Displacement Patents (Class 324/207.11)
  • Patent number: 10922383
    Abstract: Athletic activity monitoring methods and systems are disclosed. In one embodiment, a sensor module is physically coupled to an object during an athletic activity conducted by a user. An athletic activity monitoring method for use with the sensor module includes the steps of detecting movement of the object, recording movement data, identifying a matching athletic motion from a plurality of reference motions by comparing the movement data to data associated with the plurality of reference motions, and providing an output to the user that conveys the identity of the matching athletic motion.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: February 16, 2021
    Assignee: adidas AG
    Inventors: Aurel Coza, Christian Dibenedetto, Jeffrey Allen
  • Patent number: 10908243
    Abstract: An NMR spectroscopy system for studying a region of a sample to be analysed, includes a magnetoresistive transducer made up of superposed planar layers, which receives a response signal of the sample; a system for making an AC current flow, at a supply frequency fc, through the transducer; a system for generating a magnetic field H0 that is constant and uniform throughout a zone of interest in which the sample and transducer are placed; and an exciting coil to generate a magnetic field H1 that is uniform throughout the zone of interest and that varies at a resonant frequency f1; the field H0 is substantially perpendicular to the layers of the transducer. The system further includes a regulating system to ensure that the field H0 and the planar layers remain orthogonal, and a system for detecting a signal of frequency fc?f1, f1?fc or fc+f1.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: February 2, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Pierre-André Guitard, Claude Fermon, Myriam Pannetier-Lecoeur, Guénaëlle Jasmin-Lebras
  • Patent number: 10837848
    Abstract: The invention discloses an inductive torque sensor and a combined inductive torque and angle sensor for position sensing. The object of the invention to propose a torque sensor as well as a combined torque and angle sensor which does not require a shielding of the sensor PCB and which can provide a plausibility check of the torque sensor when using only three sensors will be solved by an inductive torque sensor for detection of torque movements comprising a stationary printed circuit board (PCB) with sensing coils, a primary target and a secondary target, whereas the primary target and secondary target each comprise of different metallic patterns, whereas each target covers 50% of the sensing coils and the combined coverage of both targets varies between 50% and 100% depending on the relative position between the two targets.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 17, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Josef Janisch, Andreas Buchinger
  • Patent number: 10775201
    Abstract: A rotary encoder may include a first sensor unit comprising a first magnet, and a first magnetosensitive unit facing the first magnet; a second sensor unit comprising a second magnet, and a second magnetosensitive unit facing the second magnet; a circuit to generate pulses; a counter to count the pulses; a first arithmetic unit to calculate a first angle value based on an output of the first magnetosensitive unit; and a second arithmetic unit to calculate a second angle value based on an output of the second magnetosensitive unit. One of the first magnet and the first magnetosensitive unit is provided in the fixed body and the other is provided in the rotating body. One of the second magnet and the second magnetosensitive unit is provided in the fixed body and the other is provided in the rotating body.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: September 15, 2020
    Assignee: NIDEC SANKYO CORPORATION
    Inventors: Hirokatsu Okumura, Yutaka Saito, Hitoshi Joko
  • Patent number: 10768330
    Abstract: A system and method of for estimating the depth of a marker may include a marker locator. The marker locator may include a first transmitter that generates a first activation signal, second transmitter that generates a second activation signal, a receiver that detects first and second response signals, and a processor that determines a depth of a marker based on the first and second response signals. The first transmitter is located at a first position, and the second transmitter is located at a second position apart from the first position. The first and second response signals respectively correspond to the first and second activation signals. The processor is coupled to the receiver. According to some embodiments, the first and second activation signals and the first and second response signals may be separated by time division multiplexing.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: September 8, 2020
    Assignee: Metrotech Corporation
    Inventor: Stephen John Petherick
  • Patent number: 10726596
    Abstract: In a wrist terminal 1, the measurement information acquiring unit 51 acquires position information. The first timing detection unit 52 detects a standby state for a sport. The second timing detection unit 53 detects predetermined start timing of the sport. If the first timing detection unit 52 detects the standby state, the recording control unit 54 makes the measurement information acquiring unit 51 start acquiring position information to continue acquiring position information sequentially at predetermined intervals. If the second timing detection unit 53 detects the predetermined start timing, the recording control unit 54 stores position information being part of the position information already acquired by the measurement information acquiring unit 51 and corresponding to the predetermined start timing into a ROM 16 or a removable medium 31.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: July 28, 2020
