DE4420509A1 - Device for obtaining operating signals for a machine - Google Patents

Device for obtaining operating signals for a machine

Info

Publication number
DE4420509A1
DE4420509A1 DE4420509A DE4420509A DE4420509A1 DE 4420509 A1 DE4420509 A1 DE 4420509A1 DE 4420509 A DE4420509 A DE 4420509A DE 4420509 A DE4420509 A DE 4420509A DE 4420509 A1 DE4420509 A1 DE 4420509A1
Authority
DE
Germany
Prior art keywords
teeth
rows
magnetic field
permanent magnet
sensors
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Withdrawn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
DE4420509A
Other languages
German (de)
Inventor
Klaus-Juergen Sandvoss
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Priority to DE4420509A priority Critical patent/DE4420509A1/en
Publication of DE4420509A1 publication Critical patent/DE4420509A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • G01P3/488—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 variable reluctance detectors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

A device for obtaining signals for the operation of, in particular, an internal combustion engine contains a number of rows of teeth (4, 5) of different mark-space ratios and/or speeds of rotation, which rotate in parallel planes. They are allocated, in a common housing (7) of a pulse generator (6), individual magnetic-field-dependent sensors, for example Hall sensors (9, 10) which are preferably located in magnetic field paths of a common permanent magnet (8) (Figure 1). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Patentanspruchs 1. Bezogen auf den bevorzugten Einsatzfall der Erfindung, nämlich die Erzeugung von Betriebssignalen einer Brennkraftmaschine, kann es sich um die Zündung in den einzelnen Brennräumen auslösende Signale handeln, wobei die Zähne einer ersten Zahnreihe Kurbelwinkelinkremente darstellen, während die zweite Zahnreihe mit zumindest einem Zahn zur Zylinderidenti­ fizierung dient. Vorrichtungen dieser Art können jedoch auch Steueraufgaben in anderen Bereichen, beispielsweise in Fahrzeug- Brennkraftmaschinen nachgeschalteten automatischen Getrieben, lösen.The invention relates to a device according to the preamble of claim 1. Based on the preferred application of the invention, namely the generation of operating signals Internal combustion engine, it can be the ignition in each Firing chambers trigger signals act, the teeth of one first row of teeth represent crank angle increments, while the second row of teeth with at least one tooth for cylinder identification fication serves. However, devices of this type can also Tax duties in other areas, such as vehicle Automatic transmissions connected to internal combustion engines, to solve.

Gattungsgemäße Vorrichtungen sind aus der EP 0 161 124 A1, G01P 3/488 und der DE-OS 29 49 260, G01D 5/20 in der Weise bekannt, daß zwei rotierenden Zahnreihen mit gleichen Kopfradien und un­ terschiedlichen Zähnezahlen ein Impulsgeber mit einem einzigen Permanentmagneten und einer einzigen, beispielsweise durch einen Hallgeber gebildeten magnetfeldabhängigen Sensoranordnung radial gegenübersteht. Eine derartige Konstruktion des Impulsgebers ist zwar sehr platzsparend, insbesondere in Richtung parallel zur Rotationsachse der Zahnreihen, erfordert jedoch eine nachge­ schaltete Auswerteeinrichtung zur Trennung der mittels der beiden Zahnreihen erzeugten Signale.Generic devices are from EP 0 161 124 A1, G01P 3/488 and DE-OS 29 49 260, G01D 5/20 known in the manner that two rotating rows of teeth with the same head radii and un Different number of teeth a pulse generator with a single Permanent magnets and a single one, for example by one Hall sensor formed magnetic field-dependent sensor arrangement radially faces. Such a construction of the pulse generator is very space-saving, especially in the direction parallel to Rotation axis of the rows of teeth, however, requires a follow-up switched evaluation device to separate the means of signals generated by two rows of teeth.

Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung unter Wahrung ihres vorteilhaften platzsparenden Aufbaus so auszubilden, daß sich eine nachträgliche Trennung der mittels der verschiedenen Zahnreihen erzeugten Impulssignale erübrigt.The invention has for its object a generic Device while maintaining its advantageous space-saving Training so that there is a subsequent separation of the pulse signals generated by the different rows of teeth superfluous.

Die erfindungsgemäße Lösung dieser Aufgabe besteht in den kenn­ zeichnenden Merkmalen des Hauptanspruchs, vorteilhafte Ausfüh­ rungen der Erfindung beschreiben die Unteransprüche.The inventive solution to this problem consists in the drawing features of the main claim, advantageous Ausfüh The invention describes the subclaims.

Dadurch, daß in den Magnetfeldpfaden zwischen der Permanent­ magnetanordnung, die bei einer bevorzugten Ausführungsform der Erfindung nur einen einzigen allen Zahnreihen zugeordneten Permanentmagneten zu enthalten braucht, und den Zahnreihen diesen individuell zugeordnete magnetfeldabhängige Sensoran­ ordnungen vorgesehen sind, werden von vornherein getrennte Impulssignale erzeugt, so daß sich eine nachträgliche Trenn­ schaltung erübrigt. Insbesondere bei Verwendung von Hallsensoren macht die Unterbringung der Sensoren platzmäßig keine Schwierig­ keiten.The fact that in the magnetic field paths between the permanent magnet arrangement, which in a preferred embodiment of the Invention only one associated with all rows of teeth Need to contain permanent magnets, and the rows of teeth this individually assigned magnetic field-dependent sensor regulations are provided, are separated from the outset Pulse signals generated so that there is a subsequent separation circuit unnecessary. Especially when using Hall sensors makes the placement of the sensors not difficult in terms of space keiten.

Drei Ausführungsbeispiele der Erfindung werden im folgenden anhand der Zeichnung erläutert, deren Figuren Seitenansichten, teilweise im Schnitt, zeigen.Three embodiments of the invention are as follows explained with reference to the drawing, the figures of which are side views, partly in section.

In allen Figuren ist angenommen, daß auf der beispielsweise mit Kurbelwellendrehzahl einer Brennkraftmaschine angetriebenen Wel­ le 1 zwei demgemäß rotierende Scheiben mit Zahnreihen angeordnet sind, wobei die Konstruktion dieser Scheiben in den einzelnen Figuren differiert.In all the figures it is assumed that on the shaft 1, for example driven by crankshaft speed of an internal combustion engine, two accordingly rotating disks with rows of teeth are arranged, the construction of these disks differing in the individual figures.

In Fig. 1 sind zwei derartige Zahnscheiben 2 und 3 vorhanden, die mit Zahnreihen 4 und 5 unterschiedlicher Zähnezahl und/oder unterschiedlichen Tastverhältnissen versehen sind; die Zähne der Zahnreihen 4 und 5 weisen radial nach außen. Ihren Köpfen steht der Impulsgeber 6 radial gegenüber, der in dem Gehäuse 7 den einzigen Permanentmagneten 8 und in Magnetfeldpfaden zwischen diesem und den Zahnreihen 4 und 5 zwei Hallsensoren 9 und 10 enthält, die demgemäß den Zahnreihen 4 und 5 individuell zuge­ ordnet sind. Dadurch ist es möglich, unmittelbar durch die Zähne der Zahnreihen 4 und 5 erzeugte impulsförmige Signale ohne nachträgliche Trennung zu erhalten.In Fig. 1 there are two such toothed disks 2 and 3 , which are provided with rows of teeth 4 and 5 different numbers of teeth and / or different duty cycles; the teeth of the rows of teeth 4 and 5 point radially outwards. Their heads are the pulse generator 6 radially opposite, which contains the only permanent magnets 8 in the housing 7 and in magnetic field paths between this and the rows of teeth 4 and 5 two Hall sensors 9 and 10 , which are accordingly assigned to the rows of teeth 4 and 5 individually. This makes it possible to obtain pulse-shaped signals generated directly by the teeth of the tooth rows 4 and 5 without subsequent separation.

