Abstract: An electronic position encoder includes a scale and detector. The detector includes a field generating coil (FGC) having elongated portion configurations (EPCs) bounding a generated field area (GFA) aligned with sensing elements in a sensing area, to provide position signals responsive to the scale interacting with the generated field. Sensing elements and EPCs are fabricated in “front” layers of the detector portion. The EPCs include end gradient arrangements (EGAs) configured to reduce field strength in the generated field area as a function of position along the x-axis direction for positions approaching the end of the GFA. A shielded transverse conductor portion (TCP) fabricated in a “rear” layer connects the EPCs and/or EGAs of the FGC via feedthroughs. A conductive shield region (CSR) configuration in a CSR layer between the front and rear layers intercepts at least a majority of a projection of the TCP toward the front layers.

Abstract: A scanning unit for determining a relative angular position of an angular scale that is rotatable about an axis relative to the scanning unit includes a circuit board having a first surface and a second surface and evaluation electronics. A detector assembly is disposed in a manner that enables scanning of the angular scale located opposite the first surface of the circuit board. A housing body includes: slots extending circumferentially about the axis; lands in each case extending axially between two of the slots such that the housing body is axially flexible but torsionally and radially rigid; and a bottom disposed axially between the slots and the circuit board.

Abstract: An antenna has a rotating magnetic dipole and a rotating electric dipole having parallel axes of rotation, but orthogonal magnetic and electric vectors. The rotational frequency defines the RF carrier to create the electric and magnetic fields necessary to generate the Poynting vector in the immediate vicinity of the antenna. Because there is no energy required to maintain the fields of a permanent magnet or electret, the only power input is that overcoming mechanical friction, and eddy current and hysteretic losses in adjacent conducting structures.

Abstract: A system including a non-circular coupler, a sensor, a memory module, and a processor module is provided. The sensor includes a transmitter coil adapted to be energized by a high frequency current source and at least two receiving coils. One of the receiver coils generate a sine-like function output signal and the other generates a cosine-like function output signal upon rotation of the coupler. The memory module is operable to compensate for non-sinusoidal output signals caused by a plurality of geometric errors and a gap between the coupler and the at least two receiving coils. The processor module configured to process the non-sinusoidal output signals from both the first and second receiver coils, determine an error in the non-sinusoidal output signals from both the first and second receiver coils, mathematically compensate the assembly to eliminate the error and generates an output signal representative of the rotational position of the coupler.

Abstract: A guidance system utilizes ultrasound imaging or other suitable imaging technology. In one embodiment, the guidance system includes an imaging device including a probe for producing an image of an internal body portion target, such as a vessel. One or more sensors may be associated with the probe. The system may include a medical device, such as a needle, separate from the probe, the medical device having a magnetic field associated therewith. The system may include a processor that uses data relating to the magnetic field sensed by the one or more sensors to determine a position and/or orientation of the medical device. The system may also include a display that shows an image of the internal body portion target taken by the ultrasound imaging probe and a depiction of the medical device positioned and/or oriented with respect to the image.

Abstract: In accordance with one embodiment of the present disclosure, an inductive sensor assembly is provided. The inductive sensor assembly includes a sensor assembly and a shaft. The sensor assembly include a transmitter coil and a two-part receiver coil. The shaft includes a first end. The first end includes a first planar surface and a second planar surface. The second planer surface extends from the first planar surface. A target is formed from the first planar surface and the second planar surface. When the target is moved about a shaft axis, the first planar and second planar surfaces modify an inductive coupling between the transmitter coil and the two-part receiver coil.

Abstract: Devices, systems and methods for performing image guided interventional and surgical procedures, including various procedures to treat sinusitis and other disorders of the paranasal sinuses, ears, nose or throat.

Abstract: An electronic position encoder includes a scale and a detector. The detector includes a field generating coil (FGC) having elongated portions bounding a generated field area, and a sensing area, both aligned along the scale. Sensing elements in the sensing area provide position signals responsive to the scale interacting with the generated field. Sensing elements and elongated portions are fabricated in “front” layers of the detector portion. A crosswise shielded end section (SES) fabricated in a “rear” layer connects the elongated portions via feedthroughs. The sensing element area is longer than the elongated portions of the FGC. A projection of the SES normal to the layers overlaps sensing elements in the sensing element area. A conductive shield region CSR is configured in a CSR layer interposed between the front and rear layers to intercept at least a majority of the projection of the SES toward the overlapped sensing elements.

