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| Number | Title | Issue Date |
| 8076932 | Device and method for measuring the position of a mobile part A device for measuring the position of a mobile part (4), includes: at least one magnetic node (10) capable of modulating the amplitude of an excitation magnetic field according to the amplitude of a magnetic field to be measured, the magnetic node hav... | 12/13/2011 |
| 8076931 | Current and magnetic field sensors, control method and magnetic core for said sensors The invention relates to a magnetic field sensor comprising at least one magnetic core (10) in which the magnetic cycle of the magnetic core is characterised in that the absolute value of the third derivative of the magnetic flux density in relation to the ma... | 12/13/2011 |
| 7898250 | Coupled fluxgate magnetometers for DC and time-varying target magnetic field detection An apparatus for sensing and processing a magnetic flux signal comprising: an odd number of at least three fluxgate modules, a summer, and a processor. Each fluxgate module is configured to generate a module response signal upon receiving the magnetic flux signal. T... | 03/01/2011 |
| 7859259 | Magnetic filed compensation system with increased bandwidth The invention relates to a device for compensating for magnetic fields which has two sensors which are active in different frequency ranges and thus allows regulation with a bandwidth from 0 to 20 kHz. ... | 12/28/2010 |
| 7847543 | Precision flexible current sensor A flexible current sensor including a sensing cable with a sensing coil wound on a cylindrical flexible core and electrical shielding located over said sensing coil and an outer isolation coat. The electrical shielding includes a plurality of individually isolated s... | 12/07/2010 |
| 7834620 | Orthogonal fluxgate magnetic field sensor Orthogonal fluxgate sensor for measuring an external magnetic field Hext, comprising a conductor for carrying an excitation current lexc, a ferromagnetic material adapted to saturate in the presence of a magnetic field generated by the excitation current, and at lea... | 11/16/2010 |
| 7737687 | Fluxgate sensor having conbzr magnetic core and fabrication method thereof A fluxgate sensor includes a magnetic core including CoNbZr, an excitation coil, and a magnetic field sensing coil. The fluxgate sensor can use CoNbZr. A low coercivity and high magnetic permeability can be obtained. ... | 06/15/2010 |
| 7652472 | Magnetic sensor signal detection circuit using a counter A signal detection circuit of a magnetic sensor includes a differential amplifier to which an output voltage of a detecting coil of the magnetic sensor is applied; a comparator to which the output of the differential amplifier is input, the comparator outputting a d... | 01/26/2010 |
| 7622918 | Solenoid magentometer A magnetometer assembly (22) for a torque transducer (10) includes inner and outer coils (34,38,36,40) wrapped and supported on a bobbin assembly (22). The bobbin assembly (22) includes upper and lower axial portions (21,23)... | 11/24/2009 |
| 7557571 | Fluxgate sensor integrated in semiconductor substrate and method for manufacturing the same A fluxgate sensor is integrated in a semiconductor substrate. The fluxgate sensor has two bar type soft magnetic cores, or a rectangular-ring type soft magnetic core to form a closed magnetic path on the semiconductor substrate, with an excitation coil formed of a m... | 07/07/2009 |
| 7535221 | Magnetic sensor element and electronic directional measuring device A magnetic sensor element of a flux gate type comprising a magnetism sensitive part (8a) formed by winding a coil (3) around a magnetic core layer (8), and magnetism collective part (8b) for guiding magnetic fluxes to the ma... | 05/19/2009 |
| 7420366 | Coupled nonlinear sensor system A sensor system employing a plurality of nonlinear sensors utilizes a coupling network to interconnect the sensors wherein the coupling network inherently induces oscillations in the sensor system. This approach removes the need to provide bias signal generation eit... | 09/02/2008 |
| 7414399 | Micromagnetometer of the fluxgate type with improved excitation coil The invention relates to a fluxgate micromagnetometer implemented in thin layers, fitted with at least one excitation coil with an arrangement and a structure that bring improvements particularly in terms of the magnetometer footprint, reduction in the “offsets”... | 08/19/2008 |
