VHDL을 이용한 16비트 마이크로 프로세서의 FPGA 구현 및 시험

박용팔,김경한,박홍준 대한전자공학회 1995 대한전자공학회 학술대회 Vol.1995 No.1

위치기반의 간이형 해양파고 관측 시스템 연구

박상현,박용팔,배동진,김진술,박종수 한국지식정보기술학회 2018 한국지식정보기술학회 논문지 Vol.13 No.6

In this paper, we propose a location-based simplified oceanographic surveying system. The simplified oceanographic observation system consists of a device for observing the ocean wave and a monitoring server for storing information based location. The simplified type of ocean wave surveying equipment is a small type, and it can be easily installed and deployed on ships and light buoys. Ocean wave observation equipment consists of a data logger, acceleration sensor, GPS and WCDMA module. The oceanic wave observation equipment operates at low power and physically cuts off power by using RTC when not observing. The power supply uses an external power source and can be used by attaching it to a ship or light buoy which is capable of using power at sea. The simple marine digger uses GPS to provide the ability to notify the date, time, and location to registered contact when a ship or light buoy is missing. We can also use a smartphone-based application to map the location of simplified marine peat observation devices. Therefore, it is possible to visit the equipment more quickly when leaving. Generally, large equipment, such as coastal wave buoy and weather buoy is mainly used to measure the crest, but the simple type ocean wave height observation equipment developed by us is small and can be easily installed in desired places. It is the most important factor in oceanographic observation and is proved through experiments that it is possible to measure the accurate wave height with the small type observation equipment developed in this paper. In addition, we can collect location information, wave-height and weather information, and corresponding dates through location based monitoring server.

모바일 데이터 리플리케이션 아키텍쳐 설계

김종완,박용팔,류성열 崇實大學校 生産技術硏究所 2001 論文集 Vol.31 No.-

The database to save and manage for data, in distributed system, very difficult to maintain consistency by lack of stability, access of multi-user. The distributed database has used in client/server system by connected with wired LAN. But we will be used distributed database in Mobile System, like PDA(Personal Digidal Assistant). Specially, The Mobile System has some limitations to connect and link of databases or networks. Then any method will be required for database management different from wired LAN's to maintain. This thesis will consider already LAN based distributed data replication and suggests a extended Data Replication Method for mobile system and Architecture. The case study shows that positive results we developed data replication for Mobile MIS(Medical Information System) with Company A.

주택의 신축과 해체시 건설폐기물의 발생종류와 처리방법 비교ㆍ분석에 관한 연구

홍원화,박용팔,최미영 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2

The housing construction has been quickly changed by construction of apartments since 1960. An obsoleted apartment house has been increased by political measures with quantitative enlargement of housing supply. The redevelopment and reconstruction of housing have been activated as an alternative plan. The redevelopment and reconstruction for existing buildings increases in construction wastes, which is influencing on both management and disposal of construction wastes, besides the quantitative augmentation of construction wastes have an effect on both society and environment. Therefore the management and disposal system of construction wastes is demanded from a side of the both society and environment. The purpose of this study offers basic data to compare and analyze both the kinds of construction wastes and the ways of disposal of these wastes generated when founding and dismantling residential buildings.

칼만 필터 기반의 스마트 해양기상관측 파고 시스템 연구

박상현,박용팔,김희진,김진술,박종수 한국디지털콘텐츠학회 2017 한국디지털콘텐츠학회논문지 Vol.18 No.7

본 논문에서는 개발 분야가 취약한 해양관련 기상기후와 파고를 실시간으로 측정할 수 있는 스마트 해양기상관측 파고 시스템을 제안하고자 한다. 현재 국내에서는 해양파고 측정 장치가 없으며 대부분 수입하여 사용하고 있다. 대부분 수입 제품은 긴 시간 동안 측정이 불가능 하고 실시간으로 데이터를 전송하지 못하는 단점을 가지고 있다. 따라서 본 논문의 스마트 해양기상관측 파고 시스템은 데이터로거 방식으로 실시간 해양기상을 관측하고 기존의 데이터로거가 가지고 있는 기능과 해양에서 사용할 수 있는 다양한 센서들을 동시에 적용하여 사용할 수 있다. 해양파고 측정은 칼만 필터 알고리즘을 적용하였고 실시간 파고를 측정할 때 발생되는 노이즈와 정확도를 높였다. 본 논문에서는 검교정 장치와 실제 해양 테스트를 통하여 알고리즘을 적용하였을 때와 적용하지 않았을 때를 실험하였고 실험을 통하여 결과를 도출하였다. 개발된 시스템은 해양에서 사용되는 시스템으로 충전이 가능한 리튬 인산철 배터리를 개발하였고 최적의 사용을 위하여 RTC 기반의 타이머를 이용하여 소비 전력을 최소화 하였다. 본 논문에서는 측정 주기에 따른 실험을 통하여 최적의 배터리 사용과 측정값을 도출하였다. We propose a smart ocean meteorological observation system which is capable of real-time measurement of vulnerable marine climate and oceanographic conditions. Besides, imported products have several disadvantages such that they can’t be measured for a long time and can’t transmit data in real time. In the proposed system, smart ocean observation digging system, it observes real-time ocean weather with data logger methods. Furthermore, we also use existing dataloggers functions with various sensors which are available in the ocean at the same time. Also, we applied the Kalman-filter algorithm to the ocean crest measurement to reduce the noise and increase the accuracy of the real-time wave height measurement. In the experiment, we experimented the proposed system with our proposed algorithms through calibration devices in the real ocean environment. Then we compared the proposed system with and without the algorithms. As a result, the system developed with a lithium iron phosphate battery that can be charged by a system used in the ocean and minimized power consumption by using an RTC based timer for optimal use. Besides, we obtained optimal battery usage and measured values through experiments based on the measurement cycle.