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Keiichi Imamura, Takeshi Okada
  • Patent number: 10684181
    Abstract: A gap compensated torque sensing system and methods for using the same are provided. The system can include a magnetostrictive torque sensor and at least one proximity sensor in communication with a controller. The proximity sensor can be substantially rigidly coupled to a sensor head of the torque sensor, either contained within the sensor head or mounted proximate to the sensor head using a bracket or other coupling mechanism. The torque sensor can sense magnetic flux passing through the target and the proximity sensor can measure a gap between itself and the target. The controller can estimate torque applied to the target from magnetic flux sensed by the torque sensor. The estimated torque can be modified by the gap measurement to compensate for changes in magnetic properties of the target due to variations in the gap. In this manner, the accuracy of the torque measurements can be increased.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: June 16, 2020
    Assignee: Bently Nevada, LLC
    Inventors: Dan Tho Lu, Lam Arthur Campbell, Brian F. Howard, Pekka Tapani Sipila, David Folkner, Lysle Turnbeaugh
  • Patent number: 10663327
    Abstract: A magnetostrictive displacement measuring apparatus is proposed, comprising at least one measuring probe which is of flexurally flexible configuration and comprises a waveguide, and comprising a magnetic position marker which couples to the at least one measuring probe in a non-contact manner, wherein the waveguide is supported in an elastic, flexible support tube and the flexible support tube is positioned in a carrier tube, wherein the flexible support tube is, on an outer side thereof, provided with indentations facing the carrier tube and wherein material of the carrier tube is arranged in the indentations.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: May 26, 2020
    Assignee: BALLUFF GmbH
    Inventors: Torsten Beutler, Roland Holder
  • Patent number: 10634519
    Abstract: A magnetic sensor may include one or more sensor components to detect a system-level error, associated with a sensor system that includes the magnetic sensor, based on a set of signal characteristics of a waveform corresponding to a magnetic field present at the magnetic sensor. The one or more sensor components may provide an indication of the system-level error in an output signal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 28, 2020
    Assignee: Infineon Technologies AG
    Inventor: Simon Hainz
  • Patent number: 10600125
    Abstract: A computer-implemented method for determining an indication of a location of a first device in a vehicle is presented. A determination may be made of when a second device in the vehicle transmits a signal. When the second device transmits the signal, an indication of a direction of orientation of the first device may be determined. The indication of the direction of orientation of the first device may be affected by the signal being transmitted by the second device. The indication of the location of the first device in the vehicle may be determined based on an indication of a direction of motion of the vehicle and the indication of the direction of orientation of the first device. The indication of the location of the first device may include an indication of whether the first device is associated with a driver seat of the vehicle.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: March 24, 2020
    Assignee: STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANY
    Inventor: Scott T. Christensen
  • Patent number: 10527746
    Abstract: A system includes a plurality of magnetometers that are each configured to generate a vector measurement of a magnetic field. The system also includes a central processing unit that is communicatively coupled to each of the magnetometers. The central processing unit is configured to receive from each of the plurality of magnetometers the respective vector measurement of the magnetic field. The central processing unit is further configured to compare each of the vector measurements to determine differences in the vector measurements and to determine, based on the differences in the vector measurements, that a magnetic object is near the plurality of magnetometers.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 7, 2020
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Jay Hansen, John B. Stetson, Jr., Michael DiMario
  • Patent number: 10501113
    Abstract: To provide a motor drive control device, an electric power steering device, and a vehicle which can individually diagnose abnormalities of magnetic detection elements, designed in a multisystem configuration to include at least two systems, for each system. A motor drive control device includes two systems of first and second rotation information detection function units. The first and second rotation information detection function units include first and second rotation position information detection units and first and second rotation information detection units. The first and second rotation information detection units individually diagnose their own abnormalities based on first and second motor rotation position signals detected by the first and second rotation position information detection units.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: December 10, 2019
    Assignee: NSK Ltd.
