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9038483 Wireless passive radio-frequency strain and displacement sensors  
Wireless strain and displacement sensors wirelessly monitor structural health and integrity, and are made by printing inductor-interdigital capacitor sensing circuits on a variety of substrates,...
9024624 Multi-field magnetic tracking  
A magnetic tracking system includes a first set of magnetic field generators configured to produce a first magnetic field having a first shape within a three dimensional region and at least a...
9013177 Programmable analog filter  
A programmable analog filter includes a crossbar array with a number of junction elements and a filter circuit being implemented within the crossbar array. At least a portion of the junction...
9000756 Steering position sensor and method for using the same  
A rotation sensor assembly includes a rotated component rotatably coupled with a base. The rotation sensor assembly includes a transmitter and a receiver. The transmitter is coupled with the base...
8994367 Differential transformer type magnetic sensor  
A differential transformer type magnetic sensor is disclosed. The drive coil includes a planar coil arranged on a substrate. The first differential coil includes a planar coil arranged on the...
8994366 Magnetically tracked sensor  
A magnetic field sensor assembly includes a hollow cylindrical core, conductive material and at least first and second lead wires. The hollow cylindrical core is made of ferromagnetic material and...
8988066 Steering position and torque sensor  
A sensor circuit for use with a shaft assembly rotatably mounted in a housing and having an input shaft, an output shaft and a torsion bar which connects the input and output shafts together. A CR...
8981764 Rolling bearing sensor with anti-rotational means  
A rolling bearing sensor, especially a rotational speed sensor, having a housing and a signal pick-up which is arranged in the housing in a manner secured against rotation and is arranged, with...
8947074 Inductive position sensor  
An inductive position sensor uses three independent inductors inductively coupled by a common medium such as air. First and second inductors are separated by a fixed distance with the first...
8928310 Magnetoelectronic angle sensor, in particular a reluctance resolver  
The present invention relates to a reluctance resolver (100) with an at least partially soft magnetic stator (104) and an at least partially soft magnetic rotor (102) which oppose each other by...
8912789 Magnetic force microscope and magnetic field observation method using same  
A magnetic force microscope capable of measuring the absolute value of a magnetic field with high resolution without causing a change in magnetization state of the probe. The magnetic force...
8884609 Circuit arrangement for determining the closing instant of a valve with a coil which actuates an armature  
A circuit arrangement determines the closing instant of a valve with a coil that actuates an armature. The circuit has a voltage divider with at least three resistors connected to a measuring node...
8878523 Inductive detection encoder and digital micrometer  
An inductive detection encoder according to the present invention includes: first and second members which are oppositely disposed so as to relatively move in a measurement direction; a...
8854034 Position detector and position detection method  
A position detector having a plurality of sensor units is used. Each of the sensor units is configured to determine positions. The sensor units are selectively used for outputting positions of a...
8803511 Gearbox position detection  
The invention relates to a motor vehicle gearbox position detector comprising a sensor (3) designed to cooperate with a moving target (5) connected to a gearbox ratio actuation element so as to...
8797025 Compensation methods for digital source-measure-units (SMUs)  
A source-measure unit (SMU) may be implemented with respective digital control loops for output voltage and output current. The output voltage and output current may be measured with dedicated...
8796965 Commutation calibration via motor mapping  
A DC brushless motor includes a rotary actuation shaft having multiple poles. Each of the poles has multiple commutation steps. The DC brushless motor also includes a motor controller capable of...
8773115 Blade tip clearance measurement sensor for gas turbine engines  
An electromagnetic field sensor assembly for blade tip clearance measurement in a gas turbine engine is disclosed that includes a ceramic sensor body, a multi-layered wire coil wound about a...
8754638 Rotation sensor and rotational angle detection apparatus  
A resolver includes three resolver coils, which are arranged spaced apart in a circumferential direction of a rotor, and an excitation coil that generates a magnetic field to induce voltages in...
8729887 Rotation angle sensor  
A rotation angle sensor comprises: a resolver stator including an excitation coil for receiving an excitation signal and a detection coil (a sine wave coil and a cosine wave coil) for outputting a...
8723509 Electromagnetic position and orientation sensing system  
Magnetic tracking systems and methods for determining the position and orientation of a remote object. A magnetic tracking system includes a stationary transmitter for establishing a reference...
8710826 Systems and methods for sensing external magnetic fields in implantable medical devices  
Systems and methods for sensing external magnetic fields in implantable medical devices are provided. One aspect of this disclosure relates to an apparatus for sensing magnetic fields. An...
8692542 Variable reluctance resolver and angle detecting system therewith  
A VR resolver with a shaft angle multiplier of 3× has a rotor core 104 that is provided with magnetic poles 104a and 104b, which project in a radial direction, and a magnetic pole 104c, which does...
8692541 Position sensing head with redundancy  
A position sensing head combines a sensing element and a simplified electronic module to enable operation with one wire, in addition to a circuit common, for providing power and transmitting a...
8674685 Magnetic flux oil level sensor for use in aircraft lubrication systems  
A magnetic flux position sensor includes a primary coil, a secondary coil, and a magnetic flux conductor. The primary coil generates a magnetic flux and the secondary coil senses magnetic flux....
