Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison, then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation, then executing a series of commands at a predetermined location in the wellbore.

Abstract: A method for calibrating a magnetometer. The magnetometer travels through (Si) a set of path positions, and acquires (S2) a plurality of measurements of the magnetic field. Trajectory information (S3) is provided representative of the location and the orientation of a point integral with the magnetometer. The measurements of the magnetic field are matched up (S4) with the trajectory information. A determination (S5) is made of calibration parameters of the magnetometer by the minimisation of a cost function involving, for a plurality of determination times, at least the calibration parameters, a measurement of the magnetic field, and a relationship linking the change in a magnetic field with the change in the location and in the orientation of the magnetometer derived from the trajectory information.

Abstract: Encapsulation packages for stent-deployable monitoring devices formed of resonator sensors and allowing for magnetic biasing elements that exhibit a targeted impact on the mechanical characteristics of a stent are provided. Encapsulation packages are formed of different types and include a longitudinal shield and curved end on profile for aligning the shield within the deployable stent, the shield having perforations such that a resonator can be positioned adjacent the perforations for allowing particulate within the stent to collect and be measured by the resonator during deployment.

Abstract: An electromagnetic gradiometer that includes multiple torsionally operated MEMS-based magnetic and/or electric field sensors with control electronics configured to provide magnetic and/or electric field gradient measurements. In one example a magnetic gradiometer includes a first torsionally operated MEMS magnetic sensor having a capacitive read-out configured to provide a first measurement of a received magnetic field, a second torsionally operated MEMS magnetic sensor coupled to the first torsionally operated MEMS magnetic sensor and having the capacitive read-out configured to provide a second measurement of the received magnetic field, and control electronics coupled to the first and second torsionally operated MEMS magnetic sensors and configured to determine a magnetic field gradient of the received magnetic field based the first and second measurements from the first and second torsionally operated MEMS electromagnetic sensors.

Abstract: A method of determining an absolute angle of a magnetic field includes receiving a first digital measurement value Bx of a first magnetic field component indicating intensity of the magnetic field along a first axis; receiving a second digital measurement value Bz of a second magnetic field component indicating the intensity of the magnetic field along a second axis, orthogonal to the first axis; determining absolute values for the first and second magnetic field components; and determining the angle of the magnetic field with respect to the first or second axis. The angle is determined so that the angle is derivable from the value of arcsin of Bz or of its approximation, when the absolute value of Bz? the absolute value of Bx, and derivable from the value of arccos of Bx or of its approximation, when the absolute value of Bz> the absolute value of Bx.

Abstract: Various embodiments provide a triaxial magnetic sensor, formed on or in a substrate of semiconductor material having a surface that includes a sensing portion and at least one first and one second sensing wall, which are not coplanar to each other. The sensing portion and the first sensing wall form a first solid angle, the sensing portion and the second sensing wall form a second solid angle, and the first sensing wall and the second sensing wall form a third solid angle. A first Hall-effect magnetic sensor extends at least partially over the sensing portion, a second Hall-effect magnetic sensor extends at least partially over the first sensing wall, and a third Hall-effect magnetic sensor extends at least partially over the second sensing wall.

Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison, then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation, then executing a series of commands at a predetermined location in the wellbore.

Abstract: The present invention provides a radio frequency (RF) receive coil device for use in a magnetic resonance (MR) imaging system, comprising a RF receive coil, a plug for connecting the RF receive coil to the MR imaging system, sensing means for sensing the presence of a magnetic field of the MR imaging system, detecting means for detecting if the plug is connected to the MR imaging system, and a warning means for generating a warning when the sensing means sense the presence of a magnetic field of the MR imaging system and the detecting means detect that the plug is not connected to the MR imaging system.

Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison, then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation, then executing a series of commands at a predetermined location in the wellbore.

Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison and then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation.

Abstract: A method, system, and apparatus for determining the location of a tool traveling down a wellbore by measuring a first borehole magnetic anomaly with respect to time at two known locations on a tool, comparing the time difference between the two measurements, then calculating the velocity of the tool based on the comparison, then further calculating the distance traveled by the tool in the wellbore based on the velocity calculation, then executing a series of commands at a predetermined location in the wellbore.

