Abstract: A sensor ring and method for forming same is provided in which the ring has a stamped configuration bent into a final configuration. The stamped configuration has a flat, annular sensor portion extending from a cylindrical hub portion and the sensor portion has a plurality of substantially identical, circumferentially spaced window openings therein. Each window opening has an inner edge adjacent to and spaced radially outward from the hub and an outer edge spaced radially inward from the outer peripheral end of the sensor portion and leading and trailing edges extending, respectively, from the ends of the inner and outer edges to form each window as a polygon, preferably a trapezoid. In the final configuration, the sensor portion has a bight segment extending radially outward from the hub and a sensor or finger segment extending from the bight segment in the direction fo the hub to form a U-shaped cross-section.

Abstract: To provide device capable of enhancing the detection accuracy of a wheel speed detecting device and reducing cost. A wheel speed detecting device for a rear wheel includes a pulsar ring mounted on a rear wheel hub, and a pulse counting sensor mounted on a swing arm. The pulsar ring includes a disc, and pulse detecting holes are formed at a predetermined pitch on a pitch circle drawn at a radially inward circumferential position spaced at a predetermined distance from the outer edge of the disc. The pulse detecting hole is formed in a position on the center side apart from the outer edge of the pulsar ring, leaving the outer edge of the pulsar ring in a circular form. Therefore, it is possible to prevent warpage of the pulsar ring by the outer edge portion if the pulse detecting holes are made by pressing.

Abstract: A rotation detecting device has the following structure. An intermediate assembly includes terminal pins having projections at given portions thereof; a molded plastic base in which the given portions of the terminal pins are embedded with the projections being exposed to the outside; and a plurality of electronic elements connected to the exposed projections of the given portions of the terminal pins. One of the electronic elements is a sensor element which is mounted on the molded plastic base. A molded plastic housing entirely and hermetically covers the intermediate assembly except a connector part thereof where leading ends of the terminal pins are positioned. For producing the rotation detecting device, two or three molding assemblies are used in order.

Abstract: The present invention relates to a device for measuring swing velocity of a golf club head sing a resonance circuit. The device according to the present invention comprises a resonance circuit portion for detecting impedance change amount and voltage signal by the amount of impedance change in response to the approach of a golf club head having conductivity; an amplification portion for amplifying the voltage signal detected by the resonance circuit portion, a wave shaping portion for outputting the voltage signal as pulse-shaped peak wave; a mircocomputer for controlling the operation of calculating the time difference between the peak waves and indicating swing velocity; and a display portion for displaying the swing velocity data according to the output signal of the microcomputer.

Abstract: This wheel speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.

Abstract: A camshaft system for use with an internal combustion engine including a camshaft having a plurality of lobes to actuate valves in the internal combustion engine, a sprocket coupled to the camshaft to drive the camshaft, and a target wheel coupled to the camshaft, the target wheel having an irregular surface capable of providing process data for operation of a plurality of internal combustion engine configurations.

Abstract: Inductive sensor for non-contact detection of discontinuities of a conductive or ferromagnetic target for determination of target position, movement and speed, or generally of a magnetic image, including a plurality of receiving secondary windings associated with each exciting primary winding, configured to obtain electric signals optimized as a function of the discontinuities of the target. The sensor, combined with a suitable electric measuring circuit, allows global analysis of the signals provided by the secondary windings and configuration of a network in accordance with a predefined selection. An adaptive circuit allows auto-calibration of the sensor.

Abstract: A position, speed and displacement speed detector for a continuous reference element (2) is described that is constituted by a pair of polar search elements (1A, 1B), comprised of magnetic sheets having longitudinal teeth (10A, 10B) distributed along its face turned to the continuous reference element (2). The polar search elements further comprise a winding (3A, 3B) which, when fed with a pre-established current, generates a magnetic field. The voltage generated in that coil is a function of the permeability measured by the polar search element (1A, 1B) and, accordingly, is a function of the relative position between the teeth of the pair of polar search elements. By reading the coil voltages and through the device for identification of the direction and relative displacement speed of the teeth of the pair of polar search elements and reference element, the position, direction and displacement speed are identified.

Abstract: A self-compensating control circuit for use with a magneto-resistive sensor. The control circuit includes a first stage amplification and offset function that removes a DC component from the input signal and maximizes an AC component of the input signal within the dynamic range of the control circuit. Subsequent stages remove the remaining DC component, if any, and provide suitable additional amplification. A comparator provides a digital output based on the processed input signal and a threshold signal.

