• Digital Contents
• /
• no.7 s.86
• /
• pp.70-73
• /
• 2000

1Kbit DRAM, 최초의 마이크로프로세서 Intel 4004가 1970년대 처음으로 세상에 나온지 약 30년이 경과되었다. 4004는 4비트 프로세서로 집적 트랜지스터 수 2,300개, 동작 주파수 750KHz, 16핀으로 내장되었다. 이 시점에서 누가 현재의 고성능 프로세서의 출현을 예측이나 했을까 4비트에는 있는데, 하나의 프로세서가 한개의 침에 탑재되어 실용화되어, 원칩 프로세서가 스타트를 끊었던 것이다. 오늘날의 DEC Alpha21264에는 1,520만개의 트랜지스터를 집적해서 600Mhz 587핀으로 내장되었다. 이러한 발전의 원동력은 반도체 집적회로의 기술의 비약적인 발전은 물론, 계산기 아키텍처, 컴파일러, OS등을 완수하는 역할도 대단히 크다. 본 원고에서는 주로 1990년대의 계산기 아키텍처의 변천을 살펴보고 향후 10년의 발전을 전망하려 한다.

• Journal of Power System Engineering
• /
• v.7 no.1
• /
• pp.42-50
• /
• 2003

최근의 배전반 설비의 고성능, 안정성, 신뢰성은 전기에너지의 사회적 욕구로 요구되고 있다. 본 논문에서는 전력품질에 관한 정보를 수집하고 통합 모니터링과 설비의 보호, 그리고 다양한 장치들을 제어할 수 있는 전력 모니터링 시스템의 개발에 대하여 고려하고자 한다. 전력품질 모니터링을 통하여 수집된 정보는 시스템의 효과적인 운용과 사용상의 신뢰성을 개선시킨다. 본 시스템은 크게 하드웨어부와 소프트웨어부로 구성된다. 하드웨어부는 원칩 마이크로 프로세서(Intel 80C196KC)를 사용한 측정과 제어, 통신 그리고 입/출력을 담당하는 다기능 인디케이터와 컨트롤러로 구성된다. 다양한 기능의 모니터링, 데이터베이스와 제어를 PC상에서 구현하기 위한 소프트웨어부는 사용자 그래픽 인터페이스(GUI) 기반의 비주얼 프로그래밍을 사용하여 개발되었다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.20 no.11
• /
• pp.2100-2106
• /
• 2016

The automation system uses PLC to monitor the manufacturing process status of the production product and processes the sensor information transmitted from the sensor. In this paper, we propose a remote surveillance system to monitor the status of control relay used in automation system. The proposed system consists of a control relay module, a one-chip processor module, a computer monitoring system, and a database system that inputs and manages the details of the control relay. The computer monitoring system is configured to monitor the operating condition and life time of the control relay. The database is configured so that the input date of the control relay can be input and corrected, and the operating state information of the control relay can be automatically printed. In the remote monitoring system, the failure status of the control relay is recognized in real time, and the time required for normal operation can be minimized by quickly replacing faulty parts.

• Journal of Korea Society of Industrial Information Systems
• /
• v.4 no.2
• /
• pp.32-38
• /
• 1999

In this study, an objection is to develop a electronic circuit of a gauage using radioisotope for compaction control to be needed at public works The developed gauage makes use of radioisotope with the activity exempted from domestic atomic law and consists of measuring circuits for gamma-rays and thermal neutrons, a high voltage supply unit and a microprocessor. To obtain meaningful numbers of pulse counts, parallel five and tow circuits are provided for gamma-rays and thermal neutrons, respectively. Also, to minimize effects of natural environmental radiation and electrical noise, circuits are electrostatically shielded and pulses made by ripples are eliminated by taking frequency of high voltage supplied to the circuit and pulse height of ripples into consideration One-chip microprocessor is applied to process various counts, results are stored, Enough and meaningful numbers of pulses are counted with the prototype gauage for compaction control.

• Proceedings of the KSME Conference
• /
• 2003.04a
• /
• pp.863-867
• /
• 2003

This paper aims at the development of shoes measuring the performance of walking or running, which is equipped with electronic devices. In the in-sole of the shoes, a piezoelectric sensor is inserted for measuring the number of steps and the speed of walking. The measured signals are processed by the one-chip microprocessor and related electronic devices. Using the data, the momentum and calories of walking and running are calculated, and the results are transmitted to the displaying system composed of LCD by the RF telecommunication system.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• v.28 no.5
• /
• pp.518-525
• /
• 2004

The thermoelectric device was applied to a car seat to control the hot temperature in the summer and cold temperature in the winter. The characteristics of the device used to a car seat were analyzed. The air conditioning structure was designed to regulate the hot side of the thermoelectric device. To control the temperature of the car seat, a robust control algorithm based on the sliding mode control was applied, and a controller using one-chip microprocessor was developed. The performance of the proposed controller through experiments was shown.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.9 no.2
• /
• pp.327-332
• /
• 2008

New RF matcher module has been proposed in this paper for improvement of RF matcher in plasma etcher system using in semiconductor and display panel manufacturing process. New designed warm gear was used instead of bevel gear in new driving module, and control system was re-arranged with one-chip micro-process technique. The matching performance of new match module was improved in various process condition with reduction of backlash and matching time, and flexible motion of motor compared commercial match module. However this new type RF match module will improve the productivity in etching process of the mass production line.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.11 no.2
• /
• pp.94-101
• /
• 1997

This paper proposes the equalizing charger of series connected batteries which are controlled by the time-sharing method. One-chip microprocessor dectcts the terminal voltage of each battery and then determines the charging time inversely proportional to the terminal voltage so that it decrease the un¬balanced capacity. This system is compact and light, therefore it can be applied to portable equipment such as charger for electric vehicle. And it's so effective as to prevent from overcharging which causes their life to shorten.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2016.10a
• /
• pp.709-711
• /
• 2016

An automatic control system to control a machinery system is managed by the PLC(Program Logic Control) and measured a machinery status from the sensor information to improve productivity in the industry field. This paper to propose a diagnostic monitoring system consists of a relay module, a one-chip processor module and a computer monitoring system. To improve productive capacity, the system is to check an auxiliary relay's trouble by a real-time monitoring.

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.7 no.3
• /
• pp.27-33
• /
• 1993

This paper presents the &tal controller for driving high frequency voltage fed PWM inverter that carrier frequency is over 2OkHz.We analyzed the conventional PWM to select a proper PWM pattern. as the result, obtained PWM pattern of the controller in which asynchronus staircase sinusoidal waveform is used as reference signal, and variable carrier ratio method was used for PWM control. The PWM controller is designed by fully digital method. Especially, Thk proposed controller is consisted of 8 bit one-chip microprocessor and digital logic. the former is for arithmetic and data processing, and the latter is for PWM pattern synthesis. Therefore, The responsibility and controllability is improved. Also, Data processing capability is improved using proper program to output modulation index with 9 bits. Circuits configuration of digital controller are made up of one chip 8051 and EPLD, and its controllability is tested by operating voltage fed inverter. Harmonics and current waveform is evaluated and analyzed for the voltage fed inverter system.