DE102010005665A1 - System for measuring torsion between two measuring points of measuring section in e.g. lorry, has polarization analyzer attached to optical waveguide at measuring point, where point is connected with another measuring point over waveguide - Google Patents
System for measuring torsion between two measuring points of measuring section in e.g. lorry, has polarization analyzer attached to optical waveguide at measuring point, where point is connected with another measuring point over waveguide Download PDFInfo
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- DE102010005665A1 DE102010005665A1 DE102010005665A DE102010005665A DE102010005665A1 DE 102010005665 A1 DE102010005665 A1 DE 102010005665A1 DE 102010005665 A DE102010005665 A DE 102010005665A DE 102010005665 A DE102010005665 A DE 102010005665A DE 102010005665 A1 DE102010005665 A1 DE 102010005665A1
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- measuring
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- polarization analyzer
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- 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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/168—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of polarisation
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Die Erfindung betrifft ein Torsionsmesssystem und ein Verfahren zur Torsionsmessung zwischen einem ersten Messpunkt und einem zweiten Messpunkt, der durch einen Lichtwellenleiter optisch mit dem ersten Messpunkt verbunden ist, mit einer Lichtquelle, die polarisiertes Licht abgibt, und mit einem Polarisationsanalysator. Die Erfindung betrifft des Weiteren ein Kraftfahrzeug mit einem derartigen Torsionsmesssystem.The invention relates to a torsion measuring system and a method for torsion measurement between a first measuring point and a second measuring point, which is optically connected to the first measuring point by an optical waveguide, with a light source emitting polarized light, and with a polarization analyzer. The invention further relates to a motor vehicle with such a torsion measuring system.
Aus der deutschen Patentschrift
Aufgabe der Erfindung ist es, die Torsionsmessung, insbesondere an Kraftfahrzeugen, zu vereinfachen und/oder zu verbessern.The object of the invention is to simplify and / or to improve the torsion measurement, in particular on motor vehicles.
Die Aufgabe ist bei einem Torsionsmesssystem zur Torsionsmessung zwischen einem ersten Messpunkt und einem zweiten Messpunkt, der durch einen Lichtwellenleiter optisch mit dem ersten Messpunkt verbunden ist, mit einer Lichtquelle, die polarisiertes Licht abgibt, und mit einem Polarisationsanalysator, dadurch gelöst, dass der Polarisationsanalysator an dem zweiten Messpunkt an den Lichtwellenleiter angeschlossen ist. Durch die direkte Anbindung des Polarisationsanalysators an den zweiten Messpunkt kann ein bei herkömmlichen Torsionsmesssystemen verwendeter Reflektor entfallen.The object is in a Torsionsmesssystem for torsion measurement between a first measuring point and a second measuring point, which is optically connected by an optical waveguide with the first measuring point, with a light source emitting polarized light, and with a polarization analyzer, solved by the polarization analyzer on the second measuring point is connected to the optical waveguide. Due to the direct connection of the polarization analyzer to the second measuring point, a reflector used in conventional torsion measuring systems can be dispensed with.
Ein bevorzugtes Ausführungsbeispiel des Torsionsmesssystems ist dadurch gekennzeichnet, dass der erste Messpunkt über den Lichtwellenleiter mit mindestens einem weiteren Messpunkt verbunden ist. Der erste Messpunkt kann durch den Lichtwellenleiter, auch über Eck, mit mehreren Messpunkten verbunden sein. Zwischen zwei Messpunkten können auch Zwischenmesspunkte vorgesehen sein. Vorzugsweise ist jedem weiteren Messpunkt beziehungsweise Zwischenmesspunkt jeweils ein weiterer Polarisationsanalysator zugeordnet.A preferred embodiment of the torsion measuring system is characterized in that the first measuring point is connected via the optical waveguide with at least one further measuring point. The first measuring point can be connected by the optical waveguide, also on the corner, with several measuring points. Intermediate measuring points can also be provided between two measuring points. Preferably, each further measuring point or intermediate measuring point is assigned in each case a further polarization analyzer.
Ein weiteres bevorzugtes Ausführungsbeispiel des Torsionsmesssystems ist dadurch gekennzeichnet, dass der Polarisationsanalysator so angeordnet und/oder ausgeführt ist, dass er mehrere Spannungen ausgibt. In dem Polarisationsanalysator können zum Beispiel mehrere polarisationssensitive Fotodektoren verwendet werden, die Polarisationsfilter enthalten. Durch die Ausrüstung der Polarisationsfilter kann ein aktueller Polarisationszustand ermittelt werden.A further preferred embodiment of the torsion measuring system is characterized in that the polarization analyzer is arranged and / or designed such that it outputs a plurality of voltages. In the polarization analyzer, for example, a plurality of polarization-sensitive photodetectors including polarization filters may be used. By equipping the polarization filters, a current polarization state can be determined.
