• 조명전기설비학회논문지
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• 제29권1호
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• pp.31-36
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• 2015

In this paper, an LED lighting system that is capable of automatic or maunal dimming control using a ultrasonic sensor and Bluetooth wireless communication technology is presented. The LED lighting system consists of a ultrasonic sensor, microcontroller unit, Bluetooth wireless communication, LED driver, and LED light source. By using the implemented LED lighting system sample, it is shown that the automatic and manual dimming control is realized. By using the ultrasonic sensor, the LED lighting is automatically brighter or dimmer depending on the distance between the sensor and an object. When using a smartphone that includes Bluetooth wireless communication function, one can not only manually control the brightness of the LED lighting from level 1 to 10, but also monitor the distance between the sensor and object on the smartphone.

• 한국전자통신학회논문지
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• 제12권5호
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• pp.829-836
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• 2017

본 논문은 새로운 구조의 AMR(원격검침)/AMI(첨단계량인프라)를 시스템 개발에 관한 연구이다. 개발된 시스템은 기존시스템 보다 가격이 저렴하고, 검침 시간이 단축되고, 설치가 용이하다. 개발된 시스템을 적용하면 한국의 일반 가정에서 기본으로 사용하고 있는 전기, 수도, 가스, 온수 및 난방의 5종 계량기의 계량값을 원격검침 하고 이에 대한 AMI 적용이 가능하다. 제안된 시스템이 이론과 실제 적용에 있어서 경제성과 신뢰성 모두 우수함과, AMI 적용에 기존 시스템보다 더 적합함을 테스트 결과에 보여준다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 정기총회 및 추계학술대회 논문집
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• pp.2292-2299
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• 2011

The CBTC(Communication Based Train Control) system, a recent train control system, is a wireless communication based train control system that is operated in the moving block system control by tracking trains in real time. In additioin, the system helps to increase the volume of traffic by shortening driving headways through controlling moving block system control. Furthermore, driverless modes are performed by controlling ATP(Automatic Train Protection)/ATO(Automatic Train Operation). In this paper, controllable elements in ATO driverless train control system, affecting comfortable ride, will be analysed and applied to CBTC train control system that developed by POSCO ICT. Finally, the test results of improved comfortable ride will be showed by appling the developed system to the Gyeong-san light rail transit test track.

• 한국인터넷방송통신학회논문지
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• 제13권1호
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• pp.55-62
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• 2013

동판 생산량의 증가와 수요의 활성화로 더욱 동판에 대한 자동 검사 시스템이 필요하게 되었다. 본 연구에서는 동판의 3차원 표면형상 및 결함 검출을 하기 위한 3차원 영상 분석 시스템 및 GUI를 개발했다. 2차원 영상을 통해 분석을 할 수 있으나 오류가 많이 발생하기 쉽고, 작업자가 분석하기에는 무리가 따르기 때문에 3차원 영상으로 분석하여 살펴보고 자동으로 판정을 내리므로 작업자가 사용하기 쉽다. 동판 제작 공정에서 발생되는 검사 방법에서 사람에 의한 육안 검사가 주로 행해지고 있는데, 여기서 자동 검사를 통해 정확한 검사율과 비용 발생을 감소를 할 수 있다. 동판에 대한 결함을 정의하고, 동판 결함 검사 측정을 위한 시스템을 개발한다. 그리고 분석 알고리즘과 3차원 영상 분석 프로그램을 개발하여 동판에 결함을 자동 검출한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(5)
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• pp.103-106
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• 2002

This paper has studied a remote AMR(Automatic Meter Reading) system using the power line and the telephone line as a communication media and the digital power meter. In the developed system, because we have used the power line and telephone, the facility is very easy and then its cost is not expensive. The system includes following elements: a digital power meter, an indoor communication system using a power line modem and a telephone line interface system for sending data to the utility company.

