WO2016089091A1 - Device for inspecting quality of thermal imaging and method for inspecting quality of thermal imaging using same - Google Patents

Device for inspecting quality of thermal imaging and method for inspecting quality of thermal imaging using same Download PDF

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Publication number
WO2016089091A1
WO2016089091A1 PCT/KR2015/013009 KR2015013009W WO2016089091A1 WO 2016089091 A1 WO2016089091 A1 WO 2016089091A1 KR 2015013009 W KR2015013009 W KR 2015013009W WO 2016089091 A1 WO2016089091 A1 WO 2016089091A1
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WO
WIPO (PCT)
Prior art keywords
sealer
sealer coating
quality inspection
thermal image
photographing
Prior art date
Application number
PCT/KR2015/013009
Other languages
French (fr)
Korean (ko)
Inventor
김남훈
오영광
주익찬
김동철
김형규
양희종
Original Assignee
울산과학기술원
주식회사 아이티스타
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Publication of WO2016089091A1 publication Critical patent/WO2016089091A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
    • 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
    • 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
    • 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
    • G01N21/8806—Specially adapted optical and illumination features
    • 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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection

Definitions

  • the present invention relates to a sealer coating quality inspection apparatus and a sealer coating quality inspection method using the same.
  • the definition of defects and good products for the sealer application process is made with or without sealer application.
  • the quality inspection for the sealer application is using a 2D camera.
  • the present invention is to propose a sealer coating quality inspection apparatus and a sealer coating quality inspection method using the same can be carried out a quality inspection for the sealer coating operation using a thermal imaging camera.
  • the sealer coating quality inspection method of the present invention comprises the steps of photographing a sealer coating portion with at least one thermal imaging camera in a method in which the sealer coating quality inspection apparatus inspects the quality of the sealer coating portion in a manufacturing process, the at least one thermal image Analyzing the thermal image captured by the camera, and performing a quality inspection on the sealer applying operation using the analysis result of the thermal image.
  • the photographing may include dividing the sealer coating portion into a plurality of parts to set a photographing area for each part, and photographing a thermal image for each of the subdivided photographing areas.
  • Analyzing the thermal image may include measuring a temperature of a sealer coating portion using the thermal image.
  • the analyzing of the thermal image may further include correcting a distortion of the thermal image and correcting an error of an analysis region.
  • the performing of the quality inspection may include inspecting the quality using the temperature of the sealer coating part measured for each photographing area.
  • a seal inspection of the sealer is applied, and whether or not there is a broken portion based on the center line of the sealer application progress direction by using the temperature information measured for each photographing area, the pass or fail of the product quality Determining whether or not.
  • the checking of the quality may include measuring the width of the application of the sealer in a direction perpendicular to the direction in which the sealer is applied and inspecting the length of the width of the application of the sealer.
  • the checking of the length of the width to which the sealer is applied may include setting a center line along a sealer application direction, calculating a slope of temperature data in the left and right directions at the center line, and determining the temperature data in the left and right directions.
  • the method may include finding left and right positions having a maximum gradient change value and calculating a length at the maximum left and right positions to calculate a width to which a sealer is applied.
  • the method may further include photographing a portion to which the sealer is to be applied before obtaining the sealer application, and obtaining a thermal image of the portion to which the sealer is to be applied, and performing the quality inspection.
  • the inspection may include comparing the temperature analyzed from the thermal image of the portion to which the sealer is to be photographed before the sealer is applied with the temperature analyzed from the thermal image photographed after the sealer is applied. Can be.
  • the sealer coating quality inspection apparatus of the present invention uses a collecting unit for collecting a thermal image of the sealer coating portion photographed by a photographing unit, an analyzing unit for analyzing the collected thermal image, and an analysis result of the thermal image.
  • a quality inspection part which performs quality inspection about a sealer coating operation is included.
  • the photographing unit includes at least one thermal imaging camera, and photographs a sealer coating portion by two thermal imaging cameras, and an angle between the sealer coating portions photographed by each of the thermal imaging cameras may differ by a predetermined angle or more.
  • the collection unit may divide the sealer coating part into a plurality of parts, set a photographing area for each part, and control the photographing part to photograph a thermal image for each photographing area.
  • the analysis unit may measure the temperature of the sealer coating portion using the thermal image.
  • the said quality inspection part can perform the cut-off test of sealer application
  • the said quality inspection part can perform the width
  • the present invention through the data analysis using the thermal image taken by the thermal imaging camera, by performing a quality inspection for the sealer coating operation between the whole product, to provide an environment that can perform a quality inspection for the sealer coating operation do.
  • FIG. 1 is a view schematically showing the structure of a sealer coating quality inspection apparatus according to an embodiment of the present invention.
  • FIG. 2 illustrates an overall system structure for performing a quality check on sealer application on a manufacturing process in accordance with one embodiment of the present invention.
  • FIG 3 is a view showing an example in which the sealer coating quality inspection apparatus subdivides the inspection area according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an example of performing a disconnection test according to an exemplary embodiment of the present invention.
  • FIG. 5 is a flowchart schematically illustrating a process of inspecting a sealer coating quality by a sealer coating quality inspecting apparatus according to an exemplary embodiment of the present invention.
  • ... unit means a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.
  • FIG. 1 is a view schematically showing the structure of a sealer coating quality inspection apparatus according to an embodiment of the present invention.
  • the sealer coating quality inspection apparatus only shows a schematic configuration necessary for description according to an embodiment of the present invention, but is not limited to this configuration.
  • Sealer coating quality inspection apparatus performs a quality inspection for the sealer coating operation of the entire sealer coating product through the data analysis using a thermal imaging camera, and evaluates the quality by analyzing and classifying the sealer coating temperature do.
  • a process in which the sealer coating quality inspection apparatus analyzes the sealer coating process of the sunroof in the automobile production process according to an embodiment of the present invention and checks the quality will be described as an example.
  • the sealer coating quality inspection apparatus 100 of the present invention includes a photographing unit 110, a collecting unit 120, an analyzing unit 130, and a quality inspecting unit 140.
  • the photographing unit 110 photographs the sealer coating portion in the sealer applying process to obtain a thermal image.
  • the photographing unit 110 includes at least one thermal imaging camera 112 according to an embodiment of the present invention.
  • the thermal imaging camera 112 is not visible to the human eye, infrared rays may be used to investigate the difference in temperature existing in the object.
  • the sealer coating quality inspection apparatus 100 may photograph a portion to which the sealer is to be applied to the photographing unit 110 in advance, and obtain a thermal image of the portion to which the sealer is to be applied.
  • the sealer coating quality inspection apparatus 100 compares the temperature analyzed from the thermal image of the portion to which the sealer is photographed before the sealer is applied with the temperature analyzed from the thermal image photographed after the sealer is applied. Quality inspection can be done.
  • Sealer coating quality inspection apparatus 100 requires two or more thermal imaging cameras to inspect the quality of the product using the thermal imaging camera in the sunroof sealer coating process. This is to prevent problems that may occur due to image distortion and to improve reliability of the inspection result.
