WO2022096244A1 - Dispositif et procédé de détermination de position spatiale d'un système de mesure infrarouge - Google Patents

Dispositif et procédé de détermination de position spatiale d'un système de mesure infrarouge Download PDF

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Publication number
WO2022096244A1
WO2022096244A1 PCT/EP2021/078357 EP2021078357W WO2022096244A1 WO 2022096244 A1 WO2022096244 A1 WO 2022096244A1 EP 2021078357 W EP2021078357 W EP 2021078357W WO 2022096244 A1 WO2022096244 A1 WO 2022096244A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
emitter
test object
reference point
determining
Prior art date
Application number
PCT/EP2021/078357
Other languages
German (de)
English (en)
Inventor
Benjamin Schlosser
Sven PROF. JÜTTNER
Original Assignee
Otto-Von-Guericke-Universität Magdeburg
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 Otto-Von-Guericke-Universität Magdeburg filed Critical Otto-Von-Guericke-Universität Magdeburg
Publication of WO2022096244A1 publication Critical patent/WO2022096244A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/48—Thermography; Techniques using wholly visual means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/034—Observing the temperature of the workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125—Weld quality monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/07—Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0896—Optical arrangements using a light source, e.g. for illuminating a surface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J2005/0077—Imaging

Definitions

  • the present invention is in the field of sensors.
  • it relates to a device and a method with the help of which the relative position of an infrared sensor (IR sensor) to its surroundings can be determined and which allow a spatial assignment of the data that has been recorded by the IR sensor from a test object.
  • IR sensor infrared sensor
  • NIR near IR range
  • thermography which is used in non-destructive testing in industry. Common uses include finding bugs that aren't visible from the outside.
  • the quality of the component is checked by measuring the surface temperature with an IR sensor, e.g. B. with an infrared camera. If there is a defect on or near the component surface that impedes heat conduction in the component, this is reflected in a locally changed surface temperature. So e.g. B. cold or hot spots or local changes in temperature gradients can be observed. The temperatures or the changes in temperature are measured using the IR sensor, e.g. B. with the Infrared camera captured. The temperature data can then be displayed visually as a thermogram (false color image).
  • thermography An example of industrial application is the quality inspection of weld seams using thermography. Testing during the manufacturing process is desirable for the quality control of weld seams. B. the ejection of defective components for rework or an immediate evaluation and possibly required changes to the process parameters in the event of deviations, so that costly rework can be avoided.
  • Defects that are not visible from the outside and that significantly impair the quality of a weld seam include insufficient penetration depth and lack of fusion.
  • So e.g. B. identifies the temperature field of the cooling surface of a weld as an externally detectable information carrier for assessing the internal quality of the weld.
  • the present invention relates to a device for determining the current position of a measurement point of an IR sensor on a test object, the device comprising an IR emitter and an IR sensor, the IR emitter serving as a stationary reference point for the IR sensor.
  • the relative movement between the IR sensor and the test object is measured in order to be able to trace the data back to the stationary IR emitter as a reference point.
  • the IR sensor or the test object or both can be moved for the measurement, provided that the relative movement is recorded.
  • the IR sensor can be guided along the area to be measured.
  • the IR emitter can be used as a reference point for determining the location of the data captured by the IR sensor.
  • the present invention relates to a method for determining the current position of a measuring point on a test object, wherein the
  • Measuring point is detected by an IR sensor and an IR emitter is used as a stationary reference point for determining the current position of the measuring point.
  • the IR emitter can be any means that emits IR radiation that can be detected by the IR sensor.
  • a simple glow wire, glow plug, incandescent lamp, heating cartridge or the like can be used.
  • Two or more IR emitters can also be used.
  • IR sensors that can record measurement data from test specimens emitting IR radiation can be used as IR sensors.
  • Examples are thermal imagers, thermal line scan cameras and pyrometers.
  • All components or the like that can be detected using IR sensors can be used as a test object.
  • FIG. 1 shows a schematic plan view of the structure of a device according to the invention and its use in the quality control of a weld seam
  • FIG. 2 shows the structure according to FIG. 1 in an isometric view.
  • Thermography monitored and controlled One example is the well-known gas-shielded metal (MAG) welding process for welding thin steel sheets.
  • MAG gas-shielded metal
  • insufficient penetration depth and lack of fusion at the weld seam of the metal sheets are common defects that cannot be seen from the outside.
  • the temperature profile of the weld seam obtained is recorded immediately after the welding process and z. B. shown as a thermogram, and evaluated.
  • an IR emitter 1 is provided according to the invention of the IR sensor 2, z. B. a thermal imaging camera, and forms a stationary reference point for determining the position of the measuring points of the IR sensor 2. Using this fixed reference point, the relative position of the measurement location of the IR sensor 2 in the area of the weld seam 3 can then be assigned spatially without any problems.
  • FIG. 1 shows an IR emitter 1 made up of three glow elements a, bc and a moveable thermal imaging camera as an IR sensor 2.
  • the thermal imaging camera 2 follows a welding torch 4, with which two metal sheets 5, 6 are welded and records the heat distribution in the area of the weld 3 immediately after the welding process.
  • the recorded IR data are then further processed in a known manner to evaluate the quality of the weld seam 3, e.g. b. using software programs available for this purpose.
  • the precise position of detected deviations in the measurement area of the weld seam 3 as the test object can be determined.
  • the invention is equally suitable for the connection welding shown in the example for monitoring other welding processes, such as. B. build-up welding or additive welding.
  • the device and method according to the invention are distinguished by their simplicity, since a simple incandescent element such as an incandescent wire is sufficient as a locally fixed IR emitter 1 . reference list