Abstract: In accordance with one embodiment of the present disclosure, an inductive sensor assembly includes a shaft and a multilayered printed circuit board (PCB). The shaft includes a first end. The first end has a bottom surface. A target including a flat forming a straight edge is integrally formed into the first end of the shaft. The PCB includes a transmitter coil and a two part receiving coil. The two part receiving coil has a first receiving coil and a second receiving coil. The first receiving coil is on a different layer of the PCB than the second receiving coil in an axial direction. The target is rotated about a central axis of the two part receiving coil. The straight edge of the target and the bottom surface is detected by the two part receiving coil.

Abstract: An automated manufacturing system that includes a self-contained through-skin sensor for determining the location of an underlying aperture in a support structure suited to mount a skin or surface. In an embodiment, the sensor includes a sensor disposed in a housing and configured to determine a location of an aperture disposed in an adjacent surface through electromagnetic, x-ray, ultrasonic or other means. The sensor further includes an alignment assembly having an alignment orifice disposed in the housing and configured to be maneuvered in an x-y plane within the housing. The sensor also includes a vacuum pump system, a local battery and a processor coupled to the sensor and configured to control first and second actuators to maneuver the alignment orifice within the x-y plane to be co-axially located with the aperture in response to the sensor signal.

Abstract: Method for determining the orientation of the trajectory followed by a pedestrian, associated with a trajectory frame, with respect to a reference frame is provided. At least one motion sensor associated with the pedestrian generates data representative of the motion of the sensor housing on the basis of said sensor assembly in the reference frame. A first rotation transformation operator representative of the orientation of the reference frame with respect to the trajectory frame is calculated. The data representative of the motion after transformation by said first operator exhibits at least one characteristic of a set of characteristics which are representative of signals of walking or running motion of a pedestrian and are expressed in the pedestrian frame.

Abstract: A foot touch position following apparatus includes a foot touch position detection part configured to detect a position where a human foot touches a surface; and a moving part configured to move the foot touch position following apparatus based on the detected result of the foot touch position detection part.

Abstract: An electromagnetic induction type encoder includes a detection head and a scale. The detection head has a transmitter coil configured to generate magnetic flux. The scale has connection coils that are arrayed in a measurement axis direction, are configured to be electromagnetically coupled with magnetic flux generated by the transmitter coil and generate magnetic flux that fluctuates in a predetermined spatial period in the measurement axis direction. The detection head has a receiver coil having a plurality of coils that are arrayed in the measurement axis direction on a predetermined face of the detection head, are configured to be electromagnetically coupled with the magnetic flux generated by the connection coils and detect a phase of the magnetic flux. A current direction of one of the plurality of coils is opposite to a current direction of another coil of the plurality of coils next to each other.

Abstract: A sensor circuit includes a first magnetoresistor. The first magnetoresistor has a first resistance transfer function. Furthermore, the sensor circuit includes a second magnetoresistor. The second magnetoresistor has a second resistance transfer function. The second resistance transfer function is different from the first resistance transfer function. The first magnetoresistor and the second magnetoresistor are connected in series between a first supply terminal of the sensor circuit and a second supply terminal of the sensor circuit.

Abstract: A measurement method for measuring the position of a movable body that is movable relative to a fixed body, the measurement method making use of a measurement device comprising a fixed portion for securing to the fixed body and a movable portion for securing to the movable body, the fixed portion including a first printed circuit (7; 20) having formed thereon first tracks (9) defining at least one emission pattern (10; 24) and also a plurality of measurement patterns (11; 25), the movable portion including a second printed circuit (8; 21) having formed thereon second tracks (14) defining at least one reception pattern (15; 27) and also at least one target pattern (16; 28), the first and second printed circuits being coupled together electromagnetically in such a manner that, when the emission pattern is excited by an excitation signal, an induced signal is received by the reception pattern and is then re-emitted by the target pattern, the measurement patterns then picking up measurement signals that are repre

Abstract: An absorbing device (24, 24?, 24?, 41) for radiotherapy treatment comprising at least one layer of electromagnetic absorbing material wherein the absorbing material is for preventing interaction between a target localisation system (1) having a targeted frequency range of between about 300 kHz and 500 kHz and a treatment table (4).