  • the photographing unit 100 may photograph the sealer coating portion with the two thermal imaging cameras 112 according to the exemplary embodiment of the present invention.
  • the angle between the sealer coating portions photographed by each of the two thermal imaging cameras may differ by more than a predetermined angle. This is because it is difficult to trust the quality inspection result with the thermal image captured by the thermal camera when the portion photographed by the thermal imaging camera is at a certain angle or more.
  • the sealer coating quality inspection apparatus 100 arranges the cameras in front of and behind the product so as to obtain an accurate thermal image even within a corresponding angle of the camera, and sets two or more cameras. You can decide more than that.
  • the sealer coating quality inspection apparatus 100 divides the sealer coating portion into a plurality of parts, sets a photographing area for each part, and the imaging unit 110 divides the thermal image for each photographing area. Shoot the image.
  • the collecting unit 120 collects a thermal image of the sealer coating portion photographed by the photographing unit 110.
  • the collecting unit 120 may divide the sealer coating portion into a plurality of parts to set a capturing area for each part, and control the capturing unit to capture a thermal image for each capturing area.
  • the collection unit 120 includes a distortion correction unit 122 according to an embodiment of the present invention.
  • the distortion corrector 122 corrects the distortion of the thermal image and corrects an error of the analysis region.
  • the analyzer 130 analyzes the thermal image collected by the collector 120, and provides the analyzed data to the quality inspector 140.
  • the analysis unit 130 includes a temperature analysis unit 132 for measuring the temperature of the sealer coating portion using the thermal image according to an embodiment of the present invention.
  • the quality inspecting unit 140 performs quality inspection on the sealer coating operation using the analysis result of the thermal image.
  • the quality inspecting unit 140 performs quality inspection by using the temperature of the sealer coating portion measured for each photographing area.
  • the quality inspecting unit 140 includes a disconnection inspecting unit 142 and a width inspecting unit 144 according to an embodiment of the present invention.
  • the disconnection inspection unit 142 performs a disconnection inspection of the sealer application to confirm whether or not there is a broken portion based on the center line in the sealer application advancing direction.
  • the disconnection inspection unit 142 determines whether the product quality is passed or failed by inspecting whether there is a broken portion based on the center line of the sealer application direction using the temperature information measured for each photographing area.
  • the width inspection part 144 performs the width
  • the width inspection unit 144 measures the width of the sealer coating in a direction perpendicular to the direction of the sealer application, and inspects the length of the width on which the sealer is applied.
  • variety test part 144 sets a center line along a sealer application
  • the width inspecting unit 144 may find left and right positions where the gradient change value of the temperature data is a maximum value in the left and right directions, and calculate a width at which the sealer is applied by calculating a length at the maximum left and right positions.
  • the sealer coating quality inspection apparatus 100 may transmit data collected from the thermal imaging camera to a server using a device such as a PLC, a network, a kiosk PC, or the like.
  • the sealer coating quality inspection apparatus 100 if the quality test result of the product is passed, express the pass result on the field kiosk PC monitor, the operator can recognize the quality test result of the product. Make sure And, if the quality inspection result is not satisfied, not only express the failure result on the kiosk PC monitor, but also by beeping, the operator can recognize the quality inspection result and react quickly.
  • FIG. 2 illustrates an overall system structure for performing a quality check on sealer application on a manufacturing process in accordance with one embodiment of the present invention.
  • the sealer coating quality inspection apparatus 100 photographs the sealer coating results of the front and rear portions of the product using two thermal imaging cameras.
  • the reason why the product is divided into pieces is to prevent the reliability of the quality result from being lowered due to distortion caused by the photographing angle of the camera and the product.
  • product quality analysis uses the captured image of the product fixed on the pallet. This is because a position error between a preset analysis region based on 4D data and an image of a photographed product may occur. In addition, such an error may significantly affect the reliability of the result of the quality analysis. Accordingly, in the image captured by the 3D CAD information and the thermal imaging camera, the set analysis area and the analysis area setting error of the photographed product are found and corrected.
  • FIG 3 is a view showing an example in which the sealer coating quality inspection apparatus subdivides the inspection area according to an embodiment of the present invention.
  • the sealer coating quality inspection apparatus 100 subdivides the inspection area in order to efficiently express the product quality inspection. This is to allow the operator or inspector to identify the location of the product when the product is defective, and to check whether the product can be corrected and supplemented immediately at the site, or whether the product cannot be responded at the site. In addition, it is to help confirm whether the defective product due to the problem of the machine by checking the more accurate failure position when the continuous failure determination.
  • FIG. 4 is a diagram illustrating an example of performing a disconnection test according to an exemplary embodiment of the present invention.
  • the disconnection inspection is to check whether there is any part of the product which is broken while the sealer is applied.
  • Sealer coating quality inspection apparatus 100 according to an embodiment of the present invention, as shown in Figure 4, by inspecting the presence of the broken portion, based on the center line, to determine whether or not the pass inspection.
  • the sealer coating quality inspection apparatus 100 may perform a width inspection.
  • the width inspection is to inspect the length of the applied width vertically in the center of the applied sealer.
  • the width test calculates the length of the part applied by sealing in the vertical direction of the center line as shown in the example of the break test to determine whether the width test is passed or failed.
  • the width test calculates the slope of the left and right temperature data at the center line, and calculates the left and right lengths by finding a position where the change in the left and right slopes decreases from the maximum value. The length at this time becomes the width length of the position.
  • the sealer coating quality inspection apparatus 100 performs a fine break inspection.
  • the fine break test compares 21 pixels of the before and after relative maximum temperature graphs to examine a specific pattern. For example, each temperature point is represented by T (1)...
  • T (i) (where i is the end point number)
  • the fine disconnection test temperature position is n
  • FIG. 5 is a flowchart schematically illustrating a process of inspecting a sealer coating quality by a sealer coating quality inspecting apparatus according to an exemplary embodiment of the present invention. The following flowchart is described using the same reference numerals in connection with the configuration of FIGS. 1 to 4.
  • the sealer coating quality inspection apparatus 100 photographs a thermal image of a coating portion with a thermal image camera in real (S102).
  • the sealer coating quality inspection apparatus 100 divides the sealer coating portion into a plurality of pieces, sets a photographing area for each part, and photographs a thermal image for each subdivided photographing area.
  • the sealer coating quality inspection apparatus 100 collects the thermal image, corrects the thermal image distortion, and loads the analysis region (S104 and S106).
  • the sealer coating quality inspection apparatus 100 determines whether there is an error in the analysis area, and when there is no error, inspects the defective pattern (S108, S110).
  • the sealer coating quality inspection apparatus 100 measures the temperature of the sealer coating portion using the thermal image, and inspects the quality using the temperature measurement result.
  • the sealer coating quality inspection apparatus 100 performs a cut inspection of the sealer coating, a length inspection of the width to which the sealer is applied, and a fine cut inspection.
  • the sealer coating quality inspection apparatus 100 determines whether the pass or fail is based on the inspection result, and provides it to the user (S112).
