NMR Line의 Motional Narrowing Process에 관한 연구

송인찬 서울大學校 1988 국내석사

SRD의 비선형 해석법을 적용한 B-WLL 대역 주파수 합성기의 설계

송인찬 서강대학교 대학원 2001 국내석사

본 논문에서는 낮은 위상 잡음을 갖는 B-WLL대역 국부발진기(LO)로 사용될 주파수 합성기를 설계 및 제작하였다. 2GHz 대역의 주파수 합성기를 구성, 낮은 위상잡음의 안정된 파형을 얻은 후 SRD(Step Recovery Diode)를 이용한 주파수 체배기를 거쳐 12GHz 대역의 신호를 발생시키고 다시 주파수 2체배기를 통하여 B-WLL TX 및 RX LO용 주파수인 25GHz 대역의 위상 고정된 안정한 신호를 얻었다. 위상잡음의 개선을 위하여 TX와 RX 대역의 LO를 분리하여 제작하였으며 제작된 주파수 합성기는 TX대역일 경우 각각 출력 주파수 24.92GHz, 25.10GHz, 25.26GHz를 가지며, RX일 경우는 24.54GHz, 24.90GHz, 25.2GHz의 출력 주파수를 갖는다. 이중 TX 대역 출력 주파수 24.92GHz에서 0.44dBm의 발진출력과 -87.93dBc/Hz(@10KHz), -109.54dBc/Hz(@100KHz)의 위상잡음 특성을 나타내며 RX 대역 출력 주파수 24.54GHz에서 0.53dBm의 발진출력과 -84.05dBc/Hz(@10KHz), -107.46dBc/Hz(@100KHz)의 위상잡음 특성을 나타내었다. In this thesis, a low phase noise frequency synthesizers which can be applied as local oscillators in B-WLL RF tranceivers are presented. The phase-locked synthesizers for B-WLL LOs are composed of 2GHz baseband frequency synthesizer, harmonic frequency multiplier and frequency doubler at 12GHz. Two frequency synthesizers are designed, one of which covers B-WLL TX frequency range and the other covers RX frequency range. For the 3 different operators, frequency synthesizers are set at 24.92GHz, 25.10GHz and 25.2GHz for the TX band and set at 24.54GHz, 24.90GHz and 25.10GHz for the RX band. The TX band frequency synthesizer has 0.44dBm output power and shows -87.93dBc/Hz(@10KHz), -109.54dBc/Hz (@100KHz) phase noise characteristics at 24.92GHz frequency and the RX one has 0.53dBm output power and shows -84.05dBc/Hz (@10KHz), -107.46dBc/Hz (@100KHz) phase noise characteristics at 24.54GHz frequency.

USN (Ubiquitous Sensor Network) 응용을 위한 수동형 RFID 기반의 효율적인 태그 충돌방지 알고리즘 및 능동형 RFID 기반의 Multi-hop Relay 시스템

