• 산업공학
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• 제21권4호
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• pp.378-384
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• 2008

Small sized companies have not been successful in systematically applying statistical process control because of insufficient human resources. In this paper we present a case study of automatic checking system for a small sized company which produces various types of gears. A systematic way of automatically measuring gears is proposed and statistical analysis methods are presented. To reduce variation in the measurement data, a standard operating procedure is also proposed. This case study can be helpful to quality assurance practitioners of small sized companies who are willing to develop checking or inspection systems for their products.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1991년도 추계학술대회 논문집
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• pp.191-193
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• 1991

This paper is described about the on-line, real-time quality information management system as the infrastructure of CIM, which we developed for the full automatic washing machine assembly line. This System is composed of Ethernet LAN, RS-485 Network, POP terminal, BAR CODE Scanner, PLC, ROBOT, measuring equipments and real-time processing software. We will run this system from next month regularly.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.925-928
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• 1995

Recently, the system of the industry demands quick and accurate measurement for the mass production and high quality. Also, we need to improve the accuracy to decrease the failure rate in automatic assembly processing and improve the confidence, durability and the compatibility of parts. To answer this tendency and requirement, we have developed many accrate measuring instruments and methods. In this paper, we develop the whidows program using the DSP board(TMS320C25) which is used the data acquisition and the Visual C $^{++}$ , a windows programming language. We perform the measurement, analysis and output process in GUI(Graphic User Interface)environment. By using system, we will save the time required for the hand-worked measurement and avoid the useless iterative measurement. Furthermore, we expect to improve the productivity through automotive quality control in manufacturing process.s.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2001년도 춘계학술대회 논문집(한국공작기계학회)
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• pp.131-136
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• 2001

The purpose of this paper is to develop image inspection system endows an automatic operating and measuring that the moment values are invariant with respect to variable object size and rotation. In this paper, using these moment feature vector with Hu s 7 invariant moment is also given. The characteristics of section which is applied in the mechanics used moment descriptor of invariant moment detection algorithm for image inspection system. Corresponding rates between 94% and 96% have been achived for all object tested.

• 한국의류산업학회지
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• 제8권5호
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• pp.591-596
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• 2006

In order to analyze the tailorbility of different fabrics for men's suit, FAST system has been used for measuring the distribution of mechanical properties in this study. As results, cashmere mixed woolen fabrics showed the minimum degree in relaxation shrinkage, formability, and shear rigidity than any other fabrics, and also showed more than 6% as maximum level of extensibility. Thus, cashmere mixed woolen fabrics requires careful tailoring in lay-out, marking, and cutting. It is necessary to establish new tailoring criteria for automatic sewing with cashmere mixed woolen fabrics than any other fabrics, because they show more failure rate of tailorbility. There have been noticeably more variation of shrinkage and extension for woolen fabrics with cashmere mixed than 100% woolen fabrics by evaluating the formability of the suits when these are completed to suits through cutting and tailoring from fabrics. Especially nylon mixed woolen fabrics showed shrinkage overall, but polyester mixed woolen fabrics showed extension at waist area. Thus, it is necessary to adjust the appropriate overfeed rate considering the amount of shrinkage and extension while tailoring.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 추계학술대회 논문집
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• pp.383-386
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• 2002

It is very important to inspect color of printed texture in the textile process. To distinguish the color of the printed texture, RGB color values obtained from a scanner must be transformed to the standard colorimetric system used in the textile industry. It is XYZ color system that is defined by CIE(Commission Internationale do 1Eclairage). The mapping from RGB to XYZ color values is not simple and the scanner has even a positional deviation of RGB colors. In this paper an automatic color inspection method using a general scanning machine is presented. We used a U(neural network) model to map RGB to XYZ and compensate the positional error. In the real experiments, this inspection system shows to get very exact XYZ values from the traditional scanner regardless of the measuring position.

• 제어로봇시스템학회논문지
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• 제1권1호
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• pp.58-62
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• 1995

Necessarily, it is required to analyze interfacial mechanism between tire and road for understanding tire wear, vehicle tracking and breaking. Therefore, there have been some efforts to measure 3-axis pressure and 2-axis displacement on tire road interface. But it was so hard to couple precisely measuring sensor and desired point on tire tread pattern block that it was impossible to analyze the mechanism on commercial tire with tread pattern. To overcome such a problem, a on-line measurement system is proposed in this paper. And an automatic control system is designed to test the tire with similar configuration of real vehicle driving.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.290-291
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• 2018

본 논문은 모바일 폰을 이용한 자동차 제어를 위한 임베디드 시스템을 설계하고, 아두이노 자동차 모델의 제어에 적용한다. 아두이노 자동자 모델에 여러 가지 센서를 부착하여 실제 상황에서 발생할 수 있는 사건들을 모의 실험하고, 자동차의 주변 환경에서 발생할 수 있는 장애물 감지와 자동차 간의 거리 측정을 통하여 상황에 대처하기 위한 자동 제어 알고리즘을 설계한다. 그리고 제안된 시스템의 타당성을 분석한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2449-2451
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• 2001

The purpose of this paper is to develop image inspection system endows an automatic operating and measuring that the moment values are invariant with respect to variable object size and rotation. In this paper, using these moment feature vector with Hu's 7 invariant moment is also given. The characteristics of section which is applied in the mechanics used moment descriptor of invariant moment detection algorithm for image inspection system. Corresponding rates between 94% and 96% have archived for all object tested.

• 한국조명전기설비학회지:조명전기설비
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• 제8권1호
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• pp.57-62
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• 1994

영상처리 방식을 이용하여 유기 절연재료의 트리잉 열화를 측정하였다. 전통적으로 목측(가시측정)에 의한 트리현상 변화를 관찰해 왔으나 트리형상 특징과 변화를 이해하는데 정확한 측정에 어려움을 만들었다. 영상처리 시스템을 이용한 트리 측정장치를 이용하여 트리진전길이와 열화면적들의 고유특성을 영상처리 시스템을 이용하여 목측치와 거의 대등한 결과가 나오는 트리진전 영상처리 자동계측 시스템을 구현하였다.