  • the sealer coating quality inspection apparatus performs a quality inspection on the sealer coating operation between all the products of the product through data analysis using the thermal image taken by the thermal imaging camera. Provide an environment where quality inspections can be conducted.
  • the embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded.
  • a recording medium can be executed not only in the server but also in the user terminal.

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Abstract

A method for inspecting the quality of a sealer application, according to the present invention, is a method for a device for inspecting the quality of a sealer application to inspect the quality of a part where sealer was applied in a manufacturing process, the method comprising the steps of: photographing, using at least one or more thermal imaging camera, a part where sealer was applied; analyzing a thermographic image photographed using the at least one or more thermal imaging camera; and inspecting the quality of the sealer application work by using the analysis results of the thermographic image.

Description

열화상 품질 검사 장치 및 이를 이용한 열화상 품질 검사 방법Thermal image quality inspection device and thermal image quality inspection method using the same
본 발명은 실러 도포 품질 검사 장치 및 이를 이용한 실러 도포 품질 검사 방법에 관한 것이다.The present invention relates to a sealer coating quality inspection apparatus and a sealer coating quality inspection method using the same.
현재 실러 도포 공정에 대한 불량 및 양품의 정의는 실러 도포 유무로 이루어진다. 그리고, 실러 도포에 대한 품질 검사는 2D 카메라를 사용하고 있다.The definition of defects and good products for the sealer application process is made with or without sealer application. The quality inspection for the sealer application is using a 2D camera.
하지만, 2D 카메라는 로봇 툴에 고정되어 있으므로, 코너 구간의 검사가 제대로 이루어지지 않는 단점이 있다.However, since the 2D camera is fixed to the robot tool, the corner section is not properly inspected.
따라서, 열화상 카메라를 이용하여 실러 도포 부분의 전체 구간을 검사할 수 있는 품질검사 프로세스가 필요한 실정이다.Therefore, there is a need for a quality inspection process capable of inspecting the entire section of the sealer coating portion using a thermal imaging camera.
본 발명은 열화상 카메라를 이용하여 실러 도포 작업에 대한 품질 검사를 실시할 수 있는 실러 도포 품질 검사 장치 및 이를 이용한 실러 도포 품질 검사 방법을 제안하고자 한다.The present invention is to propose a sealer coating quality inspection apparatus and a sealer coating quality inspection method using the same can be carried out a quality inspection for the sealer coating operation using a thermal imaging camera.
본 발명의 실러 도포 품질 검사 방법은 실러 도포 품질 검사 장치가 제조 공정상에서 실러 도포 부분의 품질을 검사하는 방법에서, 적어도 하나 이상의 열화상 카메라로 실러 도포 부분을 촬영하는 단계, 상기 적어도 하나 이상의 열화상 카메라로 촬영된 열화상 이미지를 분석하는 단계, 그리고 상기 열화상 이미지의 분석 결과를 이용해서 실러 도포 작업에 대한 품질 검사를 실시하는 단계를 포함한다.The sealer coating quality inspection method of the present invention comprises the steps of photographing a sealer coating portion with at least one thermal imaging camera in a method in which the sealer coating quality inspection apparatus inspects the quality of the sealer coating portion in a manufacturing process, the at least one thermal image Analyzing the thermal image captured by the camera, and performing a quality inspection on the sealer applying operation using the analysis result of the thermal image.
상기 촬영하는 단계는, 상기 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하는 단계, 그리고 세분화된 상기 촬영 영역 별로 열화상 이미지를 촬영하는 단계를 포함할 수 있다.The photographing may include dividing the sealer coating portion into a plurality of parts to set a photographing area for each part, and photographing a thermal image for each of the subdivided photographing areas.
상기 열화상 이미지를 분석하는 단계는, 상기 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정하는 단계를 포함할 수 있다.Analyzing the thermal image may include measuring a temperature of a sealer coating portion using the thermal image.
상기 열화상 이미지를 분석하는 단계는, 상기 열화상 이미지의 왜곡을 보정하는 단계, 그리고 분석 영역의 오차를 수정하는 단계를 더 포함할 수 있다.The analyzing of the thermal image may further include correcting a distortion of the thermal image and correcting an error of an analysis region.
상기 품질 검사를 실시하는 단계는, 촬영 영역 별로 측정된 실러 도포 부분의 온도를 이용해서 품질을 검사하는 단계를 포함할 수 있다.The performing of the quality inspection may include inspecting the quality using the temperature of the sealer coating part measured for each photographing area.
상기 품질을 검사하는 단계는, 실러 도포의 끊김 검사를 실시하며, 촬영 영역 별로 측정된 온도 정보를 이용해서 실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 검사하여 제품 품질의 합격 또는 불합격 여부를 결정하는 단계를 포함할 수 있다.In the step of inspecting the quality, a seal inspection of the sealer is applied, and whether or not there is a broken portion based on the center line of the sealer application progress direction by using the temperature information measured for each photographing area, the pass or fail of the product quality Determining whether or not.
상기 품질을 검사하는 단계는, 실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하며, 실러가 도포된 폭의 길이를 검사하는 단계를 포함할 수 있다.The checking of the quality may include measuring the width of the application of the sealer in a direction perpendicular to the direction in which the sealer is applied and inspecting the length of the width of the application of the sealer.
상기 실러가 도포된 폭의 길이를 검사하는 단계는, 실러 도포 진행 방향을 따라 중심선을 설정하는 단계, 상기 중심선에서 좌우 방향의 온도 데이터의 기울기를 계산하는 단계, 그리고 상기 좌우 방향에서 상기 온도 데이터의 기울기 변화 값이 최대값인 좌우 위치들을 찾고, 상기 최대값인 상기 좌우 위치에서 길이를 계산하여 실러가 도포된 폭을 계산하는 단계를 포함할 수 있다.The checking of the length of the width to which the sealer is applied may include setting a center line along a sealer application direction, calculating a slope of temperature data in the left and right directions at the center line, and determining the temperature data in the left and right directions. The method may include finding left and right positions having a maximum gradient change value and calculating a length at the maximum left and right positions to calculate a width to which a sealer is applied.
상기 실러 도포 부분을 촬영하는 단계 이전에는, 실러 도포가 되기 전에 실러가 도포될 부분을 촬영하고, 실러가 도포될 부분의 열화상 이미지를 획득하는 단계를 더 포함하며, 상기 품질 검사를 실시하는 단계는, 실러가 도포되기 전에 촬영한 상기 실러가 도포될 부분의 열화상 이미지로부터 분석한 온도와, 실러가 도포된 후에 촬영한 열화상 이미지로부터 분석한 온도를 비교해서 검사를 실시하는 단계를 포함할 수 있다.Before the photographing of the sealer application portion, the method may further include photographing a portion to which the sealer is to be applied before obtaining the sealer application, and obtaining a thermal image of the portion to which the sealer is to be applied, and performing the quality inspection. The inspection may include comparing the temperature analyzed from the thermal image of the portion to which the sealer is to be photographed before the sealer is applied with the temperature analyzed from the thermal image photographed after the sealer is applied. Can be.