송인찬 인하대학교 정보통신대학원 2009 국내석사

RFID (Radio Frequency Identification) 시스템은 Interrogator로 알려진 리더와 Label 로 알려진 태그로 구성된 비 접촉 자동 인식 시스템이다. 최근 이 RFID시스템은 유통 및 물류 산업에서 바코드의 대안으로 주목 받고 있다. 그 이유는 RIFD 시스템은 비 접촉 기술을 사용함으로써 먼 거리에서 태그의 인식이 가능하고, 바코드 보다 더 많은 데이터를 RFID 태그에 저장 할 수 있기 때문이다. 하지만 이러한 장점에도 불구하고, RFID 시스템은 데이터의 명확성 및 느린 RFID 표준화 진행이라는 문제점을 안고 있다. 또한 RFID 시스템에서 가장 큰 단점은 태그 주위의 많은 방해물과 태그간의 태그 충돌로 인해 발생하는 낮은 태그 인식 효율을 들 수 있다. 본 논문에서는 이러한 낮은 태그 인식 효율 문제를 해결하기 위하여 수동형 RFID 기반의 태그 충돌방지 알고리즘과 능동형 RFID 기반의 Multi-hop Relay 시스템에 대하여 살펴보고, 태그 충돌방지 알고리즘의 태그인식시간, 충돌 비율을 감소시키고, 데이터 처리량 및 시스템 효율을 증가 시키기 위하여 Chebyshev’s Inequality 를 이용한 CHI 알고리즘과 QueryAdjust 명령어를 사용한 FAFQ (Fixed Adjustable Framed Q) 알고리즘 및 AAFQ (Adaptive Adjustable Framed Q) 알고리즘을 제안한다. 또한, 태그 인식률과 태그 인식거리를 증가 시키기 위하여 Multi-hop Relay 시스템의 Frame Structure를 제안한다. 본 논문에서 제안한 알고리즘 적용 시, 기존 알고리즘에 비하여 수동형 RFID 기반의 태그 충돌방지 알고리즘의 효율 및 능동형 RFID 기반의 태그 인식거리 향상을 모의실험을 통하여 확인한다. RFID (Radio frequency identification) system is a contactless automatic identification system, which comprises readers, also known as interrogators, and tags, also known as labels. Recently RFID attracts attention as an alternative to the bar code in the distribution industry, supply chain and banking sector. This is because RFID system that has advantages of contact-less type and can hold more data than the bar code. Nevertheless, RFID has disadvantages about the problem of identified data clearness, the slow progress of RFID standardization and so on. One of the largest disadvantages in RFID system is its low tag identification efficiency by tag collision and by many obstacles around tags. In this thesis, we analyze the passive RFID-based tag anti-collision algorithm and active RFID-based multi-hop relay system to solve low tag identification efficiency. To increase throughput and system efficiency, and to decrease tag identification time and collision ratio of tag anti-collision algorithm, we propose enhanced tag anti-collision algorithms, which are CHI (Chebyshev's Inequality) algorithm, by using Chebyshev's Inequality, FAFQ (fixed adjustable framed Q) algorithm and AAFQ (adaptive adjustable framed Q) algorithm, by using QueryAdjust command. We also propose frame structure for multi-hop relay system to improve the tag identification rate and the tag coverage area. When a proposed algorithm is applied to RFID system in this thesis, we confirm that it performs better than conventional algorithms through computer simulation.

저압 모터제어반의 모듈형 분산제어시스템 설계

송인찬 충북대학교 산업대학원 2016 국내석사

Low-voltage Motor Control Center(MCC) to protect and control low-voltage motor of the factory in the power system is one of the most essential fields in the industrial facilities. It is recently the trend is being applied to miniaturization and multifunction technology. Also, to compensate shortcomings of the motor system, including monitoring, control and protection in a single integrated and centralized system, Distributed Control System(DCS) is required to be divided as several of the centralized system with separate the function into one centralized system. This compose the whole system to throughout the communications network by connecting a centralized system of each. Thus, in this study, low-voltage MCC produced wiring cost savings, reduced working time and to drastically reduce the costs to make a control panel, also, in order to use communication networks to enable to take control and monitoring of the motor remotely, by using I/O device built-in communication module and power module in general low-voltage MCC, suggesting application technology for the provision of the modular DCS of the low-voltage MCC. To present the application technology, the actually used to produce a housing according to a schematic diagram of a system was proved the effect on approximately 50% cost savings and two times increase of productivity. In addition, creating a table for the selected main unit by outputting the motor rating, users were easier access to these systems. 전력계통에서 일반 공장의 저압 모터를 보호, 제어하는 시스템인 저압모터 제어반은 산업설비 중에서 가장 핵심적인 부분 중에 하나로 최근에 요구되어 지는 소형화 및 다기능화에 적합하게 기술이 전환되고 있는 추세이며, 또한 모터의 감시, 제어, 보호 등을 하나로 집중화하여 관리하는 시스템의 단점인 높은 제작비용과 모터 적용 용량의 한계를 보완하기 위해서, 하나의 중앙처리 장치를 기능별로 분리하여 여러 개의 작은 중앙장치로 세분하고 각각의 시스템을 통신으로 네트워크를 연결하여 전체 시스템을 구성하는 분산제어시스템이 요구되고 있다. 따라서, 본 연구에서는 저압 모터제어반 제작시 배선비용 절감, 작업시간 단축 및 외함 비용을 대폭 절감하고, 상위 감시반에서 네트워크를 활용하여 원격으로 모터의 제어 및 모니터링이 가능하도록 하기 위해, 기존의 일반적인 저압 모터제어반에 I/O Device 내장형 통신 모듈과 파워모듈을 사용 함으로서, 저압모터제어반의 모듈형 분산제어시스템 제공을 위한 제어 방식을 제시하였다.

