WO2009121193A1 - Magnetische linearsensoranordnung - Google Patents
Magnetische linearsensoranordnung Download PDFInfo
- Publication number
- WO2009121193A1 WO2009121193A1 PCT/CH2009/000085 CH2009000085W WO2009121193A1 WO 2009121193 A1 WO2009121193 A1 WO 2009121193A1 CH 2009000085 W CH2009000085 W CH 2009000085W WO 2009121193 A1 WO2009121193 A1 WO 2009121193A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sensor arrangement
- linear sensor
- magnetic
- magnets
- arrangement according
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
Definitions
- the invention relates to a magnetic linear sensor arrangement for detecting the position of a component adjustable along a predetermined travel path according to the preamble of patent claim 1.
- Position sensors are widely used to detect the position or state of motion of a mechanical component.
- the information detected by the position sensor is usually converted into electrical signals that change depending on the position change of the component.
- Position sensors are an important part of many mechanical products, enabling intelligent control.
- the detection of a path traveled along a predetermined path of a component is, for example, in
- the analogue transaton position sensors used for this often work according to the ohmic or the induction principle. at Both principles use the analog (continuous) conversion of a travel path into an electrical signal.
- the electrical voltage is picked up by a grinder from a resistance wire whose size depends on the wire length.
- Such potentiometers have the disadvantage that the grinder and the wire are subjected to relatively high wear.
- a magnetic field is induced in the measuring system via an alternating voltage, which generates an electrical voltage in a coil. The coil is moved relative to the rest of the measuring system. The voltage induced in the coil depends on its position in the measuring system. With the help of suitable electronic circuits, a position measuring signal can be obtained therefrom.
- the measuring method is non-contact; however, an AC power source is needed and a relatively large amount of electronic effort is required to produce a position sensing signal.
- a Hall sensor In the gap between the Fl ⁇ ssleit- rails a Hall sensor is arranged, which is displaceable relative to the long extension of the Flußleitschienen.
- the output signal of the Hall sensor which changes as a result of the relative displacement, is further processed and used as a measure of the distance traveled by the monitored component.
- the disadvantage is that the sensor is guided between rails, and that the flux density in the center region is relatively small, so that the structure is susceptible to interference from external magnetic fields and positional tolerances of the sensor.
- a disadvantage of other known systems which are based for example on the basis sliding calipers, is that they work usually mkremental, ie that information about the absolute position of the moving component is only available if before the measurement a zero point position, corresponding to a Basic output signal of the sensor is set. If, for example, in the case of a seat adjustment, the seat is initially adjusted before the engine and thus the car electrics and electronics are activated, it is virtually impossible with the known position sensors to determine the exact position of the seat.
- the known magnetic position sensors have a large dependency on the amplitude of the detected magnetic field. This requires that, for example, the Hall sensor must be adjusted very accurately with respect to the flux guide rails. Inaccuracies in the adjustment or adjustments caused by vibrations have a direct negative effect on the measurement results.
- a magnetoresistive linear position sensor which is based on magnetoresistive
- the invention relates to detectors arranged to form at least two Wheatstone bridges having a common center and twisted against each other. With the aid of the two Wheatstone bridges, the direction of the magnetic flux density is deduced from the tapped bridging stresses of the two Wheatstone bridges, which change during the translatory movement of a bar magnet or a magnet arrangement arranged at a certain distance. For a bar magnet magnetized in the direction of translation, sinusoidal flux density results from one pole of the magnet to the other. From the superimposition of the sinusoidal curves measured by the two Wheatstone bridges, a substantially linear relationship can be found between the displacement of the bar magnet and the change in the angle of the vector of the magnetic field
- Flow density can be established.
- the sensor sensitivity depends on the length of the bar magnet or on the total length of the magnet arrangement and on the magnetic pole form.
- the magnet or magnets must be arranged at a very well-defined distance from the arrangement of the two Wheatstone bridges.
- the magnetic field strength must be large enough for the individual magnetoresistive detectors to be in the state of saturation in order to prevent the resistance of the magnetoresistive detectors from changing as a function of the magnitude of the magnetic flux density and changing the measurement results.
- This known linear position sensor comprising a number of magnetoresistive detectors, which are combined to form at least two mutually rotated Wheatstone bridges, and a magnet arrangement is relatively complex and requires a relatively large outlay for the adjustment of the components relative to one another.
- Object of the present invention is therefore to provide a magnetic linear sensor arrangement, which makes it possible to easily and without much electronic effort to cover a traversed along a predetermined path travel and determine the absolute position of the adjustable component.