본 발명의 실러 도포 품질 검사 장치는 촬영부에서 촬영된 실러 도포 부분의 열화상 이미지를 수집하는 수집부, 상기 수집된 열화상 이미지를 분석하는 분석부, 그리고 상기 열화상 이미지의 분석 결과를 이용해서 실러 도포 작업에 대한 품질 검사를 실시하는 품질 검사부를 포함한다.The sealer coating quality inspection apparatus of the present invention uses a collecting unit for collecting a thermal image of the sealer coating portion photographed by a photographing unit, an analyzing unit for analyzing the collected thermal image, and an analysis result of the thermal image. A quality inspection part which performs quality inspection about a sealer coating operation is included.
상기 촬영부는, 적어도 하나 이상의 열화상 카메라를 포함하며, 2대의 열화상 카메라로 실러 도포 부분을 촬영하며, 각각의 열화상 카메라가 촬영하는 실러 도포 부분간의 각도가 소정 각도이상 차이날 수 있다.The photographing unit includes at least one thermal imaging camera, and photographs a sealer coating portion by two thermal imaging cameras, and an angle between the sealer coating portions photographed by each of the thermal imaging cameras may differ by a predetermined angle or more.
상기 수집부는, 상기 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하고, 상기 촬영부가 상기 촬영 영역 별로 열화상 이미지를 촬영하도록 제어할 수 있다.The collection unit may divide the sealer coating part into a plurality of parts, set a photographing area for each part, and control the photographing part to photograph a thermal image for each photographing area.
상기 분석부는, 상기 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정할 수 있다.The analysis unit may measure the temperature of the sealer coating portion using the thermal image.
상기 품질 검사부는, 실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 확인하는 실러 도포의 끊김 검사를 실시할 수 있다.The said quality inspection part can perform the cut-off test of sealer application | confirmation which determines whether there is a part cut off with respect to the center line of a sealer application | coating progress direction.
상기 품질 검사부는, 실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하는 폭 검사를 실시할 수 있다.The said quality inspection part can perform the width | variety test which a sealer measures the width | variety of application | coating in the direction perpendicular | vertical to a sealer application | coating advancing direction.
본 발명에 따르면, 열화상 카메라로 촬영한 열화상 이미지를 이용한 데이터 분석을 통해, 제품 전구간의 실러 도포 작업에 대한 품질 검사를 실시함으로써, 실러 도포 작업에 대한 품질 검사를 실시할 수 있는 환경을 제공한다.According to the present invention, through the data analysis using the thermal image taken by the thermal imaging camera, by performing a quality inspection for the sealer coating operation between the whole product, to provide an environment that can perform a quality inspection for the sealer coating operation do.
도 1은 본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치의 구조를 간략히 도시한 도면이다.1 is a view schematically showing the structure of a sealer coating quality inspection apparatus according to an embodiment of the present invention.
도 2는 본 발명의 한 실시예에 따라 제조 공정 상에서 실러 도포에 대한 품질 검사를 수행하는 전체 시스템 구조를 도시한 도면이다.FIG. 2 illustrates an overall system structure for performing a quality check on sealer application on a manufacturing process in accordance with one embodiment of the present invention.
도 3은 본 발명의 한 실시예에 따라 실러 도포 품질 검사 장치가 검사 영역을 세분화하는 예를 도시한 도면이다.3 is a view showing an example in which the sealer coating quality inspection apparatus subdivides the inspection area according to an embodiment of the present invention.
도 4은 본 발명의 한 실시예에 따라 끊김 검사를 수행하는 예를 도시한 도면이다.4 is a diagram illustrating an example of performing a disconnection test according to an exemplary embodiment of the present invention.
도 5는 본 발명의 한 실시예에 따라 실러 도포 품질 검사 장치가 실러 도포의 품질을 검사하는 과정을 간략히 도시한 흐름도이다.FIG. 5 is a flowchart schematically illustrating a process of inspecting a sealer coating quality by a sealer coating quality inspecting apparatus according to an exemplary embodiment of the present invention.
아래에서는 첨부한 도면을 참고로 하여 본 발명의 실시예에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.
명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.
또한, 명세서에 기재된 "…부", "…모듈" 의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다.In addition, the terms "… unit", "... module" described in the specification means a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software.
이제 도 1 내지 도 5를 참고하여 본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치 및 이를 이용한 실러 도포 품질 검사 방법에 대하여 상세하게 설명한다.Now, the sealer coating quality inspection apparatus and the sealer coating quality inspection method using the same will be described in detail with reference to FIGS. 1 to 5.
도 1은 본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치의 구조를 간략히 도시한 도면이다. 이때, 실러 도포 품질 검사 장치는 본 발명의 실시예에 따른 설명을 위해 필요한 개략적인 구성만을 도시할 뿐 이러한 구성에 국한되는 것은 아니다.1 is a view schematically showing the structure of a sealer coating quality inspection apparatus according to an embodiment of the present invention. At this time, the sealer coating quality inspection apparatus only shows a schematic configuration necessary for description according to an embodiment of the present invention, but is not limited to this configuration.
본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치는 열화상 카메라를 이용한 데이터 분석을 통해 실러 도포 제품 전구간의 실러 도포 작업에 대한 품질 검사를 실시하고, 실러 도포 온도를 분석하고 분류하여 품질을 평가한다. 이하에서는 실러 도포 품질 검사 장치가 본 발명의 한 실시예에 따라 자동차 생산 공정에서 썬루프의 실러 도포 공정을 분석하여 품질을 검사하는 공정을 예로 설명한다.Sealer coating quality inspection apparatus according to an embodiment of the present invention performs a quality inspection for the sealer coating operation of the entire sealer coating product through the data analysis using a thermal imaging camera, and evaluates the quality by analyzing and classifying the sealer coating temperature do. Hereinafter, a process in which the sealer coating quality inspection apparatus analyzes the sealer coating process of the sunroof in the automobile production process according to an embodiment of the present invention and checks the quality will be described as an example.
도 1을 참조하면, 본 발명의 실러 도포 품질 검사 장치(100)는 촬영부(110), 수집부(120), 분석부(130) 및 품질 검사부(140)를 포함한다.Referring to FIG. 1, the sealer coating quality inspection apparatus 100 of the present invention includes a photographing unit 110, a collecting unit 120, an analyzing unit 130, and a quality inspecting unit 140.
촬영부(110)는 실러 도포 공정에서 실러 도포 부분을 촬영하여 열화상 이미지를 얻는다.The photographing unit 110 photographs the sealer coating portion in the sealer applying process to obtain a thermal image.
촬영부(110)는 본 발명의 한 실시예에 따라 적어도 하나 이상의 열화상 카메라(112)를 포함한다. 열화상 카메라(112)는 사람의 눈에는 보이지 않지만 적외선을 사용하여, 대상물체에 존재하는 온도의 차이를 조사할 수 있다. The photographing unit 110 includes at least one thermal imaging camera 112 according to an embodiment of the present invention. Although the thermal imaging camera 112 is not visible to the human eye, infrared rays may be used to investigate the difference in temperature existing in the object.
