DE102005035571A1 - Steering angle measuring arrangement for motor vehicle, has set of permanent magnets that are movable relative to sensor consisting of induction coil, where coil is supplied with testing current and test signals are induced in another coil - Google Patents

Steering angle measuring arrangement for motor vehicle, has set of permanent magnets that are movable relative to sensor consisting of induction coil, where coil is supplied with testing current and test signals are induced in another coil Download PDF

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DE102005035571A1
DE102005035571A1 DE102005035571A DE102005035571A DE102005035571A1 DE 102005035571 A1 DE102005035571 A1 DE 102005035571A1 DE 102005035571 A DE102005035571 A DE 102005035571A DE 102005035571 A DE102005035571 A DE 102005035571A DE 102005035571 A1 DE102005035571 A1 DE 102005035571A1
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measuring arrangement
induction coil
coil
arrangement according
sensor
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DE102005035571A
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Inventor
Christian Schirp
Stefan Garneyer
Oliver Maier
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Leopold Kostal GmbH and Co KG
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Leopold Kostal GmbH and Co KG
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/4815—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals using a pulse wire sensor, e.g. Wiegand wire
    • 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
    • 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
    • G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains

Abstract

The arrangement has a wiegand sensor that consists of an induction coil (1) that contains a wiegand wire as core. A set of permanent magnets (5) is arranged, where the permanent magnets are movable relative to the sensor. Another induction coil (3) is supplied with a testing current and test signals are induced in the former induction coil. A counting device (6) is assigned to the former induction coil. An independent claim is also included for a wiegand sensor that is provided with a measuring arrangement.

Description

Die vorliegende Erfindung betrifft eine Meßanordnung mit einem Wiegandsensor, bestehend aus einer ersten Induktionsspule, welche einen Wieganddraht als Kern enthält, und mit mindestens einem relativ zum Wiegandsensor beweglich angeordneten Magneten.The The present invention relates to a measuring arrangement with a weighing sensor, consisting of a first induction coil, which is a Wiegand wire as a core, and at least one magnet movably arranged relative to the weighing sensor.

Aus der deutschen Patentschrift DE 102 59 223 B3 ist ein Positionsdetektor bekannt, bei der das Umklappen der magnetischen Domänen in einem Wieganddraht zur Zählung von Umdrehungen und zur Feststellung einer Umdrehungsrichtung genutzt wird. Die Anordnung weist eine Induktionsspule sowie ein weiteres Sensorelement auf, welches eine zweite Induktionsspule oder ein Hallsensor zur Drehrichtungserkennung sein kann.From the German patent DE 102 59 223 B3 For example, a position detector is known in which the folding of the magnetic domains in a Wiegand wire is used to count revolutions and to detect a direction of rotation. The arrangement has an induction coil and a further sensor element, which may be a second induction coil or a Hall sensor for detecting the direction of rotation.

Bei Anwendung eines solchen Sensors in einer sicherheitskritischen Applikationen, wie z. B. zur Lenkwinkelmessung in einem Kraftfahrzeug, ist die Diagnosefähigkeit ein wichtiges Glied in der Funktionskette. Es sollte dabei möglichst die gesamte Funktion des Wiegandsensors in der Applikation prüfbar sein. Ein möglicher Fehler ist beispielsweise, daß Umdrehungen nicht mitgezählt werden, wenn der elektrische Kontakt zu der Meßspule abreißt.at Application of such a sensor in a safety-critical application, such as B. for steering angle measurement in a motor vehicle, the diagnostic capability an important link in the functional chain. It should be as possible the entire function of the weighing sensor in the application can be tested. A possible Error is, for example, that turns not counted when the electrical contact to the measuring coil breaks off.

Es stellte sich daher die Aufgabe, eine Meßanordnung mit einem Wiegandsensor zu schaffen, der auf einfache und kostengünstige Weise diagnosefähig ausgebildet ist.It Therefore, the task was a measuring arrangement with a Wiegandsensor to create that designed to diagnose capable in a simple and inexpensive manner is.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine zweite Induktionsspule vorgesehen ist, die mit einem Prüfstrom beaufschlagbar ist und die Prüfsignale in der ersten Induktionsspule induziert.These Task is inventively characterized solved, that one second induction coil is provided, which can be acted upon by a test current is and the test signals induced in the first induction coil.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen sowie aus der nachfolgenden Zeichnungsbeschreibung.advantageous Refinements and developments of the invention will become apparent the dependent claims as well as from the following description of the drawing.