    Inventors: Masaki Kuwahara, Shigeyuki Uematsu
  • Patent number: 10393549
    Abstract: A method for determining a position of a movable element of a linear actuator of a motor vehicle includes supplying a current to a coil of the linear actuator so as to move and/or hold the movable element by a magnetic field of the coil generated by the supplied current; modulating the current supplied to the coil with an electrical alternating variable having a predetermined frequency; determining an impedance or an admittance of the coil at the predetermined frequency by measuring a further variable at the predetermined frequency; and determining the position of the movable element as a function of the determined impedance or admittance.
    Type: Grant
    Filed: October 31, 2015
    Date of Patent: August 27, 2019
    Assignee: AUDI AG
    Inventors: Andreas Von Dahl, Carl Johannes Schlockermann
  • Patent number: 10369067
    Abstract: The presence or absence of objects (e.g., medical implements, medical supplies) tagged with transponders may be determined in an environment in which medical procedures (e.g., surgery) are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may, for example, be positioned along an operating table, bed, a mattress or pad or a sheet and may be radiolucent. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: August 6, 2019
    Assignee: Covidien LP
    Inventors: William A. Blair, Bruce E. Barnes, David A. Poirier
  • Patent number: 10302456
    Abstract: Various embodiments include a position sensor configuration that compensates for a bias field offset. The position sensor configuration may be used for position sensing of components, such as camera components, that are movable via an actuator (e.g., a voice coil motor actuator). In some embodiments, the actuator may include an asymmetric magnet arrangement that produces an asymmetric magnetic field. The asymmetric magnetic field may include one or more bias field components that are offset relative to one or more axes. In some examples, the position sensor configuration may include one or more magnetic field sensor packages. Individual ones of the magnetic field sensor packages may include a magnetic field sensor and one or more compensation magnets. The compensation magnets may be configured to contribute to one or more compensation magnetic fields that counteract the bias field components such that the compensation magnetic fields compensate for the bias field offset.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Hyuk J. Choi, Jeffrey N. Gleason, Yonghua Zhao
  • Patent number: 10290677
    Abstract: A semiconductor device includes a semiconductor substrate having a plurality of Hall elements formed therein, and a magnetic body formed on the semiconductor substrate and having a magnetic flux converging function. The contour in vertical cross-section of the magnetic body on the semiconductor substrate has an outer circumferential portion. At least a part of the outer circumferential portion has a portion having an approximate quadrant shape, and a portion contiguous to the approximate quadrant portion and substantially parallel to the semiconductor substrate.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 14, 2019
    Assignee: ABLIC Inc.
    Inventors: Matsuo Kishi, Miei Takahama (nee Sato), Hiroshi Takahashi, Mika Ebihara, Takaaki Hioka
  • Patent number: 10286209
    Abstract: Implantable medical devices automatically switch from a normal mode of operation to an exposure mode of operation and back to the normal mode of operation. The implantable medical devices may utilize hysteresis timers in order to determine if entry and/or exit criteria for the exposure mode are met. The implantable medical devices may utilize additional considerations for entry to the exposure mode such as a confirmation counter or a moving buffer of sensor values. The implantable medical devices may utilize additional considerations for exiting the exposure mode of operation and returning to the normal mode, such as total time in the exposure mode, patient position, and high voltage source charge time in the case of devices with defibrillation capabilities.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: May 14, 2019
    Assignee: Medtronic, Inc.