Abstract: A device and a method to detect a broken tooth in a pulse signal by measuring one pulse cycle and another pulse cycle, determining whether a ratio of one pulse cycle and another pulse cycle is a multiplied number while wheel speed is constant.

Abstract: A wheel speed sensor latch for securing a wheel speed sensor to a bearing cap of a vehicle speed sensing assembly. The latch includes a main body having a collar section adapted for receiving the wheel speed sensor therethrough. The latch further includes a pair of bifurcated legs extending from the main body. The pair of bifurcated legs being engageable with a pair of latching members formed on the bearing cap such that the pair of latching members and the pair of bifurcated legs cooperate to secure the wheel speed sensor on the bearing cap.

Abstract: A method of manufacturing a rotation sensor is provided. In the method, an insert conductor having a predetermined shape and having at least a connector terminal and a conversion device terminal is provided. The insert conductor is insert-molded in a resin base such that at least the connector terminal and the conversion device terminal of the insert conductor remain exposed from the resin base. A resin connector part is molded such that the resin connector part encircles the connector terminal. Also, a magnetoelectric conversion device is connected to the conversion device terminal of the insert conductor, and positioning parts are provided at a tip of the resin base. In addition, the magnetoelectric conversion device is sandwiched between the positioning parts to securely hold the magnetoelectric conversion device, and a press fit part is formed at the tip of the resin base.

Abstract: A vehicle variable reluctance sensor includes a hollow generally cylindrical sensor housing with an open proximal end. Within the interior of the sensor housing is a coil wound around a “T”-shaped spool. The coil is connected to two electrical terminals by two electrical leads. A channel is formed in the spool between the coil and the electrical leads and the electrical leads are disposed within the channel. The channel is flanked on each side by a lip that extends outwardly from the spool. If the electrical leads become slack under extreme temperatures, the configuration of the channel, in conjunction with the lips, prevents the electrical leads from coming out of the channel and unwinding the coil. As such, it is not necessary to tape the coil or otherwise immerse the coil in varnish to prevent the coil from unwinding.

Abstract: A device for detecting rotary movement has a rotary part configured to be fixedly connected to a motor shaft and rotate with the motor shaft. One or more sensors are positioned opposite the rotary part and configured to sense rotary movement of the rotary part and transmit signals derived from the rotary movement. A processing unit is connected to the sensor and receives and processes the signals transmitted by the sensor. A receptacle is provided to secure the sensor. The sensor and the receptacle have positioning elements cooperating with one, another so as to adjust a position of the sensor relative to the rotary part in a rotational direction of the rotary part. The device cooperates with a mounting device for mounting and positioning the rotary part relative to the sensor.

Abstract: A drawn cup wheel bearing is mounted within an axle tube and supports an axle shaft mounted in the drawn cup wheel bearing with a vehicle mounting flange of the axle shaft positioned axially outwardly of the axle tube. An annular target is supported from the vehicle mounting flange of the axle shaft such that the target is positioned axially inwardly of the vehicle mounting flange and is positioned over the axle tube. A sensor is supported from the axle tube over the annular target for sensing rotation of the annular target.

Abstract: An improved method of measuring vehicle speed based on the output signal of a variable reluctance speed sensor responsive to the teeth of a transmission output gear adjusts the sensitivity of a signal processing circuit in dependence on the mode of operation of the vehicle so as to reduce sensitivity to output signals produced by gear tooth vibration. The signal processing circuit only passes portions of the sensor output signal that have an amplitude greater than a predefined threshold and a frequency less than a predefined frequency, except when an electronic controller identifies a condition of potentially erroneous speed sensing characterized by substantially stationary vehicle operation with the engine decoupled from the output gear and an engine speed in excess of a calibrated threshold.

Abstract: A first portion of a perimeter of an outer circumferential portion of a tire is magnetized with a first polarity along the steel belt in one circumferential direction less than 360° and a second portion of the perimeter is magnetized with a second polarity in an opposite circumferential direction. The magnetic field generated by the magnetized steel belt is detected by two magnetic detection elements, which are set so that the magnetic field detection directions of the two magnetic detection elements are parallel to the side surface of the tire, and the two elements are juxtaposed in a direction perpendicular to the side surface of the tire.