또한, 본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치(100)는 촬영부(110)로 실러가 도포될 부분을 미리 촬영하고, 실러가 도포될 부분의 열화상 이미지를 획득할 수 있다. 그리고, 실러 도포 품질 검사 장치(100)는 실러가 도포되기 전에 촬영한 실러가 도포될 부분의 열화상 이미지로부터 분석한 온도와, 실러가 도포된 후에 촬영한 열화상 이미지로부터 분석한 온도를 비교해서 품질 검사를 실시할 수 있다.In addition, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention may photograph a portion to which the sealer is to be applied to the photographing unit 110 in advance, and obtain a thermal image of the portion to which the sealer is to be applied. The sealer coating quality inspection apparatus 100 compares the temperature analyzed from the thermal image of the portion to which the sealer is photographed before the sealer is applied with the temperature analyzed from the thermal image photographed after the sealer is applied. Quality inspection can be done.
본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 썬루프 실러 도포 공정에서 열화상 카메라를 이용한 제품의 품질을 검사하기 위해 2대 이상의 열화상 카메라가 필요하다. 이는 이미지 왜곡으로 인해 발생할 수 있는 문제를 방지하고, 검사 결과 신뢰성을 높이기 위함이다.Sealer coating quality inspection apparatus 100 according to an embodiment of the present invention requires two or more thermal imaging cameras to inspect the quality of the product using the thermal imaging camera in the sunroof sealer coating process. This is to prevent problems that may occur due to image distortion and to improve reliability of the inspection result.
그리고, 촬영부(100)는 본 발명의 한 실시예에 따라 2대의 열화상 카메라(112)로 실러 도포 부분을 촬영할 수 있다. 여기서, 2대의 열화상 카메라 각각이 촬영하는 실러 도포 부분간의 각도는 소정 각도이상 차이가 날 수 있다. 이는 하나의 열화상 카메라로 촬영하는 부분이 특정 각도 이상일 경우에, 해당 열화상 카메라로 촬영된 열화상 이미지로는 품질 검사 결과를 신뢰하기 어렵기 때문이다. In addition, the photographing unit 100 may photograph the sealer coating portion with the two thermal imaging cameras 112 according to the exemplary embodiment of the present invention. Here, the angle between the sealer coating portions photographed by each of the two thermal imaging cameras may differ by more than a predetermined angle. This is because it is difficult to trust the quality inspection result with the thermal image captured by the thermal camera when the portion photographed by the thermal imaging camera is at a certain angle or more.
따라서, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 해당 조건 각도 내에서도 정확한 열화상 이미지를 획득할 수 있도록, 제품의 앞, 뒤로 카메라를 배치하고, 카메라 설치 대수를 2대 또는 그 이상으로 결정할 수가 있다. Therefore, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention arranges the cameras in front of and behind the product so as to obtain an accurate thermal image even within a corresponding angle of the camera, and sets two or more cameras. You can decide more than that.
그리고, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 상기 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하고, 촬영부(110)가 세분화된 상기 촬영 영역 별로 열화상 이미지를 촬영한다.In addition, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention divides the sealer coating portion into a plurality of parts, sets a photographing area for each part, and the imaging unit 110 divides the thermal image for each photographing area. Shoot the image.
수집부(120)는 촬영부(110)에서 촬영된 실러 도포 부분의 열화상 이미지를 수집한다. 수집부(120)는 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하고, 상기 촬영부가 상기 촬영 영역 별로 열화상 이미지를 촬영하도록 제어할 수 있다.The collecting unit 120 collects a thermal image of the sealer coating portion photographed by the photographing unit 110. The collecting unit 120 may divide the sealer coating portion into a plurality of parts to set a capturing area for each part, and control the capturing unit to capture a thermal image for each capturing area.
이러한 수집부(120)는 본 발명의 한 실시예에 따라 왜곡 보정부(122)를 포함한다.The collection unit 120 includes a distortion correction unit 122 according to an embodiment of the present invention.
왜곡 보정부(122)는 상기 열화상 이미지의 왜곡을 보정하고, 분석 영역의 오차를 수정한다. The distortion corrector 122 corrects the distortion of the thermal image and corrects an error of the analysis region.
분석부(130)는 수집부(120)에서 수집된 열화상 이미지를 분석하고, 분석된 자료를 품질 검사부(140)에 제공한다. The analyzer 130 analyzes the thermal image collected by the collector 120, and provides the analyzed data to the quality inspector 140.
그리고, 분석부(130)는 본 발명의 한 실시예에 따라 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정하는 온도 분석부(132)를 포함한다.In addition, the analysis unit 130 includes a temperature analysis unit 132 for measuring the temperature of the sealer coating portion using the thermal image according to an embodiment of the present invention.
품질 검사부(140)는 열화상 이미지의 분석 결과를 이용해서 실러 도포 작업에 대한 품질 검사를 실시한다. 품질 검사부(140)는 촬영 영역 별로 측정된 실러 도포 부분의 온도를 이용해서 품질 검사를 수행한다.The quality inspecting unit 140 performs quality inspection on the sealer coating operation using the analysis result of the thermal image. The quality inspecting unit 140 performs quality inspection by using the temperature of the sealer coating portion measured for each photographing area.
그리고, 품질 검사부(140)는 본 발명의 한 실시예에 따라 끊김 검사부(142) 및 폭 검사부(144)를 포함한다.In addition, the quality inspecting unit 140 includes a disconnection inspecting unit 142 and a width inspecting unit 144 according to an embodiment of the present invention.
끊김 검사부(142)는 실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 확인하는 실러 도포의 끊김 검사를 실시한다. The disconnection inspection unit 142 performs a disconnection inspection of the sealer application to confirm whether or not there is a broken portion based on the center line in the sealer application advancing direction.
끊김 검사부(142)는 촬영 영역 별로 측정된 온도 정보를 이용해서 실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 검사하여 제품 품질의 합격 또는 불합격 여부를 결정한다.The disconnection inspection unit 142 determines whether the product quality is passed or failed by inspecting whether there is a broken portion based on the center line of the sealer application direction using the temperature information measured for each photographing area.
폭 검사부(144)는 실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하는 폭 검사를 실시한다. 폭 검사부(144)는 실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하며, 실러가 도포된 폭의 길이를 검사한다.The width inspection part 144 performs the width | variety test which a sealer measures the width | variety of application | coating in the direction perpendicular | vertical to a sealer application | coating advancing direction. The width inspection unit 144 measures the width of the sealer coating in a direction perpendicular to the direction of the sealer application, and inspects the length of the width on which the sealer is applied.