In dem Ausführungsbeispiel nach Fig. 2 besitzen die beiden wiederum Zahnreihen 20 und 21 mit radial weisenden Zähnen tragenden Scheiben 22 und 23 unterschiedliche Radien. Der Zahnreihe 21 ist im Gehäuse 24 des Impulsgebers 25 der Perma­ nentmagnet 26 und im radialen Zwischenraum zwischen diesem und der Zahnreihe 21 der Hallsensor 27 zugeordnet. Demgegenüber besitzt das Gehäuse 24 für die Zahnreihe 20 die Ausnehmung 28, und der Zahnreihe 20 sind ein Permanentmagnet 29 und ein Hall­ sensor 30 seitlich, d. h. in Richtung der Welle 1, gegenüber­ stehend zugeordnet.In the exemplary embodiment according to FIG. 2, the two rows of teeth 20 and 21 with disks 22 and 23 bearing radially pointing teeth have different radii. The row of teeth 21 is in the housing 24 of the pulse generator 25 of the permanent magnet 26 and in the radial space between this and the row of teeth 21 of the Hall sensor 27 is assigned. In contrast, the housing 24 for the row of teeth 20 has the recess 28 , and the row of teeth 20 are a permanent magnet 29 and a Hall sensor 30 laterally, ie in the direction of the shaft 1 , facing each other.

Ein ähnliche Konstruktion zeigt Fig. 3: Auch hier weist das Gehäuse 40 des Impulsgebers 41 einen Ausschnitt 42 zur Aufnahme von Zähnen der Zahnreihe 43 der Scheibe 44 auf, jedoch weisen diese Zähne jetzt in Achsrichtung (stets auf die Welle 1 bezo­ gen), so daß Hallsensor 45 und Permanentmagnet 46 bei gleicher Anordnung wie in Fig. 2 den Köpfen der Zähne der Zahnreihe 43 gegenüberstehen.A similar construction is shown in FIG. 3: Again, the housing 40 of the pulse generator 41 has a cutout 42 for receiving teeth of the row of teeth 43 of the disk 44 , but these teeth now have an axial direction (always referring to the shaft 1 ) that Hall sensor 45 and permanent magnet 46 with the same arrangement as in Fig. 2 face the heads of the teeth of the row of teeth 43 .

Die Scheibe 47 trägt dagegen wieder eine Zahnreihe mit radial nach außen weisenden Zähnen, denen ein Permanentmagnet 49 und ein Hallsensor 50 radial gegenüberstehen.The disk 47 , on the other hand, again has a row of teeth with teeth pointing radially outwards, which are opposed radially by a permanent magnet 49 and a Hall sensor 50 .

Mit der Erfindung ist demgemäß ein gattungsgemäße Vorrichtung geschaffen, die bei minimalem Platzbedarf eine einwandfreie Trennung der mittels der unterschiedlichen Zahnreihen erzeugten Signale sicherstellt.With the invention is accordingly a generic device created a flawless with minimal space requirements Separation of those generated by the different rows of teeth Ensures signals.

Claims (4)

