| Entries |
| Document | Title | Date |
|---|
| 20080197836 | Position Encoder - An inductive position encoder is described having first and second members which are relatively moveable over a measurement path, a magnetic device mounted on the first member; a plurality of first windings mounted on the second member; and a second winding. The magnetic device is operable to interact with the windings such that upon the energisation of either the second winding or the first windings, there is generated a plurality of sensor signals each being associated with a respective one of said first windings and varying with the relative position between said magnetic device and the associated first winding and hence with the relative position between said first and second members. Additionally, the plurality of first windings are arranged along said measurement path so that the sensor signals vary substantially in accordance with a predetermined Gray code. | 08-21-2008 |
| 20080197837 | Method and Device for Locating the Right or Left Position of a Wheel of a Vehicle - The invention relates to a method and a device for locating the right or left position of a wheel ( | 08-21-2008 |
| 20080211489 | INDUCTIVE SENSOR - An inductive sensor has an electrically nonconductive substrate, at least one electrically conducting coil that is integrally joined to the substrate, with the mechanical rigidity of the substrate significantly greater than that of the conducting coil, a metal plate covering the conducting coil, with the substrate comprised by the metal plate, and with the surface of the metal plate on the side oriented toward the conducting coil provided with an electrically insulating layer. | 09-04-2008 |
| 20080284418 | Systems and Methods for Determining the Position of an Electrical Solenoid - Provided herein are systems and methods which use the solenoid itself to sense the position of the armature within the solenoid, and therefore to determine the position of the solenoid's armature, and or any related devices whose movement is dependent on the armature's movement. Specifically, a system in which the change in self-induction that occurs when the armature moves relative to the solenoid coil is used to detect the location of the armature. | 11-20-2008 |
| 20080290861 | DISPLACEMENT SENSOR - An oscillator circuit outputs an oscillator signal with a frequency corresponding to an inductance of a displacement detector coil. An oscillation cycle measurement circuit measures a cycle of the oscillator signal output from the oscillator circuit, and outputs a signal corresponding to the measured cycle. A squaring circuit calculates and outputs a square of the signal output from the oscillation cycle measurement circuit. By the calculation and output of the square of the oscillator signal cycle, a square root component of the product of inductance and capacitance components is eliminated, so that the output signal changes linearly relative to the displacement of a displacement body. As a result, the linearity of the output signal relative to the displacement of the displacement body can be improved. | 11-27-2008 |
| 20080315868 | Position Sensor - A position sensor with excellent linearity of coil impedance is provided. This position sensor is equipped with a tubular detection coil, a magnetic core movable in the detection coil, a drive circuit for the detection coil, a signal processing circuit for converting a change in impedance of the detection coil into an electric signal, and a shield member disposed around the detection coil. The shield member is a tubular member having a first inner surface for surrounding an axial region of the detection coil, and a second inner surface for surrounding another axial region of the detection coil. The tubular member is formed such that a distance between the second inner surface and the detection coil is smaller than the distance between the first inner surface and the detection coil. | 12-25-2008 |
| 20090001969 | SYSTEM AND METHOD FOR ELECTROMAGNETIC NAVIGATION OF A MAGNETIC FIELD GENERATING PROBE - An electromagnetic navigation probe includes a structural component, a magnetic field generator coupled to the structural component for generating a magnetic field and an actuator for varying the magnetic field as a function of time and space such that a location of the probe in three dimensional space can be determined. | 01-01-2009 |
| 20090021245 | LINEAR AND ROTATIONAL INDUCTIVE POSITION SENSOR - An apparatus for providing a signal related to a position of a part comprises an exciter coil, and a receiver coil disposed proximate to the exciter coil. The exciter coil generates magnetic flux when the exciter coil is energized by a source of electrical energy, such as an alternating current source. The receiver coil generates a receiver signal when the exciter coil is energized, due to an inductive coupling between the receiver coil and the exciter coil. The receiver coil has a plurality of sections, the inductive coupling tending to induce opposed voltages in at least two of the sections. Embodiments of the present invention include linear sensors, rotational sensors, and novel configurations for improved ratiometric sensing. | 01-22-2009 |
| 20090039873 | Inductive presence or position sensor - An inductive sensor or detector includes as its sensitive element, preferably defining a front working plane of the sensor, a coil system forming an air-core transformer arrangement with a primary coil or winding ( | 02-12-2009 |
| 20090079422 | INDUCTIVE POSITION SENSOR - A position sensor having a transmitter coil with both an outer loop portion and an inner loop portion. A receiver coil is disposed in close proximity to the transmitter coil and the receiver coil includes a first loop and an oppositely wound second loop. The receiver coil generates an electrical output signal when the transmitter coil is excited due to the inductive coupling between the transmitter and receiver coils. A movable coupler element varies the inductive coupling between the transmitter coil and the loops of the receiver coil as a function of the position of the coupler element. | 03-26-2009 |
| 20090091313 | Inductive position sensor with integrated led indicators - A system for use in association with a mechanical transmission, including a gear selector lever movable between a plurality of shift positions corresponding to respective transmission settings, an inductive position sensor that senses a shift position of the gear selector lever, and a visual indicator that provides a visual indication of the selected transmission setting. The position sensor includes inductive sensor elements electromagnetically coupled together and sensor circuitry integrated onto a circuit board which generates a sensor output signal corresponding to the shift position of the gear selector lever. The visual indicator includes an indicator panel having alphanumeric characters that designate respective transmission settings, a plurality of LEDs integrated onto the circuit board and positioned adjacent respective ones of the alphanumeric characters, and control circuitry that provides a control signal in response to the sensor output signal which illuminates or brightens an LED positioned adjacent a respective one of the alphanumeric characters corresponding to the selected transmission setting. | 04-09-2009 |
