• 전자공학회논문지 IE
• /
• v.48 no.4
• /
• pp.40-46
• /
• 2011

In this paper, we introduce a hybrid RFID reader to recognize the pets. There is no the RFID reader to recognize a different types of frequency simultaneously. The RFID reader with 134.2 KHz has disadvantages with limited recognition radius and direction. The developed reader is dual-frequency RFID reader (134.2 KHz, 13.56 MHz) that is capable of identifying the pets with a different types of tags. The prototype model in the field test shows that the recognition coverage increases compared to the imported reader.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.11
• /
• pp.2569-2574
• /
• 2013

In 13.56MHz RFID system of Auto-ID center, STAC protocol is defined as an anti-collision algorithm for multiple tag reading. In STAC protocol, the reader uses the tag number estimation scheme to determine the number of slots for the next reply round. If errors occur in the estimated number of tags, the identification performances will be degraded due to a lot of collision or idle slots. Therefore, in this paper, we propose an ERPB algorithm that the reader cancels the reply round when it experiences a series of collision or idle slots during the current round. The transmission probability control for the tag is also applied to the proposed algorithm. Through simulations, it is demonstrated that the collision rate for the proposed scheme is about 39% lower than STAC protocol. Therefore, the proposed scheme can achieve faster tag identification time compared with STAC protocol due to the low collision rate.

• Korean Security Journal
• /
• no.21
• /
• pp.155-175
• /
• 2009

RFID that provide automatic identification by reading a tag attached to material through radio frequency without direct touch has some specification, such as rapid identification, long distance identification and penetration, so it is being used for distribution, transportation and safety by using the frequency of 125KHz, 134KHz, 13.56MHz, 433.92MHz, 900MHz, and 2.45GHz. Also it is one of main part of Ubiquitous that means connecting to net-work any time and any place they want. RFID is expected to be new growth industry worldwide, so Korean government think it as prospective field and promote research project and exhibition business program to linked with industry effectively. RFID could be used for access control of person and vehicle according to section and for personal certify with password. RFID can provide more confident security than magnetic card, so it could be used to prevent forgery of register card, passport and the others. Active RFID could be used for protecting operation service using it's long distance date transmission by application with positioning system. And RFID's identification and tracking function can provide effective visitor management through visitor's register, personal identification, position check and can control visitor's movement in the secure area without their approval. Also RFID can make possible of the efficient management and prevention of loss of carrying equipments and others. RFID could be applied to copying machine to manager and control it's user, copying quantity and It could provide some function such as observation of copy content, access control of user. RFID tag adhered to small storage device prevent carrying out of item using the position tracking function and control carrying-in and carrying-out of material efficiently. magnetic card and smart card have been doing good job in identification and control of person, but RFID can do above functions. RFID is very useful device but we should consider the prevention of privacy during its application.

• Proceedings of the Materials Research Society of Korea Conference
• /
• 2009.05a
• /
• pp.11.2-11.2
• /
• 2009

본 발표에서는 flexible display의 back plane 구동 소자, organic sensor, 그리고 organic radio frequency identification (RFID) Tag 등으로의 응용을 목표로 최근 활발히 연구 중인 유기 반도체 박막 트랜지스터에 대한 소개를 바탕으로 유기 반도체를 전자회로 분야에서 사용하기 위해 해결해야 할 문제점과 연구 개발이 절실히 필요한 부분에 대해 소개하고 자 함. organic RFID 응용 기술에 초점을 두고 RFID 기술의 개요, 종류, 주파수 대역 등에 대한 기초적인 지식을 바탕으로 organic RFID의 향후 시장 전망에 대해 토론한 후 현재 PolyIC, Organic ID, IMEC 등의 선진사에서 상용화를 목표로 활발히 연구 중인 organic RFID의 세계적 기술 수준과 최근 연구 결과들을 공유하고자함. 최근 ETRI에서 향 후 바코드 대체용으로 활발히 연구 중인 item level tagging용 13.56 MHz프린팅 RFID 기술을 소개하고 이를 구현하기 위한 유기반도체 트랜지스터, 정류기 등 다양한 종류의 회로들을 프린팅 소재와 공정으로 제작할 때의 문제점을 공유하고, 더 나아가 프린팅 전자 소자의 상용화를 위한 향 후 연구 개발 주제 및 방향 등에 대해 토론하고자함.