| 7407596 | Fluxgate sensor integrated in printed circuit board and method for manufacturing the same A fluxgate sensor is integrated in a printed circuit board. The fluxgate sensor has two bar-type (or rectangular-ring shaped) soft magnetic cores to form a closed magnetic path on a printed circuit board and an excitation coil in the form of a metal film is wound ar... | 08/05/2008 |
| 7405561 | Reduced power sensing apparatus having fluxgate and control method thereof A sensing apparatus includes a fluxgate module which outputs an analog signal corresponding to terrestrial magnetism using a fluxgate having a magnetic substance core and a driving coil, and an analog-to-digital (A/D) converter which converts an analog signal output... | 07/29/2008 |
| 7394249 | Printed circuit board with weak magnetic field sensor Disclosed is a printed circuit board with a weak magnetic field sensor according to the present invention, which includes a substrate having first excitation circuits and first detection circuits formed on both sides thereof. First laminates are layered on both side... | 07/01/2008 |
| 7391211 | Digital fluxgate magnetometer A circuit for a fluxgate magnetometer includes a plurality of digital function blocks that are programmed as functions within a microcontroller. The microcontroller includes and implements the functions of an analog circuit to lower the cost and complexity of a digi... | 06/24/2008 |
| 7391210 | Integrated fluxgate-induction sensor An integrated fluxgate-induction sensor is formed of a combined fluxgate sensor and induction sensor using a common core. The sensor may be in serial operation where it switches between a fluxgate mode for measuring static magnetic fields and an induction mode for m... | 06/24/2008 |
| 7382123 | Micro fluxgate sensor and method of manufacturing the same A micro-machining method of manufacturing a micro fluxgate sensor manufactured having an amorphous magnetic core includes forming lower coils of an excitation coil and a magnetic field detecting coil on a wafer, depositing a first insulating layer on the lower coils... | 06/03/2008 |
| 7378843 | Pulsed excitation and sampled detection fluxgate type magnetometer A magnetic field measuring device, equipped with a fluxgate magnetometer, the device including a magnetic sensor equipped with at least one magnetic core and a plurality of windings, and configured to deliver at least one output signal, pulse generating means for em... | 05/27/2008 |
| 7372261 | Printed circuit board integrated with a two-axis fluxgate sensor and method for manufacturing the same A printed circuit board integrated with a two-axis fluxgate sensor includes a first soft magnetic core formed lengthwise in a first axial direction, a first excitation coil formed of a metal film and wound around the first soft magnetic core, a first pick-up coil fo... | 05/13/2008 |
| 7363827 | Torque sensor system including an elliptically magnetized shaft A torque sensor includes a shaft and a magnetic sensor. The shaft may have at least one active region having an elliptical magnetization. The magnetic sensor may be configured to sense a magnetic field about the shaft, where the magnetic field is representative of a... | 04/29/2008 |
| 7366619 | Signal-processing unit for fluxgate magnetometers A signal processing unit includes an integrating unit. The integrating unit is composed of a plurality of digital elements and is operative to integrate a detection signal over every quarter of one cycle of the detection signal to generate an integration value. The ... | 04/29/2008 |
| 7362086 | Integrated current sensor A current sensor includes coupled inductors that generate an output current responsive to a detected current. The coupled inductor is implemented in an integrated circuit. An integrator circuit generates a sensed voltage responsive to the output current. ... | 04/22/2008 |
| 7363185 | Fluxgate sensor for calibrating azimuth at slope and calibration method thereof A two-axis fluxgate sensor has a driving pulse generating circuit which generates pulse signal and outputs as a driving signal, and X-axis and Y-axis fluxgates which are in proportional relation with each other. The two-axis fluxgate sensor generates voltage values ... | 04/22/2008 |
| 7355397 | Magentometer circuit A fluxgate magnetometer drive circuit includes a fluxgate inductor that is driven through magnetic saturation by altering voltage pulses. Following each drive pulse, the spurred magnetic energy in the fluxgate is allowed to dissipate by connecting a fluxgate across ... | 04/08/2008 |
| 7353614 | Vehicle compass system with continuous automatic calibration The compass system of the present invention utilizes an improved calibration routine in which a processing circuit of the compass recalibrates the compass each time three data points are obtained from a magnetic field sensor that meet predetermined criteria. One suc... | 04/08/2008 |