Abstract: A probe for measuring an electrical field includes at least three antennas, each antenna being adapted to receive a RF signal. The at least three antennas are arranged in accordance with three axes oriented perpendicularly to each other. A detection circuit is provided for each antenna, connected to the corresponding antenna for detecting an RF signal. A processing circuit is operationally connected to an output of each detection circuit for processing the detected signals and outputting a measurement result. A measurement correction mechanism is provided for correcting the measurement result based on a frequency of said electrical field and an angular position of the probe relative to said electrical field.

Abstract: The present disclosure relates to a magnetic field sensor including a first magnetic field sensor element configured to generate a first sensor signal in response to a magnetic field; a second magnetic field sensor element configured to generate a second sensor signal in response to the magnetic field; and a compensation circuit configured to compensate the first sensor signal using the second sensor signal, wherein the compensation circuit is configured to apply a correction to the first sensor signal at least if the second sensor signal is indicative of an orientation of the magnetic field parallel or perpendicular to an orientation of the second magnetic field sensor element, and if the first sensor signal is indicative of a different orientation of the magnetic field.

Abstract: A magnetic sensor detects presence or absence of a magnetic field and its polarity. South pole and north pole magnetic fields are respectively detected by the south pole detection operation and the north pole detection operation. A signal processing circuit of the magnetic sensor performs a unit operation including at least one of the south pole detection operation and the north pole detection operation repeatedly at an interval. In this case, if the south pole is detected in the i-th unit operation, the south pole detection operation is performed first in the (i+1)th unit operation. If the south pole is detected in the south pole detection operation, the north pole detection operation is not performed in the unit operation. If the north pole is detected in the i-th unit operation, operations are performed oppositely to the above.

Abstract: A current sensing circuit is provided. The current sensing circuit includes an amplifier, an input resistor, a sensing resistor, and a feedback circuit. The amplifier has a first input terminal, a second input terminal, a third input terminal, and an output terminal. The input resistor is coupled between the first input terminal and the second input terminal of the amplifier. The sensing resistor is coupled between the second input terminal and the third input terminal of the amplifier. The feedback circuit is coupled between the first input terminal and the output terminal. When an input current flows through the sensing resistor, a voltage across the sensing resistor is equal to a voltage across the input resistor, and the feedback circuit correspondingly outputs a sensing voltage according to the input current.

Abstract: The invention relates to a three-dimensional magnetic field detection device (1) which comprises three soft-magnetic bodies (21, 22) and a magnetic field detection element (3, 12, 13, 14) comprising three GSR elements. For three axial directions that are orthogonal to each other at an origin point that is the center point of measurement, the invention measures, for a first axial direction, a first-axial-direction magnetic field using two elements sandwiching the origin point, measures, for a second axial direction, a second-axial-direction magnetic field through disposing one element at the position of the origin point, and measures, for a third axial direction, a third-axial-direction magnetic field through combining the two elements for the first axial direction and the three soft-magnetic bodies and forming two crank-shaped magnetic circuits having point symmetry.

Abstract: A magnetic field sensor for measuring an external magnetic field, including a sensor unit; and a flux conductor assembly including at least one switchable element, which is designed to deflect a flux of the external magnetic field onto the sensor unit as a function of a switching state of the at least one switchable element, the sensor unit being designed to measure the deflected flux of the external magnetic field; and an evaluation unit, which is designed to ascertain a value of the external magnetic field as a function of the deflected flux of the external magnetic field measured by the sensor unit and the switching state of the at least one switchable element.

Abstract: A magnetic sensor includes a bridge circuit including a plurality of magnetic field sensor elements, each configured to generate a sensor signal in response to the magnetic field impinging thereon, where the bridge circuit is configured to generate a differential signal based on sensor signals generated by the plurality of magnetic field sensor elements. The bridge circuit further includes a plurality of resistors, where at least one resistor of the plurality of resistors is coupled in parallel to each of the plurality of magnetic field sensor elements.

Abstract: A system includes a surface coil positioned at a known surface position, the surface coil including at least one loop of a conductor. The system also includes a coil controller coupled to the surface coil and adapted to inject a current into the surface coil such that the surface coil generates an electromagnetic field. In addition, the system includes a sensor package positioned within a wellbore adapted to detect the electromagnetic field and determine the position of the wellbore relative to the surface coil.

