• 제목/요약/키워드: Visual inspection system

검색결과 341건 처리시간 0.026초

자동차 배선용 커넥터 부품의 품질 검사 시스템 개발에 관한 연구 (A Study on the Development of Quality Inspection System for Connector Components Used in Automotive Wiring)

  • 류정탁;김필석;이형주
    • 한국산업정보학회논문지
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    • 제26권6호
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    • pp.11-16
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    • 2021
  • 본 논문에서는 자동차 배선에 사용되는 커넥터의 조립 불량 상태를 식별하는 품질 검사 시스템을 개발하였다. 방수용 커넥터는 방수를 위하여 내부 Seal을 필수적으로 삽입하여야 하는데 생산 과정에서 누락되거나 이중 삽입되는 경우가 있다. 이를 구분하기 위하여 포토센서와 터치스위치를 사용하여 자동화 검사 지그를 설계하였다. 기존 육안검사의 경우 5인이 하루 8시간 검사하였을 때 6,400개의 커넥터를 검사하였으나 개발된 검사 지그를 사용할 때는 20,000개를 검사하므로 기존의 육안 검사와 비교하여 생산성이 크게 향상되었다.

비전 시스템을 이용한 실시간 섬유결점 검사기 개발 (Development of Real-Time Vision-Based Fabric Inspection System)

  • 조지승;정병묵;박무진
    • 한국정밀공학회지
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    • 제20권9호
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    • pp.92-99
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    • 2003
  • Quality inspection of textile products is an important problem for fabric manufacturers. This paper presents an automatic vision-based system for quality control of web textile fabrics. Typical web material is 1-3m wide and is driven with speeds ranging from 20m/min to 200m/min. At the present, the quality assessment procedures are performed manually by expert. But worker can not detect more than 60% of the present defect and inspect the fabric if moving faster than 30m/min. To increase the overall quality and homogeneity of textile, an automated visual inspection system is needed fur the productivity. However, the existing inspection system are too expensive to purchase for small companies. In this paper, the proposed PC based real-time inspection algorithm gives low cost textile inspection system, high detection rate with good accuracy and low rate of false alarms. The method shows good results in the detection of several types of fabric defects.

시설물 안전점검을 위한 E-PAD 기반 상태평가 시스템 개발 (Development of E-PAD based condition evaluation system for facility safety inspection)

  • 정해용;이흥수;이종화;김영석;박철
    • 한국구조물진단유지관리공학회 논문집
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    • 제23권4호
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    • pp.1-7
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    • 2019
  • 국가 주요 시설물의 안전점검 업무가 일원화됨에 따라 업무 효율성과 전문성 강화 등의 효과가 기대되고 있다. 세계적으로 시설물의 물리적 기능적 결함을 초기에 발견하는 외관조사의 중요성이 강조되고 있다. 이에 본 연구에서는 기존 외관조사 방법의 문제와 한계를 극복하기 위해 시설물 안전점검을 위한 E-PAD기반 상태평가 시스템을 개발하였다. 본 시스템은 시설개요, 작업목록, 외관조사, 결함표로 구성되어 있으며, 현장에서 외관조사망도를 다운받아 조사된 손상 및 정보를 입력하고, 평가 등급을 확인할 수 있다. 본 시스템의 검증을 위해 교량 10개소에 대한 외관조사 데이터를 입력하여 기존 안전등급을 비교하였다. 그 결과 시스템에서 산출된 안전등급과 기존 안전등급이 동일한 것으로 확인되었다. 또한 AHP기법을 통해 타당성 분석 결과 기존 방법 대비 기능 10%증가, 비용 36%감소, 가치 30%증가한 것으로 분석되었다. 따라서, 시설물 관리 수준 향상을 위해 체계적인 데이터 구축 및 정보 분석을 위한 시스템으로 기여할 것으로 기대된다.

라인스캔 카메라를 이용한 Floating Seal 시각 검사 시스템의 개발 (Development of Floationg Seal Inspection System Using Line Scan Camera)

  • 박창목;왕지남
    • 한국정밀공학회지
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    • 제16권12호
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    • pp.60-70
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    • 1999
  • An efficient automatic inspection system for Floating Seal is developed, The proposed system consists of a high resolution line scan camera, microcomputer, and PLC (Programmable Logic Controller). In order to perform rapid inspection, The ROI (Region of Interest) is extracted from the original image. There are types of defects; shape defects and surface defects. Each features of defects are captured by edge detect, segmentation, morphological operation, and threshold analysis. PLC controller is used to synchronize the whole system and store the inspection results temporarily to reduce the overhead of microcomputer. As a result, the system is being utilized successfully in a teal inspection line.

