• Proceedings of the Korean Information Science Society Conference
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• 2006.10a
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• pp.218-222
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• 2006

최근 산업현장에서는 작업의 빈번한 변화에 따른 로봇의 재배치, 테스트로 인해 많은 비용이 소모되고 있다. 이러한 문제점의 해결방안으로 OLP(Off-line Programming) 시뮬레이션 시스템이 주목받고 있다. 현재 대부분의 OLP 시뮬레이션 시스템은 하나의 컴퓨터에서 실행되는 하나의 응용프로그램으로 되어있다. 따라서 로봇을 제어하는 시뮬레이션 프로그램이 복잡해지고 시뮬레이션 대상이 되는 작업장의 규모가 커지게 되면 이와 비례하여 시뮬레이션에 소모되는 시간이 늘어나게 되고 이로 인하여 시뮬레이션 진행상황을 실시간에 맞추어 출력하지 못하게 되는 경우가 발생하게 된다. 또한 하나 컴퓨터에서 실행되는 응용 프로그램의 한계로 인해 시뮬레이션 상황을 출력하는 화면크기는 제한될 수밖에 없어지고 여러 작업장의 시뮬레이션 진행상황을 동시에 확인하기가 힘들어 진다. 본 논문에서는 이러한 문제점을 해결하기 위하여 하나의 PC에서 실행되는 OLP 시뮬레이션 시스템을 사용자가 지정하는 로봇의 집합 단위로 네트워크로 연결된 여러 개의 PC에서 실행할 수 있도록 하여 다수의 로봇 제어 프로그램을 실행하는데 걸리는 부하와 시뮬레이션 진행 상황을 출력하는 CAD시스템에 걸리는 부하를 분산 시키고 연결된 여러 PC를 통해 시뮬레이션 진행상황을 자유롭게 확인할 수 있는 구조를 제안하였다. 그리고 시뮬레이션 시스템의 분산화로 인해 발생하는 동기화 문제에 대한 해결 방안으로 기존 시스템에 사용되는 이벤트/사이클 혼합 방식의 로봇 시뮬레이션 시스템의 알고리즘을 분산시킨 방안을 제시하였다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.28 no.3
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• pp.294-300
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• 1995

In aquaculture industrial field, an automatic management and control system is needed to cope with the difficulties such as expensive wage, ripe age of management worker and risk according to the unexpected change of environmental conditions in the aquarium. This paper introduces an automatic aquarium monitoring and control system. The system is developed using PC single board computer. A PC can be connected to multi-single hoard computers, and the communication between PC and single board computers is based on RS-422/485 interfacing method. The physical data of pH, DO, temperature and water level etc. are real-timely treated in the single board computer though individual transducers, transfered to the main monitoring PC through RS-422/485 communication, and those data are graphically shown on the PC monitor. Furthermore, the environmental circumstance can be monitored through the image processing system, and the emergency system can be operated under the condition of environmental incident such as electric power stoppage, DO deficiency, pump shut down and low level water etc.

• Proceedings of the KIPE Conference
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• 2003.07a
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• pp.40-44
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• 2003

In this paper, a PC-based virtual measuring program for efficiency analysis of DC-DC converter is developed. Furthermore, a newly developed, highly accurate and reliable data acquisition system for DC-DC converter is presented. The virtual measuring system consists of two different types of monitoring and measuring system. Also, this paper give a full explanation for a LabVIEW realization of the measuring system for DC-DC converter.

• Proceedings of the IEEK Conference
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• 2001.06e
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• pp.157-160
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• 2001

We studied about the lighting control system on pc using PLM(Power Line Modem). The PLM is composed of FSK IC-chip and the circuit for the power line communication. We developed the control program using visual c++ language on PC for dimming the lamps. In this paper dimming controller was made with PIC161F874 and its communication speed was 1200 boad rates.