Abstract: A magnetic effect sensor system has a target with a first set of regularly spaced tooth/slot transition target features and a second set of different tooth/slot transition target features interspersed within the regularly spaced features. The mix of target features allows a single magnetic effect sensor to output a clocking pulse train for misfire detection and an encoded pulse train for determining absolute mechanical position by utilizing two thresholds on the sensor output waveform.

Abstract: A mounting for a wheel-revolution sensor in the wheel support of a motor vehicle for scanning a revolving pole ring on a wheel comprises an insert which passes through a bore in the wheel support which receives the sensor in an ideal position with respect to the pole ring.

Abstract: A sensor ring is coaxially mounted on a free end portion of a rotating element for detecting rotations of the rotating element. The free end portion defines an axially extending cylindrical surface and a radially extending stop surface for mounting of the sensor ring. The sensor ring has a cylindrical portion which defines a cylindrical center opening to be press fitted over the axially extending cylindrical surface of the free end portion of the rotating element. The sensor ring also has a flange portion which extends diagonally radially outward from one end periphery of the cylindrical portion such that the flange portion abuts on the stop surface of the free end portion of the rotating element when the sensor ring is completely mounted on the rotating element. The diagonally extending flange portion can avoid a connection curvature between the axial and radial surfaces of the free end portion of the rotating element during the press fitting operation.

Abstract: Through differentiation of input signal Vw from a sensor the angular frequency &ohgr; becomes included in the amplitude component. Through a plurality of differential operations the amplitude including the angular frequency &ohgr; varies, but the time-dependent term becomes equal. Since the amplitude of the signal Vw outputted from the revolution speed sensor 10 is approximately constant, the angular frequency &ohgr; proportional to the revolution speed can be extracted by determining a ratio thereof.

Abstract: A motor unit is provided for operating an internal hub transmission, and a speed sensor is mounted to the motor unit for detecting a speed signal external to the motor unit. Since the speed sensor is mounted to the motor unit, the position of the speed sensor can be securely fixed on the bicycle. Also, the wire for the speed sensor may be integrated into the wiring harness for the motor, thus eliminating the requirement of a separate wire route along the bicycle.

Abstract: A bearing housing is provided with a speed measurement device incorporating a sensor arranged to detect the rotational speed of a shaft supported in a bearing in the bearing housing. The sensor is arranged to detect at least one marking rotating with the shaft and having a cable connected to an external evaluation unit. The marking is a surface irregularity or irregular surface portion of a component present in the bearing housing for another mechanical purpose and rotating with the shaft.

Abstract: An integrated value &Dgr;tsum of pulse intervals &Dgr;t during one rotation of a signal rotor is computed, and the integrated value &Dgr;tsum is updated by replacing the pulse interval achieved one rotation ago with a newly obtained pulse interval &Dgr;t(m) after exceeding one rotation, while determining an average pulse interval &Dgr;tave which is an average value of the integrated value &Dgr;tsum. That is, the pulse information is extracted on the basis of time information required for one rotation of the tire. After the one rotation of the tire, pulse information having the same uniformity as one rotation ago is regained. Therefore, it is possible to easily obtain pulse information with the uniformity cancelled, by replacing the pulse information achieved one rotation ago with the newly obtained pulse information.

Abstract: A method and a sensing device transmit speed information and additional information over a transmission channel. For this purpose, the transmission clock cycle is selected to reflect the speed and is detected by the sensing device. The additional information is transmitted as a modulation of the transmission clock cycle.

Abstract: A rotational sensing assembly including a ferromagnetic sensor wheel rotationally fixed to a shaft having a tooth pattern including a missing tooth. An inductive sensor is mounted adjacent the periphery of the sensor wheel and in communication with a processor. The sensor produces a generally sinusoidal signal in response to the wheel rotation, with voltage zero crossings that are time stamped by the processor. The geometry of the sensor wheel around the missing tooth location is altered to equalize the induced voltage in the sensor for fixed time intervals in order to maintain proper timing of the zero crossings in the sensor signal.

Abstract: An ABS sensor bracket made up of two mounting wing plates engaged to a sensor receiver. The sensor receiver is generally cylindrical and is mounted between the wing plates such that the sensor receiver is asymmetric axially relative to the caliper anchor plate. When viewed from the side, there is a shorter end of the sensor receiver jutting out a shorter distance from the wing plates than an opposite longer end of the sensor receiver. In one embodiment, a first end of the sensor receiver has an outer diameter circumference greater than that of the opposite second end. The caliper anchor plate has an outer edge slot for mounting of the ABS sensor brackets. The outer edge slots are generally ‘U’ or ‘V’ shaped. There are mounting holes in the outer radial areas bordering the outer edge slots.