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Radiation Pyrometers (AREA)

Abstract

La présente invention se rapporte à un dispositif et à un procédé de détermination de position spatiale d'un système de mesure infrarouge. Le dispositif comprend un émetteur IR fixe (1) en tant que point de référence et un capteur IR (2). L'émetteur IR (1) est utilisé en tant que point de référence fixe pour la détermination de la position des points de mesure du capteur IR (2) sur un objet examiné, le point de mesure étant détecté au moyen du capteur IR (2) et la position en cours du point de mesure étant déterminée au moyen de l'émetteur IR (1) en tant que point de référence fixe par rapport au capteur IR (2).
PCT/EP2021/078357 2020-11-03 2021-10-13 Dispositif et procédé de détermination de position spatiale d'un système de mesure infrarouge WO2022096244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020128945.6A DE102020128945A1 (de) 2020-11-03 2020-11-03 Vorrichtung und Verfahren zur räumlichen Lagebestimmung eines Infrarotmesssystems
DE102020128945.6 2020-11-03

Publications (1)

Publication Number Publication Date
WO2022096244A1 true WO2022096244A1 (fr) 2022-05-12

Family

ID=78269623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/078357 WO2022096244A1 (fr) 2020-11-03 2021-10-13 Dispositif et procédé de détermination de position spatiale d'un système de mesure infrarouge

Country Status (2)

Country Link
DE (1) DE102020128945A1 (fr)
WO (1) WO2022096244A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177649B1 (en) * 1998-02-05 2001-01-23 Sollac Method and apparatus for regulating the position of a camera in a thermal control system for welding
DE102010014744A1 (de) * 2010-04-13 2011-10-13 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Projiezieren von Information auf ein Objekt bei Thermographie-Untersuchungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6177649B1 (en) * 1998-02-05 2001-01-23 Sollac Method and apparatus for regulating the position of a camera in a thermal control system for welding
DE102010014744A1 (de) * 2010-04-13 2011-10-13 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Projiezieren von Information auf ein Objekt bei Thermographie-Untersuchungen

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Publication number Publication date
DE102020128945A1 (de) 2022-05-05

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