Abstract: A sensor is disclosed for monitoring a part which can move translationally relative to a sensor with reference to its position on the axis of motion. This part is for example a piston in a cylinder which is equipped with a sensor. The sensor can be actuated by means of a magnet which is oriented in the direction of motion with respect to the north and south pole and which is located on the movable part. The sensor has three reed contacts which are aligned in parallel and of which the first and the second reed contact are located in one plane and parallel next to one another with their lengthwise axes, by which they can be actuated almost at the same time by the magnetic field of the magnet which is located on the movable part. The third reed contact is located at a distance to the plane of the first and the second reed contact. This sensor with the first two reed contacts is mounted facing the actuating magnet.

Abstract: A switch adapter is integrateable into a seat belt lock and used for monitoring the locking and unlocking state of the lock. The switch adapter includes a monolithic plastic part and is at least two adapter areas which are movable with respect to each other. The first adapter area carries a first switch element and the second adapter area carries a second switch element. The switch adapter is suitably integrateable into the lock of the seat belt which is provided with a frame and a locking element which is movably mounted so as to switch the seat belt buckle between a locking position and an unlocking position. The switch adapter is used for detecting the locking state of the seat belt locking element. For this purpose, the switch adapter and the locking element are actively connectable to each in such a way that the switching state of the switching adapter and the position of the locking element are modifiable only simultaneously.

Abstract: A linear feedback device for an actuator comprises: a coiling belt, a return gear wheel, a driven member, and a sensing feedback device. The sensing linear feedback device serves to feedback the displacement data of the driven member that is moveable along a predetermined rail after engaging with the return gear wheel. The return gear wheel is coaxial with the coiling belt, and the coiling belt unwinds or retracts along with the actuator and drives the return gear wheel to rotate. The gear ratio between the return gear wheel and the driven teeth is used to adjust the back and forth moving distance of the probe. The linear feedback device can be installed in a small external hanging type body and offer an absolute position sensing function while preventing the error accumulation.

Abstract: An assembly type cleaning structure for an induction reader comprises a positioning member with an assembling portion and restricting portions. With the assembling portion, the positioning member can be detachably assembled on the induction reader. And the restricting portions enable the positioning member to be forced onto the induction reader. The user can assemble the cleaning structure onto the induction reader or remove it by himself according to the environment.

Abstract: A sensing apparatus according to the present invention includes a movable part rotatably supported by a base, a first input unit that is part or all of a first member formed integrally with or secured to the movable part, a second input unit that is part or all of a second member formed integrally with or secured to the movable part, a turning member turning together with the movable part, and a sensing element that is secured to a reference position of the base, senses a direction of the turning member relative to the reference position, and outputs a signal determined on the basis of the detected direction to identify a first linear displacement and a second linear displacement.

Abstract: A linear motion sensor has two pairs of opposed spaced apart stacks of two simple two-pole bar magnets. Each stack has one shorter outer magnet and one longer inner magnet, with the outer magnets centered on the inner magnets. The poles of the magnets are oriented the same in each pair, but opposite with respect to the other pair. The shape of the magnets results in the magnetic fields produced by each pair of magnets being substantially outside of the magnets themselves, so that the load line for the combined magnets is above the knee in its B/H material demagnetization curve. The pairs of magnets define a gap therebetween in which a magnetic field sensor is mounted for travel. The shorter magnets are about one half the length of the longer magnets such that the magnetic field in the gap varies substantially linearly as the sensor moves along the gap.

Abstract: A linear sensor is described with a casing (5), with a pin (7) which contains a permanent magnet (1) and which is mounted in the casing (5) in a linearly displaceable manner against the force of a spring (6), and with a magnetic field sensor (3) attached to said casing (5) for detecting of a displacement of the permanent magnet (1). The invention provides that the pin (7) is controlled by a first cylindrical guide (8) and a second cylindrical guide (8).

Abstract: A system senses the position of a movable element in a mechanical apparatus. The element moves along an elongated guide member, which is at least partially formed of a magnetic material. An excitation coil is positioned by the guide member and a sensing coil moves with the movable element. An excitation circuit energizes the excitation coil and a position sensing circuit sense a voltage or current in the sensing coil to determine the distance between the coils.

