Including A Tuned Or Resonant Circuit Patents (Class 324/655)
  • Patent number: 10670543
    Abstract: A system and method for monitoring environmental state that includes a structure element with a base substrate and at least one reflector element integrated to the base substrate, wherein the reflector element is physically configured with at least one response signature that is discretely expressed based on an substance induced environmental condition of the reflector element; and a remote monitor device comprising a transmitter and receiver unit and a controller, wherein the monitor device is configured to interrogate the structure element; detect a response signature corresponding to at least the one reflector element; and map the response signature to a corresponding substance induced environmental condition.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: June 2, 2020
    Inventors: Brenna Elizabeth Donohue, Patrick Francis Donohue
  • Patent number: 10638955
    Abstract: Disclosed is an implant and method of making an implant. The implant having a housing that defines a cavity. The housing includes a sensor comprising a base attached to a diaphragm wherein said base may be positioned within said cavity. The sensor may be a capacitive pressure sensor. The diaphragm may be connected to the housing to hermetically seal said housing. The sensor may include electrical contacts positioned on the diaphragm. The base may define a capacitive gap and a vent wherein the electrodes may be positioned within said capacitive gap such that at least a portion of the electrical contacts extend through the vent. The implant may include a coil in electric communication with the sensor, said coil may be positioned within said housing. A printed circuit board having at least one component may be attached to the floating base.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: May 5, 2020
    Assignee: ENDOTRONIX, INC.
    Inventors: Harry Rowland, Michael Nagy, Nathan Plag, Tyler Panian, Suresh Sundaram
  • Patent number: 10511197
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a wireless power receiving coil in a resonant circuit that resonates at a wireless power receiving circuit resonant frequency. The wireless power transmitting device has coils. The coils are supplied with a drive signal in bursts to detect external objects. Measurement circuitry includes an oscillator for supplying the drive signals and a peak detector and analog-to-digital converter for gathering measurements on the coils to which the drive signals have been supplied. Rate-based-filtering is applied to output signals from the analog-to-digital converter to distinguish between temperature drift effects and object placement effects. The frequency of the drive signals is slightly greater than the wireless power receiving circuit resonant frequency.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: December 17, 2019
    Assignee: Apple Inc.
    Inventors: Jerald Polestico Guillermo, Previn D. Nair, Mikhal S. De Jesus, Antoin J. Russell
  • Patent number: 10466287
    Abstract: An inductive-capacitive (LC) wireless sensor for the detection of toxic heavy metal ions includes inductors and interdigitated electrodes (IDE) in planar form. The sensor is fabricated by screen printing silver (Ag) ink onto a flexible polyethylene-terephthalate (PET) substrate to form a metallization layer. Palladium nanoparticles (Pd NP) is drop casted onto the IDEs to form a sensing layer. The resonant frequency of the LC sensor is remotely monitored by measuring the reflection coefficient (S11) of a detection coil (planar inductor). The resonant frequency of the LC sensor changes with varying concentrations of heavy metals such as mercury (Hg2+) and lead (Pb2+) ions. Changes in the resonant frequency are used to detect the presence and/or concentration of heavy metal ions.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 5, 2019
    Assignee: The Board of Trustees of Western Michigan University
    Inventors: Massood Zandi Atashbar, Sai Guruva Reddy Avuthu, Binu Baby Narakathu
  • Patent number: 10234334
    Abstract: A sensor tag (10) includes an antenna (102) and connection conductors (103) formed on a surface of a flexible substrate (101). A sensing element (110) is mounted on land conductors (131) of the connection conductors (103). The sensing element (110) is composed of a crystal vibrator (111) and an RFIC (112). The crystal vibrator (111) receives an excitation signal from the outside and generates a resonance signal of a resonant frequency corresponding to the sensed temperature. Equivalent circuit constant information including at least an equivalent inductance (Lxs) or an equivalent capacitance (Cxs) of the crystal vibrator (111) are stored in the RFIC (112).
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: March 19, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yoshihiro Ito
  • Patent number: 10226218
    Abstract: A wireless circuit includes a housing having at least one opening, and sensor connected to the housing at the opening. The sensor includes a first layer having a first dimension and a second layer having a second dimension shorter than the first dimension. The second layer may be positioned entirely within the housing and a surface of said first layer may be exposed to an exterior of the housing.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: March 12, 2019
    Assignee: ENDOTRONIX, INC.
