• 제목/요약/키워드: home control system

검색결과 804건 처리시간 0.028초

무선 인터넷 공유기에서 사물 인터넷 장치 제어를 위한 가상 오브젝트 호스팅 기술 연구 (A Virtual Object Hosting Technology for IoT Device Controlling on Wireless AP's)

  • 양진홍;박효진;김용록;최준균
    • 한국통신학회논문지
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    • 제39C권2호
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    • pp.164-172
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    • 2014
  • IoT(Internet of Things)로 대표되는 사물 인터넷 환경에서 최근 개인 건강 및 홈 자동화 관련 센서류 장치들이 급격히 보급되고 있다. 설치된 장치의 수가 증가함에 따라 사용자 입장에서는 이용하고자 하는 장치마다 개별 서비스 또는 어플리케이션을 찾아 실행해야 하는 번거로움이 생기고, 서비스 공급자 입장에서는 장치간의 정보 공유나 연동 및 통합 제어 기능을 제공하기 어려운 문제가 심화된다. 본 논문에서는 이러한 문제점을 해결하기 위해 댁내 인터넷 서비스의 거점이 되는 무선 인터넷 공유기를 이용, 다양한 IoT 장치들을 연동하고 통합 제어하는 방법을 제시 한다. 이를 위하여, 먼저 IoT 장치를 가상 오브젝트(Virtual Object)화하는 방법을 제시하고, 생성된 가상 오브젝트들을 무선 인터넷 공유기상에서 실행, 연동 및 관리하기 위한 서비스 구조를 제안한다. 또한 이를 직접 홈 환경의 무선 인터넷 공유기상에 구현해 다수의 IoT 장치들을 연결한 상황에서 안정적인 서비스 제공 여부와 무선 라우팅 기능과 병행 동작시의 성능에 대해 시험함으로써, 실제 환경에서의 이용 가능성을 검증한다.

Development of a Bio-mimetic Entertainment Robot with Autonomous Feeding Functionality

  • Cho, Ik-Jin;Choi, Byoung-Jun;Jeong, Kil-Woong;Lee, Yun-Jung
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2004년도 ICCAS
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    • pp.1525-1529
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    • 2004
  • Most of the recently developed robots are human friendly robots which imitate an animal or human such as entertainment robot, bio-mimetic robot and humanoid robot. Interest in these robots are increasing since the social trend is focused on health, welfare, and graying. By these social backgrounds, robots become more human friendly and suitable for home or personal environment. The more bio-mimetic robots resemble living creature, the more human feels familiarity. People feel close friendship not only when they feed a pet, but also when they watch a pet having the food. Most of entertainment robots and pet robots use internal-type batteries and have a self-recharging function. Entertainment robots and pet robots with internal-type batteries are not able to operate during charging the battery. So far there have been a few robots that do not depend on a battery. However, they need a bulky energy conversion unit and a slug or foods as an energy source, which is not suitable for home or personal application. In this paper, we introduce a new bio-mimetic entertainment robot with autonomous feeding functionality, called ELIRO-1(Eating LIzard RObot version 1). The ELIRO-1 is able to find a food (a small battery), feed by itself and evacuate. We describe the design concept of the autonomous feeding mechanism of the ELIRO-1, characteristics of sub-parts of the manufactured mechanism and the control system.

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장거리무선통신 IoT 네트워크 효율성 분석 (Analysis for Efficiency of Long Range Wireless IoT Network)