Abstract: A magnetic flux detection unit and a rectangular solid magnet are provided. The magnetic flux detection unit includes one or more pairs of Hall sensors, each pair having two Hall sensors arranged on a substrate. The solid magnet is arranged movably in a direction in a plane parallel to the substrate. Each pair of two Hall sensors is arranged on the substrate so that a line connecting the centers of magnetism sensing sections of each pair of two Hall sensors is orthogonal to a movement direction of the magnet. A tetragon has a long side and a short side and the long side has a inclination angle to the line connecting the centers of magnetism sensing sections of the each pair of two Hall sensors. The magnet has one N-pole and one S-pole separately magnetized in orthogonal to the substrate on which the Hall sensors are arranged.

Abstract: A position detector arrangement for detecting a position of a packaging material with magnetic marking comprises a sensor assembly comprising a plurality of magnetic sensor units each comprising an output providing an output signal. The magnetic sensor units are arranged in at least two sensor unit pairs, with the sensor units of each pair arranged with opposite sensitivity directions, and with the sensor units arranged to sense magnetic markings of the packaging material. A signal processing assembly is connected to the outputs of the magnetic sensors and comprises a combiner arranged to aggregate the output signals of the sensors to an aggregated signal; and a detector arranged to determine the position of the packaging material from the aggregated signal. Further, a method for detecting a position of a packaging material with magnetic markings is disclosed.

Abstract: A magnetoresistive continuous seat track position sensor system to determine longitudinal movement of the seat along a length of a track is described. In one embodiment, the system comprises a magnetic array in a fixed position and having a width and a length along the seat track length. The array is equipped with a plurality of magnets arranged along the length of the array. The magnets have a polarity oriented at an angle ? relative to each other. The system further includes a magnetoresistive sensor in spaced apart close proximity to the magnetic array. In one embodiment, the magnetoresistive sensor is movable relative to the array. Movement of the sensor relative to the array creates a sensor signal indicative of the longitudinal position of the seat in the track to control auxiliary safety features.

Abstract: A sensing mechanism includes a magnetic source, a magnetic flux sensor, a sensor backing on which the magnetic source and flux sensor are mounted, and a ferromagnetic target, where the magnetic source, magnetic flux sensor, and ferromagnetic target are positioned to form a magnetic circuit from the magnetic source to the target, from the target to the sensor, and returning to the magnetic source through the sensor backing.

Abstract: A position detecting sensor is equipped with a holder capable of accommodating a sensor member therein on which a magnetic sensor is disposed. A connector formed on an end of the holder is connected to a fitting through a connecting bolt. The fitting is disposed by insertion into a sensor groove of a cylinder apparatus, and after insertion of the fitting into the sensor groove, the holder and the fitting are fastened by the connecting bolt, thereby fixing the holder with respect to the cylinder apparatus.

Abstract: Methods of compensating for position errors due to signal scaling, linearity, and offset between first and second members in a displacement transducer are provided, including: producing a first signal at the first member; producing a second signal at the first member; modulating the first signal at the second member to include at least one region with an invariant amplitude as the first and second members are displaced relative to one another along a measurement axis; determining a relation between a sample of the second signal and the invariant amplitude of the first signal as an indication of an error parameter; and generating a compensated sample based upon the determined relation.

Abstract: An inductive proximity sensor includes a sensor housing, a sensing coil and an evaluation circuit. The sensor housing may generally include a sensing portion and a body portion. The evaluation circuit may be electrically coupled to the sensing coil and disposed in the body portion. The sensing coil may be positioned in the sensing portion such that the sensing coil is recessed from an outer edge of the sensor housing by a protective annulus disposed between the sensing coil and the outer edge. The sensing coil may be spaced from the sensor housing by a zone having low magnetic permeability relative to the sensor housing disposed between the sensing coil and the sensor housing. The zone may extend circumferentially around the sensing coil. A protective plate may be disposed between the outer edge of the sensor housing and the sensing coil and recessed from the outer edge of the housing.

Abstract: A variable inductance position sensor is described. The sensor includes a housing that is typically cylindrical in shape. The housing includes an open end and a closed end forming a cavity therein. A coil support member is affixed at one end to the closed end of the housing, or the coil support member may itself seal the housing at the closed end. The coil support member includes a coil assembly that includes a coil both of which are rigidly affixed to the coil support member. In this way, the coil is maintained in a fixed and predetermined orientation with respect to the housing. The combination of housing, coil support member and coil assembly and the coil forms an inner assembly. The coil support member includes a bore that forms a central annular region and the coil support member then forms an outer annular region as well. In addition, the housing may also include a passageway to allow the passage of lead wires from the coil assembly to the exterior of the sensor.