    Inventors: Harry Rowland, Michael Nagy, Balamurugan Sundaram, Suresh Sundaram
  • Patent number: 10060863
    Abstract: A system and method for monitoring environmental state that includes a structure element with a base substrate and at least one reflector element integrated to the base substrate, wherein the reflector element is physically configured with at least one response signature that is discretely expressed based on an substance induced environmental condition of the reflector element; and a remote monitor device comprising a transmitter and receiver unit and a controller, wherein the monitor device is configured to interrogate the structure element; detect a response signature corresponding to at least the one reflector element; and map the response signature to a corresponding substance induced environmental condition.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: August 28, 2018
    Assignee: Azila Holdings, LLC
    Inventors: Brenna Elizabeth Donohue, Patrick Francis Donohue
  • Patent number: 9712894
    Abstract: A passive wireless sensor having a plurality of dielectric layers, an antenna, a diaphragm, and a feeding element is provided. Further, the antenna is disposed in at least a portion of a cavity formed by one or more dielectric layers of the plurality of dielectric layers. Moreover, the diaphragm is disposed on the cavity. Additionally, the feeding element is disposed in at least a portion of the plurality of dielectric layers. Also, the feeding element is operatively coupled to the antenna.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: July 18, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Yongjae Lee, Joseph Alfred Iannotti, Nancy Cecelia Stoffel
  • Patent number: 9483724
    Abstract: A ribbon comprises a substrate, and a plurality of radio frequency identification (RFID) seals on the substrate. Different RFID seals detune in response to differing tensile loads.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: November 1, 2016
    Assignee: SOLBYUNG COVELEY
    Inventors: Michael Coveley, Srdjan Milutinovic, Yuping Huang
  • Patent number: 9315110
    Abstract: A device for the inductive transfer of electric energy from a stationary unit having a current supply device and a primary inductance to a vehicle that is adjacent the unit and has a secondary inductance. The vehicle has a secondary control element for adjusting the secondary power taken from the secondary inductance and comprises a control device enabling the withdrawn secondary power to be modified in steps. The stationary unit comprises a primary control element for adjusting the primary power and a first measuring device enabling an operational parameter, influenced by the secondary power, of the current supply device to be measured. The primary control element adjusts the primary power which can be injected in accordance with modifications of the operational parameter. The secondary power can be switched by the switching device and has in one of the steps, a value which is at least approximately zero.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: April 19, 2016
    Assignee: CONDUCTIX-WAMPFLER GMBH
    Inventor: Pascal Asselin
  • Patent number: 9185752
    Abstract: A circuit arrangement for selective powering of distributed loads (D1-D7, 220-226, 213a-213e) is provided, comprising a plurality of load segments (10, 20, 30, 40, 50, 60, 70), each being electrically connected to at least one supply terminal al for receiving a variable voltage, wherein each load segment (10, 20, 30, 40, 50, 60, 70) comprises at least a load unit (D1-D7, 220-226, 213a-213e) and a proximity sensor unit (11), coupled with said load unit and comprising at least a reactive device (L1-L7, L1a-L7a, C1-C7, C1a-C7a, 214a-214e, 215d) having a reactance, said reactance depending on the proximity of a detection object (100, 102).
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 10, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Harald Josef Günther Radermacher, Adrianus Sempel
  • Publication number: 20150145530
    Abstract: The present invention aims to provide a coil unit for improving an accuracy in detecting foreign matter and an apparatus for detecting foreign matter which improves the accuracy in detecting foreign matter when a power is transmitted in a contactless manner. A power feeding coil unit L100 (a coil unit) of the present invention is provided with a power feeding coil L1 (a coil for power transmission) and an apparatus D100 for detecting foreign matter. The apparatus D100 for detecting foreign matter is provided with a plurality of resonators R1 having a resonator coil M1 and a resonator capacitor C1 and also an excitation coil E1 for exciting the plurality of resonators R1. The plurality of resonators R1 are disposed to cover at least an area interlinking with a magnetic flux generated by the power feeding coil L1 and to decrease an influence of mutual inductance.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventor: Takashi URANO
  • Publication number: 20150145529
    Abstract: A power feeding coil unit (a coil unit) is provided with a power feeding coil (a coil for power transmission) and an apparatus for detecting foreign matter. The apparatus for detecting foreign matter is provided with a plurality of resonators having a resonator coil and capacitor and also an excitation coil for exciting the plurality of resonators. The plurality of resonators are disposed in rows and columns to cover at least an area interlinking with a magnetic flux generated by the power feeding coil. The excitation coil makes resonators adjacent in a row direction and a column direction among the plurality of resonators to generate an alternating magnetic field with resonance frequencies different from each other within a frequency band in which the power feeding coil is not excited.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventor: Takashi URANO
  • Publication number: 20150143999
    Abstract: The invention provides a beverage production machine having an apparatus for recognising a package. The apparatus comprises two resonant tank circuits, each comprising a coil and a capacitor; two electronic circuits for detecting changes in coil impedance; a means for generating a signal which is indicative of the changes; and means for controlling the beverage production machine according to the signal. The machine also comprises a holder for supporting the package. The package for use in the machine comprises a base unit having a compartment which contains tea material, and a rim with a projecting lip; conductive material associated with the package having two edge sections situated on opposite sides of the compartment; and a lid attached to the base unit around the rim, the central portion of the lid comprising at least one perforated line. The invention also provides a method of recognising the package.
