DE19814758A1 - Number of revolutions and direction of rotation detecting device - Google Patents

Number of revolutions and direction of rotation detecting device

Info

Publication number
DE19814758A1
DE19814758A1 DE19814758A DE19814758A DE19814758A1 DE 19814758 A1 DE19814758 A1 DE 19814758A1 DE 19814758 A DE19814758 A DE 19814758A DE 19814758 A DE19814758 A DE 19814758A DE 19814758 A1 DE19814758 A1 DE 19814758A1
Authority
DE
Germany
Prior art keywords
sensor
rotation
signal
speed
signal generator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19814758A
Other languages
German (de)
Inventor
Rainer Gengenbach
Udo Gillich
Guenther Horsak
Tilo Marschall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE19814758A priority Critical patent/DE19814758A1/en
Publication of DE19814758A1 publication Critical patent/DE19814758A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01P3/487—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 delivered by rotating magnets
    • 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
    • G01D5/147—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 movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
    • 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
    • G01D5/245—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 using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • 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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
    • G01D2205/77—Specific profiles
    • G01D2205/771—Toothed profiles
    • G01D2205/772—Sawtooth profiles

Abstract

The device includes a stationary, analog sensor (1), and a rotating signal generator (2) which moves with its evenly subdivided contour (4) in different distances past the sensor, and which produces a signal form (11) with each contour section (5). An evaluation arrangement (3) evaluates the produced signals of the sensor, and the signal generator produces an asymmetrical signal form, whose flank rise is evaluated to determine the number of revolutions and the rotation direction (8, 9).

Description

Die Erfindung betrifft eine Vorrichtung zum Erfassen einer Drehzahl nach dem Oberbegriff von Anspruch 1.The invention relates to a device for detecting a speed according to the preamble of claim 1.

In der Antriebstechnik ist es häufig erforderlich, sowohl die Drehzahl als auch die zugehörige Drehrichtung eines rotierenden Bauteils zu erfassen. Hierzu wird eine Vorrichtung verwendet, die einen Signalgeber, zwei Sensoren und eine elektronische Auswerteeinheit umfaßt. Der Signal­ geber ist in der Regel eine Zahnscheibe, deren Zähne im Querschnitt ein zur Zahnmittellinie symmetrisches Profil (z. B. Rechteck oder Evolventenprofil) haben und mit einem geringen Abstand an den Sensoren vorbei bewegt werden. Der unterschiedliche Abstand des Signalgebers im Bereich des Zahnkopfes und im Bereich der Zahnlücken von den Sensoren erzeugt als Signalform einen rechteckigen Spannungsimpuls, der bei einer Umdrehung entsprechend der gleichmäßig über den Umfang verteilten Zähnezahl einen entsprechenden Si­ gnalverlauf ergibt.In drive technology, it is often necessary both the speed and the associated direction of rotation of a rotating component. For this, a Device uses a signal generator, two sensors and comprises an electronic evaluation unit. The signal is usually a toothed washer, the teeth in the Cross section of a profile symmetrical to the tooth center line (e.g. rectangle or involute profile) and with a be moved close to the sensors. Of the different distance of the signal generator in the area of Tooth head and in the area of the tooth gaps from the sensors generates a rectangular voltage pulse as the waveform, which at a turn corresponding to the evenly above the circumference distributed number of teeth a corresponding Si gnal history results.

Um die Drehrichtung zu erfassen, sind zwei digitale Sensoren erforderlich, die um eine halbe Zahnbreite in Um­ fangsrichtung versetzt montiert sind. Erfaßt der erste Sen­ sor z. B. eine positive Flanke, d. h. wenn sein Signal von "low" auf "high" wechselt, fragt die Auswerteeinheit den Zustand des Signals am zweiten Sensor ab. Ist dieses Signal "high", wird die Drehrichtung z. B. als positiv oder links drehend und im entgegengesetzten Fall als negativ oder rechts drehend interpretiert. Gleichzeitig wird die Anzahl der Impulse eines Sensors pro Zeiteinheit gezählt und als Drehwinkel oder Drehzahl pro Zeiteinheit ausgegeben. To record the direction of rotation, there are two digital ones Sensors required that are by half a tooth width in um traverse direction are mounted offset. The first sen sor z. B. a positive edge, d. H. when his signal from "low" to "high" changes, the evaluation unit asks State of the signal at the second sensor. Is this signal "high", the direction of rotation z. B. as positive or left rotating and in the opposite case as negative or interpreted to the right. At the same time, the number the pulses of a sensor counted per unit of time and as Angle of rotation or speed output per unit of time.  