| 20090091314 | Position Sensor - There is described a position sensor comprising a sensor electromagnetic field generator, a screen arranged to confine the sensor electromagnetic field, and an output. The output is arranged to provide a signal which varies in dependence upon an amount of flux compression of the electromagnetic field resulting from the presence of the screen. The amount of flux compression is related to a position of the screen in relation to the sensor electromagnetic field generator. There is also described a method of detecting a relative position of an electromagnetic field generator and a screen. | 04-09-2009 |
| 20090102463 | Sensor Device and Method of Measuring a Position of an Object - A sensor device for measuring a position of an object which is made of an inductivity influencing material. The sensor device includes a sensor unit and a processing logic arrangement. The sensor unit includes a magnetic field generator and a magnetic field detector. The magnetic field detector detects a magnetic field generated by the magnetic field generator. The processing logic arrangement processes signals from the magnetic field detector to determine the position of the object. The object is movable with respect to the magnetic field generator. | 04-23-2009 |
| 20090108835 | Concept for Generating a Magnetic Field in a Goal Area for Taking a Goal Decision - A device for generating a magnetic field in a goal area with at least two coils arranged in parallel to a goal area defined and bounded by a goal, wherein a first coil is attached in an area behind the goal and a second coil is attached closer to the goal than the first coil or identical to the goal, wherein the first coil and the second coil respectively have a coil impedance, wherein the coil impedance of the second coil is set so that a magnetic field of the second coil generated due to a magnetic field of the first coil reduces the magnetic field of the first coil at a location within the second coil by at least 20%. | 04-30-2009 |
| 20090140727 | APPARATUS AND METHODS FOR PROXIMITY SENSING CIRCUITRY - An inductive proximity sensor is disclosed. The proximity sensor includes a source circuit with an inductive element configured to deliver energy to a resonator when a source current is changed. In various embodiments, the source current is provided a step current source. In various embodiment, the source current is provided by constant current source coupled to the inductive element by a switch. Apparatus and methods for operating the inductive proximity sensor are disclosed. | 06-04-2009 |
| 20090140728 | APPARATUS AND METHODS FOR PROXIMITY SENSING CIRCUITRY - An inductive proximity sensor is disclosed. The proximity sensor includes a resonator with a bifurcated inductance coupled to a plurality of transimpedance amplifiers. A portion of the resonator is configured to generate eddy currents in a target containing metal. In various embodiments, the transimpedance amplifiers provide signals associated with eddy currents to a synchronous detector. Apparatus and methods for operating the inductive proximity sensor are disclosed. | 06-04-2009 |
| 20090160434 | INCREMENTAL DISPLACEMENT TRANSDUCER AND METHOD FOR DETERMINING A DISPLACEMENT OF A FIRST OBJECT RELATIVE TO A SECOND OBJECT - The present invention relates to an incremental displacement transducer for determining a displacement of a first object relative to a second object having a scanning unit linked or to be linked with the first object for scanning a spacing or division track linked or to be linked with the second object having first areas and second areas arranged in alternating manner with a period length, the first areas having a first physical property and the second areas a second physical property differing therefrom, and where the scanning unit has a plurality of sensors for scanning the first areas and the second areas on the basis of the first and/or second physical property, and having an evaluation unit linked with the scanning unit for determining the displacement on the basis of measuring signals of the sensors. The incremental displacement transducer is characterized in that the scanning unit has at least four sensors which are mutually spaced from one another over at least one period length of the spacing track, that at least one first signal can be generated from the measuring signals of the sensors in the evaluation unit for determining the displacement, that the first switching signal assumes a first value if the measuring signal of a first selected sensor of a first subgroup of sensors assumes a maximum value within the first subgroup and simultaneously the measuring signal of a second selected sensor of a second subgroup of sensors assumes a maximum value within the second subgroup and/or that the first switching signal assumes a first value if the measuring signal of a third selected sensor of a third subgroup of sensors assumes a maximum value within the third subgroup and simultaneously the measuring signal of a fourth selected sensor of a fourth subgroup of sensors assumes a maximum value within the fourth subgroup, and that the first switching signal otherwise assumes a second value, each subgroup comprising at least two sensors. The invention also relates to a method for determining a displacement of a first object relative to a second object. | 06-25-2009 |
| 20090189600 | METAL FACE INDUCTIVE PROXIMITY SENSOR - Metal face inductive proximity sensors and methods are presented for sensing the presence or absence of a target object in a target sensing area in which a coil system is operated to generate a magnetic field extending outward from the sensing face at a frequency in a range that maximizes a relative target effect for the sensing face area, material, and thickness, and a target material from which the target object is made to allow the protective advantages of metal sensing face materials while enhancing sensing distance by optimizing the ratio of the target energy loss to the energy loss in the metal face. | 07-30-2009 |
| 20090219014 | ROTATION SENSOR - A rotation sensor including: a main rotor that integrally rotates with a rotor to be measured; a sub-rotor that rotates in accordance with rotation of the main rotor with a different number of revolutions from that of the main rotor; a first detector detecting rotation of the main rotor; and a second detector detecting rotation of the sub-rotor. The rotation sensor detects an absolute rotation angle of the rotor to be measured from detection signals from the first detector and the second detector. Respective detection signals obtained from the first detector and the second detector are cyclically output in accordance with rotation of each rotor, and the following relationship is satisfied: | 09-03-2009 |