    Type: Application
    Filed: July 2, 2013
    Publication date: May 28, 2015
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: David Murray Cross, Michael Paton, Daniel Thomas Toon
  • Publication number: 20150123681
    Abstract: A wheel circuit using electromagnetic induction and an electronic pen are provided. The wheel circuit includes a rotary encoder configured to be rotated according to a user operation and includes at least one port, a resonant unit configured to be coupled with a port of the at least one port, and at least one capacitor including one end which is coupled with at least one other port which is not coupled with the resonant unit among the at least one port. The at least one capacitor has a capacitance different from each other, wherein at least one other capacitor of the at least one capacitor is connected to the resonant unit according to rotation of the rotary encoder to vary a resonant frequency.
    Type: Application
    Filed: September 26, 2014
    Publication date: May 7, 2015
    Inventor: Sung Chul PARK
  • Publication number: 20150109000
    Abstract: This disclosure provides systems, methods and apparatus for detecting foreign objects. An apparatus for detecting a presence of an object is provided including a plurality of electrically conductive loops arranged in an array. The apparatus includes a sensor circuit configured to determine a characteristic associated with each of the plurality of loops. The apparatus includes a hardware processor configured to, for each loop of the plurality of loops, determine a parameter based on the characteristic associated with the loop and the characteristic associated with at least one adjacent loop. The hardware processor may be further configured to determine the presence of the object based on the parameter. The parameter may comprise a sum of a difference between the characteristic associated with the loop and a reference value for the characteristic, and a difference between the characteristic associated with each of the at least one adjacent loop and the reference value.
    Type: Application
    Filed: March 18, 2014
    Publication date: April 23, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Lukas Sieber, Marcel Fischer, Hanspeter Widmer
  • Publication number: 20150108849
    Abstract: A method for detecting the presence of a receiver in an inductively coupled power transfer system having a transmitter and receiver. The method includes switching on a transmitter converter at a first frequency, measuring the inrush current and determining whether there is a receiver present. In another method, the inrush current is measured for a range of transmitter frequencies, and the variation in current is used to determine where there is a receiver present. In another method, the inrush current is measured when there is a change in voltage in the transmitter, and the variation in current is used to determine where there is a receiver present. In another method, the current supplied to the transmitter converter is measured over two transmitter frequencies, and the variation in current is used to determine where there is a receiver present.
    Type: Application
    Filed: April 15, 2013
    Publication date: April 23, 2015
    Applicant: PowerbyProxi Limited
    Inventor: Daniel James Robertson
  • Patent number: 8981796
    Abstract: A wireless damage detector for ceramic armor plates includes an interrogator and a body armor ceramic plate. The interrogator includes an inductive primary coil having a resonant frequency. The plate includes a corresponding inductive secondary coil adapted to cooperate with the primary coil when the interrogator is positioned in an interrogation position wirelessly adjacent the plate. When in the interrogation position, the primary and secondary coils are inductively coupled, that is, form an inductive coupling, when the primary coil is energized at the resonant frequency. The plate includes at least one self-contained frangible continuity circuit electrically connected to the secondary coil. The inductive coupling induces an electrical current flow in the continuity circuit when the circuit is undamaged. A detector cooperates with the primary and secondary coils when the interrogator is in the interrogation position. The detector detects the inductive coupling. An indicator cooperates with the detector.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: March 17, 2015
    Assignee: Cynetic Designs Ltd.
