WO1999058986A1 - Vorrichtung zur positionserfassung von rotierenden objekten - Google Patents
Vorrichtung zur positionserfassung von rotierenden objekten Download PDFInfo
- Publication number
- WO1999058986A1 WO1999058986A1 PCT/DE1999/001173 DE9901173W WO9958986A1 WO 1999058986 A1 WO1999058986 A1 WO 1999058986A1 DE 9901173 W DE9901173 W DE 9901173W WO 9958986 A1 WO9958986 A1 WO 9958986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light beam
- optical
- optical axis
- rotating object
- slit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/24—Curved surfaces
Definitions
- the invention relates to a device for detecting the position of rotating objects with an optical signal transmitter and an optical sensor.
- Position detection of rotating objects is often carried out in machine construction with the aid of reticulated disks, which rotate with the object and are evaluated by a sensor. This makes it possible to determine the speed, position and, if appropriate, direction of rotation of the rotating object.
- devices of this type are not suitable for performing highly precise position recordings, as are required, for example, in electronic reproduction technology when exposing recording material by means of an electronic recording device, also called a recorder, imagesetter or imagesetter, in order to achieve good recording quality .
- a light beam modulated by an image signal is guided point by line and line by line over a recording material to be exposed by means of a rotating light beam deflection device.
- the recording material is fixed on a holder which moves relative to the light beam deflection device.
- a reference pulse must be generated by precise position detection, with which the deflection movement of the light beam and the transport of the recording material are synchronized.
- a device for generating such a reference pulse is already known from DE-OS 195 16 154.
- the device has a stationary light source which generates a light beam directed onto a rotating object.
- the light beam is reflected by a mirror on the rotating object on a 2
- NEN reflects a stationary optical sensor that generates an electrical reference pulse in a defined angular position of the rotating object.
- the object of the present invention is therefore to improve a device for position detection in such a way that precise position marking is ensured with a simple structure.
- Fig. 1 shows the basic structure of a device for detecting the position of a rotating object
- Fig. 2 shows an application example for the device for position detection in an inner drum recorder.
- Fig. 1 shows the basic structure of a device for position detection of a rotating object, abbreviated position detection device.
- the position detection device has a stationary optical signal transmitter (1) with a light source (2) and a collimator (3).
- the light source (2) generates a light beam (4) collimated by the collimator (3) along an optical axis (5).
- An optical sensor (6) is arranged in a stationary manner on the optical axis (5) opposite the optical signal transmitter (1).
- the shaft (7) As a rotating object, the axis of rotation (8) of which is essentially perpendicular to the optical axis (5).
- the shaft (7) has a diametrically extending bore (9) with an entry window (10) and an exit window (11) for the light beam (4).
- a lens (12) is arranged in the bore (9) in the area of the entry window (10) and a slit diaphragm (13) with a gap (14) in the area of the exit window (11).
- the objective (12) focuses the light beam (4) incident through the entry window (10) onto the slit diaphragm (13).
- the gap (14) of the slit diaphragm (13) is oriented in such a way that its longitudinal extent in the direction of the axis of rotation (8) of the shaft (7) and its transverse extent (gap width) run perpendicular to it.
- Objective (12) and / or slit diaphragm (13) can be arranged displaceably within the bore (9) in the direction of the center line (15).
- the light beam (4) generated in the optical signal transmitter (1) falls in that angular position of the shaft (7) in which the optical axis (5) of the light beam (4) with the optical axis (15) of the objective (12) and Slit diaphragm (13) coincides through the gap (14) of the slit diaphragm (13) on the optical sensor (6).
- the optical sensor (6) thus generates an electrical reference pulse, also called "start-off-line pulse” or SOL pulse for short, once per revolution of the shaft (7), which detects a defined angular position of the shaft (7).
- the light source (1) is preferably a single-mode light source, for example a laser diode.
- a photodiode can be used as the optical sensor (6).
- the collimator (3) can be used as an achomat or as a plano-convex or 4
- the collimator (3) can be arranged in the optical signal transmitter (1) so as to be displaceable along the optical axis (5).
- Fig. 2 shows an application example of the device according to the invention for position detection in an inner drum recorder.
- a recording material (16) to be exposed is fixed on the inner surface of a stationary half-shell or exposure trough (17).
- the pixel-by-line exposure of the recording material (16) takes place through the light beam (4), which is brightness-modulated with the information to be exposed.
- the light beam (4) is guided by a light beam deflection device (18) coupled to the rotating shaft (7) pixel by line and line by line over the recording material (16), the beginning of each line on the recording material (16) using the once per Rotation of the shaft (7) in a defined angular position of the shaft (7) generated SOL pulse is signaled.
