• Agribusiness and Information Management
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• 제7권1호
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• pp.1-9
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• 2015

The purpose of this study is to develop a growth prediction model that can predict growth and development information influencing the production of citrus fruits: the growth model algorithm that can predict floral leaf ratio, number of fruit sets, fruit width, and overweight depending on the main period of growth and development with consideration of the applied weather factors. Every year, large scale of manpower was mobilized to investigate the production of outdoor-grown citrus fruits, but it was limited to recycling the data without an observation supporting system to systemize the database. This study intends to create a systematical database based on the basic data obtained through the observation supporting system in application of an algorithm according to the accumulated long term data and prepare a base for its continuous improvement and development. The importance of the observed data is increasingly recognized every year, and the citrus fruit observation supporting system is important for utilizing an effective policy and decision making according to various applications and analysis results through an interconnection and an integration of the investigated statistical data. The citrus fruit is a representative crop having a great ripple effect in Jeju agriculture. An early prediction of the growth and development information influencing the production of citrus fruits may be helpful for decision making in supply and demand control of agricultural products.

• 전자공학회논문지CI
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• 제44권2호
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• pp.31-36
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• 2007

본 논문은 RFID를 이용한 생산 작업관리 시스템의 구현에 관한 연구로써 RFID Card를 이용, 생산계획 및 작업지시서 작업공정시간 등의 모든 데이터를 실시간으로 수집 및 집계하여 라인별 공정별 생산현황정보를 자동으로 분석 조회 할 수 있는 솔루션을 제공하였다.

• 한국정보시스템학회지:정보시스템연구
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• 제17권4호
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• pp.301-319
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• 2008

The display market has been replaced by the FPD (Flat Panel Display) from the CRT (Cathode-Ray Tube) since the late 1990s. In the FPD production line, the most equipment has high price. Thus, when the equipment has multi-function, the repetitive process is arranged for the equipment. However, such disposition of equipment results in more complicated process flow owing to repetitive operations. This reduces the production capacity and increases lead-time in turn. In this paper, we develop an AutoMod simulation system that derives to information about the quantity, production lead-time, utilities of facilities, and occupation rates of racks. In this simulation system, we consider the situation where the equipment might be broken and suspended randomly. For the developed system, we first evaluate a production plan with current layout and then, propose a revised alternative plan. Using the same simulation scheme, we investigate comparing the production quantity and lead-time with the two plans. In addition, for a proposed alternative, we try to forecast the most adequate rule between the two job dispatching rules which are FOR (Fewest Operation Remaining) and FCFS (First Come First Serve) through simulation.

• 한국정보시스템학회지:정보시스템연구
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• 제26권2호
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• pp.143-164
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• 2017

Purpose The purpose of this study is to investigate to investigate the effects of cloud system on the efficiency improvement and cost-saving of production processes. It also tries to provide small- and medium-sized companies and IT practitioners with a practical guideline for a successful implementation of could systems. Design/methodology/approach This study was conducted by observing and analyzing a case of implementing a cloud system at a small-sized company having multiple job sites in terms of the improvement in data-sharing efficiency and cost-saving of production processes. Findings This study found that cloud system was an effective way of sharing data between and among production processes of geographically scattered job sites and thus, helped the company to remedy problems of work schedule and load-balance along sequential production processes. Cloud system also allowed the company to reduce the number of visits made by 3-inspectors to four job sites by 75% and the personnel cost related to inspectors' site visit.

• 산업경영시스템학회지
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• 제18권36호
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• pp.193-203
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• 1995

The production management system software which can be applied In the medium and small companies is developed. Since the medium and small companies hesitate to install the computer system for production management owing to the lack of funds and the complexities of operation, the system is made to be used in PC and only requires minimum input data. This system is composed of interrelated modules for receive/order release, inventory management MRP, new product registration, document management and production scheduling. In this paper the architecture of the system, functions of each module, and information processing procedures of each funtion are discussed.

