• 디지털산업정보학회논문지
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• 제5권1호
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• pp.99-105
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• 2009

Recently the research is much interested in about the inspection system using by computer vision system. In this paper, we deal with shape inspection technique for moving to be long and narrow object on conveyor belt. first, we are acquired for moving object on conveyor belt. then the object segmentation is using by color information for background and object. the object position be calculated by horizontal and a vertical histogram. second, we are checked for two hole in front part, widths and top/bottom side information in middle part, and finally checking for two holes in rear part. The performance of our proposed model is evaluated by experiments, within error of 1㎜, and can be checking to 17 object /min.

• 디지털산업정보학회논문지
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• 제8권4호
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• pp.1-11
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• 2012

This paper is the study on the development of a torque precision measuring system using the curve fitting algorithm. This system can be divided into the hardware part and the software part. The hardware part consists of the main base board, the DAQ(Data Aquisition) board and Calibration parts. The software part consists of the software filter module and the curve fitting algorithm module. We have tested the torque transducer including the strain gauge for 200 Nm range and have analyzed the data acquired with the curve fitting algorithm by using this system. The DAQ board converts the electric signal induced by the transducer to the digital value precisely by using the shunt calibration procedure. The main board including the curve fitting algorithm calculates the exact digital torque value by using the digital value from the DAQ board. In this study, we confirmed that the result of the appropriate high-order power-series polynomial function is more accurate than the result of the low-order power-series polynomial through the system.

• 산업경영시스템학회지
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• 제18권36호
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• pp.175-182
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• 1995

Industrial safety management program can be divided three part that is education, technology, and management. The effectiveness of a industrial safety management program depends on the ability to manage hardware which is technology and software, education and management, In this research, it will be described that how to design and develop Computer Integrated Safety System and Computer Based Training System for Press operations which is how to integrated industrial safety program wi th production planning and control in order to control efficiently using personnel computer system.

• 한국정보시스템학회지:정보시스템연구
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• 제23권2호
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• pp.49-66
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• 2014

In today's competitive business environment it is a necessary condition for a company to produce high-quality product for its survival and growth. That is the case in the auto-part industry as well where the international standards, ISO/TS 16949 certification, are required by customers to adopt mandatory. This study presents a successful implementation of quality management system(QMS) in a major auto-part manufacturer in Korea, utilizing SAP's QM(qualaity management) module and a mobile office system. The QMS brought the company "A" a variety of benefits such as real-time availability of product-inspection data, speedy decision-making, reduction in time required for defect-handling, ease of vertical integration of business partners in supply chain, and ease of business process standardization between headquarters and overseas subsidiaries. It is expected that the findings of this study can be used as a useful guideline for companies to consider implementing ERP-based quality management systems successfully.

• 한국콘텐츠학회논문지
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• 제8권12호
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• pp.386-395
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• 2008

호텔경영 정보시스템을 사용하고 있는 사용자의 인식수준을 통해 IT(system)의 업무기여 정도를 파악하고, Business와 정보기술의 연관관계를 규명하여 경영정보시스템의 향상을 도모코자 진행된 연구로, 연구결과 시스템을 통한 업무처리는 우수하나, 활용율 제고를 위한 개선이 필요한 것으로 조사되었다. 특히 숙박업의 형태에 있어 호텔과 리조트간의 인식에 차이가 있었으며, 개발방식에 있어서는 외국산 PKG보다 자체개발한 시스템이 화면조작이 용이한 것으로 조사되었다. 시스템 에러와 관련해서는 근무연수가 낮은 직원과 그렇지 않은 직원간의 차이가 있는 것으로 조사되었으며, 기능적인 측면에서 고객후불지원의 경우 프런트와 예약부서간의 차이가 있는 것으로 나타났다. 또한 대부분의 경우 시스템 이용에 있어 발생되는 문제에 대한 즉각적인 처리나, 시스템 지원체계의 구축 등에 낮게 인식하고 있었는데, 이는 최근 기업들의 IT S/M조직(시스템지원부서)을 outsourcing함으로써 자사직원이 아닌 외부용역업체이기 때문에 발생하는 것으로 사료된다. 호텔경영정보시스템을 구축함으로써 기업의 현재 실행하고 있는 업무의 지원수준은 상당이 높아진 것은 사실이나, 조사결과에서 처럼 사용자의 요구에 능동적인 대처와 현업의 업무를 끌어가며 선진적 업무의 방향성 제시가 필요하며, 이러한 정보시스템의 구축은 궁극적으로 기업의 가치창출을 지원하고, 현행업무의 효율성을 배가시키는 시스템이 되어야 한다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2012년도 춘계학술대회 논문집
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• pp.263-269
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• 2012