Abstract: A motion sensor which has a coil that surrounds a ferromagnetic core and at least one magnet that is longitudinally movable along the coil. The magnet causes a magnetic saturation of the ferromagnetic core in an associated zone that covers a portion of the length of the coil. An evaluation unit generates a position signal in dependence on the position of the movable magnet along the longitudinal extent of the coil. The coil has at least two superimposed winding layers that surround the ferromagnetic core and are wound in opposite directions. The windings of adjacent segments generally have about the same width over which the winding density remains constant. Thus, the winding density of the segments of one of the winding layers increases linearly over the length of the sensor while the winding density of the segments in the other winding layer linearly decreases over the sensor length.

Abstract: A position sensing system includes a plurality of two-axis anisotropic magneto-resistive (AMR) sensors to determine the position of a user interface. A magnetic member is coupled to the user interface, which is movable to a position along a random path. The plurality of two-axis AMR sensors is arranged in a two-dimensional sensor array that is spaced apart from the magnetic member. A signal processor circuit is operable to sense the electrical resistance values of each two-axis AMR sensor, to determine the position of the user interface from the resistance values, and to supply position feedback data representative of the determined position.

Abstract: A detector unit apparatus and method for operating and producing a detector unit to be adapted to varying environmental influences or to its own, in particular mechanical, electrical or magnetic parameters of the detector unit, which are dependent on measuring lengths. An inventive positional sensor operating according to the running time principle of a mechanically elastic shaft and comprising a waveguide, a positional element, e.g. a positional magnet, which can be displaced in particular along the waveguide, in addition to a detector assembly that is located on the waveguide and comprises a detector coil wherein the detector assembly has a current source so that a current can flow through the detector coil.

Abstract: A circular surface of a magnet is magnetized to an N-pole, and a back surface is magnetized to an S-pole. A detection unit moves in an X-Y plane at a position apart from the surface of the magnet. An X-direction detection element and a Y-direction detection element are installed in the detection unit. Both the X-direction detection element and the Y-direction detection element are magnetoresistive effect elements each having the bias magnetic field in a B-direction applied to a free magnetic layer directed perpendicular to the surface of the magnet. Each bias magnetic field is stabilized both in the X-direction detection element and the Y-direction detection element such that the detection unit accurately provides position detection output values in the X- and Y-directions.

Abstract: At least two coils located at different positions with regard to a positioning area are controlled to indicate a position of an object located within the range of magnetic fields generated by the coils. An embodiment of the invention comprises a generator that uses a multiplexing technique to generate coil enable signals for the at least two coils. The coil enable signals are generated for the at least two coils with any of different polarities and different intensities.

Abstract: In a magnetic position sensor, first and second detecting cores are disposed so as to line up with each other on opposite sides of a detecting gap. A magnet unit is displaced relative to the first and second detecting cores together with displacement of a measured object. The magnet unit has: first and second magnet cores that are disposed so as to line up with each other on opposite sides of an origin gap; and a magnet that generates two magnetic flux loops between the first and second detecting cores and the first and second magnet cores, the magnetic flux loops having a boundary at the origin gap.

Abstract: A joining element is proposed which, for force measurement, senses a relative motion between a magnet system and a magnet sensor apparatus. The magnet system is disposed with respect to the magnet sensor apparatus in such a way that a component of the magnetic field perpendicular to the relative motion is linearized.

Abstract: A self-energizing, non-contacting sensing device for detecting movement of ferrous elements, methods of use and assemblies therewith. The device includes a permanent magnet, a pair of ferrous conductors, an inductor coil and a microprocessor. The ferrous conductors are attached to the permanent magnet with free ends of the ferrous conductors being spaced from one another to provide a gap. The gap provides an open circuit in the absence of the moving ferrous elements and a substantially closed circuit in the presence of the moving ferrous elements. When the circuit alters between open and closed states, in the absence and presence of the moving ferrous elements, respectively, an electromotive force imparted on the inductor coil generates an alternating current. The microprocessor is configured to detect the alternating current produced in the inductor coil, and thus, can assess whether the ferrous elements are moving in a normal or abnormal manner.