    Inventors: Hyun J. Yoon, Michael L. Ellingson, Wade M. Demmer, Jonathan D. Edmonson, Matthew J. Hoffman, Ben W. Herberg, James D. Reinke, Todd J. Sheldon, Paul R. Solheim, Alison M. Seacord
  • Patent number: 10281344
    Abstract: An arrangement for measuring a force and/or a torque (Mt) on a machine element extending along an axial axis is disclosed. The machine element has a cavity and at least one magnetization region, extending circumferentially around the axial axis in an axial section. The arrangement further includes at least one first magnetic field sensor, a second magnetic field sensor, a third magnetic field sensor and a fourth magnetic field sensor, each of which is designed to individually measure an axial direction component of a magnetic field caused by the magnetization and also by the force or torque (Mt) and each of which lies in the axial section. At least the first magnetic sensor and the second magnetic sensor are arranged in the cavity of the machine element.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: May 7, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Stephan Neuschaefer-Rube, Jan Matysik
  • Patent number: 10261026
    Abstract: A defect inspection method includes an illumination light adjustment step of adjusting light emitted from a light source, an illumination intensity distribution control step of forming light flux obtained in the illumination light adjustment step into desired illumination intensity distribution, a sample scanning step of displacing a sample in a direction substantially perpendicular to a longitudinal direction of the illumination intensity distribution, a scattered light detection step of counting the number of photons of scattered light emitted from plural small areas in an area irradiated with illumination light to produce plural scattered light detection signals corresponding to the plural small areas, a defect judgment step of processing the plural scattered light detection signals to judge presence of a defect, a defect dimension judgment step of judging dimensions of the defect in each place in which the defect is judged to be present and a display step of displaying a position on sample surface and the
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: April 16, 2019
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Yuta Urano, Toshifumi Honda, Takahiro Jingu
  • Patent number: 10247613
    Abstract: A method of determining the angular orientation of headgear is described. The headgear has tracking points being at least four tracking points, the relative position of the tracking points is calibrated and stored as relative position information, each of the tracking points comprises an infra-red (IR) reflective point. Light reflected from at least some of the tracking points of the headgear is filtered to allow only light in an IR wavelength band to pass. The filtered IR light is imaged to provide a detected image including at least some of the tracking points. At least some of the tracking points in the detected image are identified, and the position of the identified tracking points in the detected image is determined. The angular orientation of the headgear is determined in multiple different angular directions based on the stored relative position information and the position of the identified tracking points.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 2, 2019
    Assignee: ROCKWELL COLLINS, INC.
    Inventors: Daniel S. Wald, Marvin R. Lovato, David I. Han, Brandon E. Wilson
  • Patent number: 10250456
    Abstract: Techniques for managing operation in cloud computing systems are disclosed herein. In one embodiment, a method can include receiving data representing a guaranteed value of a performance metric of a cloud service and an error budget and deriving a switching threshold based on a combination of the value of the performance metric and the error budget. The method also includes determining a current value of the performance metric of the cloud service and causing the cloud computing system to selectively switch between operational modes for providing the cloud service based on a comparison between the determined current value of the performance metric and the switching threshold.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: April 2, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Dan Barrett
  • Patent number: 10145709
    Abstract: An absolute position detecting device and method are provided. The absolute position detecting device utilizes the incremental magnetization on a magnetic encoding ruler with two different pole widths, such that elliptical Lissajous curves may be obtained by magnetoresistive sensors. The absolute position may be obtained by determining the region of the signals on the ellipses read by the magnetoresistive sensors.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: December 4, 2018
    Assignee: National Tsing Hua University
    Inventors: Cheng-Yi Lin, Heng-Sheng Hsiao, Sheng-Ching Wang, Tsung-Shune Chin, Cheng-Kuo Sung, Jen-Yuan Chang
  • Patent number: 10147289
    Abstract: Sensing devices, systems and methods for securing articles against tampering using a unique magnetic field signature measured at two different times are provided. One or more sensing devices are secured to a ferrous surface portion of a target container. The sensing devices are secured using a plurality of magnets. The unique magnetic field signature sensed by a sensing device is produced by a combination of the plurality of magnets of the sensing device and the ferrous surface portion of the target container and earth's magnetic field. The two different times being one of a baseline measurement session and one of an observation measurement session. An observation measurement session may be triggered by a shock event or periodically.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: December 4, 2018