서보 모터 기반의 해양파고 및 파향 검교정 시스템 연구

박상현,박종수,배동진,김진술,박용팔 한국지식정보기술학회 2018 한국지식정보기술학회 논문지 Vol.13 No.6

In this paper, we propose a servo-motor-based system for verifying and calibrating a device for measuring the height and direction of ocean wave. Internationally, there are many devices that measure the height and direction of ocean wave, but there is no standard data and verification device. Generally, companies develop wave measurement equipment in their manufacture, but we do not know how they produce their products. In this paper, we try to calibrate the measurement devices using two servo-motors for the wave and divergence of various devices. Each servomotor controls the wave height and the wave direction. The wave can be calibrated up to 2m and the wave direction can be calibrated in 360° direction. Besides, we develop a separate monitoring device for the calibration process which can compare and analyze the waveform in real time. Consequently, we carry out a comparative analysis experiment between the waveguide measuring device and the calibrating device. Subsequently, the accuracy of the device is confirmed by comparing and analyzing the result graph value of the comparative analyzing device. Direction is the element to confirm the direction of wave. It does not measure speed and height, but it compares and analyzes the direction values between 0°~360° direction. In addition, the verification process is conducted using the results of comparative analysis. Our calibration device can produce long-waves and short-waves of ocean wave height. Our calibrator has been designed to calibrate up to 40Kg of equipment. In South Korea, each company has its ocean wave height and calibrating device, but they can not reproduce long-wave and shortwave. Furthermore, our calibrating device can be applied to ocean wave research and various fields.

실시간 해양관측을 위한 표준형 등부표용 시스템 연구

박상현(Sanghyun Park),박용팔(Yongpal Park),배동진(Dongjin Bae),김진술(Jinsul Kim),박종수(Jongsu Park) 한국디지털콘텐츠학회 2018 한국디지털콘텐츠학회논문지 Vol.19 No.9

해양 기상 관측을 위한 스마트 데이터 로거 시스템 연구

박상현(Sanghyun Park),박용팔(Yongpal Park),박종수(Jongsu Park) 한국정보기술학회 2017 Proceedings of KIIT Conference Vol.2017 No.12

3축 모터 기반의 파고 시뮬레이션 및 검교정 시스템 연구

박상현,박종수,배동진,김진술,박용팔 한국지식정보기술학회 2017 한국지식정보기술학회 논문지 Vol.12 No.6

We propose a calibration system for ocean wave simulation that can accurately measure oceanic waves. There are calibrating devices that measure the height of various waves in overseas, but we recognized that no standard model had been not formed yet. Besides, existing systems cannot calibrate various ocean waves and can only measure ocean wave height. Therefore, it is not possible to verify that the current ocean wave measuring device is measuring the correct data. To solve this problem, we propose a system that can measure ocean wave by simulating and calibrating. The system uses three motors to achieve wave height and direction. Besides, we can also implement various waves using our developed software. To do that, we first analyze the types of waves that occur in the ocean and can reproduce them in the experiment. We measured the height of the waves that can be compared and analyzed and verified through experiments that the data are similar. We can also confirm that a similar oceanography is drawn using the output data. Our system includes a calibration function that allows the instrument to measure wavelength with accurate data. Ocean wave measurement equipment provides a variety of simulation functions to measure ocean waves. Our system is the first product in Korea, and we hope to use this system for ocean wave investigation and various fields.

PDA 프로그래밍을 위한 개발 프로세스에 관한 연구

이향숙(Hyang-Sook Lee),김종완(Jong Wan Kim),오기욱(Ki Uk Oh),박용팔(Young Pal Park),류성열(Sung Yull Rhew) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅰ

프로젝트를 수행할 때 고객이 원하는 소프트웨어를 고객이 원하는 시간에 인도하는 것은 중요하다. 개발 기간의 엄수가 중요요소로서 각광을 받는 이유는 개발 기간의 엄수가 프로젝트의 성패를 좌우하기 때문이다. Extreme Programming 은 개발 주기의 단위를 작게 나누어 소프트웨어를 단기간에 개발하기 위한 방법론으로 현재 PDA 개발에 Pair Programming이라는 기법으로 자리 잡아가고 있다. 본 논문에서는 PDA 프로그램을 고객인 원하는 품질로 단 기간에 개발하여 프로젝트의 성패에 중요 요소로 자리 잡고 있는 개발 기간 엄수를 지킴으로써 PDA 개발 환경에 효과적으로 적용할 수 있는 PDA 프로그래밍을 위한 개발 프로세스를 제시하고자 한다.