Es zeigenIt demonstrate

1 eine Skizze zum Funktionsprinzip einer erfindungsgemäßen Meßanordnung, 1 a sketch of the functional principle of a measuring arrangement according to the invention,

2 eine Skizze zu einem Anwendungsbeispiel einer erfindungsgemäßen Meßanordnung. 2 a sketch of an application example of a measuring arrangement according to the invention.

Ein Wieganddraht ist ein ferromagnetischer Draht mit einem weichmagnetischen Kern, der von einem hartmagnetischen Mantel umschlossen ist und bei dem Kern und Mantel eine entgegengesetzte Magnetisierung aufweisen. Durch ein äußeres Magnetfeld läßt sich die Magnetisierung des Kerns umkehren. Diese sprunghaft erfolgende Änderung kann durch eine Induktionsspule sehr gut nachgewiesen werden.One Wiegand wire is a ferromagnetic wire with a soft magnetic Core, which is enclosed by a hard magnetic sheath and at the core and cladding have opposite magnetization. Through an external magnetic field let yourself reverse the magnetization of the nucleus. This sudden change can be detected very well by an induction coil.

Die 1 skizziert eine Meßanordnung mit einer Meßspule (1), deren Windungen auf einem Wieganddraht (2) aufgebracht sind. Da der Wieganddraht (2) Änderungen eines äußeren Magnetfeldes registriert, kann durch einen beweglich angeordneten Permanentmagneten (5) ein Bewegungssensor oder ein Positionssensor realisiert werden. Der Wieganddraht ändert bei Über- oder Unterschreiten einer magnetischen Schwellwertfeldstärke die Magnetisierungsrichtung seines Kerns. An den Anschlußleitungen der Meßspule (1) kann eine induzierte Meßspannung (Umess_w) abgenommen werden, die von der Bewegung des Permanentmagneten (5) relativ zum Wieganddraht (2) bestimmt ist. Da diese Meßspannung (Umess_w) einen impulsförmigen Verlauf aufweist, kann eine Bewegungserfassung zweckmäßigerweise durch eine Zähleinrichtung (6) erfolgen.The 1 outlines a measuring arrangement with a measuring coil ( 1 ) whose turns on a Wiegand wire ( 2 ) are applied. Because the Wiegand wire ( 2 ) Registered changes of an external magnetic field, by a movably arranged permanent magnet ( 5 ) a motion sensor or a position sensor can be realized. The Wiegand wire changes the magnetization direction of its core when exceeding or falling below a magnetic threshold field strength. At the leads of the measuring coil ( 1 ), an induced measuring voltage (Umess_w) can be taken from the movement of the permanent magnet ( 5 ) relative to the Wiegand wire ( 2 ) is determined. Since this measuring voltage (Umess_w) has a pulse-shaped course, a movement detection can be expediently carried out by a counter ( 6 ) respectively.

Den Anspruch der Diagnosefähigkeit kann man erfüllen, indem man entweder in unmittelbarer Nähe oder sogar auf dem Wicklungskörper der Meßspule (1) mit dem Wieganddraht-Kern (2) eine Prüfspule (3) vorsieht. Durch Einbringen eines, vorzugsweise mit einem über die Zeit relativ gering ansteigenden Prüfstromes (Idiag) in die Prüfspule (3) wird ein Magnetfeld erzeugt, welches die Zündfeldstärke des Wieganddrahtes (2) überschreitet und damit das Umklappen der Domänen erzwingt. Der daraus in der Meßspule (1) entstehende Meßspannungsimpuls (Umess_w) läßt die Zähleinrichtung (6) um einen Schritt weiterzählen.The requirement of the diagnostic capability can be fulfilled by either in the immediate vicinity or even on the winding body of the measuring coil ( 1 ) with the Wiegand wire core ( 2 ) a test coil ( 3 ). By introducing a test current (Idiag) into the test coil, preferably with a test current (Idiag) that rises relatively little over time ( 3 ) a magnetic field is generated, which determines the ignition field strength of the Wiegand wire ( 2 ) and thus forces the folding of the domains. The resulting in the measuring coil ( 1 ) resulting Meßspannungsimpuls (Umess_w) leaves the counter ( 6 ) by one step.

