방범·방재 기능을 갖는 에너지 절약형 조명기기 구현

한영오,Han, Young-Oh 한국전자통신학회 2010 한국전자통신학회 논문지 Vol.5 No.3

본 연구에서는 방범방재 기능을 갖는 에너지 절약형 조명기기를 개발하였다. 개발된 조명기기와 관리실을 지그비 무선통신으로 연결하여 조명기기에서 획득된 정보를 전송할 수 있어 편리하게 모니터링이 가능하다. 본 조명기기를 교실 또는 사무실 내부에 여러 개의 일반 형광등과 병행하여 1개만 설치하면 학교 또는 일반 건물을 위한 저비용 방범방재 및 에너지절약형 무선 네트워크 시스템 구축이 가능하다. In this paper, the energy saving illuminator with a function of crime and fire prevention is developed. This illuminator is communicated with a superintendent's office by wireless communication and the informations being archived by the illuminator are transmitted to a superintendent's office. If this illuminator is established with only one in a lecture room or a office room, a wireless network with saving a energy and preventing crimes and fires can be constructed.

혈중산소포화도/맥파 신호 측정 및 무선 전송을 위한 모듈 개발

한영오,Han, Young-Oh 한국전자통신학회 2011 한국전자통신학회 논문지 Vol.6 No.6

본 논문에서는 인체의 혈중산소포화도(SpO2) 및 맥파 신호를 측정하기 위한 모듈과 PC에 무선으로 전송할수 있는 통신모듈을 개발하였다. 또한 응급이송 시 전송된 혈중산소포화도 및 맥파 신호를 의료진에게 정보 손실 없이 다양한 형태의 데이터 및 그래프로 제공할 수 있도록 하는 디스플레이 프로그램을 개발하였다. 이러한 시스템은 원격의료에 적합하게 활용될 수 있으며, 의료법의 개정과 더불어 새로운 시장을 창출할 수 있을 것으로 기대된다. In this paper, the module for measuring SpO2 and PPG(Photo Plethysmo Graphy) signal of human body and the module for wireless communication of these bio-signals to PC were developed. The program was developed to display transmitted SpO2 and PPG signal by various type data and graph without information loss during a emergency transfer. This system can be utilized as appropriate for remote medical care and a new market is expected, to be created according to revision of medical law.

PC기반 Strip 중앙 위치 제어시스템의 구현

한영오 남서울대학교 1996 남서울대학교 논문집 Vol.2 No.-

The existing CPC(Center Position Controller) has unstably performed because of dusts on reflection panel, CCD protector contamination due to high temperature in furnace or other parameters. The reason is that the existing CPC has a Z80 processor as a CPU and only performs low level image processing as a simple edge detector. So the improvement of control system through the development of robust edge detection algorithm overcoming changes of measuring environment is so needed. For this, in this study we carefully analyze the image of the strip rolled in occasion that measuring environment is changing, develope the optimal edge detection algorithm to solve the problems, generate the control signal suitable for the existing CPC (Center Position Controller), and propose the capability of application to the actual environment.

심장 전기도 시스템을 위한 주변 장치 모델링

한영오 남서울대학교 2010 남서울대학교 논문집 Vol.16 No.1-1

The computerized cardiac analysis system, which acquires and analyzes the electrical activation signal propagating along the surface of the heart, is indispensible equipment for the open heart surgery and electrical cardiac functional study. The electrode sticking condition of being contacted with a body decisively effects the accuracy of cardiac activation signals detected from a body. In this paper, the electrode sticking test circuits are developed for improving the accuracy of cardiac activation signals detected from a body. Key Words : cardiac activation system, impedance check circuit, peripheral device modeling

다중 센서를 이용한 움직임 감지기 개발

한영오,Han, Young-Oh 한국컴퓨터산업학회 2009 컴퓨터産業敎育學會論文誌 Vol.10 No.5

본 논문에서는 적외선 센서와 초음파 센서를 사용하여 넓은 범위의 움직임 감지뿐만 아니라 미세 한 움직임을 감지를 할 수 있는 다중 센서를 내장한 움직임 감지기를 개발하였다. 개발된 움직임 감지기를 전등과 연계시켜 강의실, 사무실 등 넓은 공간에서 사용하면 전기 에너지를 절약할 수 있다. In this paper, the device multi-sensing of moving body was developed for sensing of moving body in a wide range and minute moving body. If the device multi-sensing of moving body is connected with electric lamps, it will be able to economize a electric energy in lecture rooms or office rooms.