Der Meßwert muß ständig aktualisiert werden, wozu ei­ nige Zählimpulse notwendig sind. Daraus folgt, daß sich die Aktualisierungsrate für die Drehzahl- und Drehrichtungser­ fassung reziprok zur Drehzahl verhält, d. h. je geringer die Drehzahl ist, desto länger ist die Zeit, um einen neuen Meßwert zu erhalten. Deshalb können Drehzahlen in der Nähe von null Umdrehungen pro Minute, die bei einem kriechenden Fahrzeug auftreten, praktisch nicht mehr erfaßt werden. Dadurch wird die Regelung des Antriebs erschwert.The measured value must be updated continuously, for which purpose few counts are necessary. It follows that the Update rate for the speed and direction of rotation version reciprocal to the speed, d. H. the less the speed is, the longer the time to get a new one To get measured value. Therefore, speeds can be close of zero revolutions per minute, with a creeping Vehicle occur, can practically no longer be detected. This makes it difficult to control the drive.

Der Erfindung liegt die Aufgabe zugrunde, mit nur ei­ nem Sensor die Drehzahl und die Drehrichtung zu erfassen und eine konstante Aktualisierungsrate unabhängig von der Drehzahl zu erhalten. Sie wird gemäß der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Weitere Ausgestaltun­ gen ergeben sich aus den Unteransprüchen.The invention is based, with only egg nem sensor to record the speed and direction of rotation and a constant update rate regardless of the Obtain speed. It is according to the invention solved the features of claim 1. Further designs conditions result from the subclaims.

Nach der Erfindung wird ein Signalgeber verwendet, der eine asymmetrische Signalform erzeugt, deren Flankenstei­ gung ausgewertet wird, um die Drehrichtung und/oder die Drehzahl zu erfassen. Hierzu eignet sich besonders gut als Sensor ein analoger elektromagnetischer Wandler, z. B. Halleffekt, und als Signalgeber ein Polrad mit Zähnen, de­ ren Flanken asymmetrisch zur Zahnmittellinie verlaufen. Je nach Drehrichtung erzeugen die Flanken eine Signalform mit einer positiven oder negativen Flankensteigung, und zwar gegensinnig. Die flachere Flanke erzeugt also in der einen Drehrichtung eine geringere positive Flankensteigung, wäh­ rend in der Gegendrehrichtung die dem Betrag nach gleiche Flankensteigung negativ ist. Die steilere, kürzere Flanke verhält sich gerade umgekehrt. Somit kann man der positiven bzw. negativen Flankensteigung jeweils eine Drehrichtung zuordnen, da sich beim Drehrichtungswechsel bei einer dem Betrag nach gleichen Flankensteigung das Vorzeichen wech­ selt.According to the invention, a signal generator is used which generates an asymmetrical waveform, the flank of which is evaluated to determine the direction of rotation and / or the Speed. This is particularly suitable as Sensor an analog electromagnetic converter, e.g. B. Hall effect, and as a signal generator a magnet wheel with teeth, de its flanks are asymmetrical to the tooth center line. Each according to the direction of rotation, the flanks also generate a signal shape a positive or negative slope, namely opposite. So the flatter flank creates one Direction of rotation a lower positive slope, weh in the opposite direction of rotation the same in amount Slope is negative. The steeper, shorter flank behaves the other way round. So you can see the positive or negative slope in each case one direction of rotation assign, because when changing the direction of rotation at a  Change the sign after the same slope rare.

Mit dem Sensor kann nach der Erfindung sowohl die An­ zahl der von den Zähnen erzeugten Signal formen pro Zeitein­ heit gezählt werden, als auch die Veränderung des Signal­ wertes an einer Zahnflanke erfaßt werden. Da die Signal­ wertdifferenz einem Drehwinkel entspricht, kann daraus ein Drehwinkel bzw. eine Drehzahl pro Zeiteinheit abgeleitet werden. Dies kann besonders genau und zuverlässig erfolgen, wenn zum Auswerten des Signalverlaufs nur Anteile der Si­ gnalform mit einer konstanten Flankensteigung herangezogen werden.With the sensor according to the invention, both the An number of waveforms generated by the teeth per time be counted as well as the change in the signal values are recorded on a tooth flank. Because the signal value difference corresponds to an angle of rotation Rotation angle or a speed derived per unit of time become. This can be done particularly accurately and reliably, if only parts of the Si gnal shape with a constant slope become.