    Assignee: UT-BATTELLE, LLC
    Inventors: Charles L. Britton, Jr., Steven S. Frank, Michael J. Kuhn, Andrzej Nycz, Chris A. Pickett, Scott L. Stewart, Robert J. Warmack, Richard A. Willems, James R. Younkin
  • Patent number: 10108300
    Abstract: Non-contact position and motion sensing is improved for oscillator frequency based sensors in response to adding a two phase calibration along with bootstrapping circuit. Calibration is performed across the multiple sensor channels, so that: (1) maximum sensor channel loading is determined, and (2) the amount of capacitive load required for each other channel to match this same maximum load is stored for application to that channel during non-contact sensing. Capacitive coupling between channels is nullified by a bootstrapping process, in which time-domain voltage on the active channel is replicated on the non-active channels during non-contact sensing, thus creating equal potentials across inter-channel couplings that effectively eliminate inter-channel capacitive loading.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: October 23, 2018
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Adrian J. Tang, Mau-Chung Frank Chang
  • Patent number: 10067201
    Abstract: A magnetic sensor has a circuit segment with a quadrupole region. The quadrupole region includes a supply line, a first return line and a second return line, all in a conductor layer. The first supply line is laterally adjacent to the supply line on a first side, and the second return line is laterally adjacent to the supply line on a second, opposite side. A space between the supply line and the first return line is free of the conductor layer; similarly, a space between the supply line and the second return line is free of the conductor layer. The first return line and the second return line are electrically coupled to the supply line at a terminus of the circuit segment.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: September 4, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Iouri N Mirgorodski, Roozbeh Parsa, William French, Dok Won Lee, Ann Gabrys
  • Patent number: 10042070
    Abstract: A method for locating utensils involves (step a) measuring, by magnetometers, of the amplitude of the magnetic field, and (step b) estimating, with the magnetometer measurements the positions, orientations and amplitudes of the magnetic moments of the objects of the utensils. The method also includes (step c) detecting each immobile utensil and, in response, adding the immobile utensil to a list, and (step d) establishing measurements from the magnetometers when they are exclusively in the presence of a reference magnetic field generated only by magnetic objects of all the immobile utensils in the list of immobile utensils. The method further includes (step e) calculating the amplitude of a disturbance on the basis of the differences between the measurements performed in step a) and the measurements established in step d). If the amplitude of the disturbance crosses a predetermined threshold, step b) is executed, otherwise the method returns to step a).
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: August 7, 2018
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Tristan Hautson, Timothée Jobert, Jean-Luc Vallejo
  • Patent number: 10045453
    Abstract: To provide an electronic apparatus having particularly excellent environmental resistance. An electronic apparatus includes a case, a cable drawn out from the case, a bonding intermediating member that is made of a resin and joined to the cable, a cylindrical clamp holding the cable, and a sealing resin part filling an internal space defined by the case and the clamp. The cable has a core wire and a sheath that is made of a resin covering the core wire and the core wire is exposed not to be covered by the sheath at an end of the cable. The bonding intermediating member has a cylindrical base covering an outer circumferential face of the sheath and a cylindrical protrusion protruding toward a tip side of the cable. All of an inner circumferential face and an outer circumferential face of the protrusion and an end face at a tip side of the protrusion in an axial direction are covered by the sealing resin part.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: August 7, 2018
    Assignee: OMRON Corporation
    Inventors: Takaaki Sanda, Daisuke Inoue, Yusuke Hayashi, Yuki Ushiro, Hiroto Katsura
  • Patent number: 9891337
    Abstract: Buried utility transmitters and associated locator devices, systems, and methods used for locating utility lines, pipes, and/or other conductors that are obscured from view are disclosed. In one embodiment a buried utility transmitter includes a module generating an output current for provision to the utility so as to generate a magnetic field for detection by a utility locator, with the output current signal having modulated signaling. The transmitter system may include a tray apparatus configured to be removably dockable to the transmitter module or element or a body or frame of the transmitter system.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: February 13, 2018
    Assignee: SEESCAN, INC.