3차원 심장전기도 매핑 시스템을 위한 소프트웨어 개발

한영오 남서울대학교 2001 남서울대학교 논문집 Vol.7 No.-

The ability to map and ablate the sometimes fleeting automatic atrial tachycardia is greatly enhanced by computerized mapping systems. In this study, we have developed 128 channel computerized data analysis system using microcomputer for basic research of electrophysiology and electrical propagation. The bipolar electrogram information is acquired from 128 cardiac sites simultaneously at a sampling rate of 1 ksampls/sec with continuous and total data storage of up to 30 seconds. When the reference electrogram is selected and reference point is picked up, delay time from the reference point is displayed on three dimensional diagram of the heart. System design permits easy expansion to almost 256 simul-taneous sites. this system is expected to enable us to study pathophysiology of cardiac arrhythmia and to improve the result of diagnosis and surgical treatment for cardiac arrhythmia

심장전기도 시스템에서 직류옵셋 제거를 위한 기저선 보정회로 설계

한영오 남서울대학교 2002 남서울대학교 논문집 Vol.8 No.-

The computerized cardiac analysis system, which acquires and analyzes the electrical activation signal propagating along the surface of the heart, is indispensible equipment for the open heart surgery and electrical cardiac functional study. The 128 channel cardiac activation amplifier under the electrosurgical unit is disordered because of DC offset and saturation in differencial amplifier. In this paper, the base-line compensation circuit for removing DC offset in cardiac-activation system is designed.

64 채널 심장전기도 전치 증폭기의 설계

한영오 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.2

The computerized cardiac analysis system, which acquires and analyzes the electrical activation signal propagating along the surface of the heart, is indispensible equipment for the open heart surgery and electrical cardiac functional study. In this paper, the design requirement and the electrical circuit analysis are performed to construct the multi-channel cardiac activation pre-amplifier necessary for a signal conditioning circuit. The general 32 channel configuration is expanded into 64 channels to enhance the spatial resolution on the mapped surface of the heart. The 64 channels pre-amplifier consists of input circuit, differential amplifier, right leg driven circuit and isolation part. It has distinct features; high voltage protection, leakage current limitation, isolation and the maximization of common mode rejection ratio with respect to the half-cell potential difference due to different electrode materials.

ZigBee 통신 및 다중센서를 이용한 방범.방재 시스템 개발

한영오,Han, Young-Oh 한국컴퓨터산업학회 2009 컴퓨터産業敎育學會論文誌 Vol.10 No.5

본 논문에서는 IEEE 802.15.4 무선통신 표준으로 개발된 ZigBee 모듈과 다중센서를 이용하여 방범 방재 상황을 무선으로 Display하는 시스템을 구현하였다. 방범 시스템은 초음파, 적외선 센서를 이용하여 감지 시스템을 구현하였고, 메인칩으로는 PIC16F73을 사용하였다. 전등을 연결, 자동 전등 ON/OFF를 구현하였다. 방재 시스템은 온도센서를 이용하여 구현하였다. ATmega64를 사용한 무선통신모듈인 ZigBee 시스템과 다중센서를 연동하여 방범, 방재 시스템을 구현하여 감지된 데이터를 EndDevice에서 Coordinator로 전송하여 Coordinator에서 전송 받은 데이터를 PC에 Display 할 수 있도록 구현하였다. In this paper, the raid and fire preventable system using Zibee module with IEEE 802.15.4 wireless communication standard and multi-sensor was developed displaying raid and firing condition with wireless network. The raid preventable system is designed using a ultrasonhe waves sensor and infrared sensor. The fire preventable system is designed using a thermistor. The datas for raid and firing condition are communicated from enddevice to coordinator with wireless network and are displayed on PC monitor.

심장전기도 주 증폭기를 위한 가변 저역통과 필터 설계

한영오 남서울대학교 2005 남서울대학교 논문집 Vol.11 No.2

The computerized cardiac analysis system, which acquires and analyzes the electrical activation signal propagating along the surface of the heart, is indispensible equipment for the open heart surgery and electrical cardiac functional study. The design requirement and the electrical circuit analysis are performed to construct the multi-channel cardiac activation main-amplifier necessary for a signal conditioning circuit. The various noises in Cardiac-Activation Main-Amplifier must be filtered before entering A/D converter. In this paper, Low pass filter is designed with a variable cut-off frequency for a clinical environment.