KR20230018722A - Apparatus for measuring oil film thickness of coil strip - Google Patents

Apparatus for measuring oil film thickness of coil strip Download PDF

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KR20230018722A
KR20230018722A KR1020210100590A KR20210100590A KR20230018722A KR 20230018722 A KR20230018722 A KR 20230018722A KR 1020210100590 A KR1020210100590 A KR 1020210100590A KR 20210100590 A KR20210100590 A KR 20210100590A KR 20230018722 A KR20230018722 A KR 20230018722A
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oil film
film weight
value
steel plate
temperature
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KR102648759B1 (en
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이원희
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이원희
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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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
    • 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
    • G01B21/045—Correction of measurements
    • 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
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • 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
    • G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
    • 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
    • G01J5/80—Calibration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/8422—Investigating thin films, e.g. matrix isolation method
    • G01N2021/8427—Coatings

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Abstract

An objective of the present invention is to provide an oil film weight measuring apparatus for a steel plate which can correct a change of an oil film weight detection value in accordance with the material, steep type, and temperature of a steel plate. According to one embodiment of the present invention, the oil film weight measuring apparatus for a steel plate comprises: a detection part setting preset bending modulus, brightness, color value, illuminance, whiteness, temperature value, and oil type calibration curve constant values, and analyzing an image using a camera on the surface of the steel plate to detect the constant values; an oil film weight detection part emitting ultraviolet light and infrared light of the steel plate to measure absorption rate and fluorescence; and a control part correcting an oil film weight calibration curve in accordance with an oil film weight detection value from the oil film weight detection part and detection values from the detection part for the bending modulus, brightness, color value, illuminance, whiteness, and temperature value detected from the image to measure oil film weight.

Description

강판의 도유량 측정 장치{APPARATUS FOR MEASURING OIL FILM THICKNESS OF COIL STRIP} Steel sheet oil flow measurement device {APPARATUS FOR MEASURING OIL FILM THICKNESS OF COIL STRIP}

본 발명은 강판의 도유량 측정 장치에 관한 것이다.The present invention relates to a device for measuring the oil flow rate of a steel sheet.

일반적으로 강판의 압연공정시 강판의 녹의 방지를 위하여 방청유를 도포 한다.In general, anti-rust oil is applied to prevent rust of the steel sheet during the rolling process of the steel sheet.

도포공정시 방청유량의 미도유, 과도유는 제품의 도유 품질에 불량 요인으로 작용 하여 도유 강판의 소비자 불만이 증가 되며 산업의 자동화 공정에 미도유와 과도유로 막대한 영향을 주어 생산하는 제품의 품질 및 생산성을 저해 하고 있다.During the coating process, non-oiling or excessive oiling of the anti-rust oil acts as a defect factor in the oiling quality of the product, increasing consumer complaints about oiled steel sheets, and having a huge impact on the automation process of the industry due to non-oiling and excessive oiling, thereby reducing the quality and quality of products produced. It's hindering productivity.

이를 위해, 종래에는 강판의 도유량을 측정하였으나, 검량선 값 산출 작업을 위해서는 모든 품종 및 재질의 강판에 대한 샘플을 확보하여 수작업으로 하거나 반사율을 이용한 기술들을 적용하여 검량선 편차를 보정 하고 측정 하였으니 판의 진동,설비의 진동 등으로 인하여 안정된 반사량 값을 검출 할 수 없고 그로 인한 편차가 발생하여 도유량 측정장치 정합성 유지에 한계가 있다To this end, conventionally, the amount of oil applied to the steel plate was measured, but in order to calculate the calibration curve value, samples for steel plates of all types and materials were obtained manually or by applying techniques using reflectance to correct the deviation of the calibration curve and measure it. Due to vibration and equipment vibration, it is not possible to detect a stable reflectance value, and deviations occur due to it, so there is a limit to maintaining the consistency of the flow rate measuring device.