| 20090243596 | POSITION-MEASURING DEVICE AND METHOD FOR ITS OPERATION - A position-measuring device includes a measuring standard, on which at least one graduation track is applied, and a support member. Disposed on the support member is at least one exciter winding through which an excitation current is able to be conducted in order to generate an electromagnetic field, as well as at least one detector system for scanning the electromagnetic field, The position-measuring device further includes a capacitor which, together with the exciter winding, forms an LC oscillating circuit, an evaluation element and a switching element that is switchable by the evaluation element. The measuring standard and the support member are disposed in a manner allowing movement relative to each other, and in response to a movement of the measuring standard relative to the support member, the electromagnetic field is able to be influenced by the at least one graduation track. The LC oscillating circuit is operable by switching the switching element with an excitation current which induces in the detector system at least one voltage that is able to be processed electronically by the evaluation element to ascertain position information. The excitation current is generated by switching the switching element with switch-on pulses that have an ON time period, and the at least one voltage induced in the detector system is measured in the area after the cut-off edge of the switch-on pulse for ascertaining the position information. | 10-01-2009 |
| 20090289620 | Clearance determination device - A device is provided for measuring the clearance between a member and a surface over and relative to which the member moves. The device has a first reference element, and a second reference element which faces the first reference element, and is movable to alter the distance to the first reference element. The device further has a fastening system for fastening the device to the member so that, during the relative motion, the first reference element is held in a fixed position relative to the member and the second reference element slides over the surface. The device further has an urging arrangement which urges the second reference element into contact with the surface so that, as the second reference element slides over the surface and the clearance between the member and the surface varies, the second reference element moves relative to the first reference element. The device further has a sensor which measures the distance between the first and second reference elements. | 11-26-2009 |
| 20090289621 | PROBE AND COIL FIXED THERETO FOR ESTABLISHING THE SPATIAL LOCATION OF A PROBE BODY AND A METHOD OF FIXEDLY POSITION A MAGNETIC GENERATING MEANS TO A PROBE BODY AND A SYSTEM FOR OBTAINING GEOMETRICAL DATA RELATED TO A CAVITY - Disclosed is a probe for obtaining geometrical data related to a cavity, the probe comprising a probe body comprising a first coupling means; at least one magnetic field generating device comprising a support member and a means for generating a magnetic field; wherein said means for generating a magnetic field being connected to the support member so as to fix a position of said means for generating a magnetic field relative to said support member and wherein said support member comprises a second coupling means configured to engage the first coupling means so as to connect the at least one magnetic field generating device to said probe body. | 11-26-2009 |
| 20090309578 | Sensor inductors, sensors for monitoring movements and positioning, apparatus, systems and methods therefore - A generally planar shaped inductor is disclosed that is particularly adaptable for use in motion or position sensors. One inductor can function as a signal input unit and another as a pick up unit in an arrangement wherein both inductors are placed in a generally parallel juxtaposition for flux flow there between. A movable armature is located between the inductors to control the amount of flux transmission between inductors. The position of the armature relative to the inductors controls the output signal generated by the pickup inductor that are adapted to be converted into indications of displacements. | 12-17-2009 |
| 20090309579 | Sensor inductors, sensors for monitoring movements and positioning, apparatus, systems and methods therefore - A generally planar shaped inductor is disclosed that is particularly adaptable for use in motion or position sensors. One inductor can function as a signal input unit and another as a pick up unit in an arrangement wherein both inductors are placed in a generally parallel juxtaposition for flux flow there between. A movable armature is located between the inductors to control the amount of flux transmission between inductors. The position of the armature relative to the inductors controls the output signal generated by the pickup inductor that are adapted to be converted into indications of displacements. | 12-17-2009 |
| 20100060270 | Method and System for Inductive Proximity Sensing that Includes Mounting Effect Compensation - An inductive proximity sensor and related method for sensing a presence/position of a target, with mounting effect compensation, are disclosed. In at least one embodiment, the method includes providing a proximity sensor having first and second coils that are both at least indirectly in communication with control circuitry. The method also includes receiving respective first and second signals at least indirectly indicative of respective first and second electromagnetic field components respectively experienced by the first coil as influenced both by a target and a structure supporting the sensor and the second coil as influenced by the supporting structure. The method further includes determining by way of the circuitry a third signal based at least in part upon the first signal, as modified based at least in part upon the second signal, whereby the third signal is indicative of the presence or position of the target relative to the sensor. | 03-11-2010 |
| 20100079136 | Blade tip clearance measurement sensor and method for gas turbine engines - An electromagnetic field sensor assembly for blade tip clearance measurement in a gas turbine engine is disclosed that includes a ceramic sensor body, a multi-layered wire coil wound about a distal end portion of the sensor body for producing an electromagnetic field, a ceramic well enclosing the sensor body and the coil, and a metallic housing surrounding the well and having an open distal end. | 04-01-2010 |
| 20100127694 | SYSTEM AND METHOD FOR SENSING THE PERIODIC POSITION OF AN OBJECT - A system and method for sensing the periodic position of one or more objects, such as rotating blades of a turbine. The system includes a passive eddy current sensing unit having one or more magnets and first and second cores around which first and second coils are wound, respectively, which together generate first and second magnetic fields. The sensing unit is positioned so that the object periodically passes through the first and second magnetic fields in succession, and the first and second coils consequently produce first and second output signals, respectively. Each coil is individually connected to a processing circuitry that receives each of the first and second output signals. The circuitry electronically combines the first and second output signals so that common mode signals thereof electronically subtract from each other to eliminate from output of the circuitry any electromagnetic interference noise present in the first and second output signals. | 05-27-2010 |
