• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
• /
• pp.173-176
• /
• 2000

This paper presents the development of an 8051-compatible microcontroller. The 8051 microcontroller is one the most popular mjcrocontroller used nowadays. All the features of the 8051, including peripherals, are implemented. The output of this work is a synthesizable RTL model that is readily available for a simple control unit in a more complex chip, such as an SOC. We put some important notes relating to the implementation of the 8051's features, including bit addressing, multiplication/division, etc.

• 컴퓨터교육학회논문지
• /
• 제10권4호
• /
• pp.113-124
• /
• 2007

본 논문에서는 마이크로콘트롤러 8051 가상 실험실과 원격실험실을 결합한 통합 실험실을 제안하였다. 마이크로콘트롤러 8051의 기초적인 이해와 실습동작 과정을 쉽게 자바 애플릿과 플래시를 이용하여 동적으로 동작하는 가상실험실을 구성하였으며, 원격실험실에서는 학습자는 C언어와 어셈블리어로 8051제어 소스를 작성하고 작성된 소스 파일을 서버에 업로드 하여 컴파일 및 링크할 수 있다. 이 과정을 통해 생성된 실행파일을 서버에 연결되어있는 하드웨어 8051 실습키트에 다운로드하여 실행하도록 구현하였다. 또한, 실행 결과의 확인은 웹 카메라를 통해 학습자의 PC에 영상데이터를 전송하여 8051키트의 동작을 학습자들이 확인하게 된다. 제안한 통합실험실은 실제실험환경과 같은 이점들을 학생들에게 제공하고 있다.

• 전기전자학회논문지
• /
• 제19권4호
• /
• pp.625-631
• /
• 2015

본 논문에서는 데이터 전송을 위한 전용 명령어 및 I/O 포트를 탑재한 8051 마이크로콘트롤러를 설계하였다. 설계된 8051마이크로콘트롤러는 외부 디바이스를 제어하고 데이터를 주고받기 위해 2개의 UART 포트와 1개의 SMBus 포트를 탑재하였으며, 이들 포트를 운용하기 위한 전용 명령어를 개발하여 명령어 집합에 추가하였다. 이에 따라 여러 디바이스를 동시에 제어하고 데이터를 전송할 수 있으며, 응용 프로그램의 코드 크기도 줄일 수 있다. 특히, 다수의 디바이스와 데이터를 주고받는 동안에도 마이크로콘트롤러가 멈추지 않고 다른 프로그램을 수행할 수 있어서 동작 효율을 크게 향상할 수 있다. 0.18 um 공정에서 합성한 결과, 전용 명령어 추가로 인한 하드웨어 크기 증가는 무시할만하며, 모든 명령어 및 I/O 포트가 정상적으로 동작하는 것을 FPGA 보드에서 확인하였다.

• Nuclear Engineering and Technology
• /
• 제54권12호
• /
• pp.4422-4430
• /
• 2022

Studying the effects of gamma radiation on the instrumentation and control (I&C) system of a nuclear power plant is critical to the successful and reliable operation of the plant. In the accidental scenario, the adverse environment of ionizing radiation affects the performance of the I&C system and it leads to inaccurate and incomprehensible results. This paper reports the effects of gamma radiation on the AT89C51RD2, a commercial-off-the-shelf 8-bit high-performance flash microcontroller. The microcontroller, selected for the device under test for this study is used in the remote terminal unit for a nuclear power plant. The custom circuits were made to test the microcontroller under different gamma doses using a ⁶⁰Co gamma source in both ex-situ and in-situ modes. The device was exposed to a maximum dose of 1.5 kGy. Under this hostile environment, the performance of the microcontroller was studied in terms of device current and voltage changes. It was observed that the microcontroller device can operate up to a total absorbed dose of approximately 0.6 kGy without any failure or degradation in its performance.

• 한국컴퓨터산업학회논문지
• /
• 제8권4호
• /
• pp.221-228
• /
• 2007

Many kinds of microcontrollers such as 8051, PIC16 and Atmega series are used for the automatic control system, home appliances and communication equipments manufacturing. It is very important to understand the basic operational principles of microcontrollers and their design concepts. There are many kinds of educational microcontroller trainers and also they are designed and assembled very complicatedly. For the students or developers, it is very difficult to catch the basic operation schemes and apply the techniques to the control system. And also it requires much cost and time for the various kinds of trainers purchasing. In this paper, standardization of pins layout and peripheral modules for the general microcontroller usage was introduced and tested with 89C2051, 89C51, PIC16F84, PIC16F877, Atmega8535 and Atmega128, etc. As a result of test, it was found that saving the cost and time using this suggested device was possible. And also it was very effective way to understand microcontroller design and programming techniques.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2008년도 학술대회 논문집 정보 및 제어부문
• /
• pp.445-447
• /
• 2008

The CCTV systems is the most extensively used for a burglar proof, a crime prevention and a Prevention forest fires etc. The CCTV systems which is used in present is a PAN/TILT form. We want to control of CCTV systems motion by Up/Down, Left/Right, Zoom In/Out, Focus, TELE. We design a 8051 microcontroller board and a Key Controller and a Relay Controller. We conformed its feasibility through the simulation.

