• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.894-899
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• 1991

GRAFCET is the program language for a sequential control and utilized in the description of sequence of a process. This study is to implement GRAFCET editor and compiler for personnel computer. The GRAFCET editor module is developed to use as menu-driven method based on the graphic screen and the graphic symbol. So, users can use it interactively. The GRAFCET compiler module analyzes the already drawed GRAFCET diagram, then translates it to Z80 assembly code. After generating Z80 machine code from assembly code, we can send the outputed machine code file to Z80 one-board computer through RS232C. We have developed the GRAFCET programming tool to utilize under IBM PC/AT with the VGA monitor, and it may be contribute to low cost automation system.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.155-160
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• 2001

The road simulator system can simulate the longitudinal, lateral, and vertical movement changed by road conditions and vehicle dynamic characteristics while driving. This system provides the durability evaluation of vehicle suspensions. The system consists of hydraulic actuators, link mechanism, and servo controller. The hydraulic actuators are specially manufactured using low friction seals to endure high speed movement. The link mechanism is designed in order to minimize the dynamic effect during motion and remove the interference between 3axes actuators. The servo controller is composed of sensors, sensor amplifiers - displacement transducers and load cells, and an industrial PC with DSP board which calculates the control algorithm to control hydraulic actuators. The test results are included to evaluate the performance of this simulator comparing vehicle driving test.

• 한국산업융합학회 논문집
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• 제7권2호
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• pp.207-213
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• 2004

This paper describes the development of Behind-Tape-Reader (BTR) type DNC system using CYBER 180-830 as a central computer and IBM PC-AT cell control computer and NC lathe with FANUC 5T NC controller. In this system, the connection between central computer and cell control computer is done via RS-232C serial interface board, and that between cell control computer and FANUC 5T controller is done via parallel interface board. The software consists of two module, central computer communication module for NC program downloading and status uploading, NC machine running module for NC operating.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1997년도 Proceedings International Workshop on New Video Media Technology
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• pp.67-70
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• 1997

This Paper describes the system configuration and implementation method of an IMPRES (Interactive Multimedia exPRESS) terminal. The terminal is developed in the form of a PC add-on board that is called MINIBA (Media and Network Interface Board Assembly). IMPRESS is a communication service platform that support various interactive multimedia services. The main objectives of developing IMPRESS are to implement DAVIC compliant services platform to verify DAVIC specification and to support testing environment. Currently IMPRESS terminal provides MPEG-2 quality movies on demand, switched video broadcasting, and home-shopping service to the service user, based on the ATM network.

• 정보와 통신
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• 제10권10호
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• pp.22-29
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• 1993

This paper describes development of a real-time voice recognition dialing system which can recognize around one hundred word vocabularies in speaker independent mode. The voice recognition algorithm is implemented on a DSP board with a telephone interface plugged in an IBM PC AT/486. In the DSP board, procedures for feature extraction, vector quantization(VQ), and end-point detection are performed simultaneously in every 10msec frame interval to satisfy real-time constraints after the word starting point detection. In addition, we optimize the VQ codebook size and the end-point detection procedure to reduce recognition time and memory requirement. The demonstration system is being displayed in MOBILAB of Korea Mobile Telecom at the Taejon EXPO '93.

• Journal of information and communication convergence engineering
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• 제1권1호
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• pp.48-52
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• 2003

A cost efficient IPSec Accelerator board utilizing a crypto chip and an entry-level Linux PC for the high performance VPN is presented in this paper. The IPIP (IP-over-IP tunneling) processing, encryption & decryption processing, HASH processing, and the integrity test functions of IPSec are processed in the IPSec Accelerator board. The proposed IPSec Accelerator has demonstrated successful execution of the required functions of the IPSec packet processing and verified its performance by processing the IPSec packets at the rate of over 1 Gbps.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.987-989
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• 1996

This paper presents feedback control?method of educational robot made up of step motor by specific Tiny-C at PPI 8255 board of pocketcom(pocket computer; PC-E200). Machine language capacity of Tiny-C compiler(Ver 1.0) is about 22kbyte, and so it is easily transmitted from personal computer to pocketcom of conventional memory 32 kbyte. This experimental results show that Tiny-C control programs are practised on the pocketcom connected to PPI 8255 board for educational robot and X-Y plotter, and these are presented to show the effectiveness of the proposed algorithm.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.1219-1221
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• 1996

In this paper, we develop a control system of an Educational Robot and implement a fuzzy algorithm for the position control. The MA2000 robot manufactured by TecQuipment Co. is the controlled system and 3 axes(waist, shoulder, elbow) of total 6 axes are controlled by the fuzzy logic-based algorithm. The control system consists of an IBM PC, an interface board capable of A/D conversion and PWM generation, and a drive board for dc motors in joints of the robot. The experiments show that the modified fuzzy algorithm yields a better performance in steady-stale than that of the conventional fuzzy algorithm.

• 성인간호학회지
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• 제16권3호
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• pp.388-397
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• 2004

Purpose: The purpose of this study was to explore the effectiveness of informational intervention delivered by electronic patient information board in the OR waiting room for reduction of anxiety of mothers with child having operation. Method: Nonequivalent control group non-synchronized design was used in this study. The subjects was 52 mothers whose children underwent elective surgery in one Pediatric Hospital. Informational intervention in this study consisted of four critical stages. State anxiety by Spielberger, mean arterial pressure, and heart rates at preoperative and postoperative period were measured. The data were analyzed by using Chi-Square test and t-test with SPSS/PC 10.0 program. Results: 1) There was a significant difference in the state anxiety between the control and the experimental groups. 2) There was no significant difference in the mean arterial pressure between the two groups. 3) There was no significant difference in the heart rate between the two groups. Conclusion: The results of this study indicate that informational intervention delivered by electronic patient information board would be an effective intervention during the operation in reducing anxiety of mothers with child having operation.

• 한국게임학회 논문지
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• 제20권1호
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• pp.133-142
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• 2020

디지털 기능성 게임 시장은 스마트폰, 태블릿 PC등의 스마트 플랫폼으로 급격히 확대되면서 중요성이 커지고 있다. 게임이 디지털화되면서 교실 안에서 이루어지는 일방향적 교수법에서 양방향성이 가능한 단계로 발전해 가고 있다. 본 논문에서는 스마트 기기에 익숙한 초등학생들이 디지털 보드 게임을 통해 음악가와 연관된 음악적 지식을 습득하는 게임을 설계 및 개발하였다. 음악가와 연관된 음악가의 업적 카드를 수집하며 해당 음악가에 대한 정보를 얻어 학습하며, 초등학생들은 게임이 끝날 때까지 반복적으로 연관된 음악 지식을 얻게 된다. 개발된 게임은 게임 플레이의 흐름이 원활히 작동이 되는지 페트리넷을 활용하여 시뮬레이션을 진행한다.