| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324207140 | Diverse sensors | 18 |
| 20090115405 | Magnetic field angular sensor with a full angle detection - An integrated angular magnetic sensor apparatus for determining a magnetic field angle within two axes of a plane is formed on a substrate onto which two anisotropic magneto-resistive sensing elements and at least one magneto-resistive sensing element are fabricated. The two anisotropic magneto-resistive sensing elements are oriented such that the output voltages of a first and second of the anisotropic magneto-resistive sensing elements are a function of a first and second trigonometric function (a sine function) of the magnetic field angle to a reference axis. The at least one magneto-resistive sensing element on the substrate and having a fixed reference magnetization oriented with respect to the reference axis such that an output voltage of the at least one magneto-resistive sensing element provides a quadrant indicator for the magnetic field angle with respect to the reference axis. The quadrant indicator is a trigonometric function such as a sine or cosine function. | 05-07-2009 |
| 20110127995 | ROTATION SENSOR - A rotation sensor fixed to a sensor fixing member with simplified fixing system and excellent in water proofing property and vibration proofing property is provided. The rotation sensor includes a sensor unit having a magnetic sensor element for detecting rotation of a to-be-detected element provided in a rotating ring, a cable for drawing an output signal of the sensor element to the outside, and a substrate with an electroconductive region for electrically connecting the sensor element and a core line of the cable while the sensor element and the cable are fitted to the substrate. The substrate has at least one recess portion or projection portion engageable with a projection portion or recess portion in the sensor fixing member to fix the sensor unit to the sensor fixing member. A molding segment formed by molding is provided for covering the sensor unit. | 06-02-2011 |
| 20110298450 | Circuits and Methods for Generating a Threshold Signal Used in a Motion Detector - A circuit to detect a movement of an object provides a threshold selection module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described. | 12-08-2011 |
| 20110316528 | POSITION DETECTION DEVICE, TWO-DIMENSIONAL POSITION MEASURING APPARATUS, OPTICAL APPARATUS AND POSITION DETECTION METHOD - A position detection device includes a magnet and a magnetic detector. The magnet includes a first pole, a second pole, a third pole and a fourth pole. The first pole and the second pole are arranged spaced apart from each other and have a same magnetic polarity. The third pole and the fourth pole are arranged spaced apart from each other and have a magnetic polarity different from the magnetic polarity of the first pole and the second pole. The first pole faces the third pole. The second pole faces the fourth pole. The magnetic detector is configured to detect magnetism of the first pole, the second pole, the third pole, and the fourth pole. | 12-29-2011 |
| 20120007590 | SYSTEMS AND METHODS FOR PERFORMING VIBRATION ANALYSIS USING A VARIABLE-RELUCTANCE SENSOR - A balanced bridge variable-reluctance sensor with no internal circuit components, springs, or dielectric for performing vibration analysis in high-vibration, high-temperature, and other extreme environments. The present invention includes a variable-reluctance sensor in a vibration-sensing capacity. The present invention has inherently high reliability due to its simplicity. The sensor is solidly mounted to a structure that is being monitored and allows a vibration wave to pass through a floating sensor bridge. The sensor vibrates at the same frequency as the application being measured. | 01-12-2012 |
| 20120194175 | Sensor - The present invention is directed to a sensor with a body and a magnetic field sensor. The body includes a plurality of structures arranged in a first direction to effect a periodically varying magnetic field upon movement of the body in the first direction. The magnetic field sensor is configured to detect components of the magnetic field in a second direction and in a third direction, wherein the magnetic field sensor is arranged adjacent to the body such that the second direction is perpendicular to the first direction and such that the third direction is perpendicular to the first direction and to the second direction. | 08-02-2012 |
| 20120235672 | DEVICE FOR MEASURING THE ANGLE OF ROTATION OF TWO OBJECTS ROTATING IN RELATION TO EACH OTHER - Device for measuring the rotating angle of two objects rotating in relation to each other, with a transmitter which is assigned to one of the objects and which emits light that is either polarized or becomes polarized by means of a polarization filter, and with a polarization-sensitive analyzer such that the transmitter and the analyzer rotate relative to each other as dependent on the rotating angle, and with a receiver which measures the intensity of light passing through the analyzer in order to create a signal that is dependent on the rotating angle, where a magnetized element is positioned on one of the objects and a sensor for detecting a magnetic field is positioned on the other object. | 09-20-2012 |
| 20130063135 | MAGNETIC-FIELD-ANGLE MEASUREMENT DEVICE AND ROTATIONAL-ANGLE MEASUREMENT APPARATUS USING SAME - In a magnetic-field angle detection device and a rotation angle detection device in which the accuracy of the measured angle is not degraded even if the MR ratio of the tunneling magnetoresistance element is increased. In a magnetic-field-angle measurement apparatus including a magnetic-field-angle detection circuit and a magnetic sensor having a tunneling magnetoresistance element with a pinned magnetic layer, the magnetic-field-angle detection circuit has a power-supply unit that outputs a constant voltage as a bias voltage to the tunneling magnetoresistance element of the magnetic sensor and a current-detection unit that detects an output current of the tunneling magnetoresistance element. The accuracy of the measured angle of the magnetic-field angle detection device and the rotation angle detection device is improved by measuring the tunneling magnetoresistance element current while maintaining the terminal voltage of the tunneling magnetoresistance element constant with input impedance of the current-detection unit as zero. | 03-14-2013 |