Ein weiteres bevorzugtes Ausführungsbeispiel des Torsionsmesssystems ist dadurch gekennzeichnet, dass die Lichtquelle eine Laserquelle umfasst. Die Lichtquelle ist vorzugsweise dem ersten Messpunkt zugeordnet, insbesondere an diesem oder in der Nähe von diesem befestigt.Another preferred embodiment of the torsion measuring system is characterized in that the light source comprises a laser source. The light source is preferably associated with the first measuring point, in particular attached thereto or in the vicinity of this.
Bei einem Verfahren zur Torsionsmessung zwischen einem ersten und einem zweiten Messpunkt mit einem vorab beschriebenen Torsionsmesssystem ist die vorab angegebene Aufgabe dadurch gelöst, dass der Polarisationsanalysator mehrere Spannungen ausgibt, die an eine Auswerteeinheit Übermittelt werden. Die von dem Polarisationsanalysator ausgegebenen Spannungen werden vorzugsweise in einem Analog/Digital-Wandler umgewandelt, bevor sie an die Auswerteeinheit übermittelt werden.In a method for torsion measurement between a first and a second measuring point with a torsion measuring system described above, the above-stated object is achieved in that the polarization analyzer outputs a plurality of voltages, which are transmitted to an evaluation unit. The voltages output by the polarization analyzer are preferably converted in an analog-to-digital converter before being transmitted to the evaluation unit.
Die umgewandelten Spannungen werden in der Auswerteeinheit in Stokes-Vektoren des polarisierten Lichts umgerechnet. Aus den Stokes-Vektoren wird der Winkel des linear polarisierten Lichts berechnet. Der Winkel entspricht der Ausrichtung zwischen den beiden Messpunkten.The converted voltages are converted in the evaluation unit into Stokes vectors of the polarized light. From the Stokes vectors the angle of the linearly polarized light is calculated. The angle corresponds to the alignment between the two measuring points.
Die Erfindung betrifft insbesondere ein Kraftfahrzeug mit einem vorab beschriebenen Torsionsmesssystem, das insbesondere gemäß einem vorab beschriebenen Verfahren verwendet wird. Bei dem Kraftfahrzeug handelt es sich vorzugsweise um einen Lastkraftwagen. Das erfindungsgemäße Torsionsmesssystem und/oder das erfindungsgemäße Verfahren zur Torsionsmessung werden/wird aber zum Beispiel auch bei Schiffen verwendet.In particular, the invention relates to a motor vehicle having a previously described torsion measuring system, which is used in particular according to a method described above. The motor vehicle is preferably a truck. However, the torsion measuring system according to the invention and / or the method according to the invention for torsion measurement are / is also used, for example, in ships.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung verschiedene Ausführungsbeispiele im Einzelnen beschrieben sind. Es zeigen: Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, various embodiments are described in detail. Show it:
Torsionsmessungen sind permanenter Bestandteil von Fahrzeugmessungen und allgemeinen Messaufgaben. Bei Fahrzeugmessungen sind insbesondere relativ lange Fahrzeuge, wie Transporter oder Lastkraftwagen, im Hinblick auf die Torsionsmessung interessant. Aber auch bei Schiffen ist die Torsionsmessung unter Last von Bedeutung.Torsion measurements are a permanent component of vehicle measurements and general measurement tasks. In vehicle measurements in particular relatively long vehicles, such as vans or trucks, with regard to the torsion measurement interesting. But even with ships, the torsion under load is important.