- the magnetic linear sensor arrangement should not necessarily be forced.
- the requirements for the alignment accuracy should be reduced and the linear sensor arrangement should be largely insensitive to shocks.
- the linear sensor arrangement should work wear-free and have a simple and inexpensive construction.
- the magnetic linear sensor arrangement according to the invention for detecting the position of a component adjustable along a predetermined travel path has a device arranged along the travel path for generating a magnetic field whose polarity changes along the travel path of the component, and at least one galvanomagnetic detector with at least two arranged in the effective range of the magnetic field measurement fields.
- the detector is adjustable relative to the magnetic field along the path of the component.
- the galvanomagnetic detector is a Hall sensor which is designed to measure the magnetic field in at least two directions in one plane or spatially.
- the Hall sensor is preferably equipped with at least two measuring fields. allowed, which are rotated in a plane spanned by them perpendicular to each other.
- the magnetic linear sensor is designed directly for the vectorial evaluation of the magnetic field.
- the two measuring fields span a plane with defined x and y directions.
- the angle of the magnetic flux density results directly from the x and y components of the magnetic field vector detected by the Hall sensor via an arctangent relationship and exhibits a virtually linear dependence on the displacement path.
- the magnetic field strength plays a minor role. At best, it serves to determine whether the Hall sensor is even within the influence of the magnetic field.
- the magnetic field strengths do not have to be as high as in sensors of the prior art since saturation effects of magnetoresistive elements are irrelevant.
- the magnetic linear sensor arrangement has a simple and robust construction. The requirements for the adjustment accuracy are uncritical, since the magnetic field strength has only a small influence on the measurement.
- the means for generating the magnetic field is preferably magnetized perpendicular to the direction of displacement and parallel to the plane of the measuring fields of the Hall sensor, it acts as a quasi-point magnetic field source and spatial expansion influences on the vector of the magnetic flux density are negligible.
- the device for generating the magnetic field along the control path advantageously changes its polarity at least twice, the vector of the magnetic flux density describes 360 °. As a result, a larger displacement is detected.
- the device for generating the magnetic field has at least two permanent magnets, which are arranged at a distance from one another along the adjustment path and have opposite polarities.
- the individual magnets form guasi punctiform magnetic field sources, relative to the sphere of influence of the Hall sensor is adjustable. In this case, the change in the direction of the vector of the magnetic flux density in a range from 0 ° to 180 ° is detected and from this the adjustment path is determined.
- the magnets have a length measured in the direction of displacement, which has a ratio of 2: 1 to 10: 1 for a width measured in its direction of magnetization. This improves the stability against magnetic fields of foreign magnets or of ferromagnetic parts which are in the environment or adhere to the magnets.
- the elongation has an influence on the linearity.
- the low non-linearity can be corrected with look-up tables integrated in the sensor.
- the magnets preferably have a height which typically has a ratio of 1: 5 to 5: 1 to the width.
- the magnetic material plays a subordinate role for the quality of the magnetic linear sensor. Nevertheless, relatively strong magnets are preferred, which consist of materials selected from the group consisting of SmCo, ferrites, NdFeB and plastic-bound variants of these substances. With an arrangement of three individual magnets, each with opposite polarity, the change in the vector of the magnetic flux density in a range from 0 ° to 360 ° can be detected. As a result, a relatively long measuring range of, for example, up to 300 mm is already achieved. For some applications, however, it is desirable to extend the measurement range even further. For this purpose, at least some of the magnets arranged one behind the other along the trajectory have different distances from one another from the plane spanned by the measuring fields of the Hall sensor.
- the z-component of the magnetic flux density vector can also be used for the measurement in order to widen the measuring range.
- the z-component is used to determine the different sets of three magnets and thus the period of rotation of the vector.
- the instantaneous value of the z-component indicates which triple group of magnets or which 360 ° period it is, thereby providing, together with the angle determined from the x and y components, the absolute value of the displacement path.
- the measurement is thereby independent of a zero point determination. Even if the driver's seat was adjusted before the ignition and thus the electronics has been switched on, the position of the seat can be determined exactly with the magnetic linear sensor arrangement.
- An embodiment variant of the magnetic linear sensor arrangement provides, for example, that the magnets arranged one behind the other along the position path are combined in pairs and each have in pairs an increasing distance from the plane spanned by the measuring fields of the Hall sensor.