여기서, 폭 검사부(144)는 실러 도포 진행 방향을 따라 중심선을 설정하고, 중심선에서 좌우 방향의 온도 데이터의 기울기를 계산한다. 그리고, 폭 검사부(144)는 좌우 방향에서 상기 온도 데이터의 기울기 변화 값이 최대값인 좌우 위치들을 찾고, 상기 최대값인 상기 좌우 위치에서 길이를 계산하여 실러가 도포된 폭을 계산할 수 있다.Here, the width | variety test part 144 sets a center line along a sealer application | coating progress direction, and calculates the inclination of the temperature data of a left-right direction from a center line. In addition, the width inspecting unit 144 may find left and right positions where the gradient change value of the temperature data is a maximum value in the left and right directions, and calculate a width at which the sealer is applied by calculating a length at the maximum left and right positions.
또한, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 PLC, Network, 키오스크 PC 등의 장치를 이용하여 열화상 카메라로부터 수집한 데이터를 서버까지 전송할 수 있다.In addition, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention may transmit data collected from the thermal imaging camera to a server using a device such as a PLC, a network, a kiosk PC, or the like.
그리고, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 제품의 품질 검사 결과가 합격이면, 현장 키오스크 PC 모니터에 합격 결과를 표현하여, 작업자가 제품의 품질 검사 결과를 인지할 수 있도록 한다. 그리고, 만약 품질 검사 결과가 불합격이면, 키오스크 PC 모니터에 불합격 결과를 표현할 뿐 아니라, 경광등을 울림으로써, 작업자가 품질 검사 결과를 빠른 시간 내에 인지하고 반응 할 수 있다.And, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention, if the quality test result of the product is passed, express the pass result on the field kiosk PC monitor, the operator can recognize the quality test result of the product. Make sure And, if the quality inspection result is not satisfied, not only express the failure result on the kiosk PC monitor, but also by beeping, the operator can recognize the quality inspection result and react quickly.
도 2는 본 발명의 한 실시예에 따라 제조 공정 상에서 실러 도포에 대한 품질 검사를 수행하는 전체 시스템 구조를 도시한 도면이다.FIG. 2 illustrates an overall system structure for performing a quality check on sealer application on a manufacturing process in accordance with one embodiment of the present invention.
도 2를 참조하면, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 열화상 카메라 2대를 사용하여, 제품의 앞, 뒷 부분의 실러 도포 결과를 촬영한다. 여기서, 제품을 나누어서 촬영한 이유는 카메라와 제품의 촬영 각도에 따른 왜곡이 발생함으로 인해 품질 결과 신뢰도가 떨어지는 것을 방지하기 위함이다.Referring to FIG. 2, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention photographs the sealer coating results of the front and rear portions of the product using two thermal imaging cameras. In this case, the reason why the product is divided into pieces is to prevent the reliability of the quality result from being lowered due to distortion caused by the photographing angle of the camera and the product.
그리고, 제품 품질 분석은 팔레트(Pallet)위에 고정된 제품의 촬영된 이미지를 사용한다. 이는 4D data 기반의 기 설정된 분석 영역과 촬영한 제품의 이미지간의 위치 오차가 발생 할 수 있기 때문이다. 그리고, 이러한 오차는 품질분석 결과 신뢰도 하락에 큰 영향을 줄 수 있다. 이에 따라, 3D 캐드 정보와 열화상 카메라로 촬영된 이미지에서, 설정된 분석 영역과 촬영된 제품의 분석 영역 설정 오차를 찾고 수정한다.And, product quality analysis uses the captured image of the product fixed on the pallet. This is because a position error between a preset analysis region based on 4D data and an image of a photographed product may occur. In addition, such an error may significantly affect the reliability of the result of the quality analysis. Accordingly, in the image captured by the 3D CAD information and the thermal imaging camera, the set analysis area and the analysis area setting error of the photographed product are found and corrected.
도 3은 본 발명의 한 실시예에 따라 실러 도포 품질 검사 장치가 검사 영역을 세분화하는 예를 도시한 도면이다.3 is a view showing an example in which the sealer coating quality inspection apparatus subdivides the inspection area according to an embodiment of the present invention.
본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 제품 품질 검사를 효율적으로 표현하기 위해 검사 영역을 세분화한다. 이는 작업자 또는 검사자가 제품 불량 발생시, 제품의 불량 위치를 파악하고, 현장에서 바로 수정 및 보완이 가능한 불량인지, 현장에서 대응 할 수 없는 불량인지 확인 할 수 있도록 하기 위함이다. 또한, 연속적 불량 판정 시, 보다 정확한 불량 위치를 확인하여 기계의 문제로 인한 불량제품 인지 확인을 돕기 위함이다.The sealer coating quality inspection apparatus 100 according to an embodiment of the present invention subdivides the inspection area in order to efficiently express the product quality inspection. This is to allow the operator or inspector to identify the location of the product when the product is defective, and to check whether the product can be corrected and supplemented immediately at the site, or whether the product cannot be responded at the site. In addition, it is to help confirm whether the defective product due to the problem of the machine by checking the more accurate failure position when the continuous failure determination.
도 4은 본 발명의 한 실시예에 따라 끊김 검사를 수행하는 예를 도시한 도면이다.4 is a diagram illustrating an example of performing a disconnection test according to an exemplary embodiment of the present invention.
우선, 끊김 검사는 제품의 실러가 도포되다가 끊어진 부분이 있는지 확인 하기 위함이다. 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 도 4에서와 같이, 중심선을 기준으로, 끊어진 부분이 있는지 검사하여, 끊김 검사의 합격/불합격 여부를 판다.First of all, the disconnection inspection is to check whether there is any part of the product which is broken while the sealer is applied. Sealer coating quality inspection apparatus 100 according to an embodiment of the present invention, as shown in Figure 4, by inspecting the presence of the broken portion, based on the center line, to determine whether or not the pass inspection.
그리고, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 폭 검사를 수행할 수 있다. 여기서, 폭 검사는 도포된 실러의 중앙에서 수직하게 도포된 폭의 길이를 검사하는 것이다. 폭 검사는 끊김 검사 예시 그림에서와 같이 중심선의 수직 방향으로 실러 도포된 부분의 길이를 계산하여 폭 검사의 합격 또는 불합격 여부를 판단한다.And, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention may perform a width inspection. Here, the width inspection is to inspect the length of the applied width vertically in the center of the applied sealer. The width test calculates the length of the part applied by sealing in the vertical direction of the center line as shown in the example of the break test to determine whether the width test is passed or failed.
폭 검사는 중심선에서 좌, 우 온도 데이터의 기울기를 계산하고, 좌우 각각의 기울기 변화 값이, 최대값에서 줄어드는 위치를 찾아 좌우 길이를 계산한다. 이 때의 길이가 해당 위치의 폭 길이가 된다.The width test calculates the slope of the left and right temperature data at the center line, and calculates the left and right lengths by finding a position where the change in the left and right slopes decreases from the maximum value. The length at this time becomes the width length of the position.
또한, 본 발명의 한실시예에 따른 실러 도포 품질 검사 장치(100)는 미세 끊김 검사를 수행한다.In addition, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention performs a fine break inspection.
