DE102011054494A1 - Rotary encoder i.e. multi-turn rotary encoder, for measuring e.g. number of revolutions of shaft, has single-turn component whose coding element is arranged between magnetic bodies and magnetic field-sensitive sensing elements of gear boxes - Google Patents
Rotary encoder i.e. multi-turn rotary encoder, for measuring e.g. number of revolutions of shaft, has single-turn component whose coding element is arranged between magnetic bodies and magnetic field-sensitive sensing elements of gear boxes Download PDFInfo
- Publication number
- DE102011054494A1 DE102011054494A1 DE102011054494A DE102011054494A DE102011054494A1 DE 102011054494 A1 DE102011054494 A1 DE 102011054494A1 DE 102011054494 A DE102011054494 A DE 102011054494A DE 102011054494 A DE102011054494 A DE 102011054494A DE 102011054494 A1 DE102011054494 A1 DE 102011054494A1
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- DE
- Germany
- Prior art keywords
- rotary encoder
- turn
- shaft
- magnetic
- revolutions
- 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.)
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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
- G01D5/244—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
- G01D5/2454—Encoders incorporating incremental and absolute signals
- G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
-
- 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
- G01D2205/20—Detecting rotary movement
- G01D2205/26—Details of encoders or position sensors specially adapted to detect rotation beyond a full turn of 360°, e.g. multi-rotation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Die Erfindung betrifft einen Drehgeber mit einer Singleturn- und einer Multiturn-Baugruppe, insbesondere zur Ermittlung der Winkellage und der Umdrehungszahl einer Welle, wobei die Singleturn-Baugruppe zumindest ein, sich in Abhängigkeit der Welle drehendes, eine magnetische Strahlung durchlassendes codiertes Element und eine die Codierung abtastende Abtasteinrichtung und die Multiturn-Baugruppe zumindest ein Getriebe mit Magnetkörpern und magnetfeldempfindlichen Sensorelementen aufweist. The invention relates to a rotary encoder with a single-turn and a multi-turn assembly, in particular for determining the angular position and the number of revolutions of a shaft, wherein the singleturn assembly at least one, depending on the shaft rotating, a magnetic radiation transmitting coded element and the Coding scanning scanner and the multi-turn module has at least one gear with magnetic bodies and magnetic field-sensitive sensor elements.
STAND DER TECHNIK STATE OF THE ART
Diese Drehgeber werden beispielsweise auch als Multiturn-Winkelmessgeräte bezeichnet. Sie dienen zur Messung von der Winkellage und der Umdrehungszahl einer Welle über mehrere Umdrehungen. Die Winkellage und Umdrehungszahl selbst werden meist absolut erfasst. These rotary encoders are also called, for example, multiturn angle encoders. They are used to measure the angular position and the number of revolutions of a shaft over several revolutions. The angular position and number of revolutions themselves are usually recorded absolutely.
Mit den Singleturn-Baugruppen wird dabei in der Regel nur die Winkellage innerhalb einer Umdrehung der Welle ermittelt. Um jedoch eine Anzahl von Drehungen der Welle ermitteln zu können, wird den Singleturn-Baugruppen meist ein Untersetzungsgetriebe zugeordnet, welches wesentlicher Bestandteil der Multiturn-Baugruppe ist. In der Multiturn-Baugruppe werden dann die Drehbewegungen der zu messenden Welle auf Drehbewegungen von winkelcodierten Getrieberädern übertragen, die sich mit entsprechend geringerer Drehzahl bewegen. Deren Winkelposition wird über entsprechende Magnetkörper von magnetfeldempfindlichen Sensorelementen ermittelt. Auf diese Weise kann die Stellung der Welle über eine Vielzahl von Umdrehungen bestimmt werden. As a rule, only the angular position within one revolution of the shaft is determined with the single-turn assemblies. However, in order to be able to determine a number of rotations of the shaft, the singleturn assemblies are usually associated with a reduction gear, which is an integral part of the multi-turn assembly. In the multiturn assembly, the rotational movements of the shaft to be measured are then transmitted to rotational movements of angle-coded gears which move at a correspondingly lower speed. Their angular position is determined by corresponding magnetic body of magnetic field sensitive sensor elements. In this way, the position of the shaft can be determined over a plurality of revolutions.
Derartige Multiturn-Drehgeber sind beispielsweise in der
AUFGABE TASK
Aufgabe der vorliegenden Erfindung ist es, die Baugrösse bekannter Drehgeber zu vermindern und deren Stabilität zu verbessern. The object of the present invention is to reduce the size of known rotary encoders and to improve their stability.
LÖSUNG DER AUFGABE SOLUTION OF THE TASK
Zur Lösung der Aufgabe führt, dass das codierte Element zwischen dem Getriebe mit den Magnetkörpern und den magnetfeldempfindlichen Sensorelementen angeordnet ist. To achieve the object results in that the coded element between the transmission with the magnetic bodies and the magnetic field-sensitive sensor elements is arranged.
Dies bedeutet, dass die Baugrösse des gesamten Drehgebers wesentlich vermindert wird. This means that the size of the entire encoder is significantly reduced.