| 20100127695 | INDUCTIVE SENSORS - An inductive sensor is operable for detecting a relative position of, or movement between, a member and at least one inductor. An electrical parameter associated with the inductor is caused to change as a result of a change of inductive coupling in response to a change in relative position of the inductor and the member. The sensor further comprises means for setting a datum value of the electrical parameter. The setting means comprises a component that is moveable so as to adjust the inductive coupling while the member is in a datum position. | 05-27-2010 |
| 20100181995 | Position sensor - An electromagnetic induction type rotary encoder includes an excitation board including an excitation coil, a detection board fixed to a movable element to face the excitation board and including a detection coil placed to face the excitation coil with a clearance therefrom, and a controller for outputting an excitation signal to the excitation coil and processing a detection signal output from the detection coil. The controller includes an excitation circuit for exciting the excitation coil at high frequency and a high-frequency generating circuit, a demodulation circuit for demodulating a signal from the detection coil in accordance with excitation to the excitation coil, a waveform shaping circuit for waveform shaping a signal from the demodulation circuit, and a pulse generating circuit for outputting a pulse signal based on the signal from the waveform shaping circuit. Each of the excitation coil and the detection coil is formed in a meandering coil pattern. | 07-22-2010 |
| 20100237855 | Protective system for a multiple channel transformer probe - The invention provides a transformer probe for sensing movement of a body of magnetic material, having multiple output channels wherein the output in each output channel is substantially unaffected by faults in other output channels. The transformer probe comprises a magnetically energisable pole piece, a sensing circuit comprising an electrical circuit having a portion, remote from the pole piece, which forms first and second transformer primary coils, a first output circuit comprising a first transformer secondary coil, inductively coupled to the first primary coil via a first transformer core, and terminated by a first load resistance, and means for measuring an output signal from the secondary circuit, a second output circuit comprising a second transformer secondary coil, inductively coupled to the second primary coil via a second transformer core and terminated by a second load resistance and means for measuring an output signal from the second secondary coil, and an inductive coupling, or resistive electrical component, connected across each primary coil, having an impedance within the sensing circuit such that a change from a normal circuit condition to an open circuit condition within the first or second output circuit does not significantly affect the voltage across the first and second primary coils. | 09-23-2010 |
| 20100327855 | PTFE GRAPHITE COATING COMPOSITION, METHOD AND APPARATUS - A non-stick coating application for high heat welding environments comprised of a fluorinated polymer combined with acidified graphite to which a hardening agent, such as alumina, may be added in some embodiments. | 12-30-2010 |
| 20100327856 | Security Device - A security device for protecting stored sensitive data includes a closed housing including an array of conductor paths and tamper detecting means adapted to detect a change in impedance of the array of conductor paths above a predetermined threshold value. | 12-30-2010 |
| 20110012592 | MAGNETIC FLUX OIL LEVEL SENSOR FOR USE IN AIRCRAFT LUBRICATION SYSTEMS - A magnetic flux position sensor includes a primary coil, a secondary coil, and a magnetic flux conductor. The primary coil generates a magnetic flux and the secondary coil senses magnetic flux. The primary and secondary coils are substantially concentric and spaced apart by an annular passage. The annular passage has first and second ends, and the magnetic flux conductor is slidable from the first end to the second end of the annular passage. The magnetic flux transferred from the primary coil to the secondary coil varies as a function of position of the magnetic flux conductor. | 01-20-2011 |
| 20110043196 | SHEET COIL TYPE RESOLVER - A sheet coil type resolver includes: a stator section in which a stator transformer coil composed of first and second stator transformer coil layers is disposed to axially overlap with a resolver stator coil composed of first and second resolver stator coil layers; and a rotor section in which a rotor transformer coil composed of first and second rotor transformer coil layers is disposed to axially overlap with a resolver rotor coil composed of first and second resolver rotor coil layers, whereby the axial dimension is reduced, lead wires can be easily led out from the coils, and high reliability is achieved. | 02-24-2011 |
| 20110095751 | Detection of magnetic beads using a magnetoresistive device together with ferromagnetic resonance - A method and apparatus for detecting the presence of magnetic beads is disclosed. By providing both a static magnetic field and a magnetic field that alternates in the MHz range, or beyond, the bead can be excited into FMR (ferromagnetic resonance). The appearance of the latter is then detected by a magneto-resistive type of sensor. This approach offers several advantages over prior art methods in which the magnetic moment of the bead is detected directly. | 04-28-2011 |
| 20110133727 | Inductive Position Sensor - An inductive position sensor uses three inductors. First and second inductors are separated by a fixed distance with the first inductor's axial core and second inductor's axial core maintained parallel to one another. A third inductor is disposed between the first and second inductors with the third inductor's axial core being maintained parallel to those of the first and second inductors. The combination of the first and second inductors are configured for relative movement with the third inductor's axial core remaining parallel to those of the first and second inductors as distance changes from the third inductor to each of the first inductor and second inductor. In operation, a source supplies an oscillating current to at least one of the three inductors, while another device measures voltage induced in at least one of the three inductors not supplied with the oscillating current. The voltage so-induced is indicative of an amount of the relative movement between the third inductor and the combination of the first and second inductors. | 06-09-2011 |