대한민국 등록특허공보 10-2245235호Republic of Korea Patent Registration No. 10-2245235

본 발명의 일 실시예에 따르면, 강판의 재질,강종에 따른 도유량 검출값의 변화를보정할 수 있는 강판의 도유량 측정 장치가 제공 된다.According to one embodiment of the present invention, an apparatus for measuring the amount of oil applied to a steel sheet capable of correcting a change in the detection value of the amount of oil applied according to the material and type of the steel sheet is provided.

상술한 본 발명의 과제를 해결하기 위하여, 본 발명의 일 실시 예에 따라 강판의 도유량 측정 장치에 카메라를 내장 또는 외장으로 설치 하여 자외선 또는 적외선 조사와 유무와관계없이 강판의 이미지를 측정 하여 강판의 굴곡,색상,명도,Lux,백색도등을 측정, 강판 표면의 물리적 상태를 파악, 자외선 혹은 적외선을 이용한 기름의량 측정시 유종의 검량선을 보정하여 도유랑을 측정 하는 제어부를 포함 할 수 있다.In order to solve the above-described problems of the present invention, according to an embodiment of the present invention, a camera is installed internally or externally in the device for measuring the oil flow rate of the steel sheet, and the image of the steel sheet is measured with or without ultraviolet or infrared irradiation to obtain a steel sheet It can include a control unit that measures curvature, color, brightness, Lux, whiteness, etc., grasps the physical state of the steel plate surface, and measures oil flow by correcting the calibration curve of the oil type when measuring the amount of oil using ultraviolet or infrared rays.

본 발명의 일 실시예에 따르면, 도유된 강판의 표면 상태와 상관없이 항상 일정한 도유 측정 결과를 얻을 수 있는 효과가 있다.According to one embodiment of the present invention, there is an effect of always obtaining a constant oiling measurement result regardless of the surface state of the oiled steel sheet.

도 1은 본 발명의 일 실시예에 따른 강판의 도유량 측정 장치의 개략적인 구성도 이다.
도 2는 본 발명의 일 실시예에 따른 강판의 도유량 측정 장치의 도유량 검출부 및 강판의 이미지검출부,강판의 온도검출부의 검출 값을 신호처리부를 통하여 도유량을 측정 하는 개략적인 구성도이다.
도 3은 본 발명의 일 실시예에 따른 강판의 도유량 측정 장치의 도유량 검출부 및 이미지,온도 검출부의 실물 도면이다.
도 4는 본 발명의 일 실시예에 따른 강판의 도유량 측정 장치의 이미지 및 온도 검량선 보정계수 파라메터를 나타내는 표이다.1 is a schematic configuration diagram of an apparatus for measuring oil flow rate of a steel sheet according to an embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of measuring the oil quantity through a signal processing unit for the detection values of the oil quantity detection unit, the image detection unit of the steel sheet, and the temperature detection unit of the steel sheet oil quantity measuring device according to an embodiment of the present invention.
3 is a real view of an oil flow rate detection unit and an image and temperature detection unit of a steel sheet oil flow rate measuring device according to an embodiment of the present invention.
4 is a table showing images and temperature calibration curve correction coefficient parameters of a device for measuring oil flow rate of a steel sheet according to an embodiment of the present invention.

첨부된 도면을 참조 하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 본 발명을 용의하게 실시 할 수 있도록 실시예를 상세히 설명 한다.With reference to the accompanying drawings, embodiments will be described in detail so that those skilled in the art can easily practice the present invention.

도1은 본 발명의 일 실시예에 따른 강판의 도유량 측정 장치의 개략 적인 구성도 이다.1 is a schematic configuration diagram of an apparatus for measuring oil flow rate of a steel sheet according to an embodiment of the present invention.

본 발명의 검출부 3개의 부분으로 구성 되어 지며 자외선적외선램프(112)제어부(111),카메라(120) 이미지검출부(121),적외선온도검출기(130) 온도 검출부(131)로 구성 되어진다.The detection unit of the present invention is composed of three parts, and is composed of an ultraviolet infrared lamp 112, a control unit 111, a camera 120, an image detection unit 121, an infrared temperature detector 130, and a temperature detection unit 131.

