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${\mu}C/OS-II$를 적용한 차량용 제어시스템의 설계에 관한 연구
송영호,이태양,박원용,문찬우,안현식,정구민,Song, Young-Ho,Lee, Tae-Yang,Park, Won-Yong,Moon, Chan-Woo,Ahn, Hyun-Sik,Jeong, Gu-Min 한국융합신호처리학회 2009 융합신호처리학회 논문지 (JISPS) Vol.10 No.3
In this paper, we study on design of vehicle control system which is based on ${\mu}C/OS-II$, We component a electric motor drive system for simulator because the most of vehicle part use electric motor for actuator. We use the XC2287 microcontroller which is often used vehicle body controller because XC2287 guarantee high confidence and durability in vehicle industry. The electric motor control system derive PWM from general I/O port in XC2287 microcontroller. The signal is supplied at electric motor after amplifying that using driver circuit. The user control duty of PWM signal through controlling potentiometer which is connected to XC2287. through that, the user control speed of electric motor. we synchronize both input process via controlling potentiometer and PWM output process using semaphore. we verify porting of ${\mu}C/OS-II$ via experimentation. 본 논문에서는 신뢰도와 내구성이 보장되어 차량용 바디 제어기에 많이 사용되는 16bit 마이크로 컨트롤러인 XC2287에 ${\mu}C/OS-II$를 이식하고 차량의 전자제어 액츄에이터롤 많이 사용되는 모터로 시스템을 구성하여 실시간 운영체제 기반의 모터구동시스템을 구현한다. 구현한 실시간 모터구동시스템은 XC2287 마이크로 컨트롤러의 범용입출력 포트로부터 펄스폭 변조 신호를 출력하고 드라이버 회로를 통해 증폭된 신호가 DC모터에 인가된다. 사용자는 XC2287에 장착된 전위차계를 조작하여, 포트로부터 출력되는 펄스폭을 조절하고, 이를 통해 DC모터의 속도를 제어하고 출력된 신호를 모니터링 한다. 전위차계 조작에 의한 입력과정과 펄스폭 변조 신호 출력과정을 세마포어를 이용하여 동기화하는 실험을 통하여 ${\mu}C/OS-II$ 이 올바르게 이식되었는지를 검증한다.
에나멜코팅된 구리코일로 부터의 친환경적(親環境的) 구리선의 분리(分離)
송영호,김정민,박준식,공만식,이선영,Song, Yong-Ho,Kim, Jeong-Min,Park, Joon-Sik,Kong, Man-Sik,Lee, Caroline Seun-Young 한국자원리싸이클링학회 2012 資源 리싸이클링 Vol.21 No.3
최근 친환경적이며 고효율적인 폐동선의 재활용을 위하여 다양한 방안이 모색되고 있는 실정이다. 본 연구에서는 폐동선의 고주파 유도가열을 이용하여 폐동선의 피복제거의 실험을 수행하여 폐동선의 친환경적이며 고효율의 재활용방안을 모색하고자 다양한 공정조건하에 최적화된 방안을 도출하였다. FT-IR 분석결과, 폐동선에 코팅된 물질은 polyester임이 나타났으며, 와전류의 전산모사결과, 최적화 과정을 도출하고 이에 대하여 논의하였다. 폐동선의 피복을 효과적으로 단시간에 분리하기 위하여 폐동선을 고주파 유도코일에 수직으로 장입하고 $950^{\circ}C$이상의 온도에서 유지해야 함을 알 수 있다. Recently, the recycling with environmentally friendly method has been an issue for various fields. An effective removal method of coating layers from coated copper wires is one critical factor for recycling copper wire. We have adopted a high frequency heating routine for removing the coating layers on the coated copper wires, and attempted to find optimum conditions. The experimental results show that the copper wires should be maintained at or above $950^{\circ}C$ for rapid removal of the polyester. The simulation and experimental results are discussed with respect to the microstrucrual evolution during heating of the copper wires.