  • 김기영
    • 한국정보전자통신기술학회논문지
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    • 제9권6호
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    • pp.617-623
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    • 2016
  • 최근 IoT 기술을 적용하여 가정 내의 기기들의 제어와 온도, 습도 등의 정보를 수집하여 실내 환경을 자동으로 제어할 수 있는 시스템의 적용사례가 증가하고 있다. 현재 IoT 디바이스의 네트워크 구성은 IoT 디바이스들을 무선 게이트웨이를 통해 인터넷과 연결하는 방식을 주로 사용한다. 이와 같은 방식은 게이트웨이에 종속적이기 때문에 다양한 서비스를 제공하기에는 한계가 존재한다. 따라서 본 논문에서는 장거리 무선통신 기술을 적용하여 게이트웨이를 사용하지 않고 IoT 네트워크를 구성하여 게이트웨이에 독립적인 방법을 제시하였다. 제안한 장거리무선인터넷 기술을 적용한 IoT 디바이스들은 각각 원격 서버에 접속할 수 있고 기존 방식에서 지원하지 못하는 이동성을 지원하여 보다 다양한 서비스를 제공할 수 있다. 제안한 네트워크 구성방식의 성능평가는 게이트웨이로 구성하는 기존 네트워크 방식과 제안하는 네트워크 구성방식에서 각각 발생하는 지연시간과 데이터의 량을 비교하였다. 분석결과를 통해 제안한 방식에서 게이트웨이에서 발생하는 지연시간과 데이터의 량이 감소하는 것을 확인하였다.

iOS 인터페이스를 지원하는 가정용 IoT 재배 시스템 설계 및 구현 (Design and Implementation of Home IoT Cultivation System with iOS Interface)

  • 정승균;김규동;김병창
    • 정보처리학회논문지:컴퓨터 및 통신 시스템
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    • 제12권2호
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    • pp.61-68
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    • 2023
  • COVID-19와 대기오염으로 인해 '반려 식물'과 '플랜테리어'에 대한 수요가 점차 증가하고 있다. 플랜테리어를 위한 스마트 화분은 재배에 필요한 기능을 문제없이 제공하면서 크기는 줄어들어야 하고, 사용자의 이용편리성을 위해 장거리 제어가 가능한 사용자 인터페이스를 제공해야한다. 본 논문에서는 화분에 사물인터넷을 접목하여, IoT 재배 시스템을 구현하였다. 사용자 인터페이스는 iOS 앱으로 개발하였으며, 증가하는 iPhone 사용자들에게 익숙한 UX/UI 디자인으로 구현하였다. 스마트폰 앱과 가정의 재배 시스템이 인터넷을 통해 통신함으로써, 언제, 어디서나 화분의 상태를 확인하고, 제어할 수 있게 구현하였다. 서버와 재배 모듈이 분리되어, 재배 모듈 자체의 크기를 줄였다. 화분 하단에 물통이 존재하여, 배액이 물통으로 흘러내려오는 순환식 구조를 채택하였기 때문에 '플랜테리어'에 적합한 모듈이 될 수 있을 것으로 기대한다.

고속회전을 지원하는 SRM형 BLDC 모터 제어알고리즘 및 성능분석에 관한 연구 (A Study on High-speed SRM-BLDC Motor Controller and its Performance)

  • 김기중
    • 한국산학기술학회논문지
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    • 제13권10호
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    • pp.4751-4756
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    • 2012
  • 브러쉬형 모터는 여러 가지 전기기계 및 가전제품에서 미세먼지와 유해물질을 발생시키는 것으로 알려졌다. 그래서 브러쉬가 없는 형태의 모터가 브러쉬형 모터를 대신하여 친환경적인 대안으로 제안되었다. 또한 BLDC 모터의 값비싼 마그넷 회전자는 SRM형으로 대치되고 있는데 SRM은 시스템의 허용범위 내에서 전류값이 넘지 않도록 해야하는 제어를 요구한다. 본 논문에서는 SRM형 BLDC 모터를 사용하여 고속회전을 제어하기위한 경제적인 제어기와 효율적인 접근방법을 소개한다.

임베디드 시스템에서의 상황인식 제어를 위한 상태전이 기반 상황 모델링과 이를 응용한 상황-동작 변환기 (SAC)의 설계 (A state transition based situation modeling and its application to design of SAC(Situation-Action Converter) for situation-aware control for embedded systems)

  • 허길;박희정;조위덕;최재영
    • 한국정보과학회논문지:시스템및이론
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    • 제33권9호
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    • pp.642-649
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    • 2006
  • 지능형 서비스를 제공하는 환경에서 상황을 인식하기 위하여 임베디드 시스템이 갖는 제한적인 리소스와 컴퓨팅 파워 환경에 적합한 상태 전이 기반 상황 표현 모델을 제안하고, 이를 인식하는 상황 인식기와 제어 신호를 발생시키는 동작 발생기를 결합한 임베디드 시스템에 탑재하기에 적합한 상황-동작 변환기(SAC)를 설계하였다. 또한 ARM 프로세서 기반의 임베디드 보드에 설계된 상황-동작 변환기를 응용한 상황 관리기를 구현하여 이를 스마트 스케줄러 서비스에 활용하였다.