Alternativ kann auch vorgesehen werden, die Prüfspule (3) mit einem impulsförmigen Prüfstrom (Idiag) zu beaufschlagen, welcher jeweils einen Impuls in der Meßspule (1) induziert, der dem Impuls entspricht, den das Umklappen der Domänen im Wieganddraht (2) erzeugt und der somit von der Zähleinrichtung (6) registriert wird. Dieser Impuls kann damit zur Eigendiagnose ausgewertet werden.Alternatively, it can also be provided that the test coil ( 3 ) with a pulse-shaped test current (Idiag), which in each case one pulse in the measuring coil ( 1 ), which corresponds to the momentum that the folding of the domains in the Wiegand wire ( 2 ) and thus by the counter ( 6 ) is registered. This pulse can thus be evaluated for self-diagnosis.

Vorteilhaft, wenn nicht sogar wesentlich für eine ungestörte Überprüfung des Wiegandsensors ist, während des Prüfvorgangs die aktuelle Position des Permanentmagneten (5) zu berücksichtigen. Dies kann vorteilhaft durch einen Hallsensor (4) geschehen, der überprüft, ob sich der Permanentmagnet (5) in der Nähe des Wiegandsensors bzw. der Prüfspule (3) befindet, so daß die Prüfspule (3) nur dann mit einem Prüfstrom (Idiag) beaufschlagt wird, wenn der Permanentmagnet (5) ausreichend weit entfernt ist Vorteilhaft ist auch, den Hallsensor (4) in unmittelbarer Nähe von Prüfspule (3) und Wiegandsensor anzuordnen. Aufgrund der räumlich engen Anordnung dieser Elemente kann gleichzeitig mit dem Wiegandsensor auch der Hallsensor (4) durch die Prüfspule (3) überprüft werden.Advantageous, if not essential for an undisturbed check of the Wiegandsensors, during the testing process, the current position of the permanent magnet ( 5 ). This can advantageously by a Hall sensor ( 4 ), which checks whether the permanent magnet ( 5 ) in the vicinity of the Wiegandsensors or the test coil ( 3 ), so that the test coil ( 3 ) is only supplied with a test current (Idiag) when the permanent magnet ( 5 ) far enough It is also advantageous to use the Hall sensor ( 4 ) in the immediate vicinity of the test coil ( 3 ) and Wiegandsensor to arrange. Due to the spatially close arrangement of these elements, the Hall sensor can also be used simultaneously with the weighing sensor ( 4 ) through the test coil ( 3 ).

Besonders vorteilhaft einsetzbar ist der beschriebene Wiegandsensor in Verbindung mit einem höher auflösenden Meßsystem. Eine mögliche Ausführungsform eines optischen Winkelsensors, beispielsweise für einen Lenkwinkelsensor in einem Kraftfahrzeug, ist in der 2 skizziert. Eine auf einer Welle (11) angeordnete Codierscheibe (10) ist mit einer optischen Winkelcodierung (12) versehen, die von einem optischen Abtastsystem (12) erfaßt werden kann. Die optische Winkelcodierung (12), von der nur ein Winkelausschnitt in der Figur dargestellt ist, erstreckt sich dabei vorzugsweise entlang des gesamten Umfangs der Codierscheibe (10).Particularly advantageous is the Wiegandsensor described in connection with a higher resolution measuring system. A possible embodiment of an optical angle sensor, for example for a steering angle sensor in a motor vehicle, is in the 2 outlined. One on a wave ( 11 ) arranged coding disc ( 10 ) is with an optical angle coding ( 12 ) provided by an optical scanning system ( 12 ) can be detected. The optical angle coding ( 12 ), of which only an angular section is shown in the figure, preferably extends along the entire circumference of the coding disc ( 10 ).

Um auch einen Drehwinkel oberhalb von 360° sicher zu erfassen, sind auf der Codierscheibe (10) mindestens zwei Permanentmagnete (14) angeordnet, deren Drehbewegung an einem Wiegandsensor (15) vorbei verläuft und dabei von diesem Wiegandsensor (15) registriert wird. Eine mit dem Wiegandsensor (15) verbundene Zähleinrichtung bestimmt hierbei die Anzahl der vollständigen Umdrehungen der Codierscheibe (10), während das optische Abtastsystem (12) einen 360°-Winkelbereich mit hoher Genauigkeit auflöst.In order to reliably detect a rotation angle above 360 °, on the coding disc ( 10 ) at least two permanent magnets ( 14 ) whose rotational movement on a Wiegandsensor ( 15 ) passes by and from this Wiegandsensor ( 15 ) is registered. One with the Wiegandsensor ( 15 ) connected counter determines the number of complete revolutions of the encoder ( 10 ) while the optical scanning system ( 12 ) resolves a 360 ° angle range with high accuracy.