Abstract: Flow rate control valve includes: a target probe formed of a magnetically-responsive substance and mounted to one end of a spool; a sensor housing mounted to the one end of the sleeve and having a cylinder section defining an inner space to permit entry therein of the target probe; and first and second coils provided around the cylinder section and axially spaced from each other by a predetermined distance. The probe is constructed so that magnetic response of the coils gradually varies in one direction in response to a linear position of the target probe. The first coil responds to the target probe, while the second coil dose not respond to the target probe. Impedance of the first coil varies with a linear position of the probe (31), and the linear position of the probe is detected through differential synthesis performed between outputs of the first and second coils.

Abstract: A telescopic actuator is adapted to be used on a right side or a left side of a body. The telescopic actuator includes a housing having a cylindrical shape and formed with an opening portion, an output rod supported inside the housing so as to be protrudable and retractable with respect to the housing, and a stroke sensor comprising a detectable portion provided on the output rod so as to be movable inside the opening portion of the housing and a detecting portion provided on the housing so as to face the detectable portion. A direction in which the detectable portion is eccentrically disposed with respect to a vertical plane including an axial line of the output rod is different depending on whether the telescopic actuator is used on the right side or on the left side of the body.

Abstract: An actuator having a fixed part, a movable part movable with respect to the fixed part in a travelling direction, and a non-contact position sensor connected to the movable part to read the position of the movable part. The position sensor has a reading device connected to the fixed part and having a ferromagnetic core; and a magnetic cursor, which is integrated in the movable part, is defined by a magnetized portion of the movable part, and is so magnetized as to locally saturate the ferromagnetic core at the magnetic cursor.

Abstract: A sensor arrangement for detecting an angle of rotation of a rotating body. At least one first sensor and one second sensor are connected to one another in a cascade in such a manner that the sensor signal from the first sensor is converted into a first control current which is applied as a bias current to the second sensor, the two angular dependencies of the first and second sensors being multiplied. This achieves improved interpolation when determining the angle of rotation on the basis of the sensor signals provided by the sensor arrangement.

Abstract: A position-sensing system magnetically senses the position of a piston rod moving with respect to a cylinder. A magnetically hard layer on the piston rod provides a recording medium. Information is perpendicularly magnetized in regions of the magnetically hard layer. These regions provide an encoding scheme for determining the position of the piston rod. Magnetic-field sensors are positioned over redundant tracks of magnetically recorded regions. Each magnetic-field sensor positioned over a given track senses the same magnetized regions while the piston rod moves with respect to the cylinder. Other magnetic-field sensors can sense ambient fields for use in performing common-mode rejection. A write head can dynamically repair damaged or erased regions detected by the magnetic-field sensors. Energized by a battery-backup power source, the magnetic-field sensors and associated circuitry can continue to track movement of the piston rod when the machinery is off.

Abstract: A sensor assembly for measuring a linear position includes a slider having a rack gear that engages a pinion gear. The pinion gear is rotatable relative to the slider responsive to linear movement. The pinion gear supports a permanent magnet that generates a magnetic field. Changes in the magnetic field caused by rotation of the pinion gear are sensed by a magnetic field sensor. Signals from the magnetic field sensor are indicative of a rotation of pinion gear and correspond to linear movement of the slider.

Abstract: In order to be able to perform a measurement of the run time of an electrical impulse in a position sensor through a single slow timed timing generator, while still capable to achieve a high precision of the measurement result, the entire run time is determined, so that the number of the completely performed system timings is counted as a coarse time value, and the fractions thereof are counted as a fine time value, in which the electrical impulse is started at a fixed point in time of the system timing, e.g. at the beginning of the timing, and the difference value is measured between the end of the coarse time interval and the arrival of the wave as a fine time interval, which is then digitized and computed with the coarse time value.

Abstract: A sensor for sensing the position of an object includes a magnet and a magnetic flux sensor. The magnet has dimensions that include a length, a width and a height. The magnet is adapted to generate a flux field. The flux field has a magnitude of flux and a flux direction. The flux direction changes along at least one of the dimensions. The magnetic flux sensor is mounted adjacent the magnet. The magnet provides a rotating magnetic field vector. A method for magnetizing a magnet to create the rotating magnetic field vector is also disclosed.

Abstract: A magnetostrictive application probe is disclosed wherein the probe includes a preassembled sensor element mounted as an application housing installation as an installable unit. The modular nature allows interchanging with various electronic assemblies, and may be an explosion proof installation.