Abstract: A rotary sensor includes a stator element and a rotor element that is rotatably mounted in respect of the stator element about an axis of rotation. A rotary angle can be captured by inductive coupling between the rotor element and the stator element. The rotary sensor further includes a measuring device configured to capture the rotary angle depending on the inductive coupling between the rotor element and the stator element. The stator element has at least one transmission coil for emitting alternating electromagnetic fields and at least two reception coils for capturing alternating electromagnetic fields, when the measuring device is configured to excite the at least one transmission coil with at least two mutually different frequencies for emitting at least two alternating electromagnetic fields.

Abstract: An inductive sensor device (23) having a scale unit (24) and a sensor unit (25) that can be moved relative to each other in a measuring direction (M) is described. The scale unit contains scale elements (26) that are adapted to create a field pattern (P(x)) in measuring direction (M) that is detected by means of a receive circuit (35) of the sensor unit (25). The receive circuit (35) contains at least a first receive coil set (36) and a second receive coil set (37) that are offset in measuring direction (M). In so doing a first spatial phase and a second spatial phase receive signal is provided by these receive coil sets (36, 37) respectively. These spatial phases can be used for absolute position determination.

Abstract: A rotation angle sensor includes a stator element and a rotor element, which is mounted in a rotatable manner about an axis of rotation with respect to the stator element. A rotation angle is captured via inductive coupling between the rotor element and the stator element. A compensation element is arranged on the stator element. The compensation element has a compensation transmitting coil configured to emit an alternating electromagnetic compensation field and at least one compensation receiving coil configured to receive alternating electromagnetic fields. The rotor element has a first electrically conductive section. The first electrically conductive section is arranged on the rotor element and is inductively coupled to the compensation transmitting coil and to the at least one compensation receiving coil of the compensation element.

Abstract: There is provided an electromagnetic inductive encoder that allows reduction in the number of tracks on a scale for reduction in the size of the scale. The electromagnetic inductive encoder includes a scale having a scale pattern, a head, and computation unit. The head includes transmission unit, which includes transmission coils, and reception unit, which includes reception coils. The scale pattern has a first pattern, which causes the reception coils to receive positive current, and a second pattern, which causes the reception coils to receive negative current.

Abstract: A device for position sensing comprises sensing means arranged for producing at least two sensor signals, and a signal construction unit. The signal construction unit comprises selection means for selecting in a serial way one of at least two time-synchronous signals, sampling means for sampling a selected time-synchronous signal at given sampling instants, storage means for storing sampled data representing the selected time-synchronous signal and timing information indicating which of the given sampling instants were used to obtain the sampled data, and processing means for determining at one of the given sampling instants a value for at least one of said time-synchronous signals that was not sampled at the one given sampling instant by performing an interpolation using data values of the at least one time synchronous signal stored in the storage means and obtained at another point in time than the one given sampling instant.

Abstract: An electronic device utilizing a nine-axis motion sensor module, capable of accurately outputting a resultant deviation including deviation angles in a 3D reference frame is provided. The present invention provides a novel comparison and compensation to accurately obtain a resultant deviation including deviation angles of the electronic device under the presence of external and/or internal interferences including the ones caused by undesirable electromagnetic fields and the ones associated with undesirable external forces and axial accelerations.

Abstract: A rotational angle sensor includes a stator element and rotor element. The stator element has a stator transmitting coil, circuit board, and at least two identically configured stator receiving coils angularly offset from each other on the circuit board. The rotor element is mounted rotatably about a rotation axis relative to the stator element, and has a rotor receiving coil and rotor transmitting coil electrically connected to each other. The rotor receiving coil is inductively coupled to the stator transmitting coil such that an electromagnetic field produced by the stator transmitting coil induces a current in the rotor receiving coil that flows through the rotor transmitting coil and causes the rotor transmitting coil produces a further electromagnetic field.

Abstract: Disclosed is a sensor enabled object. Beacons may be placed at fixed locations within an environment. The movement of the sensor enabled object can be tracked throughout the environment by analyzing received signals. The relative distances from the known positions of the beacons can be used in order to orient the sensor enabled object within the environment. Alternatively, the sensor enabled objects can be used to determine the relative positions of mobile objects by measuring the respective distances from each other and correlating the relationships.

Abstract: Systems and methods for sensing angular displacement between body segments of users include disposing an electromagnetic transmitting sensor about a first body segment and an electromagnetic receiving sensor about a second body segment. Data related to the magnetic field coupling between the transmitting and receiving sensors can be captured for determining the angular displacement between the first and second body segments.