Abstract: A speed sensor assembly is provided that isolates the internal components of the speed sensor from detrimental external environmental influences. Further provided is a new seal that seals between a housing and an overmold of a speed sensor and is capable of use in speed sensors of varying types and of all different sizes and shapes. Provided is a seal in which a bead of glue cured by ultraviolet light is applied around part of the exterior surface of a housing, after which an injected molded plastic overmold is applied over at least that part of the housing having the applied ultraviolet cured glue. In this way, once the housing is overmolded, the ultraviolet cured glue forms a gasket-like seal between the housing and the overmold preventing the penetration of water or other contaminants into the internals of the speed sensor. Also provided is a mounting fixture for use during a process of applying the seal to the housing.

Abstract: An apparatus (1) is described for determining the angle of a first rotatable body which coacts with two further rotatable bodies. The angle of the two further bodies can be measured, and the angle of the first body can be calculated therefrom. According to the present invention, means are provided with which simultaneous measurement of the angles of the two further bodies can be achieved. The accuracy of the determination of the angle of the first body is thereby improved.

Abstract: A tire (12) used includes a steel belt in its outer circumferential portion. A magnetic sensor (14) including a pair of magnetic detection elements (18A, 18B), which are arranged so that their magnetic detection directions become parallel to each other or series each other, is set in the vicinity of a rear tire (12) in a trunk room of a vehicle (10). Changes in magnetic field upon revolution of the tire (12) are differentially detected by the magnetic detection elements (18A, 18B), and the revolution of the tire (12) is detected on the basis of the differentially detected output waveform. Among a plurality of peaks present in the differentially detected output waveform, a peak, the potential difference from the immediately preceding peak of which is equal to or larger than a predetermined threshold value, is detected as an effective peak, which is effective for tire revolution detection, and the revolution speed of the tire is calculated by detecting the number of effective peaks.

Abstract: A rotation detector (100) includes a first transmitting element (1) and a second transmitting element (3) each disposed opposite a gear rotor (5) attached to a rotating body as a detected member. A signal processing device (13) is connected to the first transmitting element and the second transmitting element for generating pulse signals based on rotation signals generated by the first transmitting element and the second transmitting element. The rotation detector is characterized in that the signal processing device generates the pulse signals with different pulse widths to distinguish between the case where the first transmitting element generates the rotation signal prior to the first transmitting element and the case where the second transmitting element generates the rotation signal prior to the first transmitting element.

Abstract: An outer ring 4 fitted into a stationary housing 1 is clamped for axial positioning between a stop ring 12 and the stepped face 10 of the step portion 9 on the inner peripheral surface of the housing 1. A sensor 20 is carried in a sensor carrier 19 having a cover 21, such that the cover 21 is fitted into the step portion 9 on the inner peripheral surface thereof by way of interference fit, and that the cover 21 has an abutting portion 23 against the stepped face 10.

Abstract: A roller bearing unit having a rotating speed detector includes an outer race, an inner race, a cover made of synthetic resin, a sleeve made cylindrically of metal and a seal ring fitted in an engaging groove of an engaging portion of the cover. The seal ring is disposed between the inner surface of the outer race and the cover so as to prevent the entrance of muddy water into the unit.

Abstract: A speed sensor (10) includes a sensor housing (12) mounted to the wall of a transmission, and a pole piece (34) extends out of the sensor housing (12) into the transmission fluid. The pole piece (34) is held by a plastic spool (26) within the sensor housing (12), and an electric coil (28) surrounds the spool (26) and is magnetically coupled to the pole piece (34). The spool (26) is formed with a rib ring (41) that extends away from the pole piece (34) and that terminates in an outer periphery that is closely spaced from the inside wall of the sensor housing (12). To block metal particles in the fluid from entering between the spool (26) and sensor housing (12) that would otherwise damage the coil (28), two ribs (60) are formed on the outer periphery of the spool (26), and an interference fit is established between the ribs (60) and the sensor housing (12) such that the ribs (60) are deformed and the contaminants thereby blocked.

Abstract: A sensing coil affixed to the outside of an induction motor housing uses flux signals from the motor to measure motor speed. In particular, components of the rotor current are measured and compared to analysis from stator fundamentals and sidebands to determine the true rotor frequency which can then be used to determine the motor speed. A shield and/or a compensating coil can optionally be used to filter out extraneous signal noise.