Der Wiegandsensor (15) ist auf erfindungsgemäße Weise diagnosefähig ausgeführt, was bedeutet, daß er zumindest eine mit einem Prüfstrom beaufschlagbare, in der 2 nicht dargestellte Prüfspule aufweist.The weighing sensor ( 15 ) is carried out in a diagnostic manner according to the invention, which means that it can be acted upon at least one with a test current in the 2 Has not shown test coil.

Auch hier ist es zweckmäßig, wenn eine Überprüfung des Wiegandsensors (15) nur erfolgt, solange nicht der Magnet (14) bzw. einer der Magneten sich in dessen Nähe befindet. Vor der Beaufschlagung der Prüfspule mit dem Prüfstrom ist daher jeweils die Lage des/der Permanentmagnete(n) zu bestimmen. Vorteilhaft bei dieser Anordnung ist, daß zur Lagebestimmung des/der Permanentmagneten (14) kein zusätzlicher magnetempfindlicher Sensor, wie beispielsweise der Hallsensor in der 1, benötigt wird, sondern daß die durch das optische Abtastsystem (12) bestimmte Lage der Codierscheibe (10) innerhalb des 360°-Winkelbereichs zur Lagebestimmung des/der Permanentmagneten (14) verwendet werden kann.Again, it is useful if a check of the Wiegandsensors ( 15 ) only takes place, as long as the magnet ( 14 ) or one of the magnets is located in the vicinity. Before applying the test coil to the test current, the position of the permanent magnet (s) must therefore be determined. An advantage of this arrangement is that for determining the position of the permanent magnet (s) ( 14 ) no additional magnetosensitive sensor, such as the Hall sensor in the 1 , but that through the optical scanning system ( 12 ) certain position of the coding disc ( 10 ) within the 360 ° angle range for determining the position of the permanent magnet (s) ( 14 ) can be used.

11
erste Induktionsspule (Meßspule)first Induction coil (measuring coil)
22
WieganddrahtWiegand
33
zweite Induktionsspule (Prüfspule)second Induction coil (test coil)
44
HallsensorHall sensor
55
(Permanent)magnet(Permanent) magnet
66
Zähleinrichtungcounting
1010
Codierscheibeencoder
1111
Wellewave
1212
Abtastsystemscanning
1313
Winkelcodierungangle coding
1414
Permanentmagnet(e)Permanent magnet (s)
1515
WiegandsensorWiegand
IdiagIdiag
PrüfstromTest current
Umess_wUmess_w
Meßspannung(simpuls)Measuring voltage (simpuls)
Umess_hUmess_h
Meßspannungmeasuring voltage

Claims (14)

