자동차 글라스 조립 자동화설비를 위한 FPGA기반 실러 도포검사 비전시스템 개발
Development of an FPGA-based Sealer Coating Inspection Vision System for Automotive Glass Assembly Automation Equipment
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초록
In this study, an FPGA-based sealer inspection system was developed to inspect the sealer applied to install vehicle glass on a carbody. The sealer is a liquid or paste-like material that promotes adhesion such as sealing and waterproofing for mounting and assemblingvehicle parts to a car body. The system installed in the existing vehicle design parts line does not detect the sealer in the glass rotationsection and takes a long time to process. This study developed a line laser camera sensor and an FPGA vision signal processing moduleto solve this problem. The line laser camera sensor was developed such that the resolution and speed of the camera for data acquisitioncould be modified according to the irradiation angle of the laser. Furthermore, it was developed considering the mountability of the entiresystem to prevent interference with the sealer ejection machine. In addition, a vision signal processing module was developed using theZynq-7020 FPGA chip to improve the processing speed of the algorithm that converted the profile to the sealer shape image acquiredfrom a 2D camera and calculated the width and height of the sealer using the converted profile. The performance of the developed sealerapplication inspection system was verified by establishing an experimental environment identical to that of an actual automobile productionline. The experimental results confirmed the performance of the sealer application inspection at a level that satisfied the requirementsof automotive field standards.
Abstract
In this study, an FPGA-based sealer inspection system was developed to inspect the sealer applied to install vehicle glass on a carbody. The sealer is a liquid or paste-like material that promotes adhesion such as sealing and waterproofing for mounting and assemblingvehicle parts to a car body. The system installed in the existing vehicle design parts line does not detect the sealer in the glass rotationsection and takes a long time to process. This study developed a line laser camera sensor and an FPGA vision signal processing moduleto solve this problem. The line laser camera sensor was developed such that the resolution and speed of the camera for data acquisitioncould be modified according to the irradiation angle of the laser. Furthermore, it was developed considering the mountability of the entiresystem to prevent interference with the sealer ejection machine. In addition, a vision signal processing module was developed using theZynq-7020 FPGA chip to improve the processing speed of the algorithm that converted the profile to the sealer shape image acquiredfrom a 2D camera and calculated the width and height of the sealer using the converted profile. The performance of the developed sealerapplication inspection system was verified by establishing an experimental environment identical to that of an actual automobile productionline. The experimental results confirmed the performance of the sealer application inspection at a level that satisfied the requirementsof automotive field standards.
참고문헌 (7)
- 김주영, "자동차 글라스 조립 자동화설비를 위한 프라이머 도포검사 비전시스템 개발", 센서학회지, 32(2), pp.124~130 (2023), 한국센서학회
- H. Gwak, "Device and method for inspecting sealer application condition using vision system", Korea Patent 10-1188352, ~ (2012)
- H. Gwak, "System and method for inspecting sealer application condition", Korea Patent 10-1640425, ~ (2016)
- 엄강익, "영상처리를 이용한 자동차유리에 도포된 실러(sealer)의 균일도 검사에 대한 연구", 석사, 전기전자정보시스템공학전공, pp.2013
- 김호연, "ICT 기술을 융합한 자동차 실러도포 공정 모니터링 시스템", 한국IT서비스학회지, 17(3), pp.53~61 (2018), 한국IT서비스학회[DOI]
- Y. Yin, "High dynamic range 3D laser scanning with the single-shot raw image of a color camera", Opt. Express, 29(26), pp.43626~43641 (2021)