• Journal of Biosystems Engineering
• /
• 제23권4호
• /
• pp.373-380
• /
• 1998

The contribution of this paper is to provide the methods for the production automation of potato microtuber using the vision process in growth monitoring. The first method deals with computation for the growth density in the primary growth process. The second method addresses cognition process to identify the number and the volume of potato microtuber in secondary growth process. The third is to decide whether potato microtubers are infected by a virus or bacteria in growth process. The computation for the growth density in the primary growth process uses the method of Labeling. The second and third methods use template matching based on color patterns. With the developed method using vision process, this experiment is capable of discriminating weekly growth-rate in primary growth process, 85% cognition rate in secondary process and identifying whether there are infections. Therefore, we conclude that our experimental results are capable of growth monitoring for mass production of potato microtubers.

• Transactions on Control, Automation and Systems Engineering
• /
• 제2권3호
• /
• pp.182-188
• /
• 2000

High-frequency electric resistance welding (HERW) technique is one of the most productive manufacturing method currently available for pipe and tube production because of its high welding speed. In this process, a heat input is controlled by skilled operators observing color and shape of bead but such a manual control can not provide reliability and stability required for manufacturing pipes of high grade quality because of a variety of bead shapes and noisy environment. In this paper, in an effort to provide reliable quality inspection, we propose a neural network-based method for classification of bead shape. The proposed method utilizes the structure of Kohonen network and is designed to learn the skill of the expert operators and to provide a good solution to classify bead shapes according to their welding conditions. This proposed method is implemented on the real pipe manufacturing process, and a series of experiments are performed to show its effectiveness.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2005년도 ICCAS
• /
• pp.2414-2417
• /
• 2005

Compact Camera Module(CCM) is widely used in PDA, Celluar phone and PC web camera. With the greatly increasing use for mobile applications, there has been a considerable demands for high speed production of CCM. The major burden of production of CCM is assembly of lens module onto CCD or CMOS packaged circuit board. After module is assembled, the CCM is inspected. In this paper, we developed the image capture board for CCM and the imaging processing algorithm to inspect the defects in captured image of assembled CCMs. The performances of the developed inspection system and its algorithm are tested on samples of 10000 CCMs. Experimental results reveal that the proposed system can focus the lens of CCM within 5s and we can recognize various types of defect of CCM modules with good accuracy and high speed.

• 한국산업융합학회 논문집
• /
• 제4권3호
• /
• pp.339-347
• /
• 2001

Automatic automobile has been studied as the alternative energy system and the production flow automation device recently. But this is dependent on the import production, and its position cannot be controlled free from the fixed path. It is difficult to control the automobile position because of the eccentricity of inertia monent, slip and roughness between wheel and road surface. This problems is solved for the controller to be feedbacked the data of the multi-sensor system consisting of the rotary encoder and electronic compass. The proportional Integrated controller in the modified Ziegler-Nichols method is made up with Hitachi 7034 microprocessor. To the real time control the mechanical, electrical and electronic hardware and software device is produced by myself. The RF data of automobile speed and position is supplied to the remote PC to be displayed the automobile condition. By the experinent of the forward, spin, point path planning, it is known for autombile.

• 제어로봇시스템학회논문지
• /
• 제17권5호
• /
• pp.479-483
• /
• 2011

The automation of production process is actively expanding for the purpose of the cost reduction and quality assurance. Among these, automatic tracking of the product along the whole process of the production is also important topic. Typically this is done by adopting OCR technology. Conventional OCR technology operates well on the rather good quality of the image like as printed characters on the paper. In industrial application, IDs are marked on the metal surface, and this cause the height difference between background material and character. Illumination systems that guarantee an image with good quality may be a solution, but it is rather difficult to design such an illumination system. This paper proposes an algorithm for the recognition of vehicle's ID characters using edge projection and PCA (Principal Component Analysis). Proposed algorithm robustly operates under illumination change using the same parameters. Experimental results show the feasibility of the proposed algorithm.

• 대한임베디드공학회논문지
• /
• 제17권6호
• /
• pp.337-346
• /
• 2022

This paper addresses the problem of vision-based ear loops ansd attachment inspection in mask production lines. This paper focuses on connections with ear loops and mask filter by an efficient combined approach. The proposed method used a template matching, shape detection and summation of histogram with preprocessing. We had a parameter for detecting defects heuristically. If the shape vertices are lower than the parameters our proposed method will find defective mask automatically. After finding normal masks in mask ear loops attachment status inspection algorithm our proposed method conducts attachment amount inspection. Our experimental results showed that the precision is 1 and the recall is 0.99 in the mask attachment status inspection and attachment amount inspection.