도3은 일 실시 예에 따른 강판의 도유량 측정 장치의 도유량 검출부 및 이미지,온도 검출부의 실물 도면이다.3 is a real view of an oil flow rate detection unit, an image, and a temperature detection unit of a steel sheet oil flow rate measuring device according to an embodiment.

자외선적외선램프(112)는 제어부(111)에 의하여 조사 되어 지는 자외선적외선램프(112)을 안정 되게 제어 하여 일정한 검출 값을 검출 하도록 되어 지는 부분이다.The ultraviolet infrared lamp 112 is a part that stably controls the ultraviolet infrared lamp 112 irradiated by the control unit 111 to detect a constant detection value.

검출된 검출값은 제어부(111)을 통하여 신호처리부(140)으로 전송 한다.The detected detection value is transmitted to the signal processing unit 140 through the control unit 111.

이때 신호처리부(140)의 측정값만으로는 도유량의 정합성이 확보 되지 않는다.At this time, the consistency of the oiling amount is not secured only by the measured value of the signal processing unit 140.

통상적인 실험실 조건에서는 주변 환경과 측정값 일정 하나 여러 공장에서 생산 되어 지는 강판의 종류는 업체별 표면의 물리적 상태가 상의 함으로 자외선적외선 제어부(111)에서 검출된 값을 정확한 도유량값 으로 표현 하기에는 어렵다.In normal laboratory conditions, the surrounding environment and measured values are constant, but the type of steel plate produced in various factories differs in the physical state of the surface of each company, so it is difficult to express the value detected by the ultraviolet infrared controller 111 as an accurate oil flow rate value.

강판의 표면은 도금량,도금형태,탄소성분의 함량,산세공정에서의 탈색정도에 따라 자외선,적외선의 검출값이 같은량의 기름을 측정 하더라도 강판의 표면의 물리적 특성에 따라 상의한 도유량 검출값이 검출 된다. The surface of the steel sheet has the detection value of ultraviolet and infrared rays according to the amount of coating, the type of coating, the content of carbon component, and the degree of discoloration in the pickling process. this is detected

본 발명은 이러한 문제점들을 해결 하기 위하여 카메라(120),온도계(130)을 적용하여 강판의 물리적 상태를 비접촉으로 분석 할 수 있도록 하였다.In order to solve these problems, the present invention applies a camera 120 and a thermometer 130 to analyze the physical state of the steel sheet in a non-contact manner.

온도계(130)은 자외선적외선 정량 분석 시 온도에 따라 분자의 활성도가 상의하다.The thermometer 130 determines the activity of molecules according to the temperature during quantitative analysis of ultraviolet and infrared rays.

동일한 량의 오일을 반복 측정 시 온도의 변화를 가하면 그 검출값이 상의하게 검출 됨으로 온도의 보상값을 보정해주어야 정확한 도유값을 검출 할 수 있다.When the same amount of oil is repeatedly measured, if a change in temperature is applied, the detected value is detected differently, so the compensation value of the temperature must be corrected to detect the accurate oil value.

카메라(120)는 강판의 표면을 정지영상 또는 동영상으로 이미지를 연속 저장 하여 이미지 검출부(121)로 전송 하게 되어 지며 이미지검출부(121)는 획득한 영상의 픽셀의 정보를 이용, 국제조명위원회 CIE　Lab에 의거 굴곡율,색상값,명도값,조도값,백색도값를 축출 강판 표면의 물리적 특성을 실시간으로 신호처리부(140)로 전송 한다.The camera 120 continuously stores images of the surface of the steel plate as still images or moving images and transmits them to the image detection unit 121, and the image detection unit 121 uses pixel information of the acquired image, and Based on the curvature, color value, brightness value, roughness value, and whiteness value, the physical characteristics of the surface of the steel sheet are transmitted to the signal processing unit 140 in real time.

적외선온도검출기(130)을 강판의 온도를 비 접촉으로 측정 하여 현재의 강판의 온도를 실시간으로 측정 하며 온도검출부(131)를 통하여 신호처리부(140)으로 전송 한다.The infrared temperature detector 130 measures the temperature of the steel sheet in a non-contact manner, measures the current temperature of the steel sheet in real time, and transmits the temperature to the signal processing unit 140 through the temperature detector 131.