• 한국항행학회논문지
• /
• 제12권2호
• /
• pp.91-99
• /
• 2008

본 논문에서는 글로벌스타 위성 모뎀을 이용한 무선 원격제어 및 감시 시스템을 구축하였다. 시스템은 C8051F023 마이크로컨트롤러를 이용한 글로벌스타 위성 시스템 단말장비와 WGIS(Web-based GIS)를 이용한 사용자 프로그램으로 구성된다. 이를 통해서 단말장비와 사용자 프로그램 사이의 무선 원격제어 및 감시를 실험하였다. 사용자는 WGIS 프로그램를 사용한 Main 및 Control 다이얼로그를 통하여 용이하게 단말장비를 제어 및 감시 할 수 있으며 또한 위치정보를 확인 할 수 있었다. 단말장비 및 사용자 프로그램의 데이터 통신을 위해서 글로벌스타 위성 모뎀을 위한 PPP 및 TCP/IP 프로토콜을 구현하여 데이터 통신을 원활하게 수행할 수 있도록 하였다. GIS(Geographic Information System) 도구는 ESRI사의 ArcView와 MapObject로 구성되며 GIS를 통하여 사용자에게 시각적으로 다양한 정보를 제공할 수 있었다.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2004년도 ICCAS
• /
• pp.196-201
• /
• 2004

In biometric and biomedical applications, a special transporting mechanism must be designed for the ${\mu}$TAS (micro total analysis system) to move samples and reagents through the microchannels that connect the unit procedure components in the system. An important issue for this miniaturization and integration is microfluid management technique, i.e., microfluid transportation, metering, and mixing. In view of this, this study presents an optimal fuzzy sliding-mode control (OFSMC) design based on the 8051 microprocessor and implementation of a complete microfluidic manipulated system implementation of biochip system with a pneumatic pumping actuator, a feedback-signal photodiodes and flowmeter. The new microfluid management technique successfully improved the efficiency of molecular biology reaction by increasing the velocity of the target nucleic acid molecules, which increases the effective collision into the probe molecules as the target molecules flow back and forth. Therefore, this hybridization chip was able to increase hybridization signal 6-fold and reduce non-specific target-probe binding and background noises within 30 minutes, as compared to conventional hybridization methods, which may take from 4 hours to overnight. In addition, the new technique was also used in DNA extraction. When serum existed in the fluid, the extraction efficiency of immobilized beads with solution flowing back and forth was 88-fold higher than that of free-beads.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1996년도 하계학술대회 논문집 A
• /
• pp.600-602
• /
• 1996

The purpose of this paper is to develop a new maximum power point tracking(MPPT) using fuzzy set theory for air conditioning system. Fuzzy algorithm based on linguistic rules describing the operator's control strategy is applied to control step-up chopper for MPPT. Fuzzy algorithm is applied to control boost MPPT converter by temperature compensation effect with 8 bit single chip 8051 microcontroller. In this paper, temperature compensation(Becom Transducer : pf-T type) range is $-40^{\circ}C{\sim}+100^{\circ}C$.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 2005년도 ICCAS
• /
• pp.449-452
• /
• 2005

For home networking system with a function of air quality monitoring, a wireless sensor module with several air quality monitoring sensors was developed for indoor environment monitoring system in home networking. The module has various enlargements for various kinds of sensors such as humidity sensor, temperature sensor, CO2 sensor, flying dust sensor, and etc. The developed wireless module is very convenient to be installed on the wall of a room or office, and the sensors in the module can be easily replaced due to well designed module structure and RF connection method. To reduce the system cost, only one RF transmission block was used for sensors' signal transmission to 8051 microcontroller board in time sharing method. In this home networking system, various indoor environmental parameters could be monitored in real time from RF wireless sensor module. Indoor vision was transferred to client PC or PDA from surveillance camera installed indoor or desired site. Web server using Oracle DB was used for saving the visions by web-camera and various data from wireless sensor module.