| 7355587 | Method and apparatus for computer input using six degrees of freedom A computer input device includes a camera for capturing an image of a pattern on a surface. A processor in the computer input device determines equations for lines from the image of the pattern, applies the line equations to a transform to form transformed line equa... | 04/08/2008 |
| 7355398 | Exciting coil drive circuit of magnetic sensor An exciting coil drive circuit of a magnetic sensor comprises a D/A converter that receives input of digital data for detecting a magnetic field; a first amplifier that outputs a drive signal P applied to one end of an exciting coil of the magnetic sensor based on t... | 04/08/2008 |
| 7355392 | Printed circuit card-based proximity sensor and associated method of detecting a proximity of an object A proximity sensor assembly includes a multilayer printed wiring board proximity sensor, the proximity sensor being operable as either a variable-reluctance sensor or an eddy current loss sensor. The proximity sensor includes a plurality of layers configured to form... | 04/08/2008 |
| 7350425 | Method of eliminating hysteresis from a magnetoelastic torque sensor A method and device for reducing hysteresis in a torque transducer element includes a coil that is excited with an alternating current to produce a magnetic field that saturates the torque transducer element. Magnetic saturation of the torque transducer element is p... | 04/01/2008 |
| 7352177 | Three-axis fluxgate-type magnetism detecting device and method A three-axis fluxgate-type circuit having three fluxgate sensors for outputting three analog voltage values respectively. A controller normalizes three digital voltage values corresponding to said three analog voltage values, select a set of linear voltage values fr... | 04/01/2008 |
| 7348772 | Printed circuit board having weak magnetic field sensor and method of manufacturing the same A Printed Circuit Board (PCB) having a weak magnetic field sensor of the present invention includes a base plate on which a first excitation circuit and a first detection circuit are formed on each of the sides thereof, soft magnetic core bodies laminated on the top... | 03/25/2008 |
| 7343136 | Apparatus for detecting environmental conditions for a structure or article An apparatus for detecting environmental conditions for a structure or article. The apparatus comprises one or more sensors for sensing conditions at the component or articles and producing one or more signals and a wireless transmitter for wirelessly transmitting d... | 03/11/2008 |
| 7343243 | Fully automated vehicle dispatching, monitoring and billing A system for controlling vehicles (20) to provide transportation services without need for human intervention. A database (10) stores records each documenting needed transportation services. Processing circuitry (which may be one or several networked c... | 03/11/2008 |
| 7339450 | Inductive miniature component, especially antenna Disclosed is an inductive miniature structural element, particularly an antenna. Said structural element comprises a winding member (1) which is embodied as a flat component and on which three coil windings (2X, 2Y, 2Z) are mounted in suc... | 03/04/2008 |
| 7320255 | Torque sensor magnetometer The magnetometer assembly according to this invention includes a first coil assembly and a second coil assembly for detecting separate magnetic fields along an axial portion of a torque transducer. The first and second coil assemblies are driven by independently adj... | 01/22/2008 |
| 7317315 | Magnetic azimuth measurement apparatus A magnetic azimuth measurement apparatus without arithmetic means nor any mechanical motion such as rotation, not affecting its mass production ability because of a simple configuration, and making it possible to measure a azimuth in higher precision, is provided. A... | 01/08/2008 |
| 7298140 | Three-dimensional magnetic direction sensor, and magneto-impedance sensor element A three-dimensional magnetic bearing sensor 10a includes a first sensor 101, a second sensor 102, and a third sensor 103 each constituted by a magneto-impedance sensor element 10 comprising a magnetic sensitive member 2 | 11/20/2007 |
| 7298141 | Fluxgate and fluxgate magnetometers A flexible fluxgate including: at least two ferromagnetic or ferrimagnetic, flexible cores; at least two sets of a plurality of windings of an electrically conductive material, at least one set of windings being wo... | 11/20/2007 |