    Inventor: Roger J. Soar
  • Publication number: 20150061699
    Abstract: Provided are a position detection method that selects one antenna at a time from a plurality of loop antennas, transmits, through the selected loop antenna, an electromagnetic signal to a pointer that indicates a screen unit, receives, from the pointer, a resonance signal corresponding to the electromagnetic signal transmitted through the selected loop antenna, and extracts polar coordinates including a distance value and an angle value of a point on a screen unit indicated by the pointer, based on a distribution of a signal strength of a resonance signal received through each of the plurality of loop antennas, a position detection apparatus, a display apparatus, and an antenna apparatus appropriate for extracting polar coordinates.
    Type: Application
    Filed: December 13, 2013
    Publication date: March 5, 2015
    Applicant: LG Display Co., Ltd.
    Inventor: HaZoong KIM
  • Publication number: 20150048844
    Abstract: A corrosion detection sensor embedded within a concrete structure. The sensor includes a hermetically sealed resonant circuit that is a resistor-inductor-capacitor (RLC) circuit. The sensor further includes a sacrificial transducer that is inductively or capacitively coupled to the resonant circuit, where the sacrificial transducer is exposed to an environment outside the sensor to monitor corrosion of steel reinforcement in the concrete structure. Additionally, the sensor includes a protective cementitious housing surrounding the resonant circuit and the sacrificial transducer. The sensor further includes a diffusion layer placed over the sacrificial transducer, where the diffusion layer enables a dispersion of a chemical species over the sacrificial transducer. In this manner, a more uniform distribution of the chemical species over the surface of the sacrificial transducer mitigating the localized corrosion is ensured. Furthermore, such a design is less susceptible to false positives.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Inventors: Dean P. Neikirk, Sharon L. Wood, Praveenkumar Pasupathy, Ali Abu Yosef
  • Patent number: 8952708
    Abstract: Processes and apparatuses are provided for contactless measuring or monitoring in-situ and in real time composition or other electromagnetic impedance correlated properties of liquid or gaseous substances or bulk materials. One or more apparatus may include a resonance type impedance sensor having at least two coils, at least one coil of the at least two coils being at least one excitation coil connectable to at least one alternating current source with frequency sweep, at least one other coil of the at least two coils being at least one sensing coil connectable to at least one data processing system. The one or more methods may include calculating changes in amplitude and resonant frequency induced by electromagnetic interaction between said sensor and object to determine impedance of said object under test; and matching said impedance with predetermined calibration data to determine said chemical or physical properties of said object under test.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: February 10, 2015
    Assignee: NeoVision LLC
    Inventor: Yury Nikolenko
  • Publication number: 20140368220
    Abstract: A non-contact sensing module includes a coil printed circuit board in which a reference pattern coil may be formed at an upper surface and in which a sensing pattern coil may be formed at a lower surface and that has a mounting hole at the center, and a main printed circuit board that may be coupled to the mounting hole and that may be vertically disposed at an upper surface of the coil printed circuit board and that may be electrically connected to the reference pattern coil and the sensing pattern coil.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Applicants: DH Holdings Co., Ltd., Hyundai Motor Company
    Inventors: Myung-Sub Kum, Jong-Sang Noh, Jung-Min Lee
  • Publication number: 20140361792
    Abstract: A resolver excitation apparatus that adjusts amplitude of a sinusoidal excitation source signal to generate an excitation signal having predetermined amplitude in order to excite an exciting winding of a resolver. A parallel resonant circuit having a parallel resonant element that functions as parallel resonant impedance for impedance of the excitation winding. A series resonant circuit having a series resonant element that functions as series resonant impedance for the impedance of the excitation winding.
    Type: Application
    Filed: September 28, 2012
    Publication date: December 11, 2014
    Inventor: Yasushi Nakamura
  • Patent number: 8896324
    Abstract: A method for providing an in-vivo assessment of relative movement of an implant that is positioned in a living being is provided wherein a first assembly and a second assembly are positioned within the living being. The first assembly includes a passive electrical resonant circuit that is configured to be selectively electromagnetically coupled to an ex-vivo source of RF energy and, in response to the electromagnetic coupling, generates an output signal characterized by a frequency that is dependent upon a distance between the first assembly and the second assembly at the time of the electromagnetic coupling.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: November 25, 2014
    Assignee: CardioMEMS, Inc.