In einem bevorzugten Ausführungsbeispiel der Erfindung sollen die bisher bekannten Baugruppen weiter verwendet, jedoch einfach umgestellt werden. Schon die bislang bekannten Drehgeber besassen einen Gehäuseflansch, in dem sich das Hauptlager für die Welle, deren Drehbewegung abzunehmen ist, befindet. Erfindungsgemäss wird nun das Untersetzungsgetriebe mit den Magnetkörpern in diesem Flansch angeordnet, was auch bedeutet, dass dieses Untersetzungsgetriebe in dem Flansch selbst festgelegt, ja sogar eingespritzt werden kann. Der Flansch stützt dabei auch das Untersetzungsgetriebe bzw. die entsprechenden Übertragungselemente für die Drehbewegung mit ab. Hier wird die Stabilität wesentlich verbessert. In a preferred embodiment of the invention, the previously known assemblies are to be used further, but simply changed over. Even the previously known rotary encoder had a housing flange in which the main bearing for the shaft whose rotational movement is to be removed is located. According to the invention, the reduction gear with the magnetic bodies is now arranged in this flange, which also means that this reduction gear can be set in the flange itself, and even injected. The flange also supports the reduction gear or the corresponding transmission elements for the rotational movement with. Here, the stability is significantly improved.
Für die mit den Magnetkörpern zusammenwirkenden magnetfeldempfindlichen Sensorelementen ist erfindungsgemäss einfach vorgesehen, dass das entsprechende Trägerelement, das in der Regel eine Leiterplatte ist, gedreht wird, so dass die magnetfeldempfindlichen Sensorelemente ebenfalls auf das codierte Element hin ausgerichtet sind. Die für die Erfassung der Drehbewegung uninteressanten Bauelemente der Steuerungs- und Erfassungselektronik sind dann auf der anderen Seite der Leiterplatte weg von dem codierten Element ausgerichtet. Dies beeinträchtigt aber die Funktionsfähigkeit in keinster Weise. For the magnetic field-sensitive sensor elements cooperating with the magnetic bodies, it is simply provided according to the invention that the corresponding carrier element, which is usually a printed circuit board, is rotated, so that the magnetic field-sensitive sensor elements are likewise aligned with the coded element. The components of the control and detection electronics which are of no interest for detecting the rotational movement are then aligned on the other side of the printed circuit board away from the coded element. However, this does not affect the functionality in any way.
FIGURENBESCHREIBUNG DESCRIPTION OF THE FIGURES
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in
Gemäss
Im Anschluss an den Flansch
Auf das codierte Element
Erfindungsgemäss soll nun nach
Damit die Sensorelemente
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005050016 A1 [0004] DE 102005050016 A1 [0004]
- DE 29924383 U1 [0004] DE 29924383 U1 [0004]
- DE 4220502 C1 [0004] DE 4220502 C1 [0004]
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011054494A DE102011054494A1 (en) | 2011-10-14 | 2011-10-14 | Rotary encoder i.e. multi-turn rotary encoder, for measuring e.g. number of revolutions of shaft, has single-turn component whose coding element is arranged between magnetic bodies and magnetic field-sensitive sensing elements of gear boxes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011054494A DE102011054494A1 (en) | 2011-10-14 | 2011-10-14 | Rotary encoder i.e. multi-turn rotary encoder, for measuring e.g. number of revolutions of shaft, has single-turn component whose coding element is arranged between magnetic bodies and magnetic field-sensitive sensing elements of gear boxes |
Publications (1)
Publication Number | Publication Date |
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DE102011054494A1 true DE102011054494A1 (en) | 2013-04-18 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102011054494A Withdrawn DE102011054494A1 (en) | 2011-10-14 | 2011-10-14 | Rotary encoder i.e. multi-turn rotary encoder, for measuring e.g. number of revolutions of shaft, has single-turn component whose coding element is arranged between magnetic bodies and magnetic field-sensitive sensing elements of gear boxes |
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DE (1) | DE102011054494A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11761793B2 (en) | 2020-05-26 | 2023-09-19 | Analog Devices International Unlimited Company | Magnetic sensor package |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4220502C1 (en) | 1992-06-23 | 1993-12-16 | Stegmann Max Antriebstech | Angle measurement system |
DE29924383U1 (en) | 1998-05-06 | 2003-01-16 | Dr. Johannes Heidenhain Gmbh, 83301 Traunreut | Multi-turn rotary encoder with sensor integrated in semiconductor chip |
DE102005050016A1 (en) | 2005-10-19 | 2007-04-26 | Dr. Johannes Heidenhain Gmbh | Multi-turn shaft encoder used in machine tools and industrial robots for measuring angle positions comprises a fixing element fixed to a support element |
-
2011
- 2011-10-14 DE DE102011054494A patent/DE102011054494A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4220502C1 (en) | 1992-06-23 | 1993-12-16 | Stegmann Max Antriebstech | Angle measurement system |
DE29924383U1 (en) | 1998-05-06 | 2003-01-16 | Dr. Johannes Heidenhain Gmbh, 83301 Traunreut | Multi-turn rotary encoder with sensor integrated in semiconductor chip |
DE102005050016A1 (en) | 2005-10-19 | 2007-04-26 | Dr. Johannes Heidenhain Gmbh | Multi-turn shaft encoder used in machine tools and industrial robots for measuring angle positions comprises a fixing element fixed to a support element |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11761793B2 (en) | 2020-05-26 | 2023-09-19 | Analog Devices International Unlimited Company | Magnetic sensor package |
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