• 한국산업융합학회 논문집
• /
• 제27권1호
• /
• pp.71-76
• /
• 2024

Automatic production systems are constantly advancing technologies to improve productivity and safety. Specifically, liquid filling machines are primarily utilized to package products into drums after manufacturing process in the hazardous chemical industry. Most existing filling machines allow the operator to open the drum cap and inject the product directly or semi-automation. In this study, we have developed a cap opening and closing mechanism onto the existing drum filling machine, enabling automatic and safe cap manipulation while filling the product in the IBC tank. By applying the appropriate torque value through numerical analysis, we confirmed that the system worked without any problems during the process of opening and closing the cap. Therefore, it is expected that the developed machine will give more production and reduce human efforts without risk in the chemical packaging industry.

• 디지털콘텐츠학회 논문지
• /
• 제18권6호
• /
• pp.1175-1182
• /
• 2017

제4차 산업혁명은 IoT(Internet of Things) 빅데이터(BigData) 인공지능 등 다양한 기술들의 융합을 통하여 스마트 공장(Smart factory) 구현을 목표로 새로운 산업화를 시도하고 있다. 스마트 공장 실현을 위해서 다양한 이종기계들 간의 유연한 데이터 교환 방법이 가능한 통신 기술이 필요하고 표준 기술을 기반 생산 장비의 확장성이 고려될 수 있어야 한다. 본 연구에서는 이종기기를 포함하는 다수의 생산 설비로부터 데이터를 수집 및 통합하고, 모든 생산 장비를 감시할 수 있는 MTConnect기반 이종 공작기계 상태 정보 및 가공 정보 관리시스템을 제안한다. 개발된 시스템 기술은 유연 자동화 생산 라인의 핵심 기술로서 오류 검출, 가공 상태 관리 등 무인 자동화 라인의 중요한 정보를 제공 및 관리하는 기술을 제공할 수 있다.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2016년도 추계학술대회
• /
• pp.485-488
• /
• 2016

국내 온실용 복합환경제어 기술은 온도, 습도 및 $CO_2$ 등의 환경을 작물재배 기술 및 전문가의 자문을 통하여 환경을 설정하여 하드웨어를 기계적으로 조작하는 단계이다. 이러한 자동화는 노동력 절감 등의 단순효과는 있으나, 실질적인 생산량 증대 및 품질을 개선하기 위하여 식물의 생육, 생리상태를 실시간으로 추적하고 그에 맞게 실시간으로 최적 환경을 제어하는 소프트웨어 기반의 복합환경제어 기술이 필요하다. 따라서 본고는 이러한 복합환경제어기술의 방안제시의 일환으로 국내에서 수행중인 스마트팜 빅데이터 분석 체계와 인공신경망 기술동향을 분석하고, 이를 기반으로 인공신경망을 이용한 시설원예 생산량 예측 방안을 제시하고자 한다.

• 실천공학교육논문지
• /
• 제16권1_spc호
• /
• pp.1-9
• /
• 2024

스마트공장의 디지털 트윈에 대한 도입은 이미 CPS(Cyber Physics System)을 통하여 제조산업에 생산성을 높이고자 제안되었던 개념으로 특정한 산업 공정의 단계에 적용되거나 시뮬레이션이 필요한 단계에서 부분적으로 도입되고 있었다. 그러나 최근 4차산업혁명기술 발전을 통해서 XR(Extended Reality) 기술과 함께 다시 주목을 받고 있다. 하지만 실효성 있는 사례가 많지 않기 때문에 본 연구에서는 제조공정을 장치와 장비 그리고 기술을 분석하여 디지털 쓰레드를 적용한 디지털 트윈을 구축하였고 신호와 정보의 동기화하며 이를 통해서 지능형 공정자동화 장비의 관제와 원격제어와 생산정보의 분석이 가능할 수 있는 플랫폼을 제안하고 이를 개발하였다. 이로써 기존에 제조업에서 활용되어지고 있는 자동화 설비공정 및 장비들에 대한 고장 발생 시 원활한 대처의 어려움과 정확한 고장 발생지점에 대한 확인의 어려움, 그리고 생산설비장비의 고장시점 관리의 어려움, 불량에 대한 원인 및 문제 분석과 대처의 어려움을 해결하는데 도움을 줄 수 있는 제안 내용을 다루었다. 향후 본 연구를 통해서 많은 사례들의 선행 연구에 도움이 되길 기대하고 향후에는 지능형 모델을 통해서 공정 및 생산의 부분별 생산성 증가에 대한 확장 연구가 필요하다.