    Inventors: Jason Kroh, Florent Cros, Christophe Courcimault
  • Patent number: 8896329
    Abstract: A device, a system and a method for detecting an irregularity in a structure of an aircraft are proposed. The device includes a resonant circuit with a resonance frequency and a probe for tuning the resonance frequency of the resonant circuit. The resonant circuit and the probe are operatively connected in such a way that the probe changes the resonance frequency of the resonant circuit if the structure changes due to a formation of an irregularity.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: November 25, 2014
    Assignees: European Aeronautic Defence and Space Company EADS France, EADS Deutschland GmbH
    Inventors: Werner Zimmerman, Jurgen Steinwandel, Sebastien Rolet, Didier Simonet
  • Patent number: 8894804
    Abstract: An arrangement within a plasma reactor for detecting a plasma unconfinement event is provided. The arrangement includes a sensor, which is a capacitive-based sensor implemented within the plasma reactor. The sensor is implemented outside of a plasma confinement region and is configured to produce a transient current when the sensor is exposed to plasma associated with the plasma unconfinement event. The sensor has at least one electrically insulative layer oriented toward the plasma associated with the plasma unconfined event. The arrangement also includes a detection circuit, which is electrically connected to the sensor for converting the transient current into a transient voltage signal and for processing the transient voltage signal to ascertain whether the plasma unconfinement event exists.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 25, 2014
    Assignee: Lam Research Corporation
    Inventors: Jean-Paul Booth, Alexei Marakhtanov, Rajinder Dhindsa, Luc Albarede, Seyed Jafar Jafarian-Tehrani
  • Patent number: 8884608
    Abstract: The present disclosure is discloses the development of a new device, system, and method that combines advantages of magnetic resonance and atomic force microscopy technologies, and the utility of the new device, system, and method for a wide range of biomedical and clinical researchers. According to one aspect of the present disclosure, a device for micro-scale spectroscopy is disclosed. The micro-scale spectroscopy device includes a beam having a distal end, a proximal end, a top surface and a bottom surface, where the beam is attached to an anchor at the proximal end and further includes a tip extending substantially perpendicular from the bottom surface at or near the distal end, and a coil having at least one turn mounted to the top surface of the beam at or near the distal end opposite the tip, where the coil is capable of both transmitting and sensing electromagnetic radiation.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 11, 2014
    Assignee: Purdue Research Foundation
    Inventors: Corey P. Neu, Babak Ziaie, Teimour Maleki-Jafarabadi, Charilaos Mousoulis
  • Patent number: 8860399
    Abstract: A monitoring device is for monitoring physical characteristics of a building material. The monitoring device is buried inside a block of the building material, and has a sensor to sense physical characteristics thereof. The sensor transmits a signal representative of the physical characteristics.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 14, 2014
    Assignee: STMicroelectronics S.R.L.
    Inventors: Giovanni Girlando, Alessandro Finocchiaro
  • Publication number: 20140203823
    Abstract: A method includes applying a signal to a primary coil of an external charging device. The signal causes the primary coil to inductively couple to a secondary coil of an implantable medical device that is implanted within tissue of a patient. The method also includes measuring a current at the primary coil. The method further includes estimating a depth of the implantable medical device within the tissue of the patient based on the measured current.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 24, 2014
    Applicant: CYBERONICS, INC.
    Inventor: Himanshu JOSHI
  • Publication number: 20140197850
    Abstract: A piezoelectric sensor for the detection and characterization of at least one biochemical element in a fluid, has a piezoelectric substrate exhibiting at each of its opposite faces at least one conducting surface forming electrodes, the electrodes being linked to an electrical generator, one at least of the surfaces being wrapped in a functionalized film, the electrodes form transmission lines exhibiting a zone constituting an induction loop for the excitation of the piezoelectric substrate, the link between the electrodes and the generator being ensured by inductive coupling. A system implementing such a sensor, as well as applications of such a sensor, are described.
    Type: Application
    Filed: June 13, 2012
    Publication date: July 17, 2014
    Applicant: UNIVERSITE DE CERGY PONTOISE
    Inventors: Stephane Serfaty, Pascal Griesmar, Jean-Yves Le Huerou, Emmanuel Caplain
  • Publication number: 20140184245
    Abstract: A position indicator includes a resonance circuit housed in a casing and having an inductance element and a capacitor variable in capacitance, such that the resonance circuit resonates at a predetermined frequency. The position indicator is electromagnetically coupled to a position detecting device. The capacitor includes a dielectric, an electrode disposed on one side of the dielectric, and a trimming electrode disposed on another side of the dielectric such that at least one part of a region of the trimming electrode is opposed to the electrode with the dielectric interposed in between, to form the capacitance of the capacitor. The capacitor is housed in the casing such that the at least one part can be exposed from the casing. The area of the at least one part exposed from the casing to the outside is changed so as to correspond to a resonance frequency desired for the resonance circuit.