Weitere Vorteile ergeben sich aus der folgenden Zeich­ nungsbeschreibung. In der Zeichnung ist ein Ausführungsbei­ spiel der Erfindung dargestellt. Die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusam­ menfassen.Further advantages result from the following drawing description. In the drawing is an execution example shown game of the invention. The description and the Claims contain numerous features in combination. Of the Those skilled in the art will expediently also individually consider and together to useful further combinations grasp.

Es zeigt:It shows:

Fig. 1 eine schematisch dargestellte, erfindungsge­ mäße Vorrichtung und Fig. 1 is a schematically illustrated, fiction, contemporary device and

Fig. 2 einen Verlauf eines erzeugten Spannungs­ signals über einen Drehwinkel. Fig. 2 shows a curve of a generated voltage signal over an angle of rotation.

Die in Fig. 1 dargestellte Vorrichtung umfaßt einen Sensor 1, der zweckmäßigerweise als analoger Halleffektsen­ sor ausgebildet ist, einen Signalgeber 2, nämlich ein Pol­ rad mit Zähnen 5, und eine elektronische Auswerteeinrich­ tung 3, die über eine Signalleitung mit dem Sensor 1 ver­ bunden ist. In der Regel hat die Auswerteeinrichtung 3 ein Display zur analogen und/oder digitalen Anzeige der erfaß­ ten und ausgewerteten Größen.The apparatus shown in Fig. 1 comprises a sensor 1 , which is expediently designed as an analog Hall effect sensor, a signal transmitter 2 , namely a pole wheel with teeth 5 , and an electronic Auswerteinrich device 3 , which connected to the sensor 1 via a signal line is. In general, the evaluation device 3 has a display for analog and / or digital display of the detected and evaluated quantities.

Die Zähne 5 unterteilen eine Kontur 4 des Signalge­ bers 2 am Umfang gleichmäßig, wobei der Abstand zwischen dem Sensor 1 und den Flanken 6 und 7 der Zähne 5 mit der Rotation des Signalgebers 2 variiert. Die Flanken 6 und 7 sind symmetrisch ausgebildet, und zwar verläuft die länge­ re Flanke 6 mit einer geringeren Neigung zur Drehrich­ tung 8, 9 während die kürzere Flanke 7 verstärkt radial ausgerichtet ist. Die positive Drehrichtung ist mit 8 und die Gegendrehrichtung mit 9 bezeichnet.The teeth 5 divide a contour 4 of the signal sensor 2 on the circumference evenly, the distance between the sensor 1 and the flanks 6 and 7 of the teeth 5 varying with the rotation of the signal generator 2 . The flanks 6 and 7 are symmetrical, namely the longer re flank 6 with a lower inclination to the direction of rotation 8 , 9 while the shorter flank 7 is increasingly radially aligned. The positive direction of rotation is designated 8 and the counter-direction of rotation 9 .

Während der Rotation erzeugt der Signalgeber 2 im Sen­ sor 1 ein Spannungssignal U, dessen Signalverlauf in Dreh­ richtung 8 mit 10 und in Gegenrichtung 9 mit 14 bezeichnet ist. Fig. 2 zeigt den Signalverlauf 10 mit einer durchgezo­ genen Linie und den Signalverlauf 14 mit einer gestrichel­ ten Linie in einem Diagramm, in dem die Spannung U über den Drehwinkel ϕ aufgetragen ist. Eine Signalform 11, die von einem Zahn 5 erzeugt wird, ist entsprechend der asymmetri­ schen Zahnflanken 6, 7 asymmetrisch ausgebildet und besitzt einen flach verlaufenden Bereich 12, den die Zahnflanke 6 erzeugt und einen steileren Bereich 13, den die Zahnflan­ ke 7 erzeugt.During rotation, the signal generator 2 in the sensor 1 generates a voltage signal U, the signal course in the direction of rotation 8 with 10 and in the opposite direction 9 with 14 . Fig. 2 shows the waveform 10 with a solid line and the waveform 14 with a dashed line in a diagram in which the voltage U is plotted against the angle of rotation ϕ. A waveform 11 , which is generated by a tooth 5 , is formed asymmetrically in accordance with the asymmetrical tooth flanks 6 , 7 and has a flat region 12 which the tooth flank 6 generates and a steeper region 13 which the tooth flank ke 7 generates.