Abstract: A sensor assembly includes a substrate including a first portion, a second portion, and a rolled section positioned between the first portion and the second portion. The sensor assembly further includes a first magnetic field sensor coupled to the first portion. The first magnetic field sensor has a primary sensing direction aligned with a longitudinal axis of the sensor assembly. The sensor assembly further includes a second magnetic field sensor coupled to the second portion. The rolled section is shaped such that the second magnetic field sensor is oriented with respect to the first magnetic field sensor so that the second magnetic field sensor has a primary sensing direction aligned with an axis orthogonal to the longitudinal axis.

Abstract: A device comprises a magnetoresistive sensor configured to generate a signal indicative of an angular position of a magnetic field, the signal having an angular range of 180 degrees, and a differential Hall sensor pair comprising a first Hall sensor and a second Hall sensor. The differential Hall sensor pair is configured to generate a signal indicative of a polarity of the magnetic field. A second differential Hall sensor pair can also be used. The second differential Hall sensor pair is configured to generate a signal indicative of a polarity of the magnetic field.

Abstract: An electromagnetic device includes a jig and multiple wires. The jig includes a center member and coil-separating blocks. The coil-separating blocks protrude from the center member and are separated from each other to provide a coil channels. Each of the wires is wrapped on the jig, around the center member, and in one of the coil channels to form one of a multiple coils. Each of the coils is configured to connect to an electromagnetic navigation system and generate respective electromagnetic fields to be emitted relative to a subject.

Abstract: Multiple magnetic field generators have predetermined positions relative to a wearable device, such as a glove, and emit magnetic fields. Additionally, one or more magnetic field sensors are positioned on locations of the wearable device. A magnetic field sensor generates an output signal based on magnetic fields emitted by the magnetic field generator and detected by the magnetic field sensor. From the output signal and the predetermined positions of the magnetic field generators relative to the wearable device, a position and an orientation of the magnetic field sensor in a global coordinate system is determined. In some embodiments, a trained machine learning model is employed in conjunction with trilateration to obtain the position and orientation of the magnetic field sensor from its output signal.

Abstract: The present disclosure relates to a magnetic field sensor including at least one magnetic field sensor element configured to generate a first sensor signal in response to a magnetic field, at least one Hall sensor element configured to generate a second sensor signal in response to the magnetic field and a compensation logic configured to compensate one of the first and the second sensor signal using a respective other one of the first and the second sensor signal. In some embodiments, the at least one Hall sensor element can be vertical Hall sensor and can be arranged in a predetermined orientation.

Abstract: A detector access chamber (10) for a wireless directional detector (40), comprises a hollow body (12) having an open a upper end (20) and a lower end (24) at an opposing end, a lid (16) engageable with the open upper end (20) of the body (12) and preferably adapted to accommodate at least a 40 tonne vehicular load, and a detector holder (38) within the body (12) to hold a wireless directional detector (40). In use, the lid (16) and the detector holder (38) together define a volume adapted to constrain internal reorientation of the wireless directional detector (40) caused by vibrations. A submergible detector system (42) is also provided.

Abstract: A system and method for an improved magnetic sensor for use as a three three-axial sensor (TAS) is disclosed. The TAS provides an optimal sensor, concentric and the three coils are identical, with higher sensitivity resulting, a plurality of layers. More specifically, the sensor is made of multiple layers of printed circuit board (PCB). The multiple PCB layers are stacked according to various geometric shapes to create a sensor that enhances positional awareness. Concentric sensors may be arranged in a cube, stacked squares, or stacked squares decreasing in size to form a pyramid structure.

Abstract: A novel variable magnetic monopole field electro-magnet and inductor with equal and stable high density magnetic field winding system for use in any AC-DC electric motor and generator or in any AC transformer including interleaved ferromagnetic supportive cores positioned between the layers of windings.

Abstract: A magnetic field sensor for sensing an external magnetic field along a sensing direction comprises a sensor bridge. The sensor bridge has a first sensor leg that includes a first magnetoresistive sense element and a second sensor leg that includes a second magnetoresistive sense element. The first and second sense elements have respective a first and second pinned layers having corresponding first and second reference magnetizations. The second reference magnetization is oriented in an opposing direction relative to the first reference magnetization. The first and second sense elements have respective first and second sense layers, each having an indeterminate magnetization state. A permanent magnet layer is proximate the magnetoresistive sense elements. In the absence of an external magnetic field, the permanent magnet layer magnetically biases the indeterminate magnetization state of each sense layer in an in-plane orientation to produce a sense magnetization of the first and second sense layers.