1. Vorrichtung zur Gewinnung von Signalen für den Betrieb einer Maschine, insbesondere einer Brennkraftmaschine, mit zumin­ dest zwei in parallelen Ebenen rotierenden Reihen von magne­ tische Unsymmetrien darstellenden Zähnen, wobei die Tastver­ hältnisse und/oder die Rotationsgeschwindigkeiten der beiden Zahnreihen differieren, und mit einer den rotierenden Zahn­ reihen ortsfest gegenüberstehenden, eine Permanentmagnetan­ ordnung sowie eine magnetfeldabhängige Sensoranordnung in einem Gehäuse enthaltenden Impulsgeber, dadurch gekennzeich­ net, daß in dem Gehäuse (7) in Magnetfeldpfaden zwischen der Permanentmagnetanordnung (8) und den Zahnreihen (4, 5) diesen individuell zugeordnete magnetfeldabhängige Sensoren (9, 10) angeordnet sind.1.Device for obtaining signals for the operation of a machine, in particular an internal combustion engine, with at least two rows of teeth which represent magnetic asymmetries and which rotate in parallel planes, the tactile ratios and / or the rotational speeds of the two rows of teeth differing, and with one the rotating tooth rows fixedly opposite, a permanent magnet arrangement and a magnetic field-dependent sensor arrangement in a housing-containing pulse generator, characterized in that in the housing ( 7 ) in magnetic field paths between the permanent magnet arrangement ( 8 ) and the tooth rows ( 4 , 5 ) these individually assigned Magnetic field-dependent sensors ( 9 , 10 ) are arranged. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zähne der Zahnreihen (4, 5) radial nach außen weisend auf gleichen Radien sowie die ihnen zugeordneten Sensoren (9, 10) nebeneinander ihnen radial gegenüberstehend im Magnetfeld eines ihnen gemeinsamen Permanentmagneten (8) liegen.2. Device according to claim 1, characterized in that the teeth of the rows of teeth ( 4 , 5 ) pointing radially outward on the same radii and the sensors ( 9 , 10 ) assigned to them next to one another in the magnetic field of a permanent magnet ( 8 ) common to them. lie. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zähne der Zahnreihen (20, 21) radial nach außen weisen und zumindest einer der Sensoren (30) axial neben der ihm zuge­ ordneten Zahnreihe (20) liegt.3. Apparatus according to claim 1, characterized in that the teeth of the rows of teeth ( 20 , 21 ) point radially outwards and at least one of the sensors ( 30 ) lies axially next to the associated row of teeth ( 20 ). 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Zähne zumindest einer Zahnreihe (43) senkrecht zu ihrer Rotationsebene weisen und der ihnen zugeordneten Sensor (45) ihnen axial gegenübersteht.4. The device according to claim 1, characterized in that the teeth have at least one row of teeth ( 43 ) perpendicular to their plane of rotation and the sensor ( 45 ) assigned to them faces them axially.
DE4420509A 1993-07-07 1994-06-13 Device for obtaining operating signals for a machine Withdrawn DE4420509A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4420509A DE4420509A1 (en) 1993-07-07 1994-06-13 Device for obtaining operating signals for a machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4322635 1993-07-07
DE4420509A DE4420509A1 (en) 1993-07-07 1994-06-13 Device for obtaining operating signals for a machine

Publications (1)

Publication Number Publication Date
DE4420509A1 true DE4420509A1 (en) 1995-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE4420509A Withdrawn DE4420509A1 (en) 1993-07-07 1994-06-13 Device for obtaining operating signals for a machine

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DE (1) DE4420509A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055047A1 (en) * 2000-11-07 2002-05-08 Volkswagen Ag Device for measuring revolution rate has revolution rate sensor arranged between two rotatable elements with two sensor elements facing rotatable element markings in axial direction
DE102008007519A1 (en) * 2008-02-05 2009-08-13 Nordex Energy Gmbh Device for monitoring the speed in a wind turbine
DE102008042961A1 (en) * 2008-10-20 2010-04-22 Zf Friedrichshafen Ag Speed measuring device for measuring speed of shaft in gear of vehicle, has two sensor cells arranged opposite to each other for scanning counting traces that are arranged to each other in different planes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055047A1 (en) * 2000-11-07 2002-05-08 Volkswagen Ag Device for measuring revolution rate has revolution rate sensor arranged between two rotatable elements with two sensor elements facing rotatable element markings in axial direction
DE102008007519A1 (en) * 2008-02-05 2009-08-13 Nordex Energy Gmbh Device for monitoring the speed in a wind turbine
DE102008042961A1 (en) * 2008-10-20 2010-04-22 Zf Friedrichshafen Ag Speed measuring device for measuring speed of shaft in gear of vehicle, has two sensor cells arranged opposite to each other for scanning counting traces that are arranged to each other in different planes

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