Abstract: An electromagnetic induction type encoder, wherein a detection head has a drive coil generating magnetic flux, wherein a scale has a plurality of connection coils arrayed in a fundamental period ? in a measurement axis direction, are electromagnetically coupled with the magnetic flux generated by the drive coil and generates magnetic flux fluctuating in a predetermined spatial period in the measurement axis direction, wherein the detection head has a plurality of receiver coils arrayed in the fundamental period ? in the measurement axis direction and are electromagnetically coupled with the magnetic flux generated by the plurality of connection coils and detects a phase of the magnetic flux, wherein ?/2?2d<L<?/2 is satisfied when a distance between line width centers of the plurality of connection coils is “L” and a line width of the plurality of connection coils is “d”.

Abstract: A pitch compensated inductive position encoder includes a scale comprising first and second tracks including periodic patterns having a wavelength W, a detector, and signal processing. The second track pattern may be shifted along the measuring direction by a pattern offset STO relative to the first track pattern. In the detector, first-track and second-track field generating coil portions generate fields in first and second interior areas aligned with the first and second pattern tracks, respectively. First and second sensing coil configurations that are aligned with the first and second tracks, respectively, are offset relative to one another by STO+/?0.5*W along the measuring direction. In various embodiments, the first and second sensing coil configurations may have the same sequence of individual coil polarities if the generated field polarities are different, and may have inverted or opposite sequences if the generated field polarities are the same.

Abstract: Disclosed is a localizer system. The localizer system may be incorporated into a navigation system for tracking a tracking device. Generally, the localizer may include a transmitting coil array and a field shaping assembly.

Abstract: A linear transmission device includes: an elongated shaft member, a moving module, a rolling unit, a return assembly, a sensor and a data receiving unit. The linear transmission device has a simple structure. The sensor is disposed at the junction of the first return pipe and the second return pipe of the return assembly to timely detect the change in the distance between the rolling elements, which can determine whether there is an abnormality in the shape of the spacers. With the sensor outputting detecting signals, it can stop the terminal immediately to confirm the condition of the workpieces and the machine, avoiding the structural damage of the machine and the workpiece caused by the continuous operation. The sensor can also serve as a medium for transferring data, further facilitating maintenance.

Abstract: A planar linear inductive position sensor is formed on a substrate and includes at least one oscillating coil, a first sensing coil having opposing edges extending beyond opposing edges of the oscillating coil along a linear axis along which a linear position of a conductive target is to be sensed, and a second sensing coil having opposing edges extending beyond opposing edges of the oscillating coil along the linear axis.

Abstract: An electromagnetic transducer includes a magnetic assembly and a coil assembly. The magnetic assembly may include an inner magnet subassembly and an outer magnet subassembly. The inner magnet subassembly and the outer magnet subassembly each have a plurality of axial magnets arranged in a stacked configuration with a spacer disposed between vertically adjacent axial magnets. The coil assembly includes an inner coil subassembly and an outer coil subassembly. The inner coil subassembly is disposed between the inner magnet subassembly and the outer magnet subassembly, and the outer coil subassembly is disposed around the outer magnet subassembly. The coil assembly and the magnetic assembly are configured to move relative to each other.

Abstract: Provided is an electromagnetic induction type displacement detection apparatus in which influence of a change in magnetic flux received by a receiving device can be suppressed. An electromagnetic induction type displacement detection apparatus 1 includes a scale including a scale coil and a head 3 relatively moving with respect to the scale. The head 3 includes a transmitting device 4 that generates magnetic flux in the scale coil, and a receiving device 5 that includes a first receiving unit 51 and a second receiving unit 52 each receiving the change in the magnetic flux and in which the first receiving unit 51 and the second receiving unit 52 are arranged to be shifted from each other along a measurement direction.

Abstract: A parking meter receives data indicative of a remote payment being completed and displays an amount of time purchased by the remote payment for a parking session. The parking meter determines an amount of time remaining in the parking session and powers down at least a portion of a meter communication subsystem subsequent to receiving the data indicative of the remote payment being completed. The parking meter wakes up the powered down portion of the communication subsystem upon determining that the amount of time remaining is below a threshold time, and can receive an indication of additional time being paid for remotely, and can update the displayed time remaining to reflect the additional time.

Abstract: A soft magnetic resin composition contains flat soft magnetic particles, and a resin component containing an epoxy resin, a phenol resin, and an acrylic resin. The epoxy resin consists of only an epoxy resin having three or more functional groups, the phenol resin consists of only a phenol resin having three or more functional groups, and the content ratio of the acrylic resin in the resin component is 25 mass % or more.