    Type: Application
    Filed: December 3, 2013
    Publication date: July 3, 2014
    Applicant: Wacom Co., Ltd
    Inventors: Kazuo Hara, Takashi Yamaguchi
  • Publication number: 20140176159
    Abstract: A key switch assembly is provided wherein a spacer is used to isolate the key switch sensing circuit from the front panel of the device. A button assembly is provided to translate a deflection of the front panel of the device to a target coupled to a sensor of the sensing circuit.
    Type: Application
    Filed: May 29, 2012
    Publication date: June 26, 2014
    Inventors: Sorin Pintiliuc, Tony Dmytriw, Robert Alvord
  • Patent number: 8736425
    Abstract: The present invention related to methods and systems for simultaneously sensing two or more environmental parameters of a sample. Included is an inductor-capacitor-resistor (LCR) resonator sensor and a pick up coil in operative association with the LCR resonator sensor wherein viscoelastic changes in the sensing film cause displacement of the antenna relative to the pick up coil.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: May 27, 2014
    Assignee: General Electric Company
    Inventor: Radislav Alexandrovich Potyrailo
  • Patent number: 8686743
    Abstract: A substrate including a sensor unit, wherein the sensor unit includes a coil wound at least once arranged on the surface of the sensor or embedded within and near the surface thereof. With such an arrangement, an electric current that corresponds to information with respect to the substrate (e.g., the temperature of the substrate or the amount of charge stored in the substrate) flows through the coil.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: April 1, 2014
    Assignees: Philtech Inc., Shinko Electric Industries Co., Ltd.
    Inventors: Yuji Furumura, Naomi Mura, Koki Tamagawa, Tadayoshi Yoshikawa, Hiroshi Yonekura
  • Publication number: 20140009110
    Abstract: A method and apparatus for transmitting charging power to a wireless power receiver. The method includes detecting the wireless power receiver by applying different detection powers with different power levels; applying a driving power to drive the detected wireless power receiver; receiving a request signal for communication from the detected wireless power receiver using the driving power; determining whether or not to subscribe the detected wireless power receiver to a wireless power network; transmitting, to the detected wireless power receiver, a response signal to the request signal for communication, the response signal indicating whether or not the detected wireless power receiver is subscribed to the wireless power network; and transmitting charging power to the detected wireless power receiver, when the detected wireless power receiver is subscribed to the wireless power network.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 9, 2014
    Inventors: Kyung-Woo LEE, Kang-Ho BYUN, Hee-Won JUNG
  • Publication number: 20140002111
    Abstract: A sensing system includes an inductor-capacitor-resistor (LCR) resonator sensor having a substrate, a plurality of first sensing elements mutually spaced apart and disposed on the substrate, and a sensing material film being disposed on a first sensing region of the corresponding first sensing element.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Radislav Alexandrovich Potyrailo, Cheryl Margaret Surman, Steven Yuehin Go, Yongjae Lee
  • Patent number: 8587327
    Abstract: A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the air is flowing out from the second conduit end. In an embodiment, the device includes a housing, means to enable connection of the device to the second conduit end, a detector arranged to detect an electrical property change, and an actuator for causing an electrical property change detectable by the detector, wherein in use, the air flowing into the device causes the detector and the actuator to move relative to each other, causing an electrical property change detectable by the detector.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: November 19, 2013
    Assignee: British Telecommunications Public Limited Company
    Inventors: David John Taylor Heatley, Philip Alfred Barker, Ian Neild
  • Publication number: 20130293026
    Abstract: A detection device, including: one or a plurality of magnetic coupling elements configured to have one or a plurality of coils; and a detection unit that measures or calculates an effective resistance values of the magnetic coupling elements or an effective resistance value of a circuit including at least the magnetic coupling elements and determines a presence or absence of a foreign substance based on a change in the effective resistance value.
    Type: Application
    Filed: April 22, 2013
    Publication date: November 7, 2013
    Applicant: Sony Corporation
    Inventors: Takashi Miyamoto, Hiroaki Nakano, Tomomichi Murakami
  • Publication number: 20130285677
    Abstract: A water content measuring apparatus, for measuring water content present in a fluid flow through a tube, includes a pulse generator for generating in operation a temporal series of excitation pulses, a coil arrangement disposed around the tube adapted to be excited into resonance by the series of excitation pulses and interact with the fluid flow through the tube, and a signal processor adapted to receive resonance signals from the coil arrangement for determining a water content present within the tube. The coil arrangement includes a resonance coil having a length-to-diameter ratio which is at least 3:1, and wherein the resonance coil includes at least 10 turns.
