• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1996년도 춘계학술대회
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• pp.15-15
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• 1996

A shop floor control system (SFCS) is the central part of a CIM system used to control the activities of several pieces of manufacturing equipment (e.g., NC machines, robots, conveyors, AGVs, AS/RS). The SFCS receives orders and related process plans, and then performs selecting a specific process routing, allocating resources, scheduling the workpieces, downloading the processing instructions (e.g., RS-274 instructions for NC machines, VAL II programs for robot), monitoring the progress of activities, detecting and recovering from errors, and preparing reports on the status of the manufacturing system. Simulation has been utilized in discovering control policies used for resolving shop floor be control problems such as resource contentions, part dispatching, deadlock. The simulation model must be designed to respond to real-time data coming from a shop floor. However, to rapidly build a realtime simulation model of SFCS cannot be easily accomplished. This talk is to address an automatic program generator of discrete event simulation model for shop floor control from process plans and resource models. The program generator is capable of constructing complete discrete simulation models for multi-product and multi-stage flexible manufacturing systems.

• 한국CDE학회논문집
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• 제4권4호
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• pp.339-349
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• 1999

The punose of this paper is to introduce the comprehensive CAM system (called PosCAM) supporting various function requested from shop floor operators. PosCAM is comported of two subsystems (PosCAM I and PosCAM II) which are designed to make up for the contemporary CAD/CAM systems. PosCAM I is mainly for : a) verifying the part programs written in both custom macros and standard G-codes, b) enhancing machining productivity and quality with built-in cutting conditions and feedrate optimization algorithm. PosCAM II is for : a) efficiently managing the numerous part programs and tool data stored in CNC memory, and b) integratively controlling and monitoring various CNCs from the control center through RS-422 with DNC 2 protocol. The developed systems have been tested via various experiments, and can be Applied for the industrial CNC machine shop as a means for enhancing productivity. The PosCAM system has been implemented and successfully used in the Machine Shop Department of PosCAM since march 1998.

• 산업경영시스템학회지
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• 제21권46호
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• pp.197-206
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• 1998

In recent years there has been a tremendous upsurge of interest in Shop Floor Control System (SFCS) design and analysis. We reviewed current computer-aided shop floor control system. It is concluded that current methodologies support, in a very restricted sense, these planning, scheduling, and monitoring activities and that enhanced performance can be achieved via an integrated approach. In this paper we present an interdisciplinary approach to the development and installing of sophisticated shop floor control systems. Interdisciplinary design will form the basis of designing SFCS in new knowledge intensive era. Interdisciplinary design means more than just applying knowledge from other domains, such as psychology and organization science to design of SFCS. The interdisciplinary approach is verified by an illustrative case study.

• 한국산학기술학회논문지
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• 제15권12호
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• pp.7025-7039
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• 2014

최근 구매사와 공급사 간의 정보 공유 및 협업 등의 아웃소싱 활동은 공급사슬관리에서 매우 중요한 전략으로 자리매김하고 있다. 아웃소싱은 경쟁우위 확보를 위해 필수적인 방안으로 활용되고 있으나, 계약이 체결된 이후에는 공급사에 대한 통제력이 저하된다. 이러한 상황에서는 공급사에 대한 모니터링을 통한 일상적인 통제만이 유일한 공식적 통제수단으로 남게 되며, 통제관리가 어떻게 이루어지느냐에 따라 기업성과에 영향을 미치게 된다. 본 연구에서는 아웃소싱 계약 체결 이후 공급사의 외주 구매성과와 구매사와 공급사 간의 운영통합 강화를 위한 전략을 제시하였다. 선행요인으로 공급사 모니터링을 고려하였으며, 공급사 모니터링 노력에 의한 외주 구매성과와 구매사와 공급사 간 운영통합을 강화하여 구매사의 현장생산성 향상으로 반영되는 연구 모형을 제시하였다. 연구결과에 따르면, 구매사의 역량 모니터링, 행위 모니터링, 결과 모니터링은 공급사의 외주 구매성과와 운영통합 강화에 유의미한 선행요인으로 나타났다. 또한, 공급사 모니터링은 공급사의 외주 구매성과와 공급사 운영통합을 완전매개로 하여 구매사의 현장생산성에 유의미한 영향을 미치는 것으로 분석되었다. 행위 모니터링의 부정적인 효과가 특이한 점으로 나타났는데, 행위 모니터링이 공급사 운영통합에 음(-)의 효과는 공급사 운영통합이 공급사 현장생산성 향상에 미치는 정(+)의 효과를 상쇄시키기 때문에 매개효과가 나타나지 않은 것으로 추정되었다. 이를 통해 이론적, 실무적 시사점과 본 연구의 한계점, 향후 연구수행 방안 등이 제시되었다.