Abstract: A magnetic type digital-analogic position-sensing device utilizes plural magnetic strips and plural digital sensing readers to perform position-sensing operation. One of the magnetic strips is provided with an analogic sensing reader. After being finely divided, the signal outputted from the analogic sensing reader can cooperate with the signals outputted from the digital sensing readers to obtain the displacement of the sensor. By such arrangements, the position-sensing device can both have high environment adaptability and high resolution.

Abstract: An apparatus for providing a signal related to a position of a part comprises an exciter coil, and a receiver coil disposed proximate to the exciter coil. The exciter coil generates magnetic flux when the exciter coil is energized by a source of electrical energy, such as an alternating current source. The receiver coil generates a receiver signal when the exciter coil is energized, due to an inductive coupling between the receiver coil and the exciter coil. The receiver coil has a plurality of sections, the inductive coupling tending to induce opposed voltages in at least two of the sections. Embodiments of the present invention include linear sensors, rotational sensors, and novel configurations for improved ratiometric sensing.

Abstract: An anti-rotation device or assembly for preventing the rotation of a magnet in a linear position sensor and eliminating the risk of undesired magnetic field measurements and incorrect sensor signal outputs. In one embodiment, the anti-rotation device is an anti-rotation plate which is fixed to the housing of the linear position sensor and a magnet carrier which includes at least one finger extending into a receptacle defined in either the edge or the body of the magnet carrier to prevent the magnet carrier from rotating relative to the plate. In another embodiment, the magnet carrier includes a key and the magnet includes a groove. The key extends into the groove for preventing the rotation of the magnet in the magnet carrier.

Abstract: A resolver comprises an excitation coil for receiving an excitation signal and a detection coil for outputting a detection signal. The detection sine wave is changeable according to an amount of displacement of a movable element provided in the excitation coil or the detection coil. The resolver detects the amount of displacement of the movable element based on the excitation signal and the detection signal. The detection coil is one coil formed of a first detection coil pattern and a second detection coil pattern connected in series or in parallel such that the second detection coil pattern is shifted in phase by a half cycle from the first detection coil pattern.

Abstract: A relative position of two articles is determined by generating a magnetic field using a magnetic element of a first article and determining a first measurement value and a second measurement value using a sensor arrangement of a second article, with the first and the second measurement values correlated to the size of the magnetic field in two different spatial directions and correspond to two different magnetic field components. The sensor arrangement is selected such that the first magnetic field component is essentially parallel to the direction of relative movement of the articles and the second magnetic field component is essentially perpendicular to the relative direction of movement of the articles. A difference signal of the absolute magnitudes of the first and second measured values is used to determine the relative position of the first and second articles. A position detector is also provided.

Abstract: A detector for measuring relative position along a measurement path comprising: a passive, laminar electrical intermediate device extending along the measurement path wherein the extent of the said electrical intermediate device in an axis normal to the measurement path varies along the measurement axis; at least one laminar transmit winding and at least two laminar receive windings wherein the said at least two laminar receive windings are displaced from each other along the measurement path wherein each laminar receive winding is substantially electrically balanced with respect to the at least one laminar transmit winding; arranged such that the mutual inductance between at least one laminar transmit winding and at least two laminar receive windings indicates the relative position of the electrical intermediate device.

Abstract: A method of sensing a position of a movable component of an operator interface includes a step of receiving a first signal from a first Hall effect sensor and a second signal from a second Hall effect sensor. The method also includes a step of determining the position of the movable component based on the first signal and the second signal if the first and second signals represent expected values. The method includes a further step of determining the position of the movable component based on one of the first and second signals if the other of the first and second signals represents an unexpected value.

Abstract: The invention relates to an inductive sensor unit having one or several coils, which are mounted on a printed circuit board in a planar manner. According to the invention, a change in the inductance of a sensor coil due to leakage currents in the inductive actuator is correlated with the position of the actuator in two respects i.e., with the distance x to the sensor coils and with the overlapping y of the sensor coils. As a result, an inductive push button switch and an inductive position switching device (a sliding switch) are provided. The invention also relates to the evaluation of the inductance by means of reactance measurement. A relative evaluation of the influence of adjacent sensor coils increases the precision of response in push button switches and, generally, a relative evaluation of the influence of adjacent sensor coils is carried out in position switching devices.

