• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2010년도 춘계학술대회
• /
• pp.879-881
• /
• 2010

사회의 급속한 발전으로 다변화되어 핵가족화, 1인가구화 등 전통적인 가족기능의 변화로 인해 노인들은 고향집에 홀로 남겨지는 경우가 많다. 그러면서 노인들이 홀로 있으면서 건강관리와 안전상의 문제가 제기되어 왔다. RFID 기술의 급속한 발전과 함께, 그 애플리케이션은 우리 삶의 모든 영역을 확장하고 다양한 산업의 주요 주제가 되어있다. 현대사회의 급속한 경제성장, 그리고 과학과 의학의 발전은 노인들의 평균수명 연장이 연장되었고 그로인해 노인들의 안전한 보호시스템이 필요한 실정이다. 본 논문에서의 self-care 시스템은 RFID(Radio Frequency Identification)를 이용하며, 사용자를 인증하고 TTS(Text To Speech)로 문자신호를 음성신호로 변환하고, 적외선 방사 기술을 이용하여 집을 효과적으로 보호하고 또 전자 혈압 측정기를 통하여 고령자의 신체를 검사하는 기술로 설계된다.

• 정보교육학회논문지
• /
• 제11권2호
• /
• pp.139-146
• /
• 2007

현재 RFID(Radio Frequency Identification) 카드를 이용한 활용분야는 의료, 유통, 군사, 제조, 보안, 등 다양하게 확장되고 있다. RFID 기술은 식별 대상을 원거리에서 무선 주파수를 통해 한꺼번에 많은 정보를 인식할 수 있는 장점으로 인하여, 기존에 사용하던 바코드를 대체할 기술로서 주목받고 있다. 또한, 학교에서도 도서대출 관리 및 학생출석 관리 등의 RFID를 이용한 시스템에 대한 관심이 높아지고 있다. 본 논문은 RFID 카드를 이용한 출석관리 시스템을 개발하였으며, 교수들은 출석현황을 모바일로 확인할 수 있도록 하였고, 학생들은 웹을 통해서 언제든지 자신의 출석현황을 조회할 수 있도록 하였다. 그리고 학생들의 정보는 RFID 태그가 내장된 학생증을 소지하는 것만으로도 RFID 카드 판독기를 통해 정보가 수신된 후 DB에 저장되게 하였으며, 교수와 학생은 각각 관리자 프로그램과 웹 프로그램을 통해 출석부와 시간표를 관리하고 출력할 수 있다.

• 반도체디스플레이기술학회지
• /
• 제6권2호
• /
• pp.59-63
• /
• 2007

Radio Frequency Identification (RFID) is a common term for technologies using micro chips that are able to communicate over short-range radio and that can be used for identifying physical objects. RFID technology already has several application areas and more are being envisioned all the time. While it has the potential of becoming a really ubiquitous part of the information society over time, there are many security and privacy concerns related to RFID that need to be solved. This paper proposes a method which could protect private information and ensure RFID's identification effectively storing face feature information on RFID tag. This method improved linear discriminant analysis has reduced the dimension of feature information which has large size of data. Therefore, face feature information can be stored in small memory field of RFID tag. The proposed algorithm in comparison with other previous methods shows better stability and elevated detection rate and also can be applied to the entrance control management system, digital identification card and others.

• ETRI Journal
• /
• 제30권5호
• /
• pp.634-643
• /
• 2008

One of the ubiquitous technology fields that have received the most attention recently from technology communities worldwide is mobile radio frequency identification (RFID). Mobile handsets loaded with RFID readers enable the identification and retrieval of information on RFID tagged objects. In Korea, a variety of mobile RFID services are currently being piloted, and their commercial roll-out looks imminent. The goal of this study is to propose, ahead of the commercial launch of mobile RFID services, a customer satisfaction index (CSI) model for this service category and to then measure the CSI to derive practical implications for their providers and pointers related to the improvement of service. A web survey was conducted on Korean mobile phone subscribers who had participated in a mobile RFID pilot program. Using the results of this survey, we tested the CSI model and its hypotheses by employing a partial least-squares-based structural equation model analysis and calculated the index. We further conducted an importance-performance analysis in order to provide insights that may be useful for improving the quality of mobile RFID services.

• 대한전자공학회논문지SD
• /
• 제45권4호
• /
• pp.64-71
• /
• 2008

SAW(Surface Acoustic Waves)를 기반으로 passive RFID(Radio Frequency IDentification) tag 및 송수신 시스템을 제작하였다. Pulse position encoding 방식의 SAW ID 태그(tag)를 제작하여 amplitude on/off 방식의 SAW ID 태그에 비해 3배의 데이터 용량 증대 효과를 얻을 수 있었다. 또한, 수신 시스템을 heterodyne 방식과 direct conversion 방식으로 제작하였다. 측정 결과 direct conversion 방식으로 제작된 수신 시스템이 heterodyne 방식의 수신 시스템과 비교하여 isolation 특성이 10 dB 증가하였으며, 그 결과 무선 도달 거리가 증가했다.