Abstract: A data creation unit of an X-ray diagnosis apparatus that irradiates a treatment target part of a subject with an X-ray and displays the image data of a transmitted X-ray thereon includes a catheter tip detection unit that detects a catheter tip based on the image data, a tip position information storage unit that stores therein position information of the catheter tip for at least one heartbeat based on a detection result of the catheter tip detection unit as transfer trace information, and a support data creation unit that superimposes the transfer trace information onto the present image data to create support data for catheter treatment.

Abstract: An electronic position encoder includes a scale comprising first and second pattern tracks including respective signal modulating scale patterns, a detector and a signal processing configuration. The detector includes first-track and second-track field generating coil portions that surround first and second interior areas aligned with the first pattern track and second pattern track, respectively. The first-track and second-track field generating coil portions each include first and second elongated portions extending along the measuring axis direction, connected to end portions extending along a y-axis direction transverse to the measuring axis. The detector includes sensing elements that span across the first and second interior areas along the y-axis direction. A nominal y-axis trace width dimension of the elongated portions is at least 0.1 times a y-axis width of the first and/or second interior areas. In various implementations, a shielded end section may be used to connect the elongated portions.

Abstract: The present invention provides an improved light system for labor detection by monitoring the status of a cervix, including dilation, during pregnancy and for monitoring vaginal pH at the cervix to detect the leakage of amniotic fluid, including a MEMS receiver programmed to receive and process MEMS cervical data into cervical status data for transmission to a remote network monitor a first cervical MEMS device positioned at a first cervix location and a second cervical MEMS device positioned at a second cervix location providing MEMS cervical data for transmission to the short range wireless receiver for detecting labor.

Abstract: A transmission winding portion having a positive-polarity loop and a negative-polarity loop alternately formed so as to partially overlap with each other in the extending direction of a scale, arrangement of the positive-polarity loop and the negative-polarity loop being adjusted such that the positive-polarity loop and the negative-polarity loop on both sides with respect to the intermediate position in the longitudinal direction of the transmission winding portion are inverted; a first reception winding that covers the transmission winding portion in the width direction of the scale, that has a length, corresponding to the cycle of the cycle pattern of the transmission winding portion, and that is formed into a rectangular pattern; a second reception winding having a shape symmetrical to the first reception winding with respect to the intermediate position in the longitudinal direction of the transmission winding portion.

Abstract: An implantable pulse generator (IPG) for an implantable medical device is disclosed herein. The IPG is capable of sensing the presence of an external magnetic field, such as a magnetic field associated with magnetic resonance imaging (MRI). The IPG includes a circuit that contains a magnetic core inductor and that is configured to boost a first voltage to a second voltage and use the second voltage to drive a current through a load. In a strong magnetic field, the magnetic core of the inductor becomes magnetically saturated, causing the inductance of the inductor to sharply drop. The inductance drop can be detected, for example, by detecting an increase in the second voltage. The circuit may be a boost converter circuit used to provide a compliance voltage for operation of the IPG.

Abstract: An electronic position encoder includes a scale comprising a pattern track having a track width dimension along a y-axis direction that is perpendicular to an x-axis measuring axis direction, a detector, and a signal processing configuration. The detector includes a field generating coil configuration fixed on a multi-layer printed circuit board (PCB), including a field generating coil portion that surrounds an interior area aligned with the pattern track and includes first and second elongated portions having a trace width along the y-axis direction, which is at least 0.1 times a y-axis width of the interior area. The detector includes conductive receiver loops arranged along the x-axis direction and fixed on the PCB.

Abstract: A pointer detection device for processing an input signal varying according to a touch of a pointer includes: a mixer configured to generate a first output signal by heterodyning the input signal according to a frequency of a local oscillator; and a filter configured to output a second output signal by filtering the first output signal, wherein the mixer is configured to shift a frequency band corresponding to the pointer to a pass band of the filter.

Abstract: In some embodiments, optimizing a coil design is provided. In particular, a method of providing an optimized position locating sensor coil design includes receiving a coil design, the coil design including geometric positions of a transmit coil and geometric positions of receive coils; linearizing one or more of the receive coils; and offset compensating the one or more of the receive coils. The linearization determines a geometric correction array for adjusting the geometric position of one of the receive coils. The offset correction includes determining a geometric shift to shift the geometric position of the one of the receive coils.