In
Durch Pfeile
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Durch Pfeile
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Wenn sich der erste Messpunkt verdreht, dann ändert sich auch die Lage der daran befestigten Laserlichtquelle und somit die Polarisation des Lichts im Lichtwellenleiter
Der dem zweiten Messpunkt
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 19705889 C2 [0002] DE 19705889 C2 [0002]
- DE 3415855 C2 [0002] DE 3415855 C2 [0002]
- DE 3638345 A1 [0002] DE 3638345 A1 [0002]
- DE 1278758 [0002] DE 1278758 [0002]
- DE 1955774 [0002] DE 1955774 [0002]
- DE 102008003026 A1 [0002] DE 102008003026 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010005665A DE102010005665A1 (en) | 2010-01-26 | 2010-01-26 | System for measuring torsion between two measuring points of measuring section in e.g. lorry, has polarization analyzer attached to optical waveguide at measuring point, where point is connected with another measuring point over waveguide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010005665A DE102010005665A1 (en) | 2010-01-26 | 2010-01-26 | System for measuring torsion between two measuring points of measuring section in e.g. lorry, has polarization analyzer attached to optical waveguide at measuring point, where point is connected with another measuring point over waveguide |
Publications (1)
Publication Number | Publication Date |
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DE102010005665A1 true DE102010005665A1 (en) | 2011-07-28 |
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DE102010005665A Withdrawn DE102010005665A1 (en) | 2010-01-26 | 2010-01-26 | System for measuring torsion between two measuring points of measuring section in e.g. lorry, has polarization analyzer attached to optical waveguide at measuring point, where point is connected with another measuring point over waveguide |
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DE (1) | DE102010005665A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016125730A1 (en) | 2016-12-27 | 2018-06-28 | fos4X GmbH | Device and method for measuring the torsion of a measuring object |
EP4194802A1 (en) * | 2021-12-08 | 2023-06-14 | Dr. Johannes Heidenhain GmbH | Sensor arrangement for detecting at least a first torsion of a rotor blade of a wind turbine |
US12031886B2 (en) | 2021-12-08 | 2024-07-09 | Dr. Johannes Heidenhain Gmbh | Sensor assembly for measuring at least a first torsion of a rotor blade of a wind turbine generator system |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1278758B (en) | 1964-12-22 | 1968-09-26 | Precitronic | Device for measuring the bending and torsional loads on a ship |
DE1955774A1 (en) | 1969-11-06 | 1971-05-13 | Olympia Werke Ag | Device for measuring torques |
DE2908752A1 (en) * | 1979-03-06 | 1980-09-18 | Max Planck Gesellschaft | OPTICAL TRANSMISSION FILTER |
EP0120999A2 (en) * | 1983-03-30 | 1984-10-10 | Licentia Patent-Verwaltungs-GmbH | Fibre-optic sensor for force and pressure measurements, as well as for monitoring and protection purposes |
EP0144509A2 (en) * | 1983-11-09 | 1985-06-19 | Polaroid Corporation | Fiber optic interferometer transducer |
DE3415855C2 (en) | 1984-04-28 | 1988-02-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | |
DE3638345A1 (en) | 1986-11-10 | 1988-05-19 | Felten & Guilleaume Energie | SETUP AND USE OF A WAVE GUIDE SENSOR FOR MINIMUM EXPANSION |
DE19705889C2 (en) | 1997-02-15 | 1999-12-09 | Daimler Chrysler Ag | Angle of rotation sensor |
DE102008003026A1 (en) | 2007-01-03 | 2008-08-14 | GM Global Technology Operations, Inc., Detroit | Laser sensor device and method for detecting a transmission shaft torque |
-
2010
- 2010-01-26 DE DE102010005665A patent/DE102010005665A1/en not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1278758B (en) | 1964-12-22 | 1968-09-26 | Precitronic | Device for measuring the bending and torsional loads on a ship |
DE1955774A1 (en) | 1969-11-06 | 1971-05-13 | Olympia Werke Ag | Device for measuring torques |
DE2908752A1 (en) * | 1979-03-06 | 1980-09-18 | Max Planck Gesellschaft | OPTICAL TRANSMISSION FILTER |
US4659923A (en) * | 1981-03-09 | 1987-04-21 | Polaroid Corporation | Fiber optic interferometer transducer |
EP0120999A2 (en) * | 1983-03-30 | 1984-10-10 | Licentia Patent-Verwaltungs-GmbH | Fibre-optic sensor for force and pressure measurements, as well as for monitoring and protection purposes |
EP0144509A2 (en) * | 1983-11-09 | 1985-06-19 | Polaroid Corporation | Fiber optic interferometer transducer |
DE3415855C2 (en) | 1984-04-28 | 1988-02-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | |
DE3638345A1 (en) | 1986-11-10 | 1988-05-19 | Felten & Guilleaume Energie | SETUP AND USE OF A WAVE GUIDE SENSOR FOR MINIMUM EXPANSION |
DE19705889C2 (en) | 1997-02-15 | 1999-12-09 | Daimler Chrysler Ag | Angle of rotation sensor |
DE102008003026A1 (en) | 2007-01-03 | 2008-08-14 | GM Global Technology Operations, Inc., Detroit | Laser sensor device and method for detecting a transmission shaft torque |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016125730A1 (en) | 2016-12-27 | 2018-06-28 | fos4X GmbH | Device and method for measuring the torsion of a measuring object |
WO2018122195A1 (en) | 2016-12-27 | 2018-07-05 | fos4X GmbH | Apparatus and method for measuring the torsion of a test object |
US10578427B2 (en) | 2016-12-27 | 2020-03-03 | fos4X GmbH | Apparatus and method for measuring the torsion of a test object |
EP4194802A1 (en) * | 2021-12-08 | 2023-06-14 | Dr. Johannes Heidenhain GmbH | Sensor arrangement for detecting at least a first torsion of a rotor blade of a wind turbine |
US12031886B2 (en) | 2021-12-08 | 2024-07-09 | Dr. Johannes Heidenhain Gmbh | Sensor assembly for measuring at least a first torsion of a rotor blade of a wind turbine generator system |
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