• Journal of information and communication convergence engineering
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• 제7권4호
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• pp.459-464
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• 2009

This paper presents a production information monitoring system as an infrastructure of CIM system in footwear industry. The system is composed of hardware devices of terminal, communication converter, line controller and software for manufacturing processes. A terminal like a scanner is used for shop floor data input and a line controller is used to link between terminal and server. LAN and RS485 are used for connecting hardware components and deliver their information mutually. In the system, real time production information is acquired from information resources such as group of uppers and soles. The collected production information is delivered to a line controller and analyzed. Server receives information from line controller and machines for production management. Production planning information that is machined in the server is delivered to the shop floor and used for the production management of work in process, and used for improvement of productivity in a footwear production company. The implementation of the developed system shows the effectiveness of the system.

• 대한안전경영과학회지
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• 제5권2호
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• pp.87-98
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• 2003

With the development of CNC(Computer Numerical Control) and communication technology, the connotation and functions of Distributed Numerical Control have been greatly enlarged. In this study, we develop and implement a Distributed Numerical Control system that has real time and multi-tasking operation capability for the machining cell with various NC(Numerical Control) and CNC machines. With the consideration of economy, generalization and extension, this system is interfaced with Shop Floor Control System, Machine Control System and Tool Preparation System using advanced networking method. In the implementation phase, we use the ORACLE DBMS (Database Management System) as the DBMS and Microsoft Visual C++ as the programming tools.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1997년도 추계학술대회 논문집
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• pp.60-63
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• 1997

Recently, factory automation and shop floor control system need a web based remote monitoring technology to control effectively machine tool. This paper describes a web based remote monitoring system which is concerned with open architecture controller for machine tool. The environment of this system consists of a lot of elements such as web server, database, machine tool, pc based controller, client computers and script programs, also which is interconnected by network including intranet or internet. Designed script programs, also which is interconnected by network including intranet or internet. Designed script program service current status and faults information of machine to remote users who want to monitor machine tool. Additionally those have various functions to service we board for q&a, downloading data and information of after-service managers.

• 한국정보통신학회논문지
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• 제18권9호
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• pp.2079-2086
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• 2014

조선소에서 생산관리는 생산성 향상과 가장 밀접한 업무 중의 하나이다. 현업 생산관리자와 공정계획 엔지니어들은 상호 간의 정보 공유 미흡으로 인해 공정계획 및 공정관리에 대한 충분한 생산정보를 얻지 못한다. 본 연구에서는 생산계획과 공정관리의 요구사항 분석을 통하여 생산공정모니터링 시스템에 대한 주요 이슈를 도출하고, 콤포넌트 기반 설계 기법을 활용하여 시스템 아키텍처를 수립하였다. 제안한 시스템의 주요 기능은 블록 조립에서 안벽의장 단계까지 수립하여 생산공정현황을 시각적으로 보여 줄 뿐 아니라 공정정보 공유를 극대화하는 것이다. 본 시스템은 생산관리자에게 신뢰성 있고 정확한 생산 정보를 제시간에 제공할 수 있을 것으로 기대된다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 춘계학술대회 논문집
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• pp.1005-1010
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• 2000

Internet service has widely used in office automation such as, manufacturing management purchase, and material resource. Nowadays, factory automation and shop floor control system including CAD/CAM department need a web based monitoring and diagnosis to achieve global collaboration and tole-service. This raper deal with design of web based remote monitoring and diagnosis system which concerned with open architecture controller for machine tool.

• 동력기계공학회지
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• 제9권4호
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• pp.181-186
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• 2005

Because of advanced control technology, Shop floor control system of various kinds of equipment and machinery need a web based remote monitoring to control process efficiently. This paper presents the development of Operation Control System. Operation Control System(OCS) is based on intelligent web monitoring, so that OCS is improved the working condition for the line of heat treatment process and the product's quality. The developed OCS is consisted of Atmega128(MCU) based on embedded system, running the data logging of the line of heat treatment process. Web monitoring system is based on CS8900 ethernet controller and TCP/IP for remote monitoring responsibility between a server and clients and controlling the progress of entire system. The developed OCS is implemented on the line of heat treatment process and shows the improvement of environment condition, product's quality and efficiency of process line.