Abstract: An evaluation method for an output signal of a sensing device for scanning a cyclic movement, consisting of a rotatable pole wheel provided with equidistant teeth and an inductive sensor, permits recognition and display of damage to the pole wheel, in particular defective or missing teeth. Contrary to known evaluation processes, where error monitoring of the output signal is carried out for a relatively short time period comprising few signal cycles of the output signal, an observation of the output signal is effected for a sufficiently long time span in the evaluation process according to the invention, such that within the time span, at least two complete revolutions of the pole wheel are completed. To detect damage to the pole wheel, the sudden changes in the output signal occurring in the course of a complete revolution are recorded and are compared with changes recorded in previous, complete revolutions.

Abstract: In normal operation, a sensor element emits information only as to whether two or more field-sensitive components are located in peripheral zones of identical or different electromagnetic field strengths of a pulse generator. In order to permit sensor elements of this type determining immediately upon activation of a supply voltage whether an identical electromagnetic field strength on both components corresponds to a zone of low (L) or high (H) field strength, according to the present invention, the sensor element, upon activation of the supply voltage, is initially operated so that the absolute field strength is measured for a given time. If there is a difference circuit between two field-sensitive components (3, 4), the measurement is carried out because one of the components is temporarily switched off, both components are connected in parallel, or both components are connected in series.

Abstract: A rotor to be used in combination with a wheel speed sensor forming part of an anti-lock brake system. The rotor comprises an annular axial central section formed of a magnetic material. First and second annular axial end sections are coaxial and integral with the central section. The first and second annular axial end sections are formed of the magnetic material and arranged such that the annular axial central section is located between the first and second annular axial end sections. A plurality of holes are formed in the annular axial central section. The holes are arranged at equal intervals in the peripheral direction of the annular axial central section. A plurality of first and second depressions are respectively formed in the first and second axial end sections. A pair of the first and each second depressions are respectively located opposite to each other and connected with each hole.

Abstract: An electronically assisted power steering system for motor vehicles contains a primary shaft (4), which is in operative connection with a manual steering wheel for transmitting the steering torque required for steering the steerable wheels of the vehicle. An auxiliary force can be exerted on the primary shaft (4) or the output member by a servo motor (6). A detection unit is used for non-contact detection of the direction and value of a steering angle and/or other movement-dependent values occurring at the primary shaft (4). The detection unit includes at least one pulse transmitter (13) connected with the primary shaft (4) or the output member, and at least one sensor (10). The pulse transmitter (13) is located in the interior of a housing (1), and the sensor (10) outside the housing (1). There is a gap between the pulse transmitter (13) and the sensor (10). The housing (1) is closed in the area located between the pulse transmitter (13) and the sensor (10).

Abstract: The analysis or evaluation circuit for analyzing an alternating voltage or current signal that includes a D.C. voltage or D.C. current component includes a window comparator having a circuit portion for comparing the alternating voltage or current signal to an upper threshold and a lower threshold and another circuit portion for adjusting the upper and lower threshold when one of the upper and the lower thresholds is reached by the alternating voltage or current signal. By means of a VCL output signal that switches when a threshold adjustment occurs, a frequency dependent signal may be produced that can be analyzed to obtain a rotational speed of a rotational body from which the input alternating voltage or current is derived.

Abstract: A variable reluctance sensor interface module having a variable attenuation circuit and a rectifier and differential single-ended conversion circuit for operating in a current mode to attenuate a differential input voltage. The variable attenuation circuit receives an input differential voltage from a magnetic sensor and converts the differential voltage to current. First and second current sourcing circuits, each including a plurality of current sourcing branches, receives the current and provides current attenuation by switching in and out transistor-based current sourcing branches. The rectifier and differential to single-ended conversion circuit converts the variably attenuated currents to a voltage output.

Abstract: An apparatus for positioning a detection device for monitoring a rotatable machine element. The apparatus for positioning a detection device for monitoring a rotatable machine element includes a rod having one end removably mountable on the rotatable machine element. A plate is securable to the rod. A bearing assembly is engagable with the rod. A carriage is attachable to the bearing assembly for holding the detection device adjacent the plate for monitoring rotation of the rotatable base piece.

Abstract: A sensor built-in bearing is provided wherein the sensor is removably connected to the cover through a threadable fixing portion and no foreign matter from outside enters the interior of the cover through the threadable fixing portion.