• 한국정밀공학회지
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• 제31권7호
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• pp.597-604
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• 2014

High efficiency production requires the improved performance of CAD/CAM system. Although the CAD and CAM have been significantly developed over the last three decades, they must still study on the reuse of information during process. In this study, we developed a new integrated CAD/CAM system which can reuse the information generated in previous processes, in order to improve its performance. In addition, the developed system was verified by comparing with working-time, and system reproducibility was also examined with tolerance in the unmanned operation. Experimental results showed 58% reduction in working-time of 2D Auto-CAM module, 80% in case of 3D Auto-Exchange module, and 54.5% in case of Auto-Design module.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.211-214
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• 2014

제조 생산 기업에서 도입하고 있는 MES (제조실행시스템: Manufacturing Execution System) 역시 이러한 시장 변화에 부응하기 위해 스마트화 및 IT융합화를 실현해야하는 현실에 놓여있다. 더욱이 최근 비즈니스 환경이 글로벌화(globalization) 됨에 따라 지역적으로 하나의 공장에서 제한적으로 생산되는 제품들이 다국적이고 분산적으로 생산하게 된다. 따라서 하나의 공장 운용 시스템을 관장하던 로컬(local) MES가 글로벌(global) MES 솔루션으로 확장되는 동시에, 로컬 MES간 생산 자원(production resource)을 상호 공유하는 시스템으로 변화되어야 한다.

• 산업공학
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• 제15권1호
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• pp.26-39
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• 2002

Two key data areas of the integrated production database in computer-integrated manufacturing (CIM) systems are the product structure in the forms of bills of material(BOM) and the process structure in the forms of routings. The great majority of existing information systems regard the BOM and routing as two separate data entities, possibly with some degree of cross-referencing. This paper proposes new information structure called the bills of material and routings(BMR) that logically integrates the BOM and routings for the CIM systems in ship production. The characteristics of ship production are described as: 1) make-to-order production type, 2) combined manufacturing principles (workshop production and construction site production), 3) significant overlapping of design, planning and manufacturing, 4) very long order throughput time, 5) complex product structure and production process. The proposed BMR systematically manages ail parts and operations data needed ship production considering characteristics of ship production. Also, the BMR situated on the integrated production database more efficiently supports interface between engineering and production functions, and integrates a wide variety of functions within production such as production planning, process planning, operation scheduling, material planning, costing etc., and simplifies information flow between sub-systems in CIM systems.

• 한국산업정보학회논문지
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• 제16권2호
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• pp.73-83
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• 2011

생산 시스템에 있어서 일정계획은 많은 비용이 투자된 생산설비 및 기계를 효율적으로 운영한다는 의미에서 매우 중요하다. 계획과 실행에서 오는 차이를 줄이기 위한 생산 시스템인 제조실행 시스템(Manufacturing Execution System : MES)의 효율성을 높이기 위해서 일정계획은 대상이 되는 작업의 특성에 적합한 일정계획 할당규칙 (Dispatching rule)에 대한 선정방법이 필요하다. 따라서 본 논문에서는 공정계획의 데이터에서 얻어지는 작업특정을 기반으로 시뮬레이션 (Simulation)을 진행하여 일정계획 할당규칙을 선정한다. 시뮬레이션을 통해 얻어진 정보를 지식기반 사례추론 방법론의 하나인 온톨로지(Ontology)로 구성함으로써 작업할당규칙 선정에 의한 적응형 일정계획 플랫폼을 개발한다. 구현하는 플랫폼은 특정 작업장에만 국한되지 않고 다양한 작업장에 적용시킬 수 있는 일정계획 시스템이라는 장점이 있다. 본 시스템 개발을 위해 온톨로지 추론 부분은 RacerPro와 Prot$\acute{e}$g$\acute{e}$를 이용하였으며, 일정계획 시뮬레이션은 JAVA와 FlexChart를 사용하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.265-266
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• 2021

본 논문은 사물인터넷을 이용한 노지 농작물 재배 시스템 구축 사례를 설명하고 노지 작물 재배 시스템에서의 환경 변수를 정의하였다. 다양한 센서을 통해서 토양의 온도, 함수율, 전기전도도, 산성도를 측정하여 LoRa 통신 모듈을 이용하여 서버로 정보를 전달하고, 서버는 이 데이터를 바탕으로 시비량 및 관수량을 제어한다. 노지 농작물 재배에 적합한 통신 방식인 LoRa 기술을 이용하여 넓은 노지를 관리하고 생산량 및 판매실적까지 관리하는 시스템을 개발하였다.