• Journal of the Korean Graphic Arts Communication Society
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• v.9 no.1
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• pp.1-11
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• 1991

In this reseach, double-layered photoconductor consist of the carrier generation layer(CGL) of $\varepsilon$ type copper phthalocyanine thin film by an aqueous coating method and the carrier transport layer(CGL) of polyvinyl carbazol(PVK) by spin coating. We inverstigated effect of the surfactant solution and cathod electrolysis to the crystal type of $\varepsilon$-CuPc in CGL with TEM, SEM and X- ray diffraction spectroscopy and studied the mechanism of an aqueous coating for the preparation of CGL. The effect of the washing of CGL about the electrophotographic characteristics of the $\varepsilon$-CuPc/PVK doublelayered photoconductors is studied also.

• IE interfaces
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• v.6 no.2
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• pp.171-181
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• 1993

In this study, a process management system is designed that can automatically control the heat treating atmosphere, and a managment software is developed to monitor and control continously the heat treating process using a n interface device. Especially, a communication protocol is developed to control and monitor atmosphere condition, temperature, surrounding gas, and time. The developed interface device, called COMPORT SELECTOR is to send and receive information from PID controllers and PLC via RS-232C communication. This system will reduce manufacturing cost and cycle time, and improve the effectiveness of working process and quality.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.11a
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• pp.351-353
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• 2007

기존의 방법으로 소프트웨어를 개발하는 것은 매우 비생산적이다. 소프트웨어의 기능과 성능에 상관없이 PC 에서 시뮬레이션을 통해서 개발할 수 있다면 하드웨어를 구현해야 하는 조건이 없어지기 때문에 시간과 비용이 절감되고 제품의 질도 향상될 것이다. 이 논문에서는 PC 에서 시스템 모델을 실행시켜 소프트웨어를 개발하고 테스트할 수 있는 프레임워크를 제안하고 실제로 비데를 테스트하는데 적용시켰다.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.5 no.1
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• pp.65-70
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• 2011

A communication is one of the most important factors for the human beings. Therefore, people who have some problems in communication need an Augmentative & Alternative Communication (AAC) intervention to live in the human societies and several AAC systems have been developed to help the people. Lately, smart-phone is widely used to people as a communication device which can connect between persons. It can provide many useful methods and Apps to the user. If the AAC system is unified to the smart-phone, it is very effective device to the people with disabled because they can reduce the excessive expense and easily accommodate themselves to the AAC system. In this paper, an AAC program which is installed in the smart-phone or tablet PC is introduced. It has basic AAC solutions and can send SMS message to other people. We expect that the developed device can help the communication of the people with disabled and solve the social isolation of the disabled person.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.10
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• pp.2171-2176
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• 2012

PCs and its peripherals uses more power in standby mode even if they are not actually being used. In particular, PCs and its peripherals used in school and office, plugged in at all times during working hours, but not used much time, even if turned off consume a portion of the power. In this paper, we developed Networked Smart Plug for Power Management of PC & Peripherals which is consist of EMS, Smart Plug, PC Agent and Smart Phone App. for power saving of PC and a variety of peripheral devices in office or home, and evaluated the performance of the system.

• Journal of KIISE:Computing Practices and Letters
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• v.9 no.1
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• pp.95-99
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• 2003

In addition to wired communication technology, wireless communication technology has had communication revolution nowadays. Bluethooth technology carries out data/voice communication within pico-net. Nowadays the various services are supported by access network connected to public network. This paper presents implementation of bluetooth protocol analyser which simulates bluetooth protocol. MS window98 and visual C are used for development environment and application program is operated over the firmware loaded on the bluetooth device connected to the PC through UART which of the maximum transmission rate is 115kbps because transmission rate less than 20kbps affects rarely the performance. The performance analysis on the propose system is carried out as simulating the signalling information for the voice test and the traffics between two bluetooth systems for file transfer. The throughput analysis for file transfer service and call processing capacity for voice service are considered as performance analysis parameters. File access time is very important parameter and throughput is 13 kbps in case breakpoint time to file access is 0.04sec. Also call processing time is about 16.6ms in case of communication with the headset. The performance analysis of simulation results satisfies with bluetooth device development.