- the individual magnet pairs are each for one
- Angle measuring range of 0 ° - 180 ° which corresponds to the respective displacement along a pair of magnets (North Pole - South Pole).
- the different z-coordinates of the magnet pairs then serve to differentiate the different magnet pairs and thus provide the extended distance measuring range.
- a further embodiment variant of the magnetic linear sensor arrangement provides that the magnets arranged along the travel path are combined in groups and have alternately counted distances in the positive and negative directions from the plane spanned by the measuring fields of the Hall sensor, which increase or decrease in the direction of displacement.
- there are groups of three individual magnets, each within a triplet of magnets (North Pole - South Pole - North Pole or South Pole - North Pole - South Pole) allow the detection of a full 360 ° period of the vector of the magnetic flux density.
- the z component of the respective triplet then provides the information about the respective 360 ° period or the respective tripartite group. Together with the measured angle of the magnetic flux density vector, the z-component allows the absolute value of the displacement to be determined.
- a number of successive magnets which are arranged at a distance from one another along the control path and are magnetized perpendicularly to the displacement direction, have magnetization directions which in each case enclose an angle of greater than 0 °.
- the magnetization directions of successive magnets are each perpendicular to the displacement direction, but they include different angles with one another and with the plane spanned by the measuring fields of the Hall sensor. This results in different z-components from which the respective period can be deduced.
- a particularly simple variant to change the magnetization directions of successive magnets is to align magnets axially parallel to one another, but to arrange them rotated relative to one another.
- the magnets are arranged along a corresponding arbitrary curve in space for the detection of spatial positions.
- the Hall sensor of the magnetic linear sensor arrangement can describe any curve in space for detecting the adjustment of the component and can also be rotatable with respect to the alignment of its measuring fields.
- magnétique linear sensor arrangement Possible applications for the magnetic linear sensor arrangement according to the invention are general linear sensors, in particular the non-contact detection of the positioning position of components in a vehicle, the displacement measurement of shock absorbers and electric, pneumatic and hydraulic cylinders and the like. Further advantages and features of the invention will become apparent from the following description of schematic representations of exemplary embodiments of the erfmdungsgemassen magnetic linear sensor array. It shows in not to scale representation:
- FIG. 1 shows the schematic structure of a first exemplary embodiment of the erfmdungsgemassen magnetic Lemearsen- soran let with two oppositely polarized permanent magnet and a Hall sensor.
- FIG. 2 shows a variant of the magnetic linear sensor arrangement with three permanent magnets
- FIG. 3 shows a magnetic linear sensor arrangement with an arbitrary number of respectively oppositely polarized permanent magnets
- FIG. 5 shows an embodiment variant of a magnetic linear sensor arrangement with reference to a third space coordinate of mutually offset permanent magnets
- FIG. 6 shows an alternative embodiment variant of a magnetic linear sensor arrangement in analogy to FIG. 5;
- FIG. 7 shows a further embodiment variant of a magnetic linear sensor arrangement with permanent magnets grouped in groups and offset relative to one another with respect to a third spatial coordinate
- FIG. Figure 8 is a variant embodiment of a linear magnetic sensor array with alternating positive and negati ⁇ ven and increasing distance of the permanent magnets from a movement path of a component.
- Linear sensor arrangement with alternately rotated by positive or negative angle to each other permanent magnet
- FIG. 11 shows a magnetic linear sensor arrangement with permanent magnets arranged arbitrarily in space and any space curve which is described during the adjustment of a component by the Hall sensor.
- the magnetic linear sensor arrangement 10 which can be used, for example, in the automotive industry for monitoring a displaceable component, for example a seat or an accelerator pedal, for measuring the distance from shock steamers or from electric, pneumatic and hydraulic cylinders and the like, comprises a galvanomagnetic detector, which a Hall sensor 1 is formed, and at least two permanent magnets 4, 5 with opposite polarities J, which are arranged at a distance a along an adjustment path for a component to be monitored.
- the Hall sensor 1 is usually connected to the adjustable component, while the permanent magnets 4, 5 are arranged stationarily along the trajectory.
- the Hall sensor 1 is designed for the vectorial evaluation of the magnetic field generated by the permanent magnets and has for this purpose at least two Hall measuring feiders 2, 3, which in the x, y, spanned by them.
- the Hall sensor 1 which preferably comprises an integrated evaluation unit, detect the x and y components of the vector of the magnetic flux density of the magnetic field generated by the permanent magnets 4, 5 during an adjustment relative to the permanent magnets 4, 5 and from there via a Arctangent relation determine the angle of the vector of the magnetic flux density.
