DE10020895B4 - Locator device - Google Patents
Locator device Download PDFInfo
- Publication number
- DE10020895B4 DE10020895B4 DE2000120895 DE10020895A DE10020895B4 DE 10020895 B4 DE10020895 B4 DE 10020895B4 DE 2000120895 DE2000120895 DE 2000120895 DE 10020895 A DE10020895 A DE 10020895A DE 10020895 B4 DE10020895 B4 DE 10020895B4
- Authority
- DE
- Germany
- Prior art keywords
- positioning device
- markings
- reader
- encoder
- scale carrier
- 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.)
- Expired - Fee Related
Links
- 230000015654 memory Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims 1
- 239000003550 marker Substances 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 description 1
Images
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
- G01D5/244—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
- 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
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
- G01D18/006—Intermittent recalibration
-
- 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
- G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
Abstract
Positionsgebervorrichtung enthaltend einen entlang einer vorgegebenen Bahn verlaufenden Maßstabträger (1) mit Positionsmarkierungen (4) und einem die Positionsmarkierungen (4) auslesenden und die Position wiedergebenden Positionsleser (2), wobei Maßstabträger (1) und Positionsleser (2) relativ zueinander bewegbar sind, und wobei der Positionsleser (2) zur Positionsbestimmung jeweils n, im Abstand zueinander angeordnete Positionsmarkierungen (4) ausliest, dadurch gekennzeichnet, daß dem Positionsleser (2) auch ein Geber zur Erzeugung der Positionsmarkierungen (4) auf dem Maßstabträger (1) während der Relativbewegung von Maßstabträger (1) und Positionsleser (2) zugeordnet ist, wobei der Geber zumindest eine außerhalb der vom Positionsleser (2) gerade erfaßten n Positionsmarkierungen liegende Positionsmarkierung erzeugen kann.Position transmitter device comprising a scale carrier (1) running along a predetermined path with position markings (4) and a position reader (2) reading the position markers (4) and reproducing the position, the scale carrier (1) and position reader (2) being movable relative to one another, and wherein the position reader (2) reads out n position markings (4) arranged at a distance from one another, characterized in that the position reader (2) also has a transmitter for generating the position markings (4) on the scale carrier (1) during the relative movement of Scale carrier (1) and position reader (2) is assigned, the transmitter being able to generate at least one position marker lying outside the n position markings just detected by the position reader (2).
Description
Die Erfindung betrifft eine Positionsgebervorrichtung mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a position encoder device having the features of the preamble of
Derartige Positionsgebervorrichtungen, wie z. B. in
Die Positionsmarkierungen sind mit dem Maßstabträger dauerhaft vorher zu erstellen und sind nicht veränderbar. In vielfacher Hinsicht ist das Maßsystem frühzeitig festzulegen, z. B. Auflösung, Genauigkeit, Maßstabslänge, und ist somit starr und nachträglichen Änderungen, bzw. Erweiterungen nicht zugänglich. Der Erfindung liegt die Aufgabe zu Grunde, die Positionsmarkierungen jederzeit vorgeben zu können, um dadurch eine wesentlich flexiblere Handhabung und Einsatz der Positionsgeber-Vorrichung zu erreichen.The position markers have to be created permanently in advance with the scale carrier and can not be changed. In many ways, the measurement system must be defined early, eg. As resolution, accuracy, scale length, and is therefore rigid and subsequent changes, or extensions not accessible. The invention is based on the object of being able to specify the position markings at any time in order to achieve a substantially more flexible handling and use of the position sensor device.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of
Vorzugsweise sind die Positionsmarkierungen im beliebig gleichmäßigen Abstand zueinander auf dem Maßstabträger aufgebrachte und voneinander unterscheidbare Markierungen, von denen jeweils eine vorgegebene Zahl (n) vom Positionsleser gleichzeitig erfaßt werden und aus denen sich die Position ergibt. Die Markierungen sind vorzugsweise Speicherglieder, die vom Positionsleser auslesbar und vom Geber beaufschlagbar, kodierbar sind. Die Speicherglieder können elektrostatische, elektromagnetische, optische usw. Speicher sein.Preferably, the position markings in any uniform distance to each other on the scale carrier applied and distinguishable from each other markings, of which a predetermined number (n) are detected by the position reader at the same time and from which results in the position. The markings are preferably memory elements which can be read by the position reader and can be acted upon by the encoder. The memory elements may be electrostatic, electromagnetic, optical, etc. memories.
Die jeweilige Position ist also durch eine vorgegebene Zahl von nebeneinander liegenden Markierungen (Pixels) bestimmt, die durch eine entsprechende Zahl von Leseelementen des Positionslesers ausgelesen werden, wenn die Leseelemente den Markierungen gerade gegenüberstehen. Diese Bestimmung kann als Grobpositionsbestimmung benutzt werden. Die Feinbestimmung zwischen benachbarten Positionsmarkierungen wird dann vorzugsweise durch ein analoges Interpolationsverfahren z. B. ein Sinus/Kosinusverfahren durchgeführt.The respective position is thus determined by a predetermined number of adjacent markers (pixels), which are read out by a corresponding number of reading elements of the position reader, when the reading elements are just facing the markers. This determination can be used as coarse position determination. The fine determination between adjacent position markings is then preferably by an analogous interpolation method z. B. a sine / cosine method performed.