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형상 매칭법을 이용한 비이클 실링 검사 시스템 개발 (Development of Vehicle Sealing Inspection System Using Geometry Matching Method)

  • 이정호;박찬희;서영수;이형수;김한주
    • 한국생산제조학회지
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    • 제22권1호
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    • pp.150-155
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    • 2013
  • This work present a new method of sealing inspection system for vehicle in which foam rubber materials are used for sealing the vehicle parts. This system is composed from a devices comprising non-contact and real-time scanning on visual inspection in machine parts. We have been investigated qualitative factors that influenced on sealing system of vehicle structure which flexibly attenuated vibration and plenty of foam rubber materials having elastic property. However, there are different factors which still depended on outdated technique (personnel subjective judgment) in the performance inspection of rubber parts, specially for cross section inspection. Through a newly developed inspection system which recently applied for the production line, we successfully achieved more effective results of matching rate by about 80 % in the sealing performance inspection with 0.7% to 1.4% in the repeated errors. These are resulted from non-contacted response by CCD camera and vision program using geometry matching method. We expect that this system may be widely applied in the strict inspection parts of more diverse cross-section in future.

Development of Inspect Algorithm for Pallets Using Vision System

  • Lee, Man-Hyung;Hong, Suh-Il
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2001년도 ICCAS
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    • pp.101.6-101
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    • 2001
  • This paper deals with inspect algorithm using visual system. One of the major problems that arise during polymer production is the estimation of the noise of the product(bad pallets). An erroneous output can cause a lot of losses (production and financial losses). Therefore new methods for real-time inspection of the noise are demanded. For this reason, we have presented a development of vision system algorithm for the defect inspection of PE pallets. First of all, in order to detect the edge of object, the differential filter is used. And we apply to the labeling algorithm for feature extraction. This algorithm is designed for the defect inspection of pallets ...

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Bi-directional fault analysis of evaporator inspection system

  • Kang, Dae-Ki;Kang, Jeong-Jin
    • International journal of advanced smart convergence
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    • 제1권1호
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    • pp.57-60
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    • 2012
  • In this paper, we have performed a safety analysis on an automotive evaporator inspection system. We performed the bi-directional analysis on the manufacturing line. Software Fault Tree Analysis (SFTA) as backward analysis and Software Failure Modes, Effects, & Criticality Analysis (SFMECA) as forward analysis are performed alternately to detect potential cause-to-effect relations. The analysis results indicate the possibility of searching and summarizing fault patterns for future reusability.

MMTF와 인간지각 특성을 이용한 결함성분 추출기법 (Defect Detection Method using Human Visual System and MMTF)

  • 허경무;주영복
    • 제어로봇시스템학회논문지
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    • 제19권12호
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    • pp.1094-1098
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    • 2013
  • AVI (Automatic Vision Inspection) systems automatically detect defect features and measure their sizes via camera vision. Defect detection is not an easy process because of noises from various sources and optical distortion. In this paper the acquired images from a TFT panel are enhanced with the adoption of an HVS (Human Visual System). A human visual system is more sensitive on the defect area than the illumination components because it has greater sensitivity to variations of intensity. In this paper we modified an MTF (Modulation Transfer Function) in the Wavelet domain and utilized the characteristics of an HVS. The proposed algorithm flattens the inner illumination components while preserving the defect information intact.

더블기어 자동 시각 검사 시스템 실계 및 구현 (Automated Visual Inspection System of Double Gear using Inspection System)

  • 이영교;김영포
    • 디지털산업정보학회논문지
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    • 제7권4호
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    • pp.81-88
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    • 2011
  • Mini Double Gears Frame is critical part of PDP and also produces couple hundred thousand every month. In the process of mass production, product inspection is very important process. Double Gear, one of the part of machine, was inspected by human eyes which caused mistakes and slow progress. To achieve the speed and accuracy the system was compensated by vision system which is inspecting automatically. The focus value is measured based on the fact that high contrast images have much high frequency edge information. High frequency term of the image is extracted using the high-pass filter and the sum of the high frequency term is used as the focus value. We used a Gaussian smoothing filter to reduce the noise and then measures the focus value using the modified Laplacian filter called a Sum modified Laplacian Focus values for the various lens positions are calculated and the position with the maximum focus value is decided as the focused position. The focus values calculated in various lens position showed the Gaussian distribution. We proposed a method to estimate the best focus position using the Gaussian curve fitting. Focus values of the uniform interval lens positions are calculated and the values are used to estimate the Gaussian distribution parameters to find the best focus position.

소형.대용량 Metalized Film Capacitor의 용접 오차 검출 개발 (A Welding Inspection of Small-sized Metalized Film Capacitor with Large Capacity)

  • 정원영;오춘석;유영기;임종설;이서영
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 학술대회 논문집 정보 및 제어부문
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    • pp.135-137
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    • 2004
  • In this study we'll deal with the small-sized metalized film capacitors with large capacity which head have $5mm{\times}5mm{\times}2.5mm$ dimension. The lead wire is used to weld at both sides of capacitors. At that time the position gap between the welding machine and lead wire supplier would cause the welding error. Also, during the tapping processing of metalized film capacitors, the interval error among the capacitors, the length error of lead frame attached at the capacitors, and the straightness distortion of the lead frame could happen. As mentioned, four kinds of error parameters will be measured and analyzed by using the automatic visual inspection system that is implemented with CCD camera, optical parts, background lighting, and image processing algorithms. Finally we are able to achieve success rate above 99% to detect the welding faults of capacitors in the field test.

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