• Journal of Pharmaceutical Investigation
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• 제23권2호
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• pp.97-102
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• 1993

Hospital pharmacy services are divided into dispensing affairs for inpatients and outpatients, pharmaceutical service, stock control, intravenous admixture service, drug information service, pharmacokinetic consultation service, education and research work, etc. But among those affairs, dispensing affair for outpatient is perceived as the most important work in Korea, because it is linked directly with hospital service for patients. Therefore, total computer system for dispensing area was adopted from opening point of hospital in 1989 in Asan Medical Center. Utilization of computer system for outpatient dispensing area is as follows; 1) Order communication system of prescription by Total Hospital Information System, 2) Automatic print-out system of direction for use by sticker connected with on-line net work, 3) Use of automatic tablet counting and packaging machines connected with on-line net work. Those computer system resulted in curtailment of pharmacy manpower and shortening of waiting-time for outpatient.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2000년도 International Workshop for AIS / ECDIS / VTS Interface
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• pp.119-123
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• 2000

In this paper, authors introduce about Wide Range Vessel Traffic Service (VTS) system using Automatic Identification System (AIS). In order to develop the prototype of Wide Range VIS system, Korean satellite is used for data communication system for AIS. In this system, ship position obtained by using GPS is reported automatically to VTS center through Korean satellite. By using this system, VTS center can cover more wide area than the case using radar only. And the uncertainty of information is decrease. The results of test show the good possibility of VTS using satellite and AIS.

• 디지털산업정보학회논문지
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• 제10권3호
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• pp.11-21
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• 2014

In this paper, concerning the various advertising and policy advertising of the election with respect to whether to deliver a message to a large number of people, we design and implement an automative system what enables sending the text messages directly from the server to the client and also fast feedback is enabled by utilizing a number of operational programs to connect to the server. Therefore, we design and implement the automative communication system which enables delivering message to each user mobile terminal from a plurality of relay mobile terminals by utilizing the mobile instant messenger, not to deliver a message from the server to the mobile instant messenger user directly. In result of comparative analysis on the number of times of data transmission, this automative communication system utilizing mobile instant messenger shows the result that it enables transmitting five times per minute as it can copy and paste in the automation system regardless of the size of the data loading, otherwise in case of transmitting manually it show the result that the number of times of data transmission is reduced if the size of the data is larger.

• 한국통신학회논문지
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• 제29권4A호
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• pp.390-398
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• 2004

본 논문은 SoC 설계시 AMBA 버스와 다른 프로토콜을 갖는 IP간의 통신을 위한 인터페이스 설계를 위한 확장 STG 표현을 제안하며, 이를 적용하여 다양한 IP간의 통신을 위한 프로토콜 탐색 알고리즘과 인터페이스를 자동 생성하는 시스템의 구축을 제시한다. 시스템은 동기/비동기 전송타입, 데이터 사이즈 등이 서로 다른 프로토콜을 갖는 IP 간의 데이터 전송이 가능한 인터페이스 모듈을 생성한다. AMBA AHB 버스와 타겟 IP로써 비디오 디코더간의 매뉴얼한 인터폐이스 설계와 자동생성된 모듈간의 성능을 비교한 결과 burst 통신의 성능은 거의 차이를 보이지 않았다. Single 통신의 경우 매뉴얼한 설계에 비해 다소 떨어지는 성능을 보여줬으나 전체 IP의 면적을 고려할 때 극히 미미한 면적 증가만을 보였다.

• 한국수산과학회지
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• 제28권3호
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• pp.294-300
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• 1995

In aquaculture industrial field, an automatic management and control system is needed to cope with the difficulties such as expensive wage, ripe age of management worker and risk according to the unexpected change of environmental conditions in the aquarium. This paper introduces an automatic aquarium monitoring and control system. The system is developed using PC single board computer. A PC can be connected to multi-single hoard computers, and the communication between PC and single board computers is based on RS-422/485 interfacing method. The physical data of pH, DO, temperature and water level etc. are real-timely treated in the single board computer though individual transducers, transfered to the main monitoring PC through RS-422/485 communication, and those data are graphically shown on the PC monitor. Furthermore, the environmental circumstance can be monitored through the image processing system, and the emergency system can be operated under the condition of environmental incident such as electric power stoppage, DO deficiency, pump shut down and low level water etc.