미세 끊김 검사는 전후 상대 최대 온도 그래프 중 21개 픽셀을 비교하여, 특정 패턴을 검사한다. 예를 들어, 각 온도 포인트를 T(1)…T(i)라고 할 때(여기서, i는 end point 번호), 미세 끊김 검사 온도 위치가 n인 경우, 20개 데이터 중 [T'(n)~T'(n+20)] 최대 온도 값 및 최소 온도 값을 계산한다.The fine break test compares 21 pixels of the before and after relative maximum temperature graphs to examine a specific pattern. For example, each temperature point is represented by T (1)... When T (i) (where i is the end point number), when the fine disconnection test temperature position is n, the maximum temperature value of [T '(n) to T' (n + 20)] of 20 data and Calculate the minimum temperature value.
그리고, 만약, 최소값 인덱스가 10 [T'(10)] 이면, 각 인덱스 간의 기울기를 계산한다(T''(m) = T'(n+1)-T'(n)). T(10)을 기준으로 좌, 우 기울기를 이용하여 미세 끊김을 계산하고, 미세 끊김으로 판단 시, 사용자에게 불량 가능성이 있음을 알린다.And, if the minimum value index is 10 [T '(10)], the slope between each index is calculated (T' '(m) = T' (n + 1) -T '(n)). Based on the T (10) based on the left and right slopes to calculate the fine break, when judging as a fine break, the user is informed that there is a possibility of failure.
도 5는 본 발명의 한 실시예에 따라 실러 도포 품질 검사 장치가 실러 도포의 품질을 검사하는 과정을 간략히 도시한 흐름도이다. 이하의 흐름도는 도 1 내지 도 4의 구성과 연계하여 동일한 도면부호를 사용하여 설명한다.FIG. 5 is a flowchart schematically illustrating a process of inspecting a sealer coating quality by a sealer coating quality inspecting apparatus according to an exemplary embodiment of the present invention. The following flowchart is described using the same reference numerals in connection with the configuration of FIGS. 1 to 4.
도 5를 참조하면, 본 발명의 한 실시예에 따라 실러 도포 품질 검사 장치(100)는 열화상 카메라로 실로 도포 부분의 열화상 이미지를 촬영한다(S102). 실러 도포 품질 검사 장치(100)는 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하고, 세분화된 촬영 영역 별로 열화상 이미지를 촬영한다.Referring to FIG. 5, the sealer coating quality inspection apparatus 100 according to an embodiment of the present invention photographs a thermal image of a coating portion with a thermal image camera in real (S102). The sealer coating quality inspection apparatus 100 divides the sealer coating portion into a plurality of pieces, sets a photographing area for each part, and photographs a thermal image for each subdivided photographing area.
그리고, 실러 도포 품질 검사 장치(100)는 열화상 이미지를 수집하고, 열화상 이미지 왜곡을 보정하여 분석 영역을 로딩한다(S104, S106).Then, the sealer coating quality inspection apparatus 100 collects the thermal image, corrects the thermal image distortion, and loads the analysis region (S104 and S106).
실러 도포 품질 검사 장치(100)는 분석 영역에 오차가 있는지 여부를 판단하고, 오차가 없는 경우, 불량 패턴을 검사한다(S108, S110). 실러 도포 품질 검사 장치(100)는 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정하고, 온도 측정 결과를 이용해 품질을 검사한다. 실러 도포 품질 검사 장치(100)는 실러 도포의 끊김 검사, 실러가 도포된 폭의 길이 검사 및 미세 끊김 검사 등을 수행한다.The sealer coating quality inspection apparatus 100 determines whether there is an error in the analysis area, and when there is no error, inspects the defective pattern (S108, S110). The sealer coating quality inspection apparatus 100 measures the temperature of the sealer coating portion using the thermal image, and inspects the quality using the temperature measurement result. The sealer coating quality inspection apparatus 100 performs a cut inspection of the sealer coating, a length inspection of the width to which the sealer is applied, and a fine cut inspection.
실러 도포 품질 검사 장치(100)는 검사 결과에 따라 합격 및 불합격 여부를 판정하고, 이를 사용자에게 제공한다(S112).The sealer coating quality inspection apparatus 100 determines whether the pass or fail is based on the inspection result, and provides it to the user (S112).
따라서, 본 발명의 한 실시예에 따른 실러 도포 품질 검사 장치는 열화상 카메라로 촬영한 열화상 이미지를 이용한 데이터 분석을 통해, 제품 전구간의 실러 도포 작업에 대한 품질 검사를 실시함으로써, 실러 도포 작업에 대한 품질 검사를 실시할 수 있는 환경을 제공한다.Therefore, the sealer coating quality inspection apparatus according to an embodiment of the present invention performs a quality inspection on the sealer coating operation between all the products of the product through data analysis using the thermal image taken by the thermal imaging camera. Provide an environment where quality inspections can be conducted.
이상에서 설명한 본 발명의 실시예는 장치 및 방법을 통해서만 구현이 되는 것은 아니며, 본 발명의 실시예의 구성에 대응하는 기능을 실현하는 프로그램 또는 그 프로그램이 기록된 기록 매체를 통해 구현될 수도 있다. 이러한 기록 매체는 서버뿐만 아니라 사용자 단말에서도 실행될 수 있다.The embodiments of the present invention described above are not only implemented through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiments of the present invention or a recording medium on which the program is recorded. Such a recording medium can be executed not only in the server but also in the user terminal.
이상에서 본 발명의 실시예에 대하여 상세하게 설명하였지만 본 발명의 권리범위는 이에 한정되는 것은 아니고 다음의 청구범위에서 정의하고 있는 본 발명의 기본 개념을 이용한 당업자의 여러 변형 및 개량 형태 또한 본 발명의 권리범위에 속하는 것이다.Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

Claims (15)

  1. 실러 도포 품질 검사 장치가 제조 공정상에서 실러 도포 부분의 품질을 검사하는 방법에서,In the method in which the sealer coating quality inspection apparatus checks the quality of the sealer coating portion on the manufacturing process,
    적어도 하나 이상의 열화상 카메라로 실러 도포 부분을 촬영하는 단계,Photographing the sealer coating portion with at least one thermal imaging camera,
    상기 적어도 하나 이상의 열화상 카메라로 촬영된 열화상 이미지를 분석하는 단계, 그리고Analyzing a thermal image taken by the at least one thermal camera, and
    상기 열화상 이미지의 분석 결과를 이용해서 실러 도포 작업에 대한 품질 검사를 실시하는 단계Performing a quality inspection on the sealer coating operation using the analysis result of the thermal image
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  2. 제1항에서,In claim 1,
    상기 촬영하는 단계는,The photographing step,
    상기 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하는 단계, 그리고Dividing the sealer coating portion into a plurality and setting a photographing area for each portion; and
    세분화된 상기 촬영 영역 별로 열화상 이미지를 촬영하는 단계Photographing a thermal image for each of the subdivided photographing regions
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  3. 제2항에서,In claim 2,
    상기 열화상 이미지를 분석하는 단계는,Analyzing the thermal image,
    상기 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정하는 단계Measuring the temperature of the sealer coating portion using the thermal image
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  4. 제3항에서,In claim 3,
    상기 열화상 이미지를 분석하는 단계는,Analyzing the thermal image,
    상기 열화상 이미지의 왜곡을 보정하는 단계, 그리고Correcting distortion of the thermal image, and
    분석 영역의 오차를 수정하는 단계Correcting errors in the analysis area
    를 더 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method further comprising.