Abstract: A transducer is provided which produces electrical pulses whose amplitude is constant, but whose frequency varies as a function of the rotational speed of a shaft. In addition, the number of pulses per revolution can be selected at the time of assembly by changing a single component. The number of pulses per revolution can be from 1 to 45. This transducer is housed in a compact die-cast aluminum housing suitable for applications as a vehicle, and for distance measuring. The housing has first and second apertures running transverse to each other and merging with each other in the housing, the first aperture receiving a tube having an open portion and an outer peripheral wall thereof. A Hall-Effect sensor is received in the tube so that the Hall-Effect sensor is positioned adjacent the open portion of the tube. The second aperture receives a rotatable shaft having a body with sensible elements thereon, the body being positioned to lie adjacent the Hall-Effect sensor.

Abstract: Onto a long rectangular board like base board, first Hall IC's are mounted at specified equal pitches in the longitudinal direction, and second Hall IC's are mounted at the equal pitches from a position shifted by a phase difference of 90 degrees in the longitudinal direction relative to this first Hall IC, and a single rectangular board like field magnet (12) having a length of a half of the equal pitch is mounted, opposite to the first Hall IC's and the second hole IC's, and consequently, a linear encoding device is provided, by which a long positional measurement can be performed, and further, which has a simple arrangement.

Abstract: Rolling bearing including a stationary race 1, a rotating race 6, at least one row of rolling bodies 3 placed between the stationary race 1 and the rotating race 6, an encoder 23 secured to the rotating race 6 and concentric therewith, and a sensor 14 supported by a sensor carrier block 15 secured to the stationary race 1 and arranged facing and a small gap away from the encoder 23, the travel of which, during rotation, is detected by the sensor 14. The sensor carrier block 15 is secured to the stationary race 1 by a metal retainer 16 positioned with respect to the stationary race 1. The retainer 16 is positioned on a radial face 5 of the stationary race 1 of the rolling bearing and welded to this race.

Abstract: A device for detecting electromagnetic stray effects in systems with at least two inductive sensors which provide an essentially periodic output signal, performs a signal evaluation for evaluating signals of the sensors, a test for detecting an electromagnetic stray effect, whether periods of the signals to be evaluated lie within a period length of expected stray effects, a test, if applicable, whether detected signal progressions have at least a progression typical for stray pick-up, plausibility tests by means of at least one further detected signal in which a signal to be checked is compared with parallel measured other signals, and detecting a stray effect only if all tested conditions provide a result which is typical for stray effects.

Abstract: A digitizing probe and method is disclosed for accurately locating the edges and determining the orientation of a generally planar, metal workpiece relative to the orthogonal axes of a computer numerical control ("CNC") cutting machine. The CNC cutting machine includes a microcomputer controller for moving a transverse gantry in the longitudinal and lateral directions which define the orthogonal axes of the cutting machine. The digitizing probe and the cutter of the cutting machine are mounted on separate vertically movable support arms secured to support brackets provided on the transverse gantry. Thus, the digitizing probe and the cutter may be independently positioned at predetermined heights above the top surface of the workpiece. The digitizing probe includes a plurality of analog inductive proximity sensors arranged in a fixed, predetermined array.

Abstract: The present invention relates to a direct connector type magnetic revolution sensor for detecting the number of revolutions of a rotating axis in for example an automotive transmission, and intended to present reliable, yet inexpensive, magnetic revolution sensors, with which the varying connector specifications are easily met by using a detection block as the common component.The magnetic revolution sensor comprises a detection block(2); a cap(1) for protecting the block; and a connector block(3) having a flange(3a) on which a space for installing said detection block(2) and said cap(1) is provided, as well as connector terminals(10) in the other end thereon separated by said flange(3a). The detection block(2) attached on said installing space being electrically coupled with said connector terminals (10). The detection block, a key component for the reliability, is used as the common constituent component having an established reliability.

Abstract: The present invention concerns the domain of inductive contactless sensors, allowing the position and/or the movement of a target sensitive to a magnetic field to be detected. The invention provides a miniature sensor comprising at least a primary coil generating an alternating magnetic field and at least two secondary coils for picked up such field, the coils being planar. The amplitude of the signal picked up by each coil is when the target passes in front of the coils, so that by measuring the signal amplitude or phase modulation, the speed and the direction of movement, or position of the object to be detected, is detected.