Abstract: In one general aspect, a system includes a material including a surface, and a magnetic sensor configured to sense a first component and a second component of a magnetic field. The first component of the magnetic field may be orthogonal to the second component of the magnetic field. The magnetic sensor may include a first sense element included on a first angled surface sloping in a first direction relative to the surface of the material, a second sense element included on a second angled surface sloping in the first direction, and a third angled surface sloping in a second direction different from the first direction where the third angled surface can be disposed between the first angled surface and the second angled surface and can exclude a sense element.

Abstract: A marker for remote localisation in a medium, the marker including a magnetic field sensor configured to measure three different magnetic fields at three different respective times in three dimensions at a marker location in the medium, wherein the marker is configured to generate measurement data representing the measured magnetic fields for determining the marker location.

Abstract: A single-chip off-axis magnetoresistive Z-X angle sensor and measuring instrument. The single-chip off-axis magnetoresistive Z-X angle sensor comprises a substrate located on an X-Y plane, at least one X-axis magnetoresistive sensor and at least one Z-axis magnetoresistive sensor, the X-axis magnetoresistive sensor and the Z-axis magnetoresistive sensor being located on the substrate. The X-axis magnetoresistive sensor and the Z-axis magnetoresistive sensor each comprise magnetoresistive sensing units and a flux concentrator, the magnetoresistive sensing units being electrically connected into a magnetoresistive bridge comprising at least two bridge arms. The Z-axis magnetoresistive sensor is a push-pull bridge structure, a push arm and a pull arm of the push-pull bridge structure being respectively located at positions equidistant from a Y-axis central line of the flux concentrator.

Abstract: A system for locating an underground line. The system uses a self-propelled autonomous antenna, processor and propulsion system. The antenna detects a magnetic field from an underground line and generates an antenna signal. The processor is programmed to receive the antenna signal and generate a command signal. The propulsion system receives the command signal and moves the antenna along a length of the underground line, allowing the processor to map the same.

Abstract: A tool, method and system for ranging between two wellbores. The target wellbore includes a conductive member disposed within a portion of the target wellbore. An investigative wellbore includes an electromagnetic gradiometer positioned within the wellbore, as well as emitter electrode and return electrode spaced apart along an investigative wellbore, preferably in the process of being drilled. The position of the emitter electrode and the return electrode are selected to optimize current transmission to the target wellbore in order to enhance the electromagnetic field emanating from the conductive member at a desired point along the conductive member. Where the electrodes and gradiometer are carried by a drill string, gap subs are positioned along the drill string to minimize conduction of current along the drill string therebetween. In some embodiments, the gradiometer is positioned between the emitter and return electrodes.

Abstract: A sensor arrangement for measuring a speed of a rotating component includes a rotary encoder and sensor unit. The encoder is coupled to the component, and has a magnetic surface code with alternating North and South poles. The sensor unit has a housing, connecting cable, at least one sensitive measuring element, and contacting arrangement. The element is positioned in the sensor unit such that a main detection direction of the element is angled relative to a main extension direction of the sensor unit. The contacting arrangement electrically connects the element to the cable within the housing. Rotational movement of the encoder changes a magnetic field generated by the code at the element, which is configured to detect the change over a first direction parallel to the main extension direction or over a second direction perpendicular to the main extension direction in order to determine the speed of the component.

Abstract: Embodiments provide systems and methods for determining a position of a gear shift lever of a vehicle. A ferromagnetic target object having selected characteristics influences a magnetic field generated by a back bias magnet. A magnetic field sensor includes magnetic field sensing elements disposed proximate to the target object. Each magnetic field sensing element generates an electronic signal in response to sensed magnetic fields. The gear shift lever moves among a plurality of gears of the vehicle. The magnetic field sensor selects a set of the magnetic field sensing elements to determine a magnetic field difference based on a difference of amplitudes between the electronic signals that is related to a current position of the gear shift lever. Characteristics of the target object enable the magnetic field sensor to detect the position of the gear shift lever. The characteristics include edges proximate to a perimeter of the target object.