| 20110210721 | Sensor inductors, sensors for monitoring movements and positioning, apparatus, systems and methods therefore - A generally planar shaped inductor is disclosed that is particularly adaptable for use in motion or position sensors. One inductor can function as a signal input unit and another as a pick up unit in an arrangement wherein both inductors are placed in a generally parallel juxtaposition for flux flow there between. A movable armature is located between the inductors to control the amount of flux transmission between inductors. The position of the armature relative to the inductors controls the output signal generated by the pickup inductor that are adapted to be converted into indications of displacements. | 09-01-2011 |
| 20120062217 | Resolver - 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. | 03-15-2012 |
| 20120092002 | SENSOR ARRANGEMENT FOR DETERMINING THE CURRENT ROTATION ANGLE POSITION OF A SHAFT - A sensor arrangement is provided for determining the current rotation angle position of a shaft with respect to a stationary reference point. In order to determine the rotation angle position without wear and tear and with little outlay on materials and little energy requirement during ongoing operation, the coil is arranged between the shaft and a stationary reference point in such a manner that at least one geometrical property of the coil can be changed over the range of rotation angle positions of the shaft. The changed geometrical property of the coil is used to determine the rotation angle position of the shaft. | 04-19-2012 |
| 20120146626 | METHOD AND ARRANGEMENT FOR DETERMINING THE POSITION OF A ROTOR IN A BRUSHLESS MOTOR OR IN STEPPER MOTOR - Method for determining the position of a rotor in a brushless motor or in a stepper motor, said method including the following steps: applying a voltage in at least one powered phase of the motor; measuring, in an unpowered phase of the motor, the voltage induced by mutual inductance between phases; and determining said position and/or the speed of the rotor from said induced voltage. | 06-14-2012 |
| 20120200286 | RESOLVER - A SIN signal detection coil is divided into two parts in a circumferential direction and further into two parts in a radial direction so that a SIN-coil first part and a SIN-coil second part are arranged on an outer circumferential side and a SIN-coil third part and a SIN-coil fourth part are arranged on an inner circumferential side. The SIN-coil first part and third part are placed in the same position in the circumferential direction and to face each other in a radial direction. The SIN-coil second part and fourth part are placed in the same position in the circumferential direction and to face each other in the radial direction. The SIN-coil first part and fourth part are placed in the first coil layer. The SIN-coil second part and third part are placed in the second coil layer. | 08-09-2012 |
| 20120223700 | STEERING POSITION AND TORQUE SENSOR - A sensor circuit for use with a shaft assembly rotatably mounted in a housing and having an input shaft, an output shaft and a torsion bar which connects the input and output shafts together. A CR coil mounted to the housing around the shaft assembly is energized and generates an electromagnetic field. An RX coil is mounted to and rotates with the shaft assembly and has an output connected to a power circuit to generate electrical energy when excited by the electromagnetic field from the first coil. The power circuit powers an angle sensor which transmits a signal back to the first coil representative of the angle between the input and output shafts. | 09-06-2012 |
| 20120223701 | LINEAR POSITION SENSOR - A device for measuring the position of a target includes a track, which includes a primary winding ( | 09-06-2012 |
| 20120280678 | STATOR AND RESOLVER - Coils are formed into a coil group for a single phase by serially connecting a plurality of coils so that the resulting magnetic flux distribution is a sine wave distribution. The coil group for a single phase is constituted by a plurality of coil sets, formed from two coils that are wound around two adjacent magnetic pole teeth, connected in series. Each coil set includes coils of the two magnetic pole teeth constituting that coil set wound in opposite directions to each other looking from the inside of the stator. An electrical wire extending from an end winding of each coil is turned back so as to run in a direction opposite to an electrical wire connection to a start winding of that coil, and is connected to either a start winding of the next coil or a connection terminal. | 11-08-2012 |
| 20120280679 | Shaft Angle Measurement - A magnetic angle sensor system for determining a shaft angle for one or more pivoting or rotating shaft means. The or each of said shaft means is provided with means adapted to generate a magnetic field, such that means can be energised in turn to induce a magnetic field in a detector. In a first step the sensor arrangement measures the background field in the absence of any current in the wire or solenoid, such that the angle of the shaft means can be determined from the magnetic field in the solenoid and the background field. The invention concerns the use of an evoked response field whether alternating or steady whereby the angle is determined by the difference in field when the evoking magnetic stimulus is present from when it is absent. | 11-08-2012 |
| 20130049741 | ROTATION SENSOR AND ROTATIONAL ANGLE DETECTION APPARATUS - A resolver includes three resolver coils, which are arranged spaced apart in a circumferential direction of a rotor, and an excitation coil that generates a magnetic field to induce voltages in the resolver coils when receiving electric power. When the magnetic fields provided from the excitation coil to the three resolver coils are changed through rotation of the rotor, the voltages induced in the resolver coils are changed. This causes each of the three resolver coils to output three-phase signals having amplitude that changes in a sinusoidal manner with respect to the rotational angle of the rotor. The angular intervals between the corresponding adjacent pairs of the first to third resolver coils in the circumferential direction of the rotor are defined as first, second, and third division angles. Specifically, the first to third division angles are set to values different from one another. | 02-28-2013 |
| 20130049742 | VARIABLE RELUCTANCE RESOLVER - In a variable reluctance resolver having terminal pins at an insulator, a technique for preventing deformation of the terminal pins, shorting between the terminal pins, and contact failure at portions of the terminal pins is provided. A first insulator | 02-28-2013 |
| 20130119978 | INDUCTIVE SENSOR DEVICE AND INDUCTIVE PROXIMITY SENSOR WITH AN INDUCTIVE SENSOR DEVICE - An inductive sensor device for detecting a magnetic field change caused by an object approaching in the region of an influencing side of the inductive sensor device includes at least one coil system having a transmitting coil fed with alternating current and first and second receiving coils. The two receiving coils are connected in series in opposite senses, the first receiving coil is disposed in front of the transmitting coil and the second receiving coil is disposed behind the transmitting coil, relative to the influencing side. A screen is provided behind the second receiving coil relative to the influencing side. An inductive proximity sensor with an inductive sensor device is also provided. | 05-16-2013 |