Für die Auswertung wird vorzugsweise ein Bereich 12 gewählt, in dem die Steigung der Signalform 11 im wesent­ lich konstant verläuft, d. h. daß in diesem Bereich die Spannung U proportional dem Drehwinkel ϕ ist. Dem Be­ reich 12 mit einer leichten positiven Steigung entspricht der Bereich 12' des Signalverlaufs 14 mit einer leicht ne­ gativen Steigung bei einer Rotation in der Gegendrehrich­ tung 9. Aus der Veränderung ΔU des Signalwerts in einer Zeiteinheit kann auf die Drehzahl geschlossen werden. For the evaluation, a range 12 is preferably selected in which the slope of the signal form 11 is essentially constant, ie that in this range the voltage U is proportional to the angle of rotation winkel. Be the area 12 with a slight positive slope corresponds to the area 12 'of the waveform 14 with a slightly negative slope during rotation in the opposite direction 9th The speed can be inferred from the change ΔU of the signal value in one time unit.

BezugszeichenlisteReference list

11

Sensor
sensor

22nd

Signalgeber
Signal generator

33rd

Auswerteeinrichtung
Evaluation device

44th

Kontur
contour

55

Zahn
tooth

66

Zahnflanke (flach)
Tooth flank (flat)

77

Zahnflanke (steil)
Tooth flank (steep)

88th

Drehrichtung
Direction of rotation

99

Gegendrehrichtung
Reverse direction

1010th

Signalverlauf
Waveform

1111

Signalform
Waveform

1212th

proportionaler Bereich
proportional range

1212th

' Bereich
' Area

1313

proportionaler Bereich
proportional range

1414

Signalverlauf
Waveform

Claims (3)

1. Vorrichtung zum Erfassen einer Drehzahl und einer zugehörigen Drehrichtung (8, 9) mittels eines feststehen­ den, analogen Sensors (1), eines rotierenden Signalge­ bers (2), der sich mit seiner gleichmäßig unterteilten Kon­ tur (4) in verschiedenen Abständen am Sensor (1) vorbei bewegt und mit jedem Konturenabschnitt (5) eine Signal­ form (11), erzeugt, und mittels einer Auswerteeinrich­ tung (3), welche die gewonnenen Signale des Sensors (1) nach Drehzahl und Drehrichtung (8, 9) auswertet, dadurch gekennzeichnet, daß das Signalgeber (2) eine asymmetrische Signalform (11) erzeugt, deren Flanken­ steigung (ΔU/Δϕ) ausgewertet wird, um die Drehrichtung (8, 9) und/oder Drehzahl (ϕ) zu erfassen.1. Device for detecting a speed and an associated direction of rotation ( 8 , 9 ) by means of a fixed, analog sensor ( 1 ), a rotating signal sensor ( 2 ), which with its evenly divided con ture ( 4 ) at different intervals Sensor ( 1 ) moves past and with each contour section ( 5 ) generates a signal form ( 11 ), and by means of an evaluation device ( 3 ) which evaluates the signals obtained from the sensor ( 1 ) according to the speed and direction of rotation ( 8 , 9 ) , characterized in that the signal generator ( 2 ) generates an asymmetrical signal shape ( 11 ), the slope (ΔU / Δϕ) is evaluated to detect the direction of rotation ( 8 , 9 ) and / or speed (ϕ). 2. Vorrichtung nach Anspruch 1, dadurch ge­ kennzeichnet, daß der Sensor (1) ein analoger elektromagnetischer Wandler, z. B. Hall-Effekt-Sensor, und der Signalgeber (2) ein Polrad ist, dessen Kontur (4) Zähne (5) mit in Drehrichtung (8, 9) asymmetrischen Flanken (6, 7) hat.2. Device according to claim 1, characterized in that the sensor ( 1 ) is an analog electromagnetic converter, for. B. Hall effect sensor, and the signal generator ( 2 ) is a magnet wheel, the contour ( 4 ) teeth ( 5 ) with in the direction of rotation ( 8 , 9 ) asymmetrical flanks ( 6 , 7 ). 3. Vorrichtung nach Anspruch 1 oder 2, dadurch ge­ kennzeichnet, daß zum Auswerten des Signal­ verlaufs (10) nur Anteile (12, 13) der Signalform (11) mit einer konstanten Flankensteigung (ΔU/Δϕ) herangezogen wer­ den.3. Apparatus according to claim 1 or 2, characterized in that for evaluating the signal course ( 10 ) only portions ( 12 , 13 ) of the signal shape ( 11 ) with a constant slope (ΔU / Δϕ) who used the.
DE19814758A 1998-04-02 1998-04-02 Number of revolutions and direction of rotation detecting device Withdrawn DE19814758A1 (en)