Meßanordnung mit einem Wiegandsensor, bestehend aus einer ersten Induktionsspule (1), welche einen Wieganddraht (2) als Kern enthält, und mit mindestens einen relativ zum Wiegandsensor (1, 2; 15) beweglich angeordneten Magneten (5, 14), dadurch gekennzeichnet, daß eine zweite Induktionsspule (3) vorgesehen ist, die mit einem Prüfstrom (Idiag) beaufschlagbar ist, und die Prüfsignale in der ersten Induktionsspule (1) induziert.Measuring arrangement with a Wiegandsensor, consisting of a first induction coil ( 1 ), which is a Wiegand wire ( 2 ) as a core, and at least one relative to the Wiegandsensor ( 1 . 2 ; 15 ) movably arranged magnets ( 5 . 14 ), characterized in that a second induction coil ( 3 ) is provided, which is acted upon by a test current (Idiag), and the test signals in the first induction coil ( 1 ). Meßanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Induktionsspule (3) über den Prüfzeitraum mit einem konstanten Prüfstrom (Idiag) beaufschlagt ist.Measuring arrangement according to claim 1, characterized in that the second induction coil ( 3 ) is subjected to a constant test current (Idiag) over the test period. Meßanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Induktionsspule (3) über den Prüfzeitraum mit einem impulsförmigen Prüfstrom (Idiag) beaufschlagt ist.Measuring arrangement according to claim 1, characterized in that the second induction coil ( 3 ) is subjected to a pulsed test current (Idiag) over the test period. Meßanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der ersten Induktionsspule (1) eine Zähleinrichtung (6) zugeordnet ist.Measuring arrangement according to Claim 1, characterized in that the first induction coil ( 1 ) a counting device ( 6 ) assigned. Wiegandsensor nach Anspruch 3 und 4, dadurch gekennzeichnet, daß die Prüfsignale von der Zähleinrichtung (6) erfaßbare Zählereignisse bewirken.Wiegandsensor according to claim 3 and 4, characterized in that the test signals from the counter ( 6 ) cause detectable count events. Wiegandsensor nach Anspruch 1, dadurch gekennzeichnet, daß der Wiegandsensor einen Drehsensor ausbildet.Wiegandsensor according to claim 1, characterized that the Wiegandsensor forms a rotary sensor. Meßanordnung nach Anspruch 6, dadurch gekennzeichnet, daß der Drehsensor Umdrehungsanzahl und Umdrehungsrichtung einer Welle (11) erfaßt.Measuring arrangement according to Claim 6, characterized in that the rotation sensor measures the number of revolutions and the direction of rotation of a shaft ( 11 ) detected. Meßanordnung nach Anspruch 7, dadurch gekennzeichnet, daß der Drehsensor Bestandteil eines Lenkwinkelsensors in einem Kraftfahrzeug ist.Measuring arrangement according to claim 7, characterized in that the rotary sensor is part of a Steering angle sensor in a motor vehicle. Meßanordnung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß die Meßanordnung mindestens einen weiteren Sensor (4, 12) zur Erfassung von Dreh- oder Linearbewegungen aufweist.Measuring arrangement according to one of the preceding claims, characterized in that the measuring arrangement has at least one further sensor ( 4 . 12 ) for detecting rotational or linear movements. Meßanordnung nach Anspruch 9, dadurch gekennzeichnet, daß zu der Meßanordnung mindestens einen weiterer Sensor in Form eines Hallsensors (4) gehört.Measuring arrangement according to Claim 9, characterized in that at least one further sensor in the form of a Hall sensor ( 4 ) belongs. Wiegandsensor nach einem der Anspruch 10, dadurch gekennzeichnet, daß der Prüfstrom (Idiag) durch die zweite Induktionsspule (3) in dem Hallsensor (4) auswertbare Prüfsignale erzeugt.Wiegandsensor according to one of claim 10, characterized in that the test current (Idiag) through the second induction coil ( 3 ) in the Hall sensor ( 4 ) generates evaluable test signals. Meßanordnung nach Anspruch 9, dadurch gekennzeichnet, daß ein weiterer Sensor (12) für ein optisches Meßverfahren vorgesehen.Measuring arrangement according to claim 9, characterized in that a further sensor ( 12 ) is provided for an optical measuring method. Meßanordnung nach Anspruch 1, dadurch gekennzeichnet, daß der Magnet (5, 14) ein Permanentmagnet ist.Measuring arrangement according to Claim 1, characterized in that the magnet ( 5 . 14 ) is a permanent magnet. Meßanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die erste und die zweite Induktionsspule (1, 3) als Kern beide den gleichen Wieganddraht (2) aufweisen.Measuring arrangement according to claim 1, characterized in that the first and the second induction coil ( 1 . 3 ) as core both the same Wiegand wire ( 2 ) exhibit.
DE102005035571A 2005-07-29 2005-07-29 Steering angle measuring arrangement for motor vehicle, has set of permanent magnets that are movable relative to sensor consisting of induction coil, where coil is supplied with testing current and test signals are induced in another coil Withdrawn DE102005035571A1 (en)

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US10969214B2 (en) 2013-12-31 2021-04-06 Joral Llc Position sensor with Wiegand wire, position magnet(s) and reset magnet
DE102015106188B4 (en) 2015-04-22 2023-06-29 Fraba B.V. System for inspecting impulse wire quality and method for inspecting impulse wire quality

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DE102011002179A1 (en) * 2011-04-19 2012-10-25 Walter Mehnert Method and arrangement for synchronizing a segment counter with a fine position sensor
DE102011002179B4 (en) 2011-04-19 2023-10-12 Avago Technologies International Sales Pte. Limited Method and arrangement for synchronizing a segment counter with a fine position sensor
US9631948B2 (en) 2012-04-15 2017-04-25 Avago Technologies General Ip (Singapore) Pte. Ltd. Method and arrangement for synchronizing a segment counter with a fine position sensor
US9803998B1 (en) 2013-12-31 2017-10-31 Joral Llc Absolute position sensor with fine resolution
US10969214B2 (en) 2013-12-31 2021-04-06 Joral Llc Position sensor with Wiegand wire, position magnet(s) and reset magnet
DE102015106188B4 (en) 2015-04-22 2023-06-29 Fraba B.V. System for inspecting impulse wire quality and method for inspecting impulse wire quality

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