| 20130141084 | ELECTROMAGNETIC INPUT DEVICE AND ELECTROMAGNETIC INPUT PANEL - An electromagnetic input device includes a handheld magnetized stylus, an electromagnetic input panel including an induction layer, a controller, and a storage device. The induction layer includes a plurality of closed-loop inductor coils which output an induced current when experiencing the magnetic flux of the stylus. The storage device stores a pre-determined table recording mapping relationship between location coordinates of the stylus on the electromagnetic input panel in each of the inductor coils, and intensities of the corresponding induced current generated therein. The controller determines which inductor coil generates the induced current, and the intensity of the induced current, and further determines the location of the stylus on the electromagnetic input panel based upon determined inductor coil which generates the induced current and the intensity of the induced current generated therein, and the pre-determined table. | 06-06-2013 |
| 20130162243 | VARIABLE RELUCTANCE RESOLVER - A variable reluctance resolver has a stator combined with a housing. The resolver does not require extra space in a case for a device, into which the resolver is mounted, and it is easily coaxially mounted to the device. The resolver includes a ring-like stator | 06-27-2013 |
| 20130181699 | TURBOMACHINE BLADE MONITORING SYSTEM - Embodiments of the present disclosure are directed toward a system that includes a turbomachine blade monitoring system having an eddy current proximity probe assembly. The eddy current proximity probe assembly includes an eddy current proximity probe having a probe tip and a probe tip shroud disposed about the probe tip, wherein the probe tip shroud comprises a non-metallic material. The eddy current proximity probe is configured to provide a signal indicative of a presence of a turbomachine blade, wherein the eddy current proximity probe assembly is configured to be disposed within a turbomachine casing. The turbomachine blade monitoring system also includes a monitor coupled to the eddy current proximity probe assembly, wherein the monitor is configured to monitor a parameter of the turbomachine blade based on the signal. | 07-18-2013 |
| 20130193957 | RESOLVER - A brushless axial flux electromagnetic resolver comprising a stator carrying output and excitation windings and an inductive rotor having two substantially annular members arranged substantially perpendicular to the axis of rotation of the rotor, wherein each of the annular members has a lobe which is helically skewed along the rotor and wherein the lobes of the annular members are angularly offset from one another to provide a discontinuity in the helical skew between the annular members. | 08-01-2013 |
| 20130200884 | POSITION SENSOR - A position sensor includes: a stator including an excitation coil and a detection coil each formed in planar shape; and a mover placed to face the stator and provided with a plurality of regions having different magnetic permeability and being arranged periodically in a moving direction of the mover. The excitation coil includes a first excitation coil pattern and a second excitation coil pattern formed adjacent to the first excitation coil pattern. The detection coil includes a detection coil pattern placed between the first excitation coil pattern and the second excitation coil pattern in the moving direction of the mover. The second excitation coil pattern is wound to flow an excitation current in an opposite direction to the first excitation coil pattern. | 08-08-2013 |
| 20130207647 | METHOD AND DEVICE FOR THE SENSOR-FREE POSITION DETERMINATION OF AN ELECTRONICALLY COMMUTATED ELECTRIC MACHINE - The invention relates to a method for determining a rotor position of a rotatory, multi-phase, electronically commutated electric machine ( | 08-15-2013 |
| 20130249537 | Solenoid valve having a condition monitoring unit, and a method of condition monitoring a solenoid valve - A solenoid valve having a condition monitoring unit, and a method of condition monitoring this solenoid valve are specified. A core of the solenoid valve can be shifted with respect to a holding coil 4 and a measuring coil. A reading voltage is applied to the measuring coil, and the current intensity of a current flowing through the measuring coil is determined at a first and a second time. The first measuring is performed during a switching-on or switching-off operation of the current flowing through the measuring coil. The second measuring is performed when the current intensity of the current flowing through the measuring coil 6 has reached a stationary condition. | 09-26-2013 |
| 20140002064 | RESOLVER AND MULTIPLE-ROTATION DETECTOR | 01-02-2014 |
| 20140091786 | METHOD OF MANUFACTURING AN INDUCTIVE PROXIMITY SWITCH - The invention relates to a method of manufacturing an inductive proximity switch, in which an enclosure is formed from a single piece of a non-ferromagnetic metal and electronic components are inserted into the enclosure, and to a corresponding proximity switch. The electronic components comprise a coil configured to be supplied with transmitting current pulses and a processing circuit configured to generate an output signal based on received voltages induced in the coil after the duration of the transmitting current pulses. | 04-03-2014 |
| 20140117979 | PROXIMITY SENSOR - The present disclosure relates to a proximity sensor having a coil ( | 05-01-2014 |
| 20140125326 | RESOLVER - A resolver can have a stator and a housing fixed without requiring a special jig. The resolver includes a housing in an approximately cylindrical shape, a stator core in an approximately annular shape fixed to the inside of the housing, in which an exciting coil and a detecting coil are wound therearound, and a rotor arranged on the inside of the stator core, wherein the stator core is fixed to the housing by a C-shaped ring, a groove extending in a circumferential direction is provided on the inside of the housing, and the stator core is fixed to the housing by engaging the C-shaped ring with the groove. | 05-08-2014 |
| 20140159707 | MAGNETICALLY TRACKED SENSOR - A magnetic field sensor assembly includes a hollow cylindrical core, conductive material and at least first and second lead wires. The hollow cylindrical core is made of ferromagnetic material and has a proximal end and a distal end. The conductive material is disposed around the hollow cylindrical core and forms at least one turn of a coil that has at least one start terminal and at least one finish terminal. The first and second lead wires pass through the center of the hollow cylindrical core and the first lead wire is connected to the start terminal thereby forming a first termination and the second lead wire is connected to the finish terminal thereby forming a second termination. The first and second terminations are positioned within the hollow cylindrical core. | 06-12-2014 |