저소득층 아동의 사회성증진을 위한 집단상담 프로그램 효과 연구 (Effectiveness of the Group-Counseling Program to Improve Social Ability in the Children from Low-Income Families)

  • 이정숙;유정선
    • 가정과삶의질연구
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    • 제23권3호
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    • pp.127-136
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    • 2005
  • The purpose of this study was to assess the effectiveness of a group-counseling program to improve children's social ability. For this study, six children were selected for an experimental group and another six for a control group. They were tested using the Social Skill Rating System for Preschool level. In addition to a quantitative analysis, a qualitative analysis was conducted to examine group processes and changes of each child. The experimental group participated in a socio-drama group art therapy, and game play therapy whereas the control group did not receive any treatment. In order to examine the impact of the intervention, ore-program tests and post-program tests were conducted. The results were as follows: First, children's social ability was improved. There was a significant difference in social ability between the experimental and the control group. Second the group counseling program was proved to be effective. This program was primarily designed for children from low-income families.

Open IPTV 환경에서 재암호화 과정 없는 댁내 컨텐츠 분배를 위한 키관리 기법 (A Key Management Scheme without Re-encryption for Home-domain Contents Distribution in Open IPTV Environments)

  • 정서현;노효선;이현우;이정현;정수환
    • 한국컴퓨터정보학회논문지
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    • 제15권7호
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    • pp.57-66
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    • 2010
  • 최근 IPTV 환경이 점차 개방형 IPTV로 발전함에 따라, 댁내에서 사용되는 IPTV 단말의 경우도 다양한 형태로 발전하고 있다. 이러한 환경에서 사용자는 노트북, 휴대폰, PDA와 같은 댁내에 존재하는 다양한 IPTV 서비스 가용 단말을 통해 IPTV를 시청할 수 있게 된다. 하지만, 방송 콘텐츠보호를 위해 셋탑박스 (STB)에 탑재된 CAS 기술로 인해 같은 댁내에서도 각 단말의 개수만큼의 STB를 필요로 하거나, STB에 연결가능한 모든 단말에는 CAS가 해제된 상태로 무제한 제공하여야 하는 것이 현재의 기술 수준이다. 본 논문에서는 추가적인 STB 설치 없이 댁내 사용자가 선택한 IPTV 가용 단말들로 컨텐츠를 재분배함과 동시에 서비스 사업자가 복수의 사용자 단말에 대하여 수신제어가 가능한 기술을 제안한다. 제안 기법은 RSA 서명의 개인키 분할 방식을 사용하여 STB에서 댁내 IPTV 단말로 전달되는 컨텐츠를 기존 CAS 시스템을 통해 스크램블링된 내용 그대로 재암호화과정 없이 전달할 수 있다. 따라서, 제안기법은 STB에서 사용자 단말 구간에 재암호화 기법을 활용하여 콘텐츠를 분배하는 기존 기법에 대비하여, 기존의 보안 수준을 유지하면서도 계산량 및 전송량 측면에서 기존 기술과 비교하여 많은 성능개선과 함께, 댁내에 재분배되는 컨텐츠에 대한 불법적인 유출을 방지하는 효과도 부수적으로 제공한다.