Die Erfindung bietet den Vorteil, daß man je nach Notwendigkeit in bestimmten Zeitabständen die Positionsmarkierungen auffrischen kann. Es ist sogar möglich, die aufgebrachten Positionsmarkierungen zu löschen und völlig andere Positionsmarkierungen aufzubringen, also einen völlig anderen Maßstab zu erzeugen.The invention has the advantage that you can refresh the position markers at certain intervals as required. It is even possible to delete the applied position markers and apply completely different position markers, that is to produce a completely different scale.
Anhand der Zeichnung wird ein Ausführungsbeispiel der Erfindung beschrieben.Reference to the drawings, an embodiment of the invention will be described.
Es zeigen:Show it:
In
Die Speicherelemente können auch innerhalb des Abstandes mehrfach, das heißt beliebig oft aufgebracht sein – z. B. als mikrostrukturierte Speicherschicht. Die Abstände der Positionsgeberanordnung (zur Festlegung der auszuwertenden Speicherelemente) sind zweckmäßiger Weise gleich des ganzzahlig vielfachen des Abstandes der Leseelemente zu wählen, damit die Auswertung der Markierungen einfach zu bewerkstelligen ist.The memory elements can also be applied multiple times within the distance, that is, as often as desired - z. B. as a microstructured storage layer. The distances of the position sensor arrangement (for determining the memory elements to be evaluated) are expediently to be chosen equal to the integer multiple of the distance of the reading elements, so that the evaluation of the markings is easy to accomplish.
Die Speicherelemente
Ausgehend von einem vorgegebenen Anfangspunkt kodiert der aus wenigstens (n + 1) Geberelementen bestehende Geber parallel die n den Ausgangspunkt (O-Punkt) wiedergebenden Markierungen plus wenigstens eine benachbarte Markierung, so daß bei der Weiterbewegung des Lesers
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000120895 DE10020895B4 (en) | 2000-04-29 | 2000-04-29 | Locator device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000120895 DE10020895B4 (en) | 2000-04-29 | 2000-04-29 | Locator device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10020895A1 DE10020895A1 (en) | 2001-10-31 |
DE10020895B4 true DE10020895B4 (en) | 2011-07-28 |
Family
ID=7640242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2000120895 Expired - Fee Related DE10020895B4 (en) | 2000-04-29 | 2000-04-29 | Locator device |
Country Status (1)
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DE (1) | DE10020895B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010028333A1 (en) * | 2010-04-28 | 2011-11-03 | Robert Bosch Gmbh | Incremental multi-position detection system for a circulating electromagnetic transfer system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD240065A1 (en) * | 1985-08-02 | 1986-10-15 | Schwerin Plastmaschinen | CIRCUIT ARRANGEMENT FOR EVALUATING INCREMENTAL WAYS OR WAYS. ANGLE MEASURING SYSTEMS |
DE3407102C2 (en) * | 1984-02-28 | 1988-09-08 | Euchner & Co, 7022 Leinfelden-Echterdingen, De | |
DE29521135U1 (en) * | 1995-03-11 | 1996-08-22 | Heidenhain Gmbh Dr Johannes | Position measuring system |
DE19701319A1 (en) * | 1997-01-16 | 1998-07-23 | Heidenhain Gmbh Dr Johannes | Position-measuring unit with scale rule having at least one gauge |
DE19833439A1 (en) * | 1997-08-07 | 1999-02-11 | Heidenhain Gmbh Dr Johannes | Sensing unit for optical position measurement |
-
2000
- 2000-04-29 DE DE2000120895 patent/DE10020895B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3407102C2 (en) * | 1984-02-28 | 1988-09-08 | Euchner & Co, 7022 Leinfelden-Echterdingen, De | |
DD240065A1 (en) * | 1985-08-02 | 1986-10-15 | Schwerin Plastmaschinen | CIRCUIT ARRANGEMENT FOR EVALUATING INCREMENTAL WAYS OR WAYS. ANGLE MEASURING SYSTEMS |
DE29521135U1 (en) * | 1995-03-11 | 1996-08-22 | Heidenhain Gmbh Dr Johannes | Position measuring system |
DE19701319A1 (en) * | 1997-01-16 | 1998-07-23 | Heidenhain Gmbh Dr Johannes | Position-measuring unit with scale rule having at least one gauge |
DE19833439A1 (en) * | 1997-08-07 | 1999-02-11 | Heidenhain Gmbh Dr Johannes | Sensing unit for optical position measurement |
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Publication number | Publication date |
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DE10020895A1 (en) | 2001-10-31 |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20111029 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20131101 |