| 20140159708 | MEASUREMENT DEVICE - A measurement device is provided. The measurement device comprises a ring-shaped base and multiple sensing elements. The sensing elements are symmetrically disposed on the ring-shaped base. Each sensing element comprises a circumferential groove, an axial groove and a coil. The axial groove is connected to the circumferential groove. The coil is surrounded within the circumferential groove and extended along the axial groove. | 06-12-2014 |
| 20140184206 | DEVICE FOR DETERMINING MOTION PARAMETERS - A device for determining motion parameters includes a magnetic multipole that generates an alternating magnetic field, at least one magnetic sensor for measuring the magnetic field of the magnetic multipole, and an evaluation and control unit for evaluating the signals from the magnetic sensor. The magnetic sensor includes a magnetizable core, a drive coil, and a measuring coil. The evaluation and control unit charges the drive coil with a periodic drive signal so as to bring about a periodic magnetic reversal of the core and detects the points in time at which the magnetic reversals occur in the core. Based on the points in time at which the magnetic reversals occur, the evaluation and control unit determines a current value of the effective magnetic field of the magnetic multipole within a defined measuring range representing a range around a zero crossing of the magnetic field of the magnetic multipole. | 07-03-2014 |
| 20140191750 | SENSOR FOR LOCATING METAL OBJECTS AND ASSOCIATED COIL - A sensor for locating metal objects has coils or coil parts which form at least one transmitting coil ( | 07-10-2014 |
| 20140203800 | INDUCTIVE DETECTION TYPE ROTARY ENCODER - An inductive detection type rotary encoder comprises: a stator; and a rotor that is engaged with a rotation shaft to rotate along with the rotation shaft and faces the stator in an axial direction. The stator comprises at least two transmission windings and reception windings that are disposed from an inner peripheral side to an outer peripheral side, and the rotor comprises at least two magnetic flux coupling bodies that are respectively magnetic flux coupled with these at least two transmission windings and reception windings to configure angle detection tracks. Furthermore, inner peripheral side reception windings and outer peripheral side reception windings are connected in series, and are led out by lead-out wirings commonly used in the inner peripheral side reception windings and the outer peripheral side reception windings. | 07-24-2014 |
| 20140266165 | TOOTH SENSING - A rotational position sensing device includes at least one sensor positioned adjacent a rotating component configured to rotate about an axis of rotation. At least one magnet is positioned at the rotating component such that a magnetic field of the at least one magnet affects the sensor and magnetizes a portion of the rotating component. The at least one sensor is configured to produce an output signal indicative of a magnetic flux, and therefore a position, of the rotating component. A method of sensing a position of a rotating component includes magnetizing a portion of a rotating component with a magnet and measuring a magnetic flux of the rotating component as it rotates about an axis of rotation. An output signal is generated that is indicative of the position of the rotating component. | 09-18-2014 |
| 20140327432 | MICRO INDUCTIVE SENSOR - An inductive sensor includes a sensor package and a coupler package. The sensor package includes a signal processor, an integrated capacitor, a ferrite layer, a transmitter coil, a two part receiving coil, and a plurality of discrete components. The coupler package includes an integrated capacitor, a ferrite layer, and a coupler coil. The transmitter coil in the sensor package is energized by an external power source which in turn energizes the coupler coil in the coupler package. The sensor then measures the rotational position of the coupler package relative to the sensor package by detecting and measuring, with the two part receiving coil, the signal returned by the coupler coil. The signal processor calculates the position of the coupler package relative to the sensor package by comparing the coupling factors between the coupler package and the sensor package. | 11-06-2014 |
| 20140340079 | FLANGE AND RESOLVER ASSEMBLY - A resolver has a structure in which the resolver is attached to a flange by press-fitting and in which strong stress that affects an angle detecting accuracy of a stator of the resolver is not applied. The flange, in which a resolver is press-fitted, includes a cylindrical portion in which a stator of the resolver is press-fitted to the inside thereof, and a tabular portion which is larger than an outer diameter of a cylindrical portion viewed from an axial direction and which is integrated with the cylindrical portion, wherein a clearance portion having an expanded inner diameter which does not contact with an outer periphery of the stator of the resolver is provided on an overlapped portion of a cylindrical portion viewed from a vertical direction to the axis and the tabular portion. | 11-20-2014 |
| 20140340080 | WIRELESS PROXIMITY SWITCH WITH A TARGET DEVICE COMPRISING AN INVERTER - A target device for use with a switch device of a proximity switch has a wireless receiver means ( | 11-20-2014 |
| 20140354269 | METHOD AND APPARATUS FOR DETERMINING THE CONDITION OF A CONTROL ELEMENT - A circuit ( | 12-04-2014 |
| 20150028861 | SLOTLESS RESOLVER, METHOD FOR MANUFACTURING SAME, AND WIRING TOOL USED THEREFOR - The present invention relates to a resolver having a stator for detecting the rotational position of a rotor rotating at the inner center thereof. The stator includes: a stator core having a cylindrical shape; a plurality of excitation windings attached to the inner surface of the stator core at a predetermined distance in the circumferential direction, each of the plurality of excitation windings being tightly wound; a plurality of sine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, each of the plurality of sine output windings being loosely wound; and a plurality of cosine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, the sine output windings and the cosine output windings being alternately attached such that the sine output windings and the cosine output windings have the same winding distribution. | 01-29-2015 |
| 20150054497 | System and Method for Measuring Rotation Speed and Direction of Tappets (Lifters) of an Engine Valve Train - A method of measuring direction of rotation of a tappet of an engine valve train. Two opposing notches are machined or otherwise formed in the outer surface of the tappet. Two sensors proximate the outer surface of the tappet are operable to detect the change in distance resulting from the notches as the tappet rotates. There is a predetermined difference angle of separation between the arc distance between the notches and the arc distance between the sensors. Each sensor outputs a square wave output having pulses whose width represents detection of the notches by the sensor. The location of the pulses of the two square wave outputs is compared to determine direction of rotation of the tappet. | 02-26-2015 |