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EP1229336A1 (en) * 2001-02-06 2002-08-07 Delphi Technologies, Inc. Device for determining speed and direction of movement
DE10133381A1 (en) * 2001-07-10 2003-01-23 Bayerische Motoren Werke Ag Device for detecting speed, direction of motion of body, e.g. rotating shaft, has asymmetrical trigger so that signal recorded by signal pick-up is different according to direction of movement of body
EP1324050A2 (en) * 2001-12-08 2003-07-02 Philips Intellectual Property & Standards GmbH Assembly for the detection of movement of an encoder
US6650110B2 (en) * 2001-06-04 2003-11-18 Delphi Technologies, Inc. Target wheel sensor assembly for producing an asymmetric signal and for determining the direction of motion of the target wheel based on the signal shape
WO2006020364A1 (en) * 2004-07-21 2006-02-23 Control Products Inc. Inductive position sensing device and method
WO2007134935A1 (en) * 2006-05-19 2007-11-29 Zf Friedrichshafen Ag Determination of the rotational speed of a transmission shaft
WO2007134933A1 (en) * 2006-05-19 2007-11-29 Zf Friedrichshafen Ag Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed
WO2010083007A3 (en) * 2009-01-19 2011-04-07 Allegro Microsystems, Inc. Direction detection sensor
DE102011078977A1 (en) * 2011-07-11 2013-01-17 Continental Teves Ag & Co. Ohg Device for measuring the angular velocity or velocity of a moving part and for detecting the direction of motion thereof
DE102016208649A1 (en) 2016-05-19 2017-11-23 Volkswagen Aktiengesellschaft Device and method for detecting a change in position of a signal transmitter wheel
US10955432B2 (en) 2015-03-27 2021-03-23 Alfa Laval Corporate Ab Centrifugal separator having a system for detecting rotation
DE102019218729A1 (en) * 2019-12-03 2021-06-10 Zf Friedrichshafen Ag Detection device for detecting rotational movement information of a rotating component of a drive train of a motor vehicle
DE102019218730A1 (en) * 2019-12-03 2021-06-10 Zf Friedrichshafen Ag Detection device for detecting rotational movement information of a rotating component of a motor vehicle
DE202021000701U1 (en) 2021-02-24 2022-05-27 Klemens Gintner Rotationally symmetrical speed sensor with direction of rotation detection

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DE4018834A1 (en) * 1989-06-20 1991-01-03 Volkswagen Ag Arrangement for distinguishing between opposite movement directions - has inductive sensor of periodic magnetic asymmetries with pole shoes at varying separations
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WO2007134933A1 (en) * 2006-05-19 2007-11-29 Zf Friedrichshafen Ag Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed
US7908914B2 (en) 2006-05-19 2011-03-22 Zf Friedrichshafen Ag Determination of the rotational speed of a transmission shaft
US8050832B2 (en) 2006-05-19 2011-11-01 Zf Friedrichshafen Ag Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed
CN101449170B (en) * 2006-05-19 2011-05-11 Zf腓德烈斯哈芬股份公司 Method for determining the rotational speed of the main shaft of a transmission, and transmission comprising a device for detecting rotational speed
WO2010083007A3 (en) * 2009-01-19 2011-04-07 Allegro Microsystems, Inc. Direction detection sensor
US8022692B2 (en) 2009-01-19 2011-09-20 Allegro Microsystems, Inc. Direction detection sensor
DE102011078977A1 (en) * 2011-07-11 2013-01-17 Continental Teves Ag & Co. Ohg Device for measuring the angular velocity or velocity of a moving part and for detecting the direction of motion thereof
CN103782178A (en) * 2011-07-11 2014-05-07 大陆-特韦斯贸易合伙股份公司及两合公司 Device for measuring the angular velocity or velocity of a moving part and for detecting the direction of motion of the moving part
US9551727B2 (en) 2011-07-11 2017-01-24 Continental Teves Ag & Co. Ohg Device for measuring the angular velocity or velocity of a moving part and for detecting the direction of motion of the moving part
US10955432B2 (en) 2015-03-27 2021-03-23 Alfa Laval Corporate Ab Centrifugal separator having a system for detecting rotation
DE102016208649A1 (en) 2016-05-19 2017-11-23 Volkswagen Aktiengesellschaft Device and method for detecting a change in position of a signal transmitter wheel
DE102019218729A1 (en) * 2019-12-03 2021-06-10 Zf Friedrichshafen Ag Detection device for detecting rotational movement information of a rotating component of a drive train of a motor vehicle
DE102019218730A1 (en) * 2019-12-03 2021-06-10 Zf Friedrichshafen Ag Detection device for detecting rotational movement information of a rotating component of a motor vehicle
DE202021000701U1 (en) 2021-02-24 2022-05-27 Klemens Gintner Rotationally symmetrical speed sensor with direction of rotation detection

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