- the linear sensor arrangement according to the invention represents a use of an angle sensor for a linear measurement.
- the two permanent magnets 4, 5 thereby form quasi point-like magnetic field sources.
- the distance of the Hall measuring fields 2, 3 of the Hall sensor 1 of the permanent magnets 4, 5 amounts to 6 mm, for example.
- the permanent magnets 4, 5 have, for example, a self-remanence of approximately 1 T.
- the tolerance with regard to the positioning accuracy of the galvanomagnetic detector with respect to the permanent magnets is very high and amounts to a few centimeters. Accordingly, the system is robust and insensitive to shattering. From the detected absolute Strong magnetic field can be determined whether the Hall sensor is even in the influence of the magnetic field. Depending on the dimensioning of the magnets 4, 5 and their spacing a, an adjustment range of up to 300 mm, typically up to 100 mm, can be achieved with such a linear sensor arrangement. Typically, the distance a of the adjacent permanent magnets 4, 5 amounts to 50 mm.
- the permanent magnets have a length measured in the direction of displacement x, which has a ratio of 2: 1 to 10: 1 relative to a width (y direction) measured transverse thereto.
- a magnetic linear sensor arrangement 10 for a measuring range of up to 100 mm typically has permanent magnets of a width of 3 mm-5 mm. The length of the magnets is then up to 50 mm. The height of the permanent magnets is less than or equal to their width and ranges from mm to several mm. Because of the better resistance to sterility to magnetic fields of foreign magnets or to interferences by ferromagnetic parts that are in the environment or adhere to the magnet, it is advantageous to stretch the magnets in the longitudinal direction.
- the magnetic material plays only a minor role, but strong magnets are preferred.
- permanent magnets made of SmCo, ferrites or NdFeB are used, which can also be plastic-bonded.
- FIG. 2 shows a magnetic linear sensor arrangement, which is designated overall by the reference numeral 20. It in turn has a Hall sensor 1 with at least two Hall measuring fields 2, 3, which with respect to one of permanent magnets 4, 5, 6 generated magnetic field is adjustable.
- the permanent magnets 4, 5, 6 of adjacent magnets each have opposite polarities J on. For example, while the magnet 4 faces the magnetic north pole to the viewer, the magnet 5 shows its magnetic south pole, and the viewer sees the magnet 6 back to its magnetic north pole.
- the Hall sensor 1 relative to the permanent magnets 4, 5, 6, the vector of the magnetic flux density changes from the north pole to the south pole and back to the north pole, ie it describes a Wmkel Scheme of 360 °.
- Flux density described 360 ° Winkei Symposium is thus converted directly into a linear distance information.
- FIG. 3 shows a magnetic linear sensor arrangement 30, which in turn comprises a Hall sensor 1 and a number of permanent magnets 4, 5, 6, 7 arranged periodically along a travel path T of a component. Although not shown in FIG. 3, adjacent permanent magnets in each case in turn opposite polarities.
- the Hall sensor 1 has been dispensed with the hint of Hall measurement fields.
- the illustration in FIG. 3 shows the linear sensor arrangement 30 in a plan view of the x, y plane spanned by the Hall measurement fields. This is indicated in the illustration by the coordinate system x and z.
- the periodic arrangement of the permanent magnets 4 - 7 generates a periodic magnetic field, when the Hall sensor is passed over it a periodically repeating sensor signal is generated. testifies. After three permanent magnets of different polarity, the vector of magnetic flux density begins a new 360 ° period. So that the individual periods can be kept apart, for example, the successive magnets are rotated against each other. This is indicated in FIG. 4 by the example of the permanent magnets 4 and 5, which have a common axis, but the longitudinal sides of which enclose an angle greater or less than 0 ° with one another (depending on the number convention). As a result of the rotation of adjacent magnets toward one another, the magnets for the Hall sensor have a different magnetization direction, which is used to distinguish the 360 ° periods.
- FIG. 5 An embodiment variant of a magnetic linear sensor arrangement shown in FIG. 5 is provided overall with the reference numeral 50.
- a Hall sensor 1 which is designed for the vekto ⁇ elle evaluation of the detected magnetic field
- Each in the direction of displacement T adjacent permanent magnets have opposite polarities.
- the permanent magnets are, for example, combined in pairs and have, in pairs, different distances c from the x, y plane spanned by the Hall measuring fields of the Hall sensor 1.