韓國의 北方政策 推進方向에 대한 分析 및 評價

송인찬 慶熙大學校 1992 국내석사

묵주기도 중 ‘빛의 신비’에 관한 고찰 : ‘빛의 신비’에 나타난 예수 그리스도의 공생활을 중심으로

송인찬 대전가톨릭대학교 대학원 2005 국내석사

In the Roman Catholic Church, very cherished and one of the old traditional prayer, is the Rosary Prayer. It is a superb contemplative prayer that connects to Christ through Virgin Mary. The Rosary is a prayer that have 'Evangelical characters' as it includes the mysteries from Virgin Mary's conception to Christ's life. It also includes the 'Paschal Fruition' of Christ that was achieved through Mary. Thus, those Christian families who prays the Rosary can not only derive abundant graces through the intercession of Mary but also can approach to Jesus Christ who is a fundamental goal of our faith. But for many Christians, who pray the Rosary have a strong tendency of just repeating the words habitually without really trying to understand the profound, plentiful meaning and values of the prayer. This is especially seen in the new mystery, 'the Mysteries of Light' which Pope John Paul Ⅱ has introduced recently. Therefore, I want to emboss the authentic value and importance of the Rosary. I also want to offer fundamental assistance of how the Rosary can be prayed in its more valuable way. Furthermore, I want to explain 'the Mysteries of Light', the main mystery of Christ's public ministry. In the first chapter, the subject 'A religious meaning of light', I saw that the subject of the 'light' was applied to God and Jesus especially in the Old Testament and the New Testament. Here however, I'd like to give a brief introduction of what Father in church said about the 'Light', which is an important matter for Catholics an their liturgy itself. In the second chapter, 'The Rosary's finding mentioned in John Paul Ⅱ's bull, Virgin Mary's Rosary(Rosarium Virginis Mariae)', I explained the general consideration of the Rosary. I also investigated the origin and historical development of the Rosary and the pontifical instructions about the prayer. It also includes about the intention and the consequence of its own. Moreover, it talks about the essence of the Rosary when it is prayed with deep contemplation and profound meaning. So the essence of the Rosary for those who really and seriously pray it are: 'Learning Christ from Mary', 'Being conformed to Christ with Mary', 'Praying to Christ with Mary', 'Proclaiming Christ with Mary'. And finally, in the third chapter, I suggest what ' The Mysteries of Light' really mean and what one should meditate upon when we pray the bundles of the mysterer of light. This mystery is about Christ's proclamation of the Kingdom of God during His public ministry, as found in the Gospel. It has the following five mysteries: 1. His Baptism in Jordan-River. 2. His self-manifestation at the wedding of Cana. 3. His proclamation of the kingdom of God (with his call to conversion). 4. His transfiguration, and finally 5. His institution of the 'Holy Eucharist', as the sacramental expression of the Paschal Mystery. I wanted to reveal that Christ is the 'truthful light' in the world and redeems all mankind who are wondering in the dark. By understanding all these things, one will be able to know that the Rosary is a great prayer, which has the capacity to lead one to know Christ deeply. Moreover, in the Rosary we are able to realize, how Mary, all through Her life concentrated on listening to 'The Father', 'The Son', and 'The Holy Spirit'. Also, we are able to confirm the truth that we are called to a more profound and lofty dimensional of Christian perfection by honoring Mary, who lived Her life for Christ. "Christ is the truthful light that brighten the dark world."