Abstract: Apparatus and associated methods relate to a measurement system that calculates a current in a conductor based on an odd-order spatial derivative function of signals representing magnetic-field strengths within a hole in the conductor. In an illustrative embodiment, the odd-order spatial derivative function may generate an output signal representing a spatial derivative of the in-hole magnetic field greater than the first-order. The three or more magnetic-field sensors may be configured to align on the hole's axis when inserted into the hole. When inserted into the hole, the sensors may be aligned on an axis perpendicular to a direction of current flow and be responsive to a magnetic-field directed perpendicular to both the direction of current flow and the aligned axis. Some embodiments may advantageously provide a precise measurement indicative an electrical current in the electrical conductor while substantially rejecting a stray magnetic field originating from an adjacent electrical conductor.

Abstract: A system and method for measuring the complex resistivity of a ground section. One embodiment utilizes stand-off capacity-coupled resistivity (CCR) sensing to inject current into the ground at a frequency within the range of 1 Khz to 1 MHz. A sensor detects the voltage which is used to determine the complex resistively of the ground and, thus, ground content. The system and method permits surveys to be conducted at speeds of 10-20 mph or more. Alternatively, current is injected into the ground along a plasma channel that is enabled with a high energy laser. Alternatively, an alpha particle generator may be used to inject the current. Multiple frequencies may be used within the range of 1 KHz to 1 MHz to produce an impedivity spectroscopy to thereby determine and/or display a map of ground content.

Abstract: A magnetic sensor module includes a magnetic sensor having an in-plane axis and an out-of-plane axis, and including a differential pair of sensor elements spaced apart from each other. The differential pair of sensor elements are configured to generate measurement values in response to sensing a bias magnetic field. The magnetic sensor module further includes a back bias magnet including two opposing poles, where the back bias magnet is magnetized in a magnetized direction that is parallel to the in-plane axis and generates the bias magnetic field; a first magnetic flux guide disposed at a first pole and configured to redirect a first portion of the bias magnetic field towards the magnetic sensor along the in-plane axis; and a second magnetic flux guide disposed at a second pole and configured to redirect a second portion of the bias magnetic field towards the back bias magnet along the magnetized direction.

Abstract: A magnetic field measurement device capable of accurate measurement of a magnetic field even after a sensitivity of an MI sensor varies is provided. A magnetic field measurement device (1) includes an MI sensor (2) and a sensitivity calculation means (3). The MI sensor (2) includes a magneto-sensitive body (20), a detection coil (21) and a magnetic field generation coil (22) that generates a magnetic field upon energization. The sensitivity calculation means (3) varies a current flowing in the magnetic field generation coil (22) in a state where an outside-sensor magnetic field HO acting on the magneto-sensitive body (20) from outside the MI sensor (2) is constant. Consequently, the magnetic field acting on the magneto-sensitive body (20) is varied to calculate a sensitivity a by dividing a variation in an output voltage of the detection coil (21) by a variation in the magnetic field acting on the magneto-sensitive body (20).

Abstract: A first electrode is located at a borehole and a second electrode is located at the surface of the earth. At least one transmitter is selectively connected to one or both of the first and second electrodes to cause current to flow within a subsurface of the earth. When the at least one transmitter is connected to the first electrode, a current is caused to flow at a deep depth within the subsurface and deep source data is acquired. When the at least one transmitter is connected to the second electrode, a current is caused to flow at a shallow depth within the subsurface and shallow source data is acquired. The deep and shallow source data are then combined.

Abstract: A computer system for dynamically switching modes within a magnetic sensor device communicates through a secondary communication channel with a first magnetic sensor device and a second magnetic sensor device. The first magnetic sensor device includes at least a magnetic signal receiving functionality. The computer system determines that the second magnetic sensor device includes magnetic signal transmitting functionality and magnetic signal receiving functionality. After determining that the second magnetic sensor device includes magnetic signal transmitting functionality, the computer system causes the second magnetic sensor device to begin transmitting a first magnetic field signal.

Abstract: A sensor device includes a mounting member having fixation surfaces inside, and at least one electronic component directly or indirectly fixed to the fixation surfaces of the mounting member, and the mounting member constitutes a part of a casing for housing the electronic component. Further, the fixation surfaces are perpendicular to each other.