    Inventors: Mark S. Olsson, Jesse O. Casares, Jan Soukup, Stephanie M. Bench, Justin W. Taylor, Ray Merewether, David A. Cox
  • Patent number: 9853837
    Abstract: A magnetic communications transmitter includes a magnetic field generator and a controller. The magnetic field generator is configured to generate a magnetic field. The controller is configured to control the magnetic field generator by controlling an electrical current supplied to the magnetic field generator, and causing the magnetic field generator to generate an optimized variable amplitude triangular waveform.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: December 26, 2017
    Assignee: Lockheed Martin Corporation
    Inventors: James Michael Krause, Arul Manickam
  • Patent number: 9805863
    Abstract: An improved wireless transmission system for transferring power over a distance. The system includes a transmitter generating a magnetic field and a receiver for inducing a voltage in response to the magnetic field. In some embodiments, the transmitter can include a plurality of transmitter resonators configured to transmit wireless power to the receiver. The transmitter resonators can be disposed on a flexible substrate adapted to conform to a patient. In one embodiment, the polarities of magnetic flux received by the receiver can be measured and communicated to the transmitter, which can adjust polarities of the transmitter resonators to optimize power transfer. Methods of use are also provided.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 31, 2017
    Assignee: Thoratec Corporation
    Inventors: John Freddy Hansen, Ethan Petersen
  • Patent number: 9778067
    Abstract: A sensor operates to produce a differential signal with a voltage regulated that generates a regulated voltage to a first sensor element for detecting a physical parameter. A current mirror circuit is configured to provide a first sensor current to the first sensor element, detect the first sensor current at the first sensor element and duplicate the detected current to provide a second sensor current to a second sensor element. The second sensor element detects the physical quantity with the replicated current.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: October 3, 2017
    Assignee: Infineon Technologies AG
    Inventor: Alessandro Michelutti
  • Patent number: 9772198
    Abstract: In a linear displacement sensor, two magnets with different polarities define one pitch of a magnetic scale. kn (k is a natural number greater than or equal to 2, n is a natural number greater than or equal to 1) sensor units configured to output a plurality of signals whose period is one pitch and whose phases with respect to the pitch are different are arranged along the magnetic scale in a one-pitch segment. Periodic errors with n periods per pitch of the sensor units are canceled out by averaging the phases from the kn sensor units.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 26, 2017
    Assignee: MURATA MACHINERY, LTD.
    Inventors: Tetsuya Shimizu, Hideki Kubo, Satoshi Hanaka, Tatsuo Ota, Shogo Terada
  • Patent number: 9739846
    Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: August 22, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Craig S. Petrie, Bryan Cadugan, David Toebes, Michael C. Doogue, William P. Taylor
  • Patent number: 9659232
    Abstract: An apparatus for determining a position of an object relative to a representation of an image to be represented includes a position pattern generator for generating a position pattern subdivided into a plurality of pattern portions, each of the pattern portions having an unambiguous bit pattern of a plurality of bit patterns, and the bit patterns being Gray-coded in a generalized manner; a combination unit for combining the position pattern with the at least one image to be represented and for providing a corresponding combined image; an optical sensor for optically sensing an image section of the combined image, being correlated with the object position; a filter for extracting at least one bit pattern corresponding to a pattern portion of the position pattern, from the image section and for providing at least one corresponding extracted pattern portion; and a determiner for determining the object position based on the extracted bit pattern.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: May 23, 2017
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Stefan Kraegeloh, Tobias Bliem, Joerg Pickel, Christian Vey, Rinat Zeh
  • Patent number: 9651341
    Abstract: A sensor system for detecting buried metal objects such as unexploded ordnance and the collection of data for the classification of the detected objects based on parameters extracted from the collected data includes a wheeled cart, positioned on which is an array of transmitter coils for transmitting a series of excitation signals onto the area of interest and a sensor array of receiver coils and preamplifiers for receiving back the resultant eddy current decays emitted by the buried objects, a computer, and data acquisition electronics for acquiring and storing the received decays as decay data within the computer. The incoming EMI data are digitized and a data fitting process is performed to extract fit location and shape parameters. These data can be transferred to other data analysis systems for comparison to previously recorded signatures to determine whether the received decay data from the area of interest is attributable to buried metal objects or conversely to an object constituting an anomaly.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 16, 2017
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Herbert H. Nelson
  • Patent number: 9612136
    Abstract: An electronic absolute position encoder is provided having a scale, a detector, and a signal processor configured to determine an absolute position of the detector along the scale. The scale includes a signal modulating scale pattern comprising a periodic pattern component and a gradual pattern variation component. The detector includes N spatial phase sensing elements (e.g., conductive windings) and at least one reference sensing element, which is spaced apart along the measuring axis direction by a distance corresponding to an integer multiple of 360 degrees of spatial phase shift relative to a first one of the N spatial phase sensing elements. A first reference signal from the first reference sensing element and a first signal from the first one of the N spatial phase sensing elements include nominally similar signal contributions from the periodic pattern component, and a difference between the two signals is due to a difference in their signal contributions from the gradual pattern variation component.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: April 4, 2017
    Assignee: Mitutoyo Corporation
    Inventor: Ted Staton Cook
  • Patent number: 9500464
    Abstract: Methods for determining performance information for an object located within an area include obtaining magnetic field information for the area, measuring first magnetic field data when the object is located at a first position within the area, and determining performance information for the object within the area based on the magnetic field information for the area and the first magnetic field data.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 22, 2016
    Assignee: adidas AG
    Inventor: Aurel Coza
  • Patent number: 9441992
    Abstract: Disclosed herein is an electromagnetic induction sensor that is used with a position indicator and includes coils for electromagnetic coupling with the position indicator. The electromagnetic induction sensor includes: a sensor board main body that includes an insulating substrate and a surface sheet attached to a side of a first surface of the insulating substrate, on which side a position is indicated by the position indicator; at least part of conductors forming the coils being formed on a second surface of the insulating substrate opposite from the first surface; and an overlay member that includes a magnetic powder material layer and is adhered to the side of the second surface of the sensor board main body.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: September 13, 2016
    Assignee: Wacom Co., Ltd.