| 20130241536 | Magnetic Logic Units Configured to Measure Magnetic Field Direction - An apparatus includes circuits, a field line configured to generate a magnetic field based on an input, a sensing module configured to determine a parameter of each circuit, and a magnetic field direction determination module configured to determine an angular orientation of the apparatus relative to an external magnetic field based on the parameter. Each circuit includes multiple magnetic tunnel junctions. Each magnetic tunnel junction includes a storage layer having a storage magnetization direction and a sense layer having a sense magnetization direction configured based on the magnetic field. Each magnetic tunnel junction is configured such that the sense magnetization direction and a resistance of the magnetic tunnel junction vary based on the external magnetic field. The parameter varies based on the resistances of the multiple magnetic tunnel junctions. The magnetic field direction determination module is implemented in at least one of a memory or a processing device. | 09-19-2013 |
| 20130278247 | ARC POSITION ENCODER WITH AN EXTENDED ANGULAR POSITION SENSING RANGE - Disclosed are techniques for sensing an angular position of a rotating object over a 360-degree angular position range using an arc position encoder comprising a 180-degree angular position sensing range. The encoder may include a base defined by first and second ends, one or more magnetic field sensors disposed within the base between the first and second ends, one or more of first and second base extensions disposed on the first and second ends, and one or more polarity transition sensors disposed within the one or more of the first and second base extensions. The encoder may further include a magnetic target having first and second magnetic poles disposed on opposite ends so as to generate a uniform magnetic field, wherein the magnetic target is coupled to the rotating object so as to rotate about an axis of rotation located in a center of a circle defined by the base. | 10-24-2013 |
| 20140015520 | 180-DEGREE ARC POSITION ENCODER WITH AN EXTENDED ANGULAR POSITION SENSING RANGE - This disclosure describes techniques for sensing an angular position of a rotating object over an angular position range that includes up to 360 degrees using an arc position encoder comprising a substantially 180-degree angular position sensing range. The encoder may include a base comprising an arc length defined by a first and a second end, one or more magnetic field sensors disposed within the base between the first and second ends, and one or more polarity transition sensors also disposed within the base between the first and second ends. The encoder may further include a magnetic target that includes first and second magnetic poles disposed on opposite ends so as to generate a uniform magnetic field, wherein the magnetic target is coupled to the rotating object so as to rotate about an axis of rotation located substantially in a center of a circle defined by the base. | 01-16-2014 |
| 20140055128 | 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 or the rotated component. The transmitter generates a magnetic field including a sinusoidally time-varying dipole near-field corresponding to an excitation signal having a first phase value. The receiver is coupled with the other of the rotated component or the base. The receiver detects the magnetic field and generates a reception signal based on the magnetic field with a second phase value corresponding to a rotation angle of the rotated component relative to the base. The receiver is mechanically isolated from the transmitter. A rotation angle module is coupled with the transmitter. The rotation angle module, for instance a phase detector, measures the rotation angle of the rotated component based on the phase difference in the first and second phase values. | 02-27-2014 |
| 20140253106 | OFF-CENTER ANGLE MEASUREMENT SYSTEM - A method for measuring an angular position of a rotating shaft, the method including providing a magnetic field which rotates with the shaft about an axis of rotation, positioning an integrated circuit having first and second magnetic sensing bridges within the magnetic field at a radially off-center position from the axis of rotation, the first and second magnetic sensing bridges respectively providing first and second signals representative of first and second magnetic field directions, the integrated circuit having a set of adjustment parameters for modifying attributes of the first and second signals, modifying values of the set of adjustment parameters until errors in the first and second signals are substantially minimized, and determining an angular position of the shaft based on the first and second signals. | 09-11-2014 |
| 20150028858 | System and Method for Determining Absolute Angular Position of a Rotating Member - A sensor system determines an absolute angular position of a to-be-sensed rotating member. The sensor system may include a rotor with a first magnet coupled to the rotor and a shaft having threads thereon. The sensor system may further include a sleeve with a second magnet and threads complementary to the threads of a shaft. The sleeve may be configured to travel axially along the shaft as a function of rotation of the rotor. The sensor system may also include a first transducer configured to sense orientation of the first magnet and at least one second transducer configured to sense a location of the second magnet along the shaft. Through use of the sensor system, an absolute number of turns and, consequently absolute angular position, of the rotating member can be determined. | 01-29-2015 |
| 20150097554 | Method and Apparatus for Measuring Location of User Terminal Using Magnetic Field - A method for measuring a location of a user terminal, using a magnetic field includes receiving information on a map of the magnetic field; acquiring a first measured value from a magnetic field sensor provided in the user terminal; acquiring a second measured value from another sensor provided in the user terminal and distinguished from the magnetic field sensor; and measuring a location of the user terminal based on the information on the map of the magnetic field, the first measured value and the second measured value. | 04-09-2015 |
| 20150354985 | Magnetic Field Sensor To Detect A Magnitude Of A Magnetic Field In Any Direction - 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. | 12-10-2015 |
| 20160102998 | SCALE FOR A LENGTH MEASURING SYSTEM AND METHOD FOR PRODUCING THE SAME - A scale and related method for a length-measuring system for recording the absolute values of angles or distances. The scale includes a printed circuit board, at least one track for identifying length information or angle information and a coding for identifying the scale. The coding has at least one coding element comprising at least two electrodes and a conductive connection between the electrodes on an insulator substrate. The electrical connection is configured to be irreversibly destroyed when an electrical current is applied. | 04-14-2016 |
| 20160131502 | SCANNING HEAD - A sensing head ( | 05-12-2016 |