• Proceedings of the KAIS Fall Conference
• /
• 2008.11a
• /
• pp.316-319
• /
• 2008

본 논문에서는 유아의 장난감에 RFID 시스템을 도입하여 유아가 흥미있어하는 장난감에 Tag를 삽입하고 Display 장치 부근에 RFID-Reader를 설치하여 장남감이 Reader 근처에 위치하게 되었을 때 장난감에 해당되는 학습정보를 Display 장치를 통하여 보여준다. 본 논문의 결과 유아가 장난감을 가지고 노는 동안에 영상, 음성 등의 콘텐츠를 Display 장치를 이용하여 보여주고 들려 줌으로써 자연스럽게 장난감의 정보를 학습할 수 있도록 하였다. RFID의 인식률과 인식거리를 감안하여 13.56MHz의 수동형 태그를 사용하였으며, 최대 인식거리는 20Cm에서 인식할 수 있도록 하였다. 실험은 RFID의 인식률과 콘텐츠의 자동인식 및 실행에 중점을 두었으며, RFID의 인식은 하나의 태그 인식에서는 99%이상의 성공을 하였고 두개이상의 태그에 대해서는 첫 번째 태그만을 인식할 수 있게 설계하여 콘텐츠를 실행하도록 하였다.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.7 no.3
• /
• pp.43-53
• /
• 2011

The many cities are changing in the city form where the person and nature are mixed. Namely, the government invests many expense in tree field of distance space for the change in the green city. In this paper, we design and implement a tree growth management system using PDA built in 13.56MHz RFID reader and CBD(Component Based Development) for ubiquitous computing environments. Our system provides history management to increase business efficiency for location coordinate of tree and history information of tree which using RFID, the RFlD tag is attaching the new tree and that is inputting GPS location information in PDA and provides tree information of tree by location coordinate to history management. Finally, we show from a performance analysis that our system achieves about 85% average tree read rate of RFID under test scenario environments.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.10 no.2
• /
• pp.77-83
• /
• 2011

In this paper, we present the design procedure of the synchronizer and the demodulator of a 13.56MHz RFID PJM tag, which was standardized in ISO 18000-3 mode 3. We optimize the algorithms in order to minimize the number of registers and implement them based on international standard. The designed module is simulated by Modelsim and FPGA. The synchronizer is composed of 3 correlators that is implemented by 1,024(16bit ${\times}$ 64cycle) registers. The demodulator is composed of 2 correlators that is implemented by 128(2bit ${\times}$ 64cycle) registers. The simulation performed with the demodulator integrated with the synchronizer shows that it works at about 87% success rate with the test data of SNR -2dB and 100% with those of SNR 4dB.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2014.05a
• /
• pp.454-457
• /
• 2014

Arduino is for design based on open source prototyping platform, artist, designer, hobby activists, etc, i has been designed for all those who are interested in the environment construct. Arduino adventage you can easily create applications hardware, without deep knowledge about the hardware. Configuration of arduino using AVR microcontroller ATmage 168, software to action arduino using arduino program, MATLAB, Processing. Arduino is open source base, you can hardware production directly and using shield additionally, the arduino can be combined. Android is open source. Continue to expand through a combination of hardware, Arduino. It name is shield. Be given to the Arduino Uno board to the main board, the shield extends to the various aspects and help can be equipped with more features. The shield on top of the shield can be combined as a kind of shield and Ethernet shield, motor shield, the shield RFID hardware beyond a simple extension can be configured. In this paper, RFID technology Sealed for automatic recognition of the elderly by the elderly to identify and tag them SM130 13.56Mhz compatible hardware was constructed by combining tags.

• Journal of the Korea Safety Management & Science
• /
• v.11 no.4
• /
• pp.169-176
• /
• 2009

Many researches and projects are implemented about u-IT according to changes of ubiquitous environments in the world. Especially, there are benefits to raise lifestyle and we can develop industry by applying ubiquitous regionally. Also it makes citizen feel comfortable directly. There are many projects to regionally adopt ubiquitous services like u-City model for getting this advantages. RFID technology must be suited to each environment because each RFID tag has different characteristics according to frequency band. We need to integrate bands of RFID to overcome limitations and provide more detail information and services. In this study, we develop the dual band RFID Manager needed adopting u-Zone service for both 13.56MHz and 2.45GHz. The RFID Manager, application software for base station of u-Zone, delivers the information from readers to integrated u-Zone server system.

• Proceedings of the Korean Society of Medical Physics Conference
• /
• 2006.08a
• /
• pp.27-27
• /
• 2006