Abstract: The electromagnetic induction type position detector includes a scale having a plurality of gradation coils, a head having a transmission unit and a reception unit, and a control unit. Each of the plurality of graduation coils includes a transmission graduation arranged with a pitch L1, a reception graduation arranged with a pitch L0 different from the pitch L1, and a connection unit. The transmission unit includes three transmission coil groups that are constituted by pluralities of transmission coils, each being arranged with a pitch L1, and that are arranged such that adjacent transmission coil groups have a phase difference. The reception unit includes three reception coil groups that are constituted by pluralities of reception coils, each being arranged with a pitch L0, and that are arranged such that adjacent reception coil groups have a phase difference identical to the phase difference of the three transmission coil groups.

Abstract: An actuator in a HVAC system includes an inductive sensor, a conductive target, and a controller. The conductive target has multiple different portions that become aligned with the inductive sensor as a position of the actuator changes. Each of the multiple different portions have a different inductance. The controller receives a signal from the inductive sensor indicating an observed inductance of the portion of the conductive target aligned with the inductive sensor. The controller uses a stored relationship between the observed inductance and the position of the actuator to determine the position of the actuator based on the observed inductance. The controller operates the actuator to change the position of the actuator based on the determined position.

Abstract: A position signal generator for an electronic position measuring device is disclosed. In an embodiment, the position signal generator includes a signal generation device for generating a periodic magnetic signal, and an electric power supply device for supplying the signal generation device with electric energy. The position of the position signal generator is determined via the position measuring device.

Abstract: An embodiment of a position sensing system includes a signal generation circuit to generate an excitation signal according to a selected characteristic signal, a drive circuit to drive an excitation source with the excitation signal, an input circuit to receive a sensor output while driving the excitation source, a signal detection circuit to identify a component of the sensor output corresponding to the characteristic signal, and a control circuit to determine the position of the movable object as a function of the identified component of the sensor output. The positioning system may be included an electronic camera, where the movable object may be a lens. The excitation source may be a conductive coil, the excitation a magnetic field, and the sensor a magneto resistive sensor. Alternatively, the excitation source may be an optical excitation source, the excitation an optical excitation, and the sensor an optical sensor.

Abstract: An electronic position encoder is provided including a scale, a detector and a signal processing configuration. The scale extends along an x-axis direction and includes a signal modulating scale pattern. The detector includes sensing elements and a field generating coil that surrounds an interior coil area. The field generating coil includes first and second elongated portions that each extend along the x-axis direction, connected by an end portion. The elongated portions have a nominal generating trace width dimension along the y-axis direction that is at least 0.1 times the nominal interior coil area width dimension in various embodiments. In various implementations, a conductive shield region of the detector may reduce the effect of a shielded end section of the end portion of the field generating coil on the sensing elements. The shielded end section may be located on a different PCB layer than the elongated portions.

Abstract: An apparatus is described herein. The apparatus includes a power transmit unit coil and an active shielding coil. The power transmit unit coil includes a set of main windings, positioned at a first location on a structure, to carry a first current in a first direction, wherein the first current is to cause an electromagnetic field to emanate from the power transmit unit coil. The active shielding coil is positioned at a second location on the structure and is to carry a second current in a direction substantially opposite the first direction wherein the second current is to cause a reduction of the size of the electromagnetic field.

Abstract: A stator structure includes a stator section, coil cover, terminal block section, plurality of terminals and terminal-block cover section. Stator section includes stator core including first main body section and plurality of teeth sections extending on inner circumference side of first main body section and coils configured by winding wires wound around teeth sections via an insulator. Coil cover covers coils from axial direction of stator core. Terminal block section extends from insulator outward in radial direction of stator core. Plurality of terminals are provided in terminal block section, ends of winding wires configuring coils are bound to terminals. Terminal-block cover section is provided in coil cover, terminal-block cover section covers terminal block section.

Abstract: A proximity sensor is provided with coils (11, 12) disposed in a pre-set positional relationship, a first distance calculation unit (31) and a second distance calculation unit (32) for calculating first distance information (d1) and second distance information (d2), respectively, from the coils (11, 12) to a detection object (W) on the basis of reception results (voltages V1, V2) of the coils (11, 12), and a position estimating unit (33) for estimating the position, such as distance and azimuth, of the detection object (W) on the basis of the first distance information (d1), the second distance information (d2), and the positional relationship of the coils (11, 12).