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1. WO2016139155 - DEVICE AND METHOD FOR MEASURING THE DIAMETER AND/OR THE WALL THICKNESS OF A STRAND

Publication Number WO/2016/139155
Publication Date 09.09.2016
International Application No. PCT/EP2016/054162
International Filing Date 26.02.2016
IPC
G01B 11/06 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
02for measuring length, width, or thickness
06for measuring thickness
G01N 21/3581 2014.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
35using infra-red light
3581using far infra-red light; using Terahertz radiation
CPC
G01B 11/0625
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
02for measuring length, width or thickness
06for measuring thickness, e.g. of sheet material
0616of coating
0625with measurement of absorption or reflection
G01J 5/10
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
5Radiation pyrometry
10using electric radiation detectors
G01N 21/3581
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
35using infra-red light
3581using far infra-red light; using Terahertz radiation
Applicants
  • SIKORA AG [DE]/[DE]
Inventors
  • SIKORA, Harald
Agents
  • HAUCK PATENTANWALTSPARTNERSCHAFT MBB
Priority Data
10 2015 103 063.203.03.2015DE
10 2015 116 234.225.09.2015DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VORRICHTUNG UND VERFAHREN ZUM MESSEN DES DURCHMESSERS UND/ODER DER WANDDICKE EINES STRANGS
(EN) DEVICE AND METHOD FOR MEASURING THE DIAMETER AND/OR THE WALL THICKNESS OF A STRAND
(FR) DISPOSITIF ET PROCÉDÉ DE MESURE DU DIAMÈTRE ET/OU DE L'ÉPAISSEUR DE PAROI D'UNE BARRE DE COULÉE
Abstract
(DE)
Die Erfindung betrifft eine Vorrichtung zum Messen des Durchmessers und/oder der Wanddicke eines im Querschnitt im Wesentlichen kreisförmigen und mittels Führungsmitteln in Richtung seiner Längsachse durch die Vorrichtung geführten Strangs, umfassend mindestens einen Sender zum Aussenden von Terahertzstrahlung, wobei mindestens eine Strahlungsoptik vorgesehen ist, die von dem Sender ausgesandte Terahertzstrahlung auf einen durch die Vorrichtung geführten Strang leitet, wobei mindestens einem Sender gegenüberliegend in Strahlungsrichtung der von dem mindestens einen Sender ausgesandten Terahertzstrahlung hinter dem Strang ein Reflektor für die Terahertzstrahlung angeordnet ist, weiter umfassend mindestens einen Empfänger zum Empfangen der von dem mindestens einen Sender ausgesandten und an dem Strang und/oder an dem Reflektor reflektierten Terahertzstrahlung, und umfassend eine Auswerteeinrichtung, die dazu ausgebildet ist, anhand der von dem mindestens einen Empfänger empfangenen Messsignale den Durchmesser und/oder die Wanddicke des Strangs zu bestimmen. Die Erfindung betrifft außerdem ein entsprechendes Verfahren.
(EN)
The invention relates to a device for measuring the diameter and/or the wall thickness of a strand, which is substantially circular in cross-section and which is guided through the device in the direction of the longitudinal axis of the strand by means of guiding means, comprising at least one transmitter for emitting terahertz radiation, wherein at least one radiation optical unit is provided, which conducts terahertz radiation emitted by the transmitter to a strand guided through the device, wherein a reflector for the terahertz radiation is arranged opposite at least one transmitter and is arranged behind the strand in the radiation direction of the terahertz radiation emitted by the at least one transmitter, and also comprising at least one receiver for receiving the tetahertz radiation emitted by the at least one transmitter and reflected on the strand and/or on the reflector, and comprising an evaluating apparatus, which is designed to determine the diameter and/or the wall thickness of the strand on the basis of the measurement signals received by the at least one receiver. The invention further relates to a corresponding method.
(FR)
L'invention concerne un dispositif de mesure du diamètre et/ou de l'épaisseur de paroi d'une barre de coulée, de section transversale sensiblement circulaire, qui est guidée à travers le dispositif à l’aide de moyens de guidage dans la direction de son axe longitudinal, lequel dispositif comprend au moins un émetteur destiné à émettre un rayonnement téraherzien. Au moins un système optique de rayonnement sert à diriger le rayonnement téraherzien émis sur une barre de coulée guidée à travers le dispositif. Un réflecteur de rayonnement térahertzien est disposé à l'opposé d’au moins un émetteur et derrière la barre de coulée dans la direction du rayonnement térahertzien émis par le ou les émetteurs. Le dispositif comprend en outre au moins un récepteur destiné à recevoir le rayonnement térahertzien émis par le ou les émetteurs et réfléchi par la barre de coulée et/ou le réflecteur et comprend un dispositif d'évaluation qui est conçu pour déterminer le diamètre et/ou l'épaisseur de paroi de la barre de coulée à partir des signaux de mesure reçus par le ou les récepteurs. L'invention concerne également un procédé correspondant.
Also published as
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