• 대한의용생체공학회:의공학회지
• /
• 제28권5호
• /
• pp.703-712
• /
• 2007

In this paper, we designed the RFID(Radio Frequency Identification) Emergency Medical Information System(REMIS). This REMIS offers the emergency patient's medical information using RFID and HL7(Health Level 7) to an emergency medical technician. In emergency situation as like coma, if the communication, from the patient's current location to the hospital, is possible, REMIS offer the medical information of the patient through REMIS server to an emergency medical technician. In the state of communication blocked, REMIS can offer the patient identification and the emergency information through RFID tag, which the patient wear, to an emergency medical technician. When this system was designed, the protection of the patient's medical information and their privacy was considered, and the HL7 was used to be compatible with another medical systems. Therefore, in this paper, REMIS was designed that it is always possible to offer the emergency patient's information to an emergency medical technician regardless of any communication status and to improve the emergency rescue process, effectively.

• 한국해양공학회지
• /
• 제24권4호
• /
• pp.86-93
• /
• 2010

RFID has been used as an identification tool that substitutes for bar codes. Its areas of application are increasing due to its suitability in ubiquitous environment. In this paper, first, we review various aspects of RFID, including standards, characteristics, and relationships with wireless sensor networks. Then, we review the technical aspects of RFID and its areas of application, e.g., supply chain management (SCM) and manufacturing since 2005. SCM, in which RFIDs can shorten lead time and ensure the quality of products, is one of the most active application areas. Manufacturing is a relatively new area for RFID applications, but it is believed that it can enhance the productivity and the reliability of the products. Also, the authors suggest research issues and limitations of RFID, as well as possible application areas related to marine engineering.

• Journal of Biosystems Engineering
• /
• 제27권5호
• /
• pp.459-466
• /
• 2002

In Korea, a need of automatic dairy farm management system has been increased to lower production cost and to strengthen international competition. However, the present management system was mostly relied on foreign technologies and caused some problems in post management and after-sales services. Therefore, though there is a problem of price and quality at present, domestic technologies of the management system should be developed for the long run. This study was conducted to develop an electronic identification unit for an automatic dairy farm management system. The developed system was consisted of a tag, a reader, a switching circuit, and a personal computer. The tag attachable to each individual cow was developed to transmit individual radio frequency(RF) code into the air with modulation of ASK(amplitude shift keying). And the switching circuit was added to avoid confusion on reception and transmittance. The reader attached to a feeding device was developed to transmit activating signal periodically and to identify code of the individual tag when the tag was approached to the device. The reader was consisted of an active filter, a detecter, a comparator and a microcontroller. The test result was feasible enough to apply it for the automatic farm management system and the identified maximum distance was about 37cm.

• Journal of Communications and Networks
• /
• 제14권1호
• /
• pp.34-39
• /
• 2012

Collisions between tags greatly reduce the identification speed in radio frequency identification (RFID) systems and increase communication overhead. In particular for an active RFID system, tags are powered by small batteries, and a large number of re-transmissions caused by collisions can deteriorate and exhaust the tag energy which may result in missing tags. An efficient collision-free arbitration protocol for active RFID systems is proposed in this paper. In this protocol, a new mechanism involving collision detection, collision avoidance, and fast tag access is introduced. Specifically, the pulse burst duration and busy-tone-detection delay are introduced between the preamble and data portion of a tag-to-reader (T-R) frame. The reader identifies tag collision by detecting pulses and transmits a busy tone to avoid unnecessary transmission when collision occurs. A polling process is then designed to quickly access the collided tags. It is shown that the use of the proposed protocol results in a system throughput of 0.612, which is an obvious improvement when compared to the framed-slotted ALOHA (FSA) arbitration protocol for ISO/IEC 18000-7 standard. Furthermore, the proposed protocol greatly reduces communication overhead, which leads to energy conservation.

• 정보보호학회논문지
• /
• 제17권5호
• /
• pp.141-146
• /
• 2007

실생활에서 자동 인식 시스템은 바코드를 이용한 시스템이 대부분을 차지하며, 이러한 바코드 기반 자동 인식 시스템은 바코드의 인식거리에 대한 제한과 보안상의 문제점을 지적 받아왔다. 최근 바코드 기반 자동 인식 시스템보다 저장능력이 뛰어난 비접촉식 무선 주파수 인식(RFID: Radio Frequency Identification) 시스템이 주목을 받고 있으며 많은 연구가 이루어지고 있다. 특히 RFID 시스템은 물리적인 접촉없이 개체에 대한 정보를 인식한다는 점에서 화폐의 위 변조를 확인하는 매체로 사용가능하다. 본 논문에서는 RFID 시스템을 화폐에 적용하여 화폐의 위·변조 여부가 확인 가능한 지급결제시스템을 제안한다. 제안하는 지급결제시스템은 사용자의 프라이버시 침해의 문제를 해결하였으며, 추가적으로 위 변조 화폐의 사용자를 추적할 수 있는 기능을 제공한다.