- the position detection method (7) is in the area of the shaft (7) Fig. 1 is present, which generates the SOL pulse.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000548738A JP3462177B2 (ja) | 1998-05-08 | 1999-04-19 | 回転対象物の位置を検出する装置 |
EP99926270A EP1084415A1 (de) | 1998-05-08 | 1999-04-19 | Vorrichtung zur positionserfassung von rotierenden objekten |
US09/708,287 US6316765B1 (en) | 1998-05-08 | 2000-11-08 | Device for detecting the position of rotating objects |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19820630A DE19820630A1 (de) | 1998-05-08 | 1998-05-08 | Vorrichtung zur Positionserfassung von rotierenden Objekten |
DE19820630.5 | 1998-05-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/708,287 Continuation US6316765B1 (en) | 1998-05-08 | 2000-11-08 | Device for detecting the position of rotating objects |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999058986A1 true WO1999058986A1 (de) | 1999-11-18 |
Family
ID=7867110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/001173 WO1999058986A1 (de) | 1998-05-08 | 1999-04-19 | Vorrichtung zur positionserfassung von rotierenden objekten |
Country Status (5)
Country | Link |
---|---|
US (1) | US6316765B1 (de) |
EP (1) | EP1084415A1 (de) |
JP (1) | JP3462177B2 (de) |
DE (1) | DE19820630A1 (de) |
WO (1) | WO1999058986A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007019045A1 (de) * | 2007-04-23 | 2008-11-06 | Abb Ag | Stellantrieb |
CN201958667U (zh) * | 2011-01-30 | 2011-09-07 | 漳州灿坤实业有限公司 | 一种烤面包机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4056722A (en) * | 1976-09-29 | 1977-11-01 | Dictaphone Corporation | Shaft position sensor |
SU1269026A1 (ru) * | 1985-06-26 | 1986-11-07 | Харьковский Автомобильно-Дорожный Институт Им.Комсомола Украины | Устройство дл измерени неравномерности скорости вращени |
DE19609817A1 (de) * | 1996-03-13 | 1997-09-18 | Bosch Gmbh Robert | Anordnung zur Erfassung der Umdrehung eines elektrischen Motors |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB818466A (en) * | 1956-05-24 | 1959-08-19 | Mullard Radio Valve Co Ltd | Improvements in or relating to apparatus for measuring angles |
DE1673973A1 (de) * | 1968-01-30 | 1971-06-24 | Muldau Hans H Von Dipl Ing | BCD Winkelcodiertrommel |
NL137759C (de) * | 1969-04-17 | |||
US3680378A (en) * | 1970-09-11 | 1972-08-01 | Fibre Optics Ind Inc | Fluid flow rate meter |
EP0062642B1 (de) * | 1980-06-27 | 1986-09-10 | Movement Techniques Limited | Vorrichtung zum messen einer bewegung und markierungen zu deren verwendung |
DE3233101C2 (de) * | 1982-09-07 | 1985-05-15 | Feinprüf Feinmeß- und Prüfgeräte GmbH, 3400 Göttingen | Kolbenmeßmaschine |
DE3901876A1 (de) * | 1988-02-18 | 1989-08-31 | Precitronic | Vorrichtung zum messen von drehwinkeln |
EP0439804B1 (de) | 1989-12-26 | 1995-09-20 | Canon Kabushiki Kaisha | Rotations-Detektorapparat |
DE4002743A1 (de) * | 1990-01-31 | 1991-08-08 | Fraunhofer Ges Forschung | Vorrichtung zum messen der position eines filamentbuendels |
DK207090D0 (da) * | 1990-08-29 | 1990-08-29 | Andersen Allan V | Fremgangsmaade og apparat til udfoerelse af tromlescanning |
DE19516154A1 (de) * | 1995-05-03 | 1996-11-14 | Hell Ag Linotype | Vorrichtung zur Positionserfassung von rotierenden Objekten |
DE29617149U1 (de) * | 1996-10-02 | 1996-11-14 | Alcatel Alsthom Compagnie Générale d'Electricité, Paris | Vorrichtung zur Erzeugung von Impulsen |
US5903000A (en) * | 1997-03-31 | 1999-05-11 | Honeywell Inc. | Method for determining the position of a rotating shaft |
-
1998
- 1998-05-08 DE DE19820630A patent/DE19820630A1/de not_active Withdrawn
-
1999
- 1999-04-19 EP EP99926270A patent/EP1084415A1/de not_active Withdrawn
- 1999-04-19 JP JP2000548738A patent/JP3462177B2/ja not_active Expired - Fee Related
- 1999-04-19 WO PCT/DE1999/001173 patent/WO1999058986A1/de not_active Application Discontinuation
-
2000
- 2000-11-08 US US09/708,287 patent/US6316765B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4056722A (en) * | 1976-09-29 | 1977-11-01 | Dictaphone Corporation | Shaft position sensor |
SU1269026A1 (ru) * | 1985-06-26 | 1986-11-07 | Харьковский Автомобильно-Дорожный Институт Им.Комсомола Украины | Устройство дл измерени неравномерности скорости вращени |
DE19609817A1 (de) * | 1996-03-13 | 1997-09-18 | Bosch Gmbh Robert | Anordnung zur Erfassung der Umdrehung eines elektrischen Motors |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section EI Week 198725, Derwent World Patents Index; Class S02, AN 1987-176866, XP002117734 * |
Also Published As
Publication number | Publication date |
---|---|
DE19820630A1 (de) | 1999-11-11 |
JP2002514768A (ja) | 2002-05-21 |
US6316765B1 (en) | 2001-11-13 |
EP1084415A1 (de) | 2001-03-21 |
JP3462177B2 (ja) | 2003-11-05 |
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