Abstract: A position detection apparatus includes a position detection target member, a magnet that moves in accordance with movement of the position detection target member, and a plurality of magnetic detectors provided on a surface opposite a movement plane of the magnet. A flat yoke is provided on the reverse face of the magnet. The magnetic polarity of a peripheral side part of the magnet is opposite to the magnetic polarity of a center part thereof. The peripheral side part is formed at a regional range that can be defined on the basis of a predetermined distance(s) measured from a side edge of the yoke.

Abstract: The device for counting the strokes of a piston sliding within a cylinder comprises a support housing a magnet which generates a magnetic field. The support also houses a sensor arranged to sense the magnetic field, such that the passage of the piston into a position corresponding with the magnet causes a disturbance in the magnetic field, which is sensed by the sensor, to indicate a stroke of the piston.

Abstract: A compact position sensor with high operational reliability is provided. This sensor has a tubular detection coil, a magnetic core movable in the detection coil, a drive circuit for the detection coil, a signal processing circuit for converting a change in impedance of the detection coil into an electric signal, and a guide means for guiding a movement of the magnetic core in the detection coil. The guide means has a guide portion connected to the magnetic core and a support portion for slidably supporting the guide portion. The magnetic core can be smoothly displaced in the detection coil without contacting an inner surface of the detection coil by a sliding movement of the guide portion relative to the support portion.

Abstract: The invention relates to a magnetic angular or linear sensor including at least one permanent magnet defined in a cylindrical (r, Q & z) or Cartesian (x, y & z) coordinate system and at least two magneto-sensitive elements, in which the magnet can move in relation to said two magneto-sensitive elements. The invention is characterized in that at least one dimension of the magnet varies as a non-constant function and in that the magnetization of the magnets is oriented in a single direction, i.e. x, y or z in the case of a magnet defined in a Cartesian coordinate system or r, Q or z in the case of a magnet defined in a cylindrical coordinate system.

Abstract: A device for measuring the position of a first body relative to a second body comprising: a first body which further comprises an electrical intermediate device; a second body which further comprises at least two inductors energised with an alternating current and at least one of which is formed by a planar spiral winding on a printed circuit board normal to the measurement axis and attached to the second body; arranged such that displacement of the electrical intermediate device causes a change in inductance of the planar spiral winding and whereby measurement of the ratio of the inductances indicates the position of the first body relative to the second.

Abstract: A first magnet is secured to the movable member at a first axial position and is associated with a first magnetic field. A secondary magnet is secured to the movable member at a secondary axial position and is associated with a secondary magnetic field. A sensor assembly comprises magnetic sensors arranged in an array (e.g., on a fixed member). A first magnetic sensor is spaced apart from the sensor assembly such that the first magnetic sensor detects the first magnetic field of the first magnet in a first state and an absence of or change in the first magnetic field in a second state. A data processor is arranged for determining an axial position of the moveable member based on at least one of the magnetic fields sensed by the sensor assembly.

Abstract: A position detector can correct a position for detecting a moving object without changing a physical location of a moving mechanism, a Hall element and/or the like. Either a permanent magnet 19 or Hall elements 16a, 17a, 17b, 17c is mounted on a moving object 3 moving along a fixed movement path, and the other of them is mounted on the fixed movement path of the moving object 3. A voltage output from each Hall element is detected based on an electromotive force induced in the Hall element in accordance with a facing position between the permanent magnet and the Hall element, for detection of the position of the moving object. A comparison unit a2 outputs a detection signal for the moving object when the voltage value output from the Hall element exceeds a threshold, and comprises a variable controlling unit R for variably controlling the threshold.

Abstract: In a measuring device for automation technology with single-hand servicing, a housing closable with a lid is provided. Arranged at an edge of the lid is a movable ring element, which is mounted to be slightly shiftable parallel to the longitudinal axis of the lid and to be rotatable about the longitudinal axis of the lid. On the lid are sensors, which serve for registering rotary and linear movement of the ring element, via which a display unit is operated.

Abstract: A magnetic field sensor comprises a first and a second carrier foil and a spacer arranged there between. The spacer delimits a sensing region of the sensor in which the first and second carrier foils can be brought together against the their resiliency. At least two electrodes are arranged in the sensing region in such a way that an electrical contact is provided between them when the first and second carrier foils are brought together. The magnetic field sensor further comprises additional magnetizable layer associated with the first or the second carrier foil so that the first and second carrier foils can be brought together in response to a magnetic field.