Condition-based maintenance (CBM) has been used as a useful concept for optimizing maintenance plan and decreasing maintenance cost in several kinds of plant sites. This study introduced an example that developed an integrated management system for maintenance parameters and hydraulic turbine of hydro-power plant in order to improve its maintenance system as applying CBM techinique. The integrated management system consists of three parts. One is a hardware part including PDA inspection system and several kind of precision measuring instruments. Another is a vibration monitoring system on hydraulic turbine. The other is a software part that takes charge of making hierarchy tree of maintenance parameters and their inspection route, managing accumulated database, assessing health condition of components, and supporting interface with other enterprise management system. The system has been installed at Chuncheon Hydro-power plant for test and demonstration. It is expected that the system can contribute database construction for diagnostics and prognostics on facility health condition and systematic accumulation of know-how on operation and maintenance of plant.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2002년도 춘계공동학술대회
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• pp.390-396
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• 2002

This study is concerned with the strict machine-cell and part-family grouping (MCPFG) in cellular manufacturing system design. Most of MCPFG methodologies often suffer from improper assignment of machines and parts in which exceptional machine has more common operations with machines in a cell other than its own cell and exceptional part has more operations through machines in a cell other than the cell corresponding to its own family. This results in the loss of similarity in part design or common setup of machines and the benefits from the conversion of job shop manufacturing into cellular manufacturing are lost. In this study, a two-phase methodology is proposed to find the machine-cells and part families under the strict constraints in which all machines and parts are assigned to its most proper cells and families. Test results with moderately medium-sized ill-structured MCPFG problems available from the literature show the substantial efficiency of the proposed approach.

• 한국소음진동공학회논문집
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• 제22권6호
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• pp.574-581
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• 2012

Condition-based maintenance(CBM) has been used as a useful concept for optimizing maintenance plan and decreasing maintenance cost in several kinds of plant sites. This study introduced an example that developed an integrated management system for maintenance parameters and hydraulic turbine of hydro-power plant in order to improve its maintenance strategy as applying CBM techinique. The integrated management system consists of three parts. One is a hardware part including PDA inspection system and several kind of precision measuring instruments. Another is a vibration monitoring system on hydraulic turbine. The other is a software part that takes charge of making hierarchy tree of maintenance parameters and their inspection route, managing accumulated database, assessing health condition of components, and supporting interface with other enterprise management system. The system has been installed at Chuncheon hydro-power plant for test and demonstration. It is expected that the system can contribute database construction for diagnostics and prognostics on facility health condition and systematic accumulation of know-how on operation and maintenance of plant.

• 품질경영학회지
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• 제18권2호
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• pp.9-17
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• 1990

This paper deals with a FOQ( ; fixed-order quantity) model for spare-part inventory control. In a spare-part inventory problem, stock depletion arises not from external market demand but from internal demand resulting from failures of parts in use. The problem differs from the classical inventory problem in that the demand for a failed part never arises more during stockout period, since the unit remains inoperative when stockout occurs until the failed part is replaced by new one. In the problem under consideration, n identical units are operating simultaneously and failed one is replaced immediately by new one if on-hand spares remain. In order to replenish spares, an order with quantity Q is placed whenever the number of on-hand spares falls to levels. The average annual cost of operating the spare-part inventory system is derived under the assumption that both lifetime of a part and replenishment lead-time distributions are exponential.

• 연구논문집
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• 통권26호
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• pp.57-68
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• 1996

Recently, a lot of researches on material handling system are actively studied for realization of FA(Factory Automation), FMS(Flexible Manufacturing System) and CIM(Computer Integrated Manufacturing). Management and application of material handling system are precondition technologies playing an important part in integration of production system including manufacturing. assemhly, and inspection cell. In this paper, the general situation of automation technology is investigated and technology level is analyzed in comparision with an advanced country. And the operation trend and part of material handling system including AS/RS, AGV, and Conveyor, are studied. And also technologies related to material handling system in the inside and outside of the country are studied.