가정학교육 영역에서의 인구교육문제에 관한 조사연구 -선임가정학자들을 대상으로- (A Study of the Attitude of/and Problems Encountered by Senjor Home Economist Toward the Integration of Family Planning Education in the Korean Formal School System)

  • 김지화
    • 대한가정학회지
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    • 제19권3호
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    • pp.83-101
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    • 1981
  • Under the full consideration of the growing need and importance of population education in the field of home economics in Korea, the study was carried out to verify and assess the following facts on the current issues of population education of home economists who are presently engaging in teaching professions as the teachers of middle and high school and professors of college and universities by setting its primary objectives of the study as followings; 1) to assess the degree of general knowledge and attitudes of home economists toward population education in the field of home economics, 2) to verify the problems encountered in implementing population education by home economists in its field, 3) to find an existing status of previous trainings received and other activities of population education of home economists aimed at utilizing these findings as a part of reference materials when the population education is conducted in the field of home economics. In order to attain these objectives described above, the questionnaire was carefully designed to house a total of 40 questions with good combination of multiple-choice and the simple answer questions. The mail questionnaire survey was conducted by establishing teachers of home economics at middle/high schools and college/universities as Senior Home Economists(SHE) who are from public, private liberal arts and vocational schools. The rate of response observed during the survey was 45.6 percent and the findings of the survey research are as follows: 1) Examining the status of the respondents by residence and religion, it was found that 45 percent of middle & high school teachers ar.d 59. 1 percent of college professors are residing in Seoul city area and that the largest percent of them are christian in their religion. Analyzing respondents by their ages, 56 percent of middle/high school teachers are in their 30s, 45 percent of college professors are in their 40s, and 37 percent of college teachers are in their 30s. In addition, 13 percent of the total respondents are found to be unmarried. The study also revealed that 71 percent of the college professors finished Master Degree course and 82 percent of middle/high school teachers are graduated from college level lasting 4 years. Looking over the status cf major fields of respondents, 68.4 percent of middle/high school teachers are specialized in home economic education and the college professors, on the other hand, show relatively even prortion by specializing in the order of food & nutrition science, clothes & textile science and home managerial science. As far as the length of teaching experience is concerned, a relatively longer period of teaching experience is observed in the college professors in comparison with that of middle/high school teachers. In other words, 33.3 percent of middle/high school teachers are experienced in teaching from 6 to 10 years on average while 43.9 percent of college professors show more than 16 years of experience. 2) Examining the status of existing number of children cf the respondents, one boy and one daughter pattern is predominant, showing 28.5 percent in middle/high school teachers and 21.1 percent in college professors. As for the desired number of children of unmarried respondents, it is observed that 43.8 percent of middle/high school teachers desire to have one boy and one girl, and 31.3 percent of college professors want to have one child regardless of the sex. By assessing the degree of awareness of the population education through their students, it is observed that 53 percent of middle/high school teachers and 50 percent of college professors are aware of population education in some extent and that a majority of respondents took the positive attitudes toward an inclusion of family planning components into the formal school education. Another noteworthy to observe is that a total of 84.8 percent out of middle/high school teachers pointed that the population education currently conducted at schools as a part of home economics are less sufficient than it should be. 3) Analyzing the tendency as to whether the respondents were experienced in receiving population education during the time when they were students, 75 percent of college professors and 59 percent of middle/high school teachers responded negative answers in the survey. In the mean time, a total of 50 percent of the respondents replied that they began to acknowledge the importance of population education mainly through the participation of some sort of population-education orientend seminars, experienced by 40 percent of college professors and 80 percent of middle/high school teachers. 4) What it calls attention in this study was to find that 96.5 percent of middle/high school teachers and 72 percent of college professors conduct population education to some extent during their lecture hours and that more than 80 percent of them are never experienced in teaching population and family planning contents in their regular classes. It is, on the other hand, found that no more than once was the response of those who believe themselves that they are experienced in teaching these relevant components to their students. Analyzing the contents of the subjects being taught in the class, a large percent of them are found to be consisted of population and family planning contents. According to this study, the current population education through the formal school is quite inactive. Analyzing the facts, 44.9 percent of the college professors responded that the population and family planning components are quite apart from their specialization which eventually generates lack of interest in the field. 