연산제어부(150)에 이미 실험실에서 확보한 유종의 검량선값과 3개의 부분(자외선적외선검출부(110),카메라(120),적외선온도검출기(130) 검출값은 도4번과 같이 보장 파라메타를 설정 하여 도유량 측정값을 보정 한다.In the operation control unit 150, the calibration curve value of the oil type already secured in the laboratory and the detection value of the three parts (ultraviolet infrared detector 110, camera 120, and infrared temperature detector 130) set guaranteed parameters as shown in FIG. to correct the measured value of the oil flow rate.

공식은 도유량값= 유종검량선ⅹ굴곡율ⅹ색상ⅹ명도ⅹ조도ⅹ백색도+offsetThe formula is oil flow rate = oil type calibration curve x curvature x color x brightness x roughness x whiteness + offset

항목별 파라메타값에 따라 검량선 보정값이 증감 하도록 구성되어진다.It is configured so that the calibration curve correction value increases or decreases according to the parameter value for each item.

100 : 도유량측정장치
111 : 광원 및 자외선,적외선 제어부
112 : 광원
120 : 카메라
121 : 이미지 분석 검출기
130 : 적외선 온도계
131 : 온도 검출부
140 : 광원값,이미지,온도 데이타 신호 처리부
150 : 연산 제어부(측정 데이타 파라메타 보정부)100: flow rate measuring device
111: light source and ultraviolet, infrared control
112: light source
120: camera
121: image analysis detector
130: infrared thermometer
131: temperature detection unit
140: light source value, image, temperature data signal processing unit
150: calculation control unit (measured data parameter correction unit)

Claims (2)

강판 표면의 굴곡율,색상값,명도율,조도값,백색도값등을 물리적 상태를 CCD를 적용 카메라를 이용한 이미지를 분석하는 검출부;
상기 강판의 표면의 온도에 따른 편차를 감소하기 위해 비접촉 적외선 온도계를 장치에 내장하여 온도를 검출 하는 적외선 온도 검출부;
상기 이미지를 통해 검출한 굴곡율,색상값,명도율,조도값,백색도율,온도값에 따른 측정 편차도 보정 하는 강판의 도유량 측정 장치.
A detection unit that analyzes physical conditions such as curvature, color, brightness, illuminance, and whiteness of the surface of the steel plate using a CCD-applied camera;
an infrared temperature detection unit for detecting temperature by incorporating a non-contact infrared thermometer into the device in order to reduce the deviation according to the temperature of the surface of the steel sheet;
A device for measuring the flow rate of a steel sheet that also corrects measurement deviations according to curvature, color, brightness, roughness, whiteness, and temperature values detected through the image.
 제1항에 있어서,
상기 자외선,적외선을 이용한 도유량 측정 장치
According to claim 1,
Oil flow rate measuring device using the ultraviolet and infrared rays
KR1020210100590A 2021-07-30 2021-07-30 Apparatus for measuring oil film thickness of coil strip KR102648759B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102660681B1 (en) * 2023-10-05 2024-04-25 이원희 Apparatus for measuring oil film thickness of coil strip

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100797260B1 (en) * 2005-12-26 2008-01-23 주식회사 포스코 Method for measuring oil layer of strip
KR20210035975A (en) * 2019-09-25 2021-04-02 주식회사 코아칩스 Painting Quality Management Apparatus and Method Using Thermal Image
KR102245235B1 (en) 2019-12-16 2021-04-28 주식회사 포스코 Apparatus for measuring oil film thickness of coil strip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100797260B1 (en) * 2005-12-26 2008-01-23 주식회사 포스코 Method for measuring oil layer of strip
KR20210035975A (en) * 2019-09-25 2021-04-02 주식회사 코아칩스 Painting Quality Management Apparatus and Method Using Thermal Image
KR102245235B1 (en) 2019-12-16 2021-04-28 주식회사 포스코 Apparatus for measuring oil film thickness of coil strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102660681B1 (en) * 2023-10-05 2024-04-25 이원희 Apparatus for measuring oil film thickness of coil strip

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