  5. 제3항에서,In claim 3,
    상기 품질 검사를 실시하는 단계는,The step of performing the quality check,
    촬영 영역 별로 측정된 실러 도포 부분의 온도를 이용해서 품질을 검사하는 단계Step of checking the quality by using the temperature of the sealer coating portion measured for each shooting area
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  6. 제5항에서,In claim 5,
    상기 품질을 검사하는 단계는,The step of checking the quality,
    실러 도포의 끊김 검사를 실시하며, 촬영 영역 별로 측정된 온도 정보를 이용해서 실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 검사하여 제품 품질의 합격 또는 불합격 여부를 결정하는 단계Performing a seal inspection of the sealer coating, and determining whether the product quality is passed or failed by checking whether there is a broken portion based on the center line in the direction of the sealer coating using the temperature information measured for each shooting area.
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  7. 제5항에서,In claim 5,
    상기 품질을 검사하는 단계는,The step of checking the quality,
    실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하며, 실러가 도포된 폭의 길이를 검사하는 단계A step of measuring the width of the application of the sealer in a direction perpendicular to the direction of the application of the sealer, and checking the length of the width of the application of the sealer
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  8. 제7항에서,In claim 7,
    상기 실러가 도포된 폭의 길이를 검사하는 단계는,Examining the length of the width to which the sealer is applied,
    실러 도포 진행 방향을 따라 중심선을 설정하는 단계,Setting a centerline along the sealer application direction;
    상기 중심선에서 좌우 방향의 온도 데이터의 기울기를 계산하는 단계, 그리고Calculating a slope of temperature data in left and right directions at the center line, and
    상기 좌우 방향에서 상기 온도 데이터의 기울기 변화 값이 최대값인 좌우 위치들을 찾고, 상기 최대값인 상기 좌우 위치에서 길이를 계산하여 실러가 도포된 폭을 계산하는 단계Finding the left and right positions where the gradient change value of the temperature data is the maximum value in the left and right directions, and calculating a width at which the sealer is applied by calculating a length at the maximum left and right positions;
    를 포함하는 실러 도포 품질 검사 방법. Sealer coating quality inspection method comprising a.
  9. 제1항에서,In claim 1,
    상기 실러 도포 부분을 촬영하는 단계 이전에는,Before the step of photographing the sealer coating portion,
    실러 도포가 되기 전에 실러가 도포될 부분을 촬영하고, 실러가 도포될 부분의 열화상 이미지를 획득하는 단계를 더 포함하며,Photographing the portion to which the sealer is to be applied before the sealer is applied, and obtaining a thermal image of the portion to which the sealer is to be applied,
    상기 품질 검사를 실시하는 단계는,The step of performing the quality check,
    실러가 도포되기 전에 촬영한 상기 실러가 도포될 부분의 열화상 이미지로부터 분석한 온도와, 실러가 도포된 후에 촬영한 열화상 이미지로부터 분석한 온도를 비교해서 검사를 실시하는 단계Performing inspection by comparing the temperature analyzed from the thermal image of the portion to which the sealer is to be applied before the sealer is applied and the temperature analyzed from the thermal image taken after the sealer is applied.
    를 포함하는 실러 도포 품질 검사 방법.Sealer coating quality inspection method comprising a.
  10. 촬영부에서 촬영된 실러 도포 부분의 열화상 이미지를 수집하는 수집부,Collecting unit for collecting the thermal image of the sealer coating portion taken by the photographing unit,
    상기 수집된 열화상 이미지를 분석하는 분석부, 그리고An analysis unit for analyzing the collected thermal images, and
    상기 열화상 이미지의 분석 결과를 이용해서 실러 도포 작업에 대한 품질 검사를 실시하는 품질 검사부Quality inspection unit for performing a quality inspection on the sealer coating operation using the analysis results of the thermal image
    를 포함하는 실러 도포 품질 검사 장치.Sealer coating quality inspection apparatus comprising a.
  11. 제10항에서,In claim 10,
    상기 촬영부는, The photographing unit,
    적어도 하나 이상의 열화상 카메라를 포함하며, 2대의 열화상 카메라로 실러 도포 부분을 촬영하며, 각각의 열화상 카메라가 촬영하는 실러 도포 부분간의 각도가 소정 각도이상 차이나는 실러 도포 품질 검사 장치.A sealer coating quality inspection apparatus comprising at least one thermal imaging camera, photographing the sealer coating portions with two thermal imaging cameras, and the angles between the sealer coating portions photographed by the respective thermal imaging cameras differ by more than a predetermined angle.
  12. 제11항에서,In claim 11,
    상기 수집부는,The collection unit,
    상기 실러 도포 부분을 복수 개로 나누어 각 부분 별로 촬영 영역을 설정하고, 상기 촬영부가 상기 촬영 영역 별로 열화상 이미지를 촬영하도록 제어하는 실러 도포 품질 검사 장치.A sealer coating quality inspection apparatus for dividing the sealer coating portion into a plurality of parts, setting a photographing area for each part, and controlling the photographing unit to photograph a thermal image for each photographing area.
  13. 제12항에서,In claim 12,
    상기 분석부는, The analysis unit,
    상기 열화상 이미지를 이용하여 실러 도포 부분의 온도를 측정하는 실러 도포 품질 검사 장치.A sealer coating quality inspection device for measuring the temperature of the sealer coating portion using the thermal image.
  14. 제13항에서,In claim 13,
    상기 품질 검사부는, The quality inspection unit,
    실러 도포 진행 방향의 중심선을 기준으로 끊어진 부분이 있는지 여부를 확인하는 실러 도포의 끊김 검사를 실시하는 실러 도포 품질 검사 장치.Sealer coating quality inspection apparatus which performs the cut-off inspection of sealer coating which checks whether there is a broken part with respect to the center line of a sealer application | coating progress direction.
  15. 제13항에서,In claim 13,
    상기 품질 검사부는, The quality inspection unit,
    실러 도포 진행 방향과 수직한 방향으로 실러가 도포의 폭을 측정하는 폭 검사를 실시하는 실러 도포 품질 검사 장치.A sealer coating quality inspection apparatus in which a sealer performs a width inspection in which the sealer measures the width of the coating in a direction perpendicular to the sealer coating advancing direction.
PCT/KR2015/013009 2014-12-03 2015-12-01 Device for inspecting quality of thermal imaging and method for inspecting quality of thermal imaging using same WO2016089091A1 (en)

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KR1020140172367A KR20160067303A (en) 2014-12-03 2014-12-03 Device for inspecting quality of sealer coating and method for for inspecting quality of sealer coating using the same

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