| 20150061651 | STATOR OF RESOLVER AND METHOD FOR MANUFACTURING STATOR ASSEMBLY - A stator of a resolver includes a stator body including multiple magnetic pole portions; multiple stator windings respectively wound around the magnetic pole portions; multiple terminal pins each including a stator winding connecting portion around which the corresponding stator winding is wound; and an external cable connecting portion to be connected with an external cable; and a terminal pin holding portion that holds the terminal pins. The stator winding connecting portion of each terminal pin is formed in a double layer by folding a metal piece and has a fold formed when the metal piece is folded. The fold of the stator winding connecting portion of each terminal pin is formed along a longitudinal direction of the stator winding connecting portion. | 03-05-2015 |
| 20150292911 | STATE SENSOR SYSTEMS AND METHODS - Sensor systems comprising a magnetic circuit comprising a coil, a magnet, at least one of a ferromagnetic armature plate and a conductive armature plate, wherein the at least one of the ferromagnetic armature plate and the conductive armature plate is configured to move axially in response to at least one of the magnet and the coil, and a controller configured to apply a known first voltage across the coil and monitor a current through the coil are provided. Methods are also provided. | 10-15-2015 |
| 20150338243 | RESOLVER - A resolver has a lead wire that can be slack even in a structure in which it is impossible to maintain the distance between an end of wound wire and a terminal pin without using a special jig. A lead wire of a stator coil | 11-26-2015 |
| 20150354986 | METHOD AND ARRANGEMENT FOR SYNCHRONIZING A SEGMENT COUNTER WITH A FINE POSITION SENSOR - A method and an arrangement for performing the method for the error-free conversion of the counting values of a segment counter including Wiegand sensors and the position values of a fine position sensor into a total position value using the last magnetization direction of the Wiegand wire of a segment counter as part of the information for an absolute synchronization of counting and position values. | 12-10-2015 |
| 20150354995 | RESOLVER - A resolver can have a stator installed in a housing simply, without requiring a special jig. In the resolver including a housing and a stator core fixed in the housing, the stator core is fixed to the inside of the housing by rotating relative to the housing. | 12-10-2015 |
| 20150355359 | FOREIGN OBJECT DETECTION DEVICE, FOREIGN OBJECT DETECTION METHOD, AND NON-CONTACT CHARGING SYSTEM - Disclosed herein is a foreign object detector to detect a foreign object while distinguishing metal from water. The foreign object detector includes a detection coil; a transmitting circuit generating RF power of a predetermined frequency; a directional coupler outputting the RF power supplied from the transmitting circuit to the detection coil, and extracting reflected power that is a power component reflected by the detection coil; and a detection circuit receiving the reflected power extracted by the directional coupler, and detecting the foreign object by sensing a change in the frequency characteristic of the reflected power. | 12-10-2015 |
| 20150362336 | ABSOLUTE POSITION ENCODER SCALE HAVING PLATES ALTERNATING WITH VARYING RECESSES - An absolute position encoder scale is provided having scale elements (e.g., plates and plate abatement features such as recesses) which alternate along the scale pattern. At least one of the scale elements has a characteristic (e.g., a recess depth) that is varied along the scale pattern to provide a different respective eddy current response. A signal portion of a read head is responsive to the respective eddy currents to output absolute position signals. For the plate abatement features, the characteristic that may be varied may be a recess depth, an amount of a non-conductive area, an amount of a recessed area, etc. As a varying depth example, the scale may be formed from a bulk material (e.g., aluminum) in which progressively deeper recessed depths are cut along the scale. For plate features, the characteristic that may be varied may include a plate height, an amount of a plate area, etc. | 12-17-2015 |
| 20160003643 | SENSOR FOR DETECTING A POSITION OF A TRANSDUCER MAGNET - A sensor for detecting a position of a transducer magnet in a movement direction, including: -a coil carrier extending in the movement direction, -a first coil extending in the movement direction that is wound onto the coil carrier and -a second and a third coil oriented according to the first coil, which are wound onto the coil carrier such that the second and third coils accordingly form a first and second transformer with the first coil, the transformation ratio of which is dependent on the position of the transducer magnet, -wherein at least the second coil or the third coil is arranged between the coil carrier and the first coil. | 01-07-2016 |
| 20160006323 | ASSEMBLY COMPRISING AT LEAST A FIRST MOTOR, A SECOND MOTOR AND AN ANGULAR POSITION SENSOR - An assembly includes at least a first motor ( | 01-07-2016 |
| 20160061982 | METHOD AND SYSTEM FOR DETECTING CHARGER - A method and system for detecting a charger are provided. The method includes receiving, by a controller, charger information from at least one charger present within a network area of a vehicle. A sensed current is then transmitted from a receiving pad of the vehicle to the charger or a charger side transmitting pad based on the charger information. Further, the method may include detecting the charger and the transmitting pad having priority based on a voltage and a current induced by the sensed current. | 03-03-2016 |
| 20160069711 | Sensor Device, Steering Angle Sensor Device, and Method for Determining the Position of a Metal Object - A sensor device for determining the position of a metal body comprising at least one Eddy current sensor, which has a coil for generating a high-frequency electromagnetic alternating field and a device for operating the coil and for detecting an impedance of the coil, and comprising an analyzing device, which determines the position of the metal body relative to the coil using the detected impedance. A reference Eddy current sensor is provided which has a reference coil for generating a high-frequency electromagnetic alternating field and a reference device for operating the reference coil and for detecting an impedance of the reference coil and which is oriented/designed such that the electromagnetic alternating field of the reference Eddy current sensor is free of metal bodies, wherein the analyzing device is designed to form a beat from the detected impedance and to determine the position of the metal body dependent on the beat. | 03-10-2016 |