- the evaluation of the z-component of the magnetic field generated by the permanent magnets can thus be used to determine the respective 180 ° period. As a result, significantly larger areas can be covered.
- FIG. 6 again shows a magnetic linear sensor arrangement 60 with a Hall sensor 1 and a periodic magnet arrangement 4, 5, 6 and 7. Respectively adjacent magnets along a direction of displacement T have opposite polarities.
- the sensor signal which is detected by the Hall sensor 1 when the magnets 4 - 7 are moved over, is repeated periodically with respect to the angle of the magnetic flux density.
- the magnets which are grouped into groups of three, cover a period of 360 °. A single subsequent magnet 7 with offset in the z-direction allows a distinction of the respective 360 ° period.
- a magnetic linear sensor arrangement shown in FIG. 7 bears the reference numeral 60 as a whole. It has a semiconductor sensor 1 and a number of permanent magnets 4, 5, 6 or 7, 8, 9 or A ⁇ 5 arranged in groups of three along a displacement path T. ⁇ 6 X and 7 ⁇ 8 ⁇ 9 ⁇ . Each of the triplets has a certain distance c1, c2, c3, c4 in the z direction of the magnetic field generated by the magnets.
- a triad of oppositely polarized single magnets allows the detection of a 360 ° region of the vector of magnetic flux density.
- the different distances c1, c2, c3, c4 of the individual triplets from the x, y plane defined by the Hall measuring fields of the Hall sensor 1 permit a differentiation of the respective period and thus an absolute determination of the Hall sensor 1 moved with the monitored component
- a magnetic linear sensor arrangement shown in FIG. 8 is provided with the reference numeral 80 in its entirety.
- It comprises an arrangement of permanent magnets 4, 5, 6, 7, 8, 9, which are arranged on both sides along a trajectory T and each one measured in the direction of the z-component of the magnetic field generated by them from the distance of the Hall measuring fields Hall sensor 1 spanned level, which increases.
- This arrangement also allows the distinction between different measurement periods.
- the individual magnets can also be rotated alternately with respect to the plane spanned by the Hall measurement fields, which is indicated in FIG. 9.
- FIG. 10 shows a magnetic linear sensor arrangement 30 according to the illustration in FIG. 3.
- the adjustment path T tilted in the direction of the z-coordinate indicates that the adjustment does not have to take place exactly in the direction of the arrangement of the permanent magnets.
- FIG. 11 shows a magnetic linear sensor arrangement 110, in which the arrangement of the permanent magnets 4, 5, 6, 7 is not limited to one plane, but rather they are arranged along a path that extends as desired in space.
- the Hall sensor 1 moves relative to the permanent magnets along a track T, which describes a spatial curve.
- the Hall sensor 1 can also be rotated relative to the spatially arranged permanent magnets.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112009000299T DE112009000299A5 (de) | 2008-04-02 | 2009-03-03 | Magnetische Linearsensoranordnung |
US12/893,298 US8531181B2 (en) | 2008-04-02 | 2010-09-29 | Magnetic linear sensor arrangement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5002008 | 2008-04-02 | ||
CH500/08 | 2008-04-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/893,298 Continuation US8531181B2 (en) | 2008-04-02 | 2010-09-29 | Magnetic linear sensor arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009121193A1 true WO2009121193A1 (de) | 2009-10-08 |
Family
ID=39879955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2009/000085 WO2009121193A1 (de) | 2008-04-02 | 2009-03-03 | Magnetische linearsensoranordnung |
Country Status (3)
Country | Link |
---|---|
US (1) | US8531181B2 (de) |
DE (1) | DE112009000299A5 (de) |
WO (1) | WO2009121193A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109951702A (zh) * | 2019-03-29 | 2019-06-28 | 华为技术有限公司 | 位置检测机构、移动终端及位置检测方法 |