    Inventor: Yoshiharu Matsumoto
  • Patent number: 9347795
    Abstract: A sensor used to sense the position of an attached movable object. The sensor can be mounted to a pneumatic actuator. The sensor includes a housing that has a pair of cavities or pockets separated by a wall. A magnet carrier is positioned within one of the cavities and a magnet is coupled to the magnet carrier. The magnet carrier is coupled to the moveable object. A magnetic sensor is positioned in the other of the cavities. The magnetic sensor generates an electrical signal that is indicative of a position of the movable object.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 24, 2016
    Assignee: CTS Corporation
    Inventors: William D. Storrie, Robert L. Newman
  • Patent number: 9350196
    Abstract: A non-contact charging apparatus configured to, vary the inductance and the capacitance of the matching unit for matching the impedance of the power supply system that supplies alternate current power and the impedance of the power transmitting/receiving system including a power transmitting unit and a power receiving apparatus according to the variable information.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: May 24, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Akiyoshi Uchida, Masakazu Taguchi, Kiyoto Matsui, Hiroyasu Kawano, Satoshi Shimokawa
  • Patent number: 9200884
    Abstract: A magnetic sensor system includes a scale and a magnetic sensor arranged in a relative positional relationship variable in a first direction, and a computing unit. The magnetic sensor includes a first detection circuit, a second detection circuit and a third detection circuit that are disposed at a first position, a second position and a third position, respectively. Each of the first to third detection circuits includes a spin-valve MR element. A difference between two of the first to third positions that are the most distant from each other in a first direction falls within a one-pitch amount of change in the relative positional relationship between the scale and the magnetic sensor. The computing unit generates first and second post-computation signals having mutually different phases by computation using detection signals from the first to third detection circuits.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: December 1, 2015
    Assignee: TDK CORPORATION
    Inventors: Kunihiro Ueda, Hiraku Hirabayashi, Satoshi Abe, Homare Tokida
  • Patent number: 9041402
    Abstract: There is provided a method for determining an abnormality during operation of a high voltage disconnect switch, the method comprising: determining a current position of an arm of the high voltage disconnect switch operatively connected to a motor, the motor being operated for driving the arm of the high voltage disconnect switch; determining a torque of the motor corresponding to the current position of the arm; comparing the torque of the motor to a torque threshold for the current position of the arm; and outputting an abnormality signal based on the comparison.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: May 26, 2015
    Assignee: EHT INTERNATIONAL INC.