Abstract: A sensor device for suppressing a magnetic stray field, having a semiconductor body, a first pixel cell and a second pixel cell integrated into a surface of the semiconductor body together with a circuit arrangement. Each pixel cell has a first magnetic field sensor and a second magnetic field sensor to detect a magnetic field in the x-direction and a magnetic field in the y-direction. The first pixel cell is spaced apart from the second pixel cell along a connecting line, and the substrate and the semiconductor body are disposed in the same IC package. A magnet is provided that has a planar main extension surface in the direction of an x-y plane and has a magnetization with four magnetic poles in the direction of the x-y plane. The IC package is spaced apart from the main extension surface of the magnet in the z-direction and at least partially within a ring magnet.

Abstract: An assembly of Hall sensors provides the following: the three averaged values for the magnetic field components are assigned to the same point in space, at the center of the Hall sensor assembly. This allows for the instantaneous measurement of the full field vector. With the appropriate electrical connections of the Hall elements from opposing surfaces of each pair, undesired planar Hall effect is practically cancelled out.

Abstract: A Real-Time Magnetic Field Camera wherein magnetic fields are instantaneously converted into an electronic display as a motion picture on a screen. The Real-Time Magnetic Field Camera is extremely portable, outputs magnetic field data instantly giving the user the ability to passively locate and study magnetic phenomenon as they exist in the real world. The Real-Time Magnetic Field Camera invention includes; magnetic sensors that are triangulated, at least one microcontroller and/or microprocessor, has a power source and has a means of an image display.

Abstract: Embodiments of the present disclosure relate to a magnetic position sensor (100; 200). The magnetic position sensor (100; 200) includes a magnetic field source (110; 210) with at least a first multi-pole magnet strip (120-1; 220-1) arranged on a first surface and with at least a second multi-pole magnet strip (120-2; 220-2) arranged on a second surface perpendicular to the first surface. The first and the second multi-pole magnet strips are arranged in a fixed relative position to each other and comprise different numbers of magnet poles (130; 132; 230; 232) along a common length.

Abstract: Disclosed examples provide wafer-level integration of magnetoresistive sensors and Hall-effect sensors in a single integrated circuit, in which one or more vertical and/or horizontal Hall sensors are formed on or in a substrate along with transistors and other circuitry, and a magnetoresistive sensor circuit is formed in the IC metallization structure.

Abstract: The disclosed device provides a high-accuracy plunger arrival detection system comprising a low-power magnetometer with high sensitivity and which is capable of sampling low or high intensity magnetic fields. The device processes gathered data from sensors, stores at least some processed data in memory, executes a trending algorithm which compares the magnetic field of the plunger to the ambient magnetic field or a predetermined set of initialization values, and generates an output which is relayed to a well controller. An output signal may be via hard wire, RF, wireless or other known means. In addition, the implementation of two sensing devices mounted in series and in spaced relation to each other, can provide for an actual plunger average velocity. An actual plunger average velocity, as opposed to approximate average velocity, can be used to better optimize well control and improve safety of the overall well production system.

Abstract: Provided is a magnetic field measuring device including a first sensor unit which includes a first coil sensor configured to output a first sensor signal, a second sensor unit which includes a second coil sensor configured to output a second sensor signal and disposed in a direction perpendicular to the first coil sensor, a third sensor unit which includes a third coil sensor configured to output a third sensor signal and disposed in a direction perpendicular to the first and second coil sensors, and a digital signal processor outputs magnetic flux density based on a voltage difference between the first and fourth nodes, wherein the first to third sensor units respectively output first to third output signals in which specific voltages of the first to third sensor signals are maintained for a predetermined period of time.

Abstract: A sensor for sensing an angular position of a rotatable element with respect to a non-rotatable element, the sensor comprising an encoder fast in rotation with the rotatable element, and a sensor body fixed respective to the non-rotatable element. The sensor body includes at least one sensing element adapted to sense angular position or rotation speed and direction of the encoder, a signal processor support member, and a sensing data output connector comprising at least one electrical wire connected to the support member. The sensor comprises a tubular body (accommodating the connector), including a first half-shell integral with the sensor body and a second half-shell assembled with the first half-shell around the connector. A tubular body internal surface comprises at least one radial ridge adapted to block a translation of the output connector along a longitudinal axis of the tubular body by penetrating into a sheath of the connector.