WO2019138007A1 (de) * | 2018-01-15 | 2019-07-18 | Continental Teves Ag & Co. Ohg | Verfahren zur wegerfassung, wegerfassungsanordnung und bremssystem |
EP3792587A3 (de) * | 2019-08-21 | 2021-06-16 | SuessCo Sensors GmbH | Verfahren zur messung der ausrichtung zwischen zwei körpern |
Families Citing this family (10)
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DE102010021158A1 (de) * | 2010-05-21 | 2011-11-24 | Schaeffler Technologies Gmbh & Co. Kg | Wälzlager mit integriertem Generator und Verfahren zum Energiemanagement eines solchen Wälzlagers |
DE102011100440A1 (de) * | 2011-05-04 | 2012-11-08 | Polycontact Ag | Positionssensor |
DE102013000016A1 (de) * | 2013-01-02 | 2014-07-03 | Meas Deutschland Gmbh | Messvorrichtung zum Messen magnetischer Eigenschaften der Umgebung der Messvorrichtung |
US9372064B2 (en) * | 2013-03-14 | 2016-06-21 | Sensata Technologies, Inc. | Method and apparatus for sensing positions of a plurality of magnets |
KR102125558B1 (ko) * | 2013-08-19 | 2020-06-22 | 삼성전자주식회사 | 카메라 모듈, 이에 사용되는 위치 검출 장치 및 위치 검출 방법 |
DE102015205947B4 (de) | 2015-04-01 | 2020-12-17 | Volkswagen Aktiengesellschaft | Vorrichtung zur Bestimmung der Sitzlängeneinstellung eines Kraftfahrzeugsitzes |
WO2017073151A1 (ja) * | 2015-10-28 | 2017-05-04 | アルプス電気株式会社 | 位置検知装置 |
US10501201B2 (en) | 2017-03-27 | 2019-12-10 | Hamilton Sundstrand Corporation | Aerodynamic control surface movement monitoring system for aircraft |
DE112020006466T5 (de) * | 2020-03-10 | 2022-12-22 | Mitsubishi Electric Corporation | Magnetischer Linearpositionsdetektor |
CN118424341A (zh) * | 2020-07-31 | 2024-08-02 | 核心光电有限公司 | 位置感测单元 |
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US20050033529A1 (en) * | 2003-08-06 | 2005-02-10 | Martin Specht | Device for measuring force on a seat belt |
WO2005078395A1 (en) * | 2004-02-04 | 2005-08-25 | Honeywell International Inc | Balanced magnetic linear displacement sensor |
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JPS5531929A (en) * | 1978-08-30 | 1980-03-06 | Agency Of Ind Science & Technol | Displacement oscillation sensor |
US6753680B2 (en) * | 2000-11-29 | 2004-06-22 | Ronald J. Wolf | Position sensor |
DE10108732A1 (de) * | 2001-02-23 | 2002-09-05 | Philips Corp Intellectual Pty | Vorrichtung mit einem magnetischen Positionssensor |
US20040017187A1 (en) * | 2002-07-24 | 2004-01-29 | Van Ostrand Kent E. | Magnetoresistive linear position sensor |
FR2853409B1 (fr) * | 2003-04-07 | 2005-08-26 | Electricfil | Capteur magnetique sans contact pour determiner la position lineaire d'un mobile |
-
2009
- 2009-03-03 DE DE112009000299T patent/DE112009000299A5/de not_active Withdrawn
- 2009-03-03 WO PCT/CH2009/000085 patent/WO2009121193A1/de active Application Filing
-
2010
- 2010-09-29 US US12/893,298 patent/US8531181B2/en not_active Expired - Fee Related
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US20050033529A1 (en) * | 2003-08-06 | 2005-02-10 | Martin Specht | Device for measuring force on a seat belt |
WO2005078395A1 (en) * | 2004-02-04 | 2005-08-25 | Honeywell International Inc | Balanced magnetic linear displacement sensor |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019138007A1 (de) * | 2018-01-15 | 2019-07-18 | Continental Teves Ag & Co. Ohg | Verfahren zur wegerfassung, wegerfassungsanordnung und bremssystem |
US11333482B2 (en) | 2018-01-15 | 2022-05-17 | Continental Teves Ag & Co. Ohg | Method for travel-sensing, travel-sensing arrangement and brake system |
CN109951702A (zh) * | 2019-03-29 | 2019-06-28 | 华为技术有限公司 | 位置检测机构、移动终端及位置检测方法 |
US11877047B2 (en) | 2019-03-29 | 2024-01-16 | Honor Device Co., Ltd. | Electronic device and method for determining a position state of a camera |
CN109951702B (zh) * | 2019-03-29 | 2024-04-05 | 荣耀终端有限公司 | 位置检测机构、移动终端及位置检测方法 |
EP3792587A3 (de) * | 2019-08-21 | 2021-06-16 | SuessCo Sensors GmbH | Verfahren zur messung der ausrichtung zwischen zwei körpern |
Also Published As
Publication number | Publication date |
---|---|
US20110043193A1 (en) | 2011-02-24 |
DE112009000299A5 (de) | 2011-03-03 |
US8531181B2 (en) | 2013-09-10 |
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