    Inventors: Patrick Lalonge, Robert Jeanjean
  • Publication number: 20150137799
    Abstract: An apparatus that determines that a vehicle has moved comprises a shaft member, a pin configured to attach the shaft member to a backing plate via an opening in the shaft member that enables the shaft member to move in a direction along the length of the shaft member, to rotate about the pin, and to contact a surface external to the vehicle when the shaft member is in a first position. The apparatus also comprises a first alignment magnet that attracts the shaft member to the surface external to the vehicle and a first sensor that determines that the shaft member is in the first position. The apparatus further comprises a first holding magnet, a second holding magnet, and at least one sensor that indicates that the shaft member is in contact with the first holding magnet or the second holding magnet, each indicating a direction of movement.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Applicant: Thales Canada Inc
    Inventors: David DIMMER, Abe KANNER
  • Patent number: 9035666
    Abstract: A torsion angle and rotation angle measurement device includes an input rotation disk, an output rotation disk, at least two torsion measuring modules and a rotation measuring module. The output rotation disk is coaxially and rotatably connected with the input rotation disk. At least two torsion measuring modules are disposed between the input rotation disk and the output rotation disk. Each torsion measuring module includes a rotary variable resistor and a torsion measuring arm. The rotary variable resistor is disposed on the output rotation disk. The torsion measuring arm is pivotally connected with the rotary variable resistor at a first end thereof, and is slidably connected with the input rotation disk at an second opposite end. When the input rotation disk rotates relative to the output rotation disk, the rotary variable resistor measures an angle indicating the input rotation disk rotating relative to the output rotation disk.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: May 19, 2015
    Inventor: Chieh Chi Chen
  • Patent number: 9030194
    Abstract: A scanning device for a position encoder is provided that comprises a plurality of sensor elements for generating a plurality of sensor signals. A summation unit is also provided for generating at least a first summation signal and a second summation signal that provide information on the relative alignment of the scanning device and an associated scale. The first summation signal is generated from a first subset of the plurality of sensor signals and the second summation signal is generated from a second subset of the plurality of sensor signals. The plurality of sensor elements are substantially evenly spaced apart from one another N and sensor elements are provided per period of an associated scale, wherein N is an integer value and a multiple of three and four. In this manner, the third harmonic contribution to the summation signals is suppressed.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: May 12, 2015
    Assignees: RLS Merilna Tehnika D.O.O., Renishaw PLC
    Inventor: Gregor Dolsak
  • Patent number: 9027428
    Abstract: A non-contact sensor includes a substrate having a groove, two pattern coils arranged on opposite sides of the groove, a detected object connected to the shift lever and moved in cooperation with the shift lever along the groove, and a signal processing circuit that calculates a movement amount of the shift lever based on an output value provided from the pattern coils.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 12, 2015
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Masayoshi Iwata
  • Patent number: 9024623
    Abstract: Techniques for coupling with devices that convert displacements into differential voltages and improvement of the sensitivity of such devices. A transducer operates based on changes of inductances between primary and secondary of a transformer to produce a differential signal that includes a noninverted signal and an inverted signal. A switch receives the noninverted signal and the inverted signal. A processor creates a square wave signal for driving the transducer input, and also digitally creates an inverted transducer output. A filter operates to filter the square wave output from the processor to produce a substantially single frequency signal at a specified timing having a specified phase relationship relative to the first phase inversion signal based on instructions that are executed by the processor.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: May 5, 2015
    Assignees: Oxford Instruments PLC, Oxford Instruments AFM, Inc
    Inventors: Dan Bocek, Roger Proksch
  • Patent number: 9013178
    Abstract: In a resolver for determining the relative angular position between two subassemblies, each subassembly includes a winding, the winding being situated inside a housing made up of two housing shells. The housing shells have tabs which are oriented with an axial directional component and joined in interlocking manner with axial overlap at a mutual offset in the circumferential direction.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 21, 2015
    Assignee: LTN Servotechnik GmbH
    Inventors: Hans Logé, Andreas Hitzer
  • Publication number: 20150097719
    Abstract: A multi dynamic environment and location based active augmented reality (AR) system is described. The system uses dynamic scanning, active reference marker positioning, inertial measurement, imaging, mapping and rendering to generate an AR for a physical environment. The scanning and imaging are performed from the perspective of a user wearing a head mounted or wearable display in the physical environment.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Dhanushan BALACHANDRESWARAN, Taoi HSU, Jian ZHANG
  • Publication number: 20150091554
    Abstract: A magnetic encoder has a high resolution track including a plurality of North/South pole pairs defining a plurality of pole junctions, and a reference track including a North/South pole pair defining a North/South pole junction aligned with a first pole junction of the high resolution track, and a South/North pole junction aligned with a second pole junction of the high resolution track. Only a single pole junction of the high resolution track is positioned between the first and second pole junctions of the high resolution track.
    Type: Application
    Filed: March 13, 2013
    Publication date: April 2, 2015
    Inventor: Mark LaCroix