitudinal direction of a rectangular-shaped element) would be the most efficient. Current is refracted, however, when the current passes through the boundaries of substances with different conductivity, so a barber-pole electrode formed at 45° is not the most efficient. According to the invention, it is possible to provide a highly efficient magnetoresistance element having a rectangular magnetic film whereupon an axis of easy magnification is induced in the longitudinal direction, and a barber-pole electrode which is formed upon the magnetic film at an oblique angle ? to the longitudinal direction, where the magnetoresistance element takes into account current refraction at the boundary between the electrode and the magnetic film.

Abstract: The present invention relates to an apparatus and a method for influencing and/or detecting magnetic particles in a field of view (28), in particular for examination of human patients.

Abstract: A magnetic positioning device includes a magnetic scanning unit and a magnetic sensing unit. The magnetic scanning unit is for forming a first magnetic surface and a second magnetic surface. The first magnetic surface and second magnetic surface rotatably form a detection space. The magnetic sensing unit is disposed in the detection space for recording a first time point and a second time point. The magnetic sensing unit is in contact to the first magnetic surface at the first time point and defines a first-angle data. The magnetic sensing unit is in contact to the second magnetic surface at the second time point and defines a second-angle data. The first-angle data and the second-angle data define a location data of the magnetic sensing unit in the detection space with respect to the magnetic scanning unit, wherein the first time point is not the same as the second time point.

Abstract: An electronic absolute position encoder comprises a scale, a detector and a signal processing configuration. The scale comprises a signal modulating scale pattern including a first periodic pattern component having a spatial wavelength ?1, and a second periodic pattern component having a spatial wavelength ?2. The detector comprises a set of first wavelength sensing elements comprising a first filtering subset of first wavelength sensing elements and a second filtering subset of first wavelength sensing elements including complementary pairs of sensing elements spaced apart by an integer number times 180 degrees of the spatial wavelength ?2. The detector comprises a set of second wavelength sensing elements comprises a first filtering subset of second wavelength sensing elements and a second filtering subset of second wavelength sensing elements including complementary pairs of sensing elements spaced apart by an integer number times 180 degrees of the spatial wavelength ?1.

Abstract: A method for marine seismic surveying includes separating up-going and down-going wavefields from seismic energy emitted by at least one marine seismic energy source. The separated up-going and down-going wavefields are propagated from the at least one marine seismic energy source to at least one of a water surface and a common reference depth. One of the up-going and down-going wavefields is phase shifted 180 degrees. The propagated, phase shifted up-going and down-going wavefields are summed.

Abstract: Embodiments related to the generation of magnetic bias fields for magnetic sensing are described and depicted. In one embodiment, a sensor includes at least one magnetosensitive element, and a magnetic body with an opening, the magnetic body comprising magnetic material magnetized mainly in a vertical direction, the magnetic body having inclined surface sections shaped by the opening, wherein the sensor is arranged atop the opening.

Abstract: At least one embodiment relates to magnetic field sensors being operable at different calibration modes, wherein the magnetic sensor is capable of switching between the different calibration modes during normal operation of the sensor. The switching may be possible in response to different motion types detected within the sensor. Such sensors may be used in vehicles such as cars, the sensors for example being part of the engine control system or the ABS. Another embodiment relates to a method of changing calibration modes during operation of sensors.

Abstract: A non-ferrous shaft includes multiple non-integral ferrous tooth components, thereby allowing a sensor to detect the shaft speed.

Abstract: For some embodiments, a system includes a moveable structure, moveable in at least a linear direction relative to a supporting structure, a magnetic field sensor assembly including a magnetic field sensor, and a magnet, wherein one of the magnet and the magnetic field sensor is coupled to the moveable structure, and wherein the other of the magnet and the magnetic field sensor assembly is coupled to the supporting structure, and wherein the magnetic field sensor assembly is configured to determine the relative position of the magnet to the magnetic field sensor.

Abstract: The invention provides a sensor device comprising a nanowire electrode and a faradic shield, said faradic shield is adapted to prevent unwanted capacitive charging current in said sensor. The nanoelectrode device design with a metallic Faradic Shield layer significantly reduces the noise levels, increase the sensitivity of the sensors and allow measurements to be undertaken in less than 1 second.

Abstract: A chain sensor comprising at least one coil and a device for measuring the chain elongation comprising two chain sensors and a control unit, are provided. In addition, a method of measuring the chain elongation of a chain with two chain sensors arranged along the chain in spaced relationship with one another is provided. The chain sensor comprises at least one first reluctance sensor. The first reluctance sensor has a magnetically conductive yoke body comprising a central leg and two yoke legs extending laterally thereto. The yoke legs are each provided with at least two teeth, the teeth of the yoke legs being adapted to be arranged in closely spaced relationship with a chain. The first reluctance sensor includes at least one permanent magnet.