정보보호 : 하둡 상에서 ARIA 알고리즘을 이용한 HDFS 데이터 암호화 기법의 설계 및 구현
송영호 ( Youngho Song ),신영성 ( Youngsung Shin ),장재우 ( Jae Woo Chang ) 한국정보처리학회 2016 정보처리학회논문지. 컴퓨터 및 통신시스템 Vol.5 No.2
최근 소셜 네트워크 서비스(SNS)의 발전으로 빅데이터가 출현하였고, 이를 분석하기 위한 분산 병렬 플랫폼으로 하둡이 개발되었다. 하둡을 사용하는 기업은 개인적인 정보가 포함된 데이터를 분석하여 마케팅 등에 활용하고 있다. 이에 따라, 하둡에 저장된 센서티브(sensitive) 데이터의 유출을 방지하기 위한 데이터 암호화 연구가 수행되었다. 하지만 기존 데이터 암호화에 대한 연구는 국외 표준인AES 암호화 알고리즘만을 지원하는 한계점이 존재한다. 한편 정부에서는 데이터 암호화 알고리즘으로 ARIA 알고리즘을 국내 표준으로 지정하였다. 본 논문에서는 하둡 상에서 ARIA 알고리즘을 이용한 HDFS 데이터 암호화 기법을 제안하였다. 첫째, 제안하는 암호화 기법은 하둡의 분산 컴퓨팅 환경에서 ARIA 암호화 및 복호화를 수행하는 HDFS 블록 분할 컴포넌트를 제공한다. 둘째, 제안하는 암호화 기법은 데이터의 마지막 블록이 128비트 단위의 데이터가 아닐 경우, 더미(dummy) 데이터를 추가하여 암호화 및 복호화를 수행하는 가변길이 데이터 처리 컴포넌트를 제공한다. 마지막으로 성능 평가를 통해, 제안하는 ARIA 기반 암호화 기법이 텍스트 문자열 처리 응용 및 과학 데이터 분석 응용에서 효과적으로 사용될 수 있음을 보였다. Due to the growth of social network systems (SNS), big data are realized and Hadoop was developed as a distributed platform for analyzing big data. Enterprises analyze data containing users’ sensitive information by using Hadoop and utilize them for marketing. Therefore, researches on data encryption have been done to protect the leakage of sensitive data stored in Hadoop. However, the existing researches support only the AES encryption algorithm, the international standard of data encryption. Meanwhile, Korean government choose ARIA algorithm as a standard data encryption one. In this paper, we propose a HDFS data encryption scheme using ARIA algorithms on Hadoop. First, the proposed scheme provide a HDFS block splitting component which performs ARIA encryption and decryption under the distributed computing environment of Hadoop. Second, the proposed scheme also provide a variable-length data processing component which performs encryption and decryption by adding dummy data, in case when the last block of data does not contains 128 bit data. Finally, we show from performance analysis that our proposed scheme can be effectively used for both text string processing applications and science data analysis applications.
송영호 ( Young Ho Song ) 경희대학교 인문학연구소 2009 인문학연구 Vol.16 No.-
This article aims to study images and Symbol-System depicted in Na tae-ju`s poems. The poet was born near at the mouth of Kum River and spent his childhood there. He began writing poems when he was sixteen years old as a freshman of a collage of education, and has devoted himself to writing lyric poems for over 48 years. He started his poetry career when his poem "In the Bamboo Forest" won a prize in Spring Literary Contest held by Seoul Newspaper in 1971. He released his first collection of poems "In the Bamboo Forest" in 1973, and the 28th collection of poems published in 2002 won a prize at the 7th Poetry and Poetics Contest. He continues to write poetry until now. This study explored his lyric poems in terms of images and their implications. As an effort to study the Korean poetry tradition transpired in his poems, the identity of Korean lyric poems was being searched for. Analyzing the lyric images and implications deeply included in his poems shows that natural implications and pastoral images come from his ideas as a poet. In this study, the implications in his poems were analyzed in terms of the type of imagination and the poetical awareness. The poetical awareness was analyzed into three characteristics. First, the gloomy view of one`s life is expressed as sorrow, obsession, and uneasiness. He described his life as a tragedy seen through such a gloomy view of life. Second, the sense of futility is a desperate awareness of his life, which makes him feel painful and often being resigned. The pain and resignation are sometimes exposed as the nihility of his life. Third, the desperate awareness is thought to include not only his despair of the reality and human existence but also the strong zeal for his life and recovery. His poems are characterized as the dialectical movement between despair and hope, or between positive and negative senses of existence. The result of my study shows that the purity of the poet with his pastoral imagination is based upon the sharp and delicate observation and insight into the lyric, pastoral, and human subjects. Most of all, the significance of Na tae-ju`s poems may lie in his intention, by regaining the life force of nature and the purity of human beings, to bring back humanity and the life force of nature to our society where humanity has been almost lost.