    Type: Application
    Filed: October 12, 2011
    Publication date: October 31, 2013
    Inventor: Erling Hammer
  • Patent number: 8519721
    Abstract: A method is disclosed for compensation of system tolerances in an inductive coupler which includes a power generator that feeds an alternating current into a series resonance circuit formed by a resonance capacitor and an inductive rotating transmission device. First, a brief sequence of at least one period of an alternating current is fed by the power generator into the series resonance circuit. Then the series resonance circuit is short-circuited. A first resonance frequency is measured. Then a longer sequence having a plurality of periods of an alternating-current voltage is generated by the power generator, so that a given small voltage is built up at the load. Now a second resonance frequency is measured while the resonance circuit is short-circuited. Then at least one correcting variable for the power generator is determined from the two resonance frequencies.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: August 27, 2013
    Assignee: Schleifring und Apparatebau GmbH
    Inventors: Nils Krumme, Arno Zimpfer, Stefan Fischer
  • Patent number: 8497689
    Abstract: A method and test setup for reducing the RF power requirement in active load pull uses impedance tuners between the output of the test transistor and the active RF power injection network. The active network uses either a closed loop (active load) configuration or an open loop network employing split or synchronized signal sources. The impedance tuners are wideband (fundamental) tuners, harmonic rejection tuners or multi-harmonic tuners. A 7:1 transforming ratio of the tuners represents the best compromise between power matching and tuner loss, yielding a reduction of 11dB in power requirements from the active load or the synchronized source(s); if only the fundamental signal is injected at the output of the DUT, a multi-harmonic tuner or a harmonic rejection tuner is used for independent harmonic tuning; if multiple harmonic signals are injected, a multi-harmonic tuner is used and creates passive harmonic loads while reducing at the same time the power requirements from the harmonic injection sources.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 30, 2013
    Inventor: Christos Tsironis
  • Publication number: 20130176035
    Abstract: Systems and methods for monitoring laboratory animals includes a tag comprising an inductive element and a capacitive element attached to a portion of a laboratory animal. The position of the portion is detected by monitoring the effect of the tag on a time-varying magnetic field having different frequencies, one near tag resonance, and one away from tag resonance.
    Type: Application
    Filed: February 26, 2013
    Publication date: July 11, 2013
    Applicant: Vertex Pharmaceuticals, Inc.
    Inventor: Vertex Pharmaceuticals, Inc.
  • Publication number: 20130176036
    Abstract: A field device for determining and/or monitoring a chemical or physical, process variable in automation technology, which has at least a first electronic or electrical component and a second electronic or electrical component. The first component has an energy transmitting antenna and the second component has an energy receiving antenna. Between the two components a predetermined distance is provided, which sets the first component and the second component apart from one another. The predetermined distance is filled, at least partially, with a dielectric medium. The energy transmitting antenna is so embodied and/or arranged that it supplies the second component with energy continuously or at predetermined time intervals.
    Type: Application
    Filed: August 31, 2011
    Publication date: July 11, 2013
    Applicant: Endress + Hauser GmbH + Co. KG
    Inventors: Roland Grozinger, Peter Klofer
  • Publication number: 20130141117
    Abstract: Processes and apparatuses are provided for contactless measuring or monitoring in-situ and in real time composition or other electromagnetic impedance correlated properties of liquid or gaseous substances or bulk materials. One or more apparatus may include a resonance type impedance sensor having at least two coils, at least one coil of the at least two coils being at least one excitation coil connectable to at least one alternating current source with frequency sweep, at least one other coil of the at least two coils being at least one sensing coil connectable to at least one data processing system. The one or more methods may include calculating changes in amplitude and resonant frequency induced by electromagnetic interaction between said sensor and object to determine impedance of said object under test; and matching said impedance with predetermined calibration data to determine said chemical or physical properties of said object under test.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 6, 2013
    Applicant: NeoVision LLC
    Inventor: NeoVision LLC
  • Publication number: 20130093436
    Abstract: An electromagnetic method for sensing the relative position of two items using coupled tuned resonant circuits. Two co-resonant tuned circuits are attached to two items 1 and 2 that move relative to one another. The coupling between the circuits is arranged to vary with their relative physical position. One of the tuned circuits is excited at or close to its resonant frequency. The degree of coupling between the tuned circuits is detected by its effect on the way the resultant oscillation changes with time, and this allows the relative position of the items to be established. The inductive elements of the tuned circuits can comprise anti-symmetrical regions 3, 4, 9 and 10 so that the magnetic fields generated by the oscillations are localised and sensitivity to externally applied magnetic fields is minimised. The inductive elements can be implemented directly as printed circuit board tracks.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 18, 2013
    Inventor: AND Technology and Research Ltd.