8665211 Position detecting device and position input device  
A position detecting device is provided, which is configured to minimize leakage of magnetic flux in an electromagnetic induction system. The position detecting device includes: a sensor unit...
8664959 Mobile system for measuring abnormality detection parameters of a switch in a high voltage electrical substation  
There is provided a method for measuring abnormality detection parameters of a disconnect switch, comprising: releasably connecting a first sensor to the disconnect switch, the first sensor...
8631168 Input selection mechanism for a display device  
A television includes at least two ports (e.g. HDMI ports). The television polls the ports before presenting a user interface that displays some or all of the ports and before toggling between any...
8587293 Coil position detection  
A simple position determination is enabled by a device and a method to determine the position of a local coil in a magnetic resonance apparatus, wherein at least one signal emitted by at least one...
8570028 Transducer for a position sensor  
A transducer has a magnetic field concentrating member a first coil to couple with a first portion of the magnetic field concentrating member positioned adjacent the first coil and a second coil...
8558541 Monitoring system of conveyor belt  
A monitoring system including rubber magnets 41 to 44 provided inside of a belt 1, and magnetic sensors 51 and 52 provided outside of the belt 1, and magnetic forces generated by the rubber...
8558538 Blade tip clearance measurement sensor for gas turbine engines  
An electromagnetic field sensor assembly for blade tip clearance measurement in a gas turbine engine is disclosed that includes a ceramic sensor body, a multi-layered wire coil wound about a...
8542006 Movement detection circuit of solenoid shear seal valve on subsea pressure control system and method of detecting movement of solenoid actuator  
A solenoid current monitoring circuit of a solenoid actuator includes a solenoid drive board configured to receive a control signal, a sensing resistor configured to detect a current signal of a...
8531182 Control system and method for providing position measurement with redundancy for safety checking  
A control system for use in safety critical human/machine control interfaces is described, more particularly a joystick type control system and particularly a joystick type control system...
8489015 Waveguide-based wireless distribution system and method of operation  
The design and use of a simplified, highly efficient, waveguide-based wireless distribution system are provided. A low-loss waveguide is used to transport wireless signals from a signal source or...
8421447 Position sensor  
An electromagnetic induction type rotary encoder includes an excitation board including an excitation coil, a detection board fixed to a movable element to face the excitation board and including...
8415945 Sheet coil type resolver  
A sheet coil type resolver includes: a stator section in which a stator transformer coil composed of first and second stator transformer coil layers is disposed to axially overlap with a resolver...
8410775 Methods and apparatus to detect location and orientation in an inductive system  
A base station (e.g., a central device including a transducer assembly of one or more orthogonal transducers) transmits a magnetic field at a known power level and direction. The magnetic field...
8395377 Vibration and condition monitoring system and the parts thereof  
A vibration and condition monitoring system, with true digital signal processing based design, with very limited analog based general signal conditioning and integrated specific sensor...
8339126 Position-measuring device for determining relative positions and method of its operation  
A position-measuring device includes a measuring standard, on which at least one graduation track is applied, and a support member. Disposed on the support member is at least one exciter winding...
8334689 Inductive displacement or rotational angle sensor with a screening plate arranged between two coils  
An inductive displacement or rotational angle sensor including at least one electrical coil which is provided with turns, and an influencing element which interacts with said coil and produces a...
8314608 Method of determining distance to a ferrous material  
In one aspect of the present invention a method of determining a distance to a ferrous material comprises providing a plurality of magnetometers spaced at varying distances from a ferrous...
8269484 Inductance-type rotation angle sensor, method of manufacturing the same, and intake control system for engine including the same sensor  
An inductance-type rotation angle sensor includes: a stator formed by printing an annularly formed magnetic conductor and a receiving conductor placed adjacent to the magnetic conductor on a...
8264218 Wing flap sensor unit  
A wing flap sensor unit (2) having a position sensor (18) for detection of a rotation position of a shaft for operation of wing flaps and having a housing (4) which surrounds the position sensor...
8258777 Inductive proximity sensor  
The present invention relates to an inductive proximity sensor that includes an oscillator having first and second inductor-capacitor circuits arranged such that an inductance of one of the...
8258782 Angle detecting apparatus and angle detecting method  
An angle detecting apparatus includes a rotor fixed to a rotating shaft, a pair of magnetic sensors arranged close to the outer periphery of the rotor so as to have a difference in angle (π/2)...
8253410 Protective system for a multiple channel transformer probe  
The invention provides a transformer probe for sensing movement of a body of magnetic material, having multiple output channels wherein the output in each output channel is substantially...
8228028 Systems and methods for compensating for large moving objects in magnetic-tracking environments  
Methods for accurately tracking position and orientation of a magnetic-field sensor in a tracking volume when a large magnetic-field distorter is present in the tracking volume. In some of the...
8228056 Automatic determination of the position of an object  
The invention relates to a method for analysis of magnetic fields or signals used for the determination of the position of an object, wherein two temporally to each other shifted magnetic signals...
8217601 Robust rotational position alignment using a relative position encoder  
A robust method for detecting a relative position of a feedback device, such as an encoder or resolver, coupled to a shaft, such as a motor shaft, is provided. To detect the relative position,...