5) It is also noticed through the study that the degree of frequency of commenting on population and family planning contents during the classes was depending significantly on their specializations which means that the degree of frequency varies from a major to another. Those who majored in home managerial science was the first one, as compared to others who majored in different specializations. Glancing over the status of correlations between ages of the respondents and numbers of seminar paticipation, it is quite clear that the aged group participated more than the younger group did, and that the most highest number of participations made by college professors were those who are in 50s. In addition, it is also found that those who are aged 20s and 60s of the respondents were the group who comments least on the contents of population and family planning at their classes. The suggestions and recommendation made through this survey research are as follows. 1) No one denies that the rapid increase of population, as compared to the limited size of land and resources, will certainly affect adversly to an enhancement of individual life quality which will, eventually, bring forth the poverty of the nation. This is the reasson why we are insisting that the world population be controlled up to an optimum level with a matter of global concerns. It is our understading that the primary aim for reducing number of population is believed to be attained only by conducting the systematic and comprehensive population education through the formal schools. Therefore, the role of home economists in the field of population/family planning education is considered very importment due to the fact that an ultimate goal of population education is placed in elevating the quality of family life by having optimum number of children through family planning program. 2) It is quite clear that home economists as teachers of formal school in all level are invited to pay their attention on redefining the ultimate goal of education and that of population education. We also understant that the primary objective of population education is to change the norm and value of the clients by replenishing the students with pertinent knowledge and attitudes on population and its related problems through a sort of education in order to attain the ultimate goal for enhancing the quality of life. There is no exception in the theory of home economics. An altimate goal of home economics is to elevate the general quality of life through an establishment of value existed in daily life. Considering the relations between population education and home economics, it is quite indespensable to bandle population components as an integral part in the field of home economics. We believe, therefore, that the senior home economists positive participation in the effort population control is more needed than it has been. 3) It is also strongly urged that population education should be a part of instructor training course for home economics. In other words, the teacher of home economics should be well aware of population and its problems by teaching interrelationship between population education and home economics, needs, contents and methods of population education during the instructor training courese for home economics. In addition, the senior home economists should be encouraged through positive participation on the short term training by types of domestic and international seminar, workshop, etc. 4) We certainly believe that the population education can not sustain itself without any backing-up of information and findings' of various and comprehensive researches of natural and social sciences. Accordingly, every senior home economist is invited to exert their maximum effort to conduct systematic study with an aim to utilize these findings and information at best in population education in the field of home economics. Therefore, we consider that the development of training material is imminent in order to provide effective and efficient population education through the for training of home economies. It should be noted that these training materials must be carefully designed, tailored and developed to meet the different classes of trainees under the considerations as to whether it is easily adaptable and infusable into the curricula of every field of home economics, and it is acceptable in the degree of difficulty and quality in its contents. 5) It is true that there are many domestic and international research rapers, reports and findings in the field of population education and family planning. However, there is a tendency that the most of research papers are heavily relying on the authors intension and preferences in its expression and publication. Under these circumstances, it is urged that the home economists should aware of the growing need of the technical training in order to keep these available information and research findings reprocessed and redesigned to insure the practical application into the population education in the field of home economics in Korea.

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UHF 대역 RFID를 이용한 선박내 인원관리 시스템 설계 (A Design of a Personnel Control System Using UHF-RFID in Shipping)

  • 차진만;김명환;박연식;성길영;이상욱
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2008년도 추계종합학술대회 B
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    • pp.832-835
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    • 2008
  • 현대사회의 정보화 기반 시스템은 매우 빠른 속도로 변하고 있으며, 무선통신과 센서 네트워크 분야 또한 변하고 있다. 센서 네트워크 분야에서는 RFID 태그를 이용하여 홈 네트워크, 각종 제어시스템, U-헬스케어 시스템과 물류 유통에 까지 그 영역을 확장하고 있다. 이중 RF태그를 이용한 제어 분야에 대한 연구는 본격적인 서비스 인프라를 지향하기 위해 진행되고 있으며, 각종 이력 정보와 주변 환경 정보를 센싱하고 제어하는 지능형 센서네트워크 구축을 위한 핵심 영역이 되고 있다. 본 논문에서는 이러한 취지의 한 기반으로 RFID 기술을 선박에 적용하여 선박 내 인원의 출입의 통제시키고 안전사고 방지를 위한 선박 내 보안과 안전을 위한 인원 관리시스템을 설계하고 구현하였다.

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