  • Publication number: 20130088243
    Abstract: 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 signal, while separating the sensing head from signal conditioning circuits by over 10 meters. The simplicity of the electronic module allows the use of basic electronic components that operate at more than 225° C. The signal is a variable frequency impressed onto the one wire, which can be read by a frequency meter. Another signal, such as a position or temperature, can be impressed onto the one wire at the same time as the first signal. The second signal is of a different frequency range so that it will not interfere with the first. A demodulator circuit can separate the two signals. The sensing element construction allows for locating up to three active elements measuring the same target.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 11, 2013
    Inventors: David Scott Nyce, Leonard Hillel Goldman
  • Publication number: 20130043888
    Abstract: A wireless damage detector for ceramic armor plates includes an interrogator and a body armor ceramic plate. The interrogator includes an inductive primary coil having a resonant frequency. The plate includes a corresponding inductive secondary coil adapted to cooperate with the primary coil when the interrogator is positioned in an interrogation position wirelessly adjacent the plate. When in the interrogation position, the primary and secondary coils are inductively coupled, that is, form an inductive coupling, when the primary coil is energized at the resonant frequency. The plate includes at least one self-contained frangible continuity circuit electrically connected to the secondary coil. The inductive coupling induces an electrical current flow in the continuity circuit when the circuit is undamaged. A detector cooperates with the primary and secondary coils when the interrogator is in the interrogation position. The detector detects the inductive coupling. An indicator cooperates with the detector.
    Type: Application
    Filed: April 29, 2011
    Publication date: February 21, 2013
    Inventor: Roger J. Soar
  • Publication number: 20130021043
    Abstract: A position sensor includes a detector, an oscillation circuit, a signal processing circuit, and a resonance circuit having a detection coil and a capacitor. The oscillation circuit forms a negative feedback loop from: an amplitude detection circuit that detects an amplitude of an oscillation signal outputted from the resonance circuit; an integrating circuit that outputs a signal corresponding to a difference between a predetermined reference voltage and the amplitude of the oscillation signal; a negative conductance control circuit that, based on the output of the integrating circuit, controls the negative conductance of the oscillation circuit such that the amplitude of the oscillation signal is equals to the predetermined reference voltage; and an operational amplifier that adjusts such that the oscillation voltage of the resonance circuit is equal to the applied voltage of the negative conductance control circuit.
    Type: Application
    Filed: February 23, 2011
    Publication date: January 24, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Masahisa Niwa, Kunitaka Okada
  • Patent number: 8331621
    Abstract: A toll violation enforcement system that contains a capture unit that receives a trigger signal and takes vehicle images of passing vehicles. A lighting unit configured to operate continuously is provided to establish a major lighting source incident on the vehicle. A processing unit is provided that processes the vehicle image and controls the settings employed by the capture unit. The processing unit preferably contains a plate location module for extracting an original resolution license plate area image from a first vehicle image; an exposure control module for controlling the exposure setting on the capture unit to provide consistent intensity of the license plate area; a resolution reset module for changing the image resolution for a second vehicle image; an image enhancement module for brightening pixels of the second vehicle image; and an image compression module for compressing the license plate area image and second vehicle image to a predetermined format.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: December 11, 2012
    Assignee: United Toll Systems, Inc.
    Inventors: Jim Allen, Sheng Zhong, Raghavan Venugopal, Balaraju Banna, Xidong Zheng
  • Publication number: 20120293188
    Abstract: An apparatus for, and methods of use for, measuring film thickness on an underlying body are provided. The apparatus may include at least one Impedance Resonance (IR) sensor, which may include at least one sensing head. The at least one sensing head may include an inductor having at least one excitation coil and at least one sensing coil. The excitation coil may propagate energy to the sensing coil so that the sensing coil may generate a probing electromagnetic field. The apparatus may also include at least one power supply, at least one RF sweep generator electrically connected to the excitation coil; at least one data acquisition block electrically connected to the sensing coil; at least one calculation block; and at least one communication block. Methods of monitoring conductive, semiconductive or non-conductive film thickness, and various tools for Chemical Mechanical Polishing/Planarization (CMP), etching, deposition and stand-alone metrology are also provided.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 22, 2012
    Applicant: NeoVision, LLC
    Inventors: Yury Nikolenko, Matthew Fauss