• Title/Summary/Keyword: Passive radio-frequency identification(RFID)

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Personal Identification Based on Radio Signal Strength for Ubiquitous Healthcare Systems

  • Lee, Jong-Shill;Park, Sang-Hae;Chee, Young-Joon;Kim, In-Young;Kim, Sun-I.
    • Journal of Biomedical Engineering Research
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    • v.28 no.3
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    • pp.325-331
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    • 2007
  • Personal identification is essential for the automatic measurement of biosignal information in home healthcare systems. Personal identification is usually achieved with passive radio frequency identification (RFID), which does little more than store a unique identification number. However, passive RFID is not ideal for automatic identification. We present a user identification system based on radio signal strength indication (RSSI) using ZigBee for active RFID tags. Personal identification is achieved by finding the largest RSSI value from aggregated beacon messages that are periodically transmitted by active RFID tags carried by users. Obtaining reliable person!'.! identification without restricting the orientation requires a certain distance between the closest active RFID tag from the ZED and the second closest tag. The results show that the closest active RFID tag from the ZED and the second closest tag must be at least 70 cm apart to achieve reliable personal identification.

A Study on Implementation of Passive RFID Tag System Using A Capacitive method (Capacitive방식을 이용한 Passive RFID Tag System 구현)

  • 배명수;여영호;손수국
    • Proceedings of the IEEK Conference
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    • 2002.06a
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    • pp.199-202
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    • 2002
  • This paper is about the implementation of Passive RFID(Radio Frequency Identification) tag system using a capacitive method, and explains the design and circuit's structure of this system. Fundamentally the capacitive RFID tag system consists of a tag reader, a passive tag and a host computer. And then this paper shows the system's prototype which analyzes a specification, and suggests the passive RFID system as a new method which manufactures a low cost tag system easily

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RFID Mutual Autentication Protocol Using AES (AES를 이용한 RFID 상호인증 프로토콜)

  • Kim, Seok;Han, Seung-Jo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.9
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    • pp.1963-1969
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    • 2012
  • Recently use of RFID(Radio Frequency Identification) tends to be rapidly increased and will be also extended throughout the whole life. Using radio-frequency data can be recognized automatically in the RFID system is vulnerable to personal information protection or security. And passive tags have a hardware problem is the limit for applying cryptographic. This paper presents an authentication protocol using AES and Nounce. After completing mutual authentication server to access and strengthen security vulnerability to the use of the Nounce, because safety in denial of service attacks.

The design of reader for contactless ID card system (비접촉 ID 카드 시스템을 위한 리더 설계)

  • 진인수;양경록;류형선;김양모
    • Proceedings of the IEEK Conference
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    • 2000.06e
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    • pp.199-202
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    • 2000
  • RFID (Radio Frequency Identification) is a technique which is used for identifying different types of objects and tracking people and animals. Passive RFID consists of reader, a passive tag. The reader transmit energy to a tag and read information back from tag. The tag is energized by a carrier frequency which is transmitted by the reader and transmit information back to the reader. In this paper, the circuit for read and write RFID system is presented. The presented RFID system adopts 125kHz carrier frequency, backscattering and PSK for communication method.

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SAW ID Tag and Receiver System for Passive RFID System Application (수동형 RFID 시스템 적용을 위한 SAW ID 태그 및 수신 시스템 구현)

  • Kim, Jae-Kwon;Park, Joo-Yong;Burm, Jin-Wook
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.45 no.4
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    • pp.64-71
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    • 2008
  • SAW (Surface Acoustic Waves) ID (identification) tags have been designed and implemented for RFID (Radio frequency IDentification) systems. With SAW ID tag of pulse position encoding method, the data capacity increased 3 times compared with SAW ID tag of amplitude on/off method. Two different kinds of SAW ID tag receiver systems, heterodyne and homodyne receiver systems, were made. The direct conversion receiver showed better isolation property, 10 dB improvement than the heterodyne receiver to increase wireless interrogation distance.

An Interactive Learning using Wearable Wireless RFID Glove (무선 RFID 장갑을 이용한 인터랙티브 학습)

  • Jung, Kyung-Kwon;Hyun, Kyo-Hwan;Lee, Hyun-Kwan;Eom, Ki-Hwan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2007.10a
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    • pp.721-724
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    • 2007
  • Radio Frequency IDentification (RFID) is increasingly popular technology with many application. The majority of applications of RFID deployed in supply-chain management. In this paper, we present a wireless RFID glove in interactive learning method. Objects tagged with a small passive RFID tag, can be sensed at short ranges by using wireless RFID glove. We describe the wireless RFID glove prototype, and present some interactive learning programs and games.

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A Method to Improve Isolation for Passive RFID Applications (수동형 RFID 시스템 적용을 위한 Isolation 개선 방법)

  • Kim, Jae-Kwon;Burm, Jin-Wook
    • Journal of the Institute of Electronics Engineers of Korea CI
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    • v.44 no.4 s.316
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    • pp.45-49
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    • 2007
  • The isolation between transmitter and receiver has been a critical problem in a pulse-modulated RFID (Radio Frequency Identification) system where transmitter and receiver use the identical frequency. A method using a switch, a mixer, a BPF (band-pass filter), and an additional oscillator in the transmitter is proposed to improve the isolation between transmitter and receiver in an RFID system. The Proposed system up-converts the outgoing wave from a frequency different from the received signal and improves the isolation. The proposed method provided additional 20 dB improvement on the isolation.

On the Accuracy of RFID Tag Estimation Functions

  • Park, Young-Jae;Kim, Young-Beom
    • Journal of information and communication convergence engineering
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    • v.10 no.1
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    • pp.33-39
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    • 2012
  • In this paper, we compare the accuracy of most representative radio frequency identification (RFID) tag estimation functions in the context of minimizing RFID tag identification delay. Before the comparisons, we first evaluate the accuracy of Schoute's estimation function, which has been widely adopted in many RFID tag identification processes, and show that its accuracy actually depends on the number of tags to be identified and frame size L used for dynamic frame slotted Aloha cycles. Through computer simulations, we show how the accuracy of estimation functions is related to the actual tag read performance in terms of identification delay.

Self Localization of Mobile Robot Using UHF RFID Landmark

  • Kwon, Hyouk-Gil;Kim, Min-Sik;Ryu, Je-Goon;Shim, Hyeon-Min;Lee, Eung-Hyuk
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.1606-1611
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    • 2005
  • The goal of this paper is to develop a self localization of mobile robot using UHF RFID landmark. We present landmark, a location sensing archetype system that uses UHF Radio Frequency Identification (UHF RFID) technology for locating objects inside buildings. The major advantage of landmark is that it improves the overall accuracy of locating objects by utilizing the concept of reference tags. Based on experimental analysis, we demonstrate that passive UHF RFID is a viable and cost-effective candidate for indoor location sensing. We conduct a series of experiments to evaluate performance of the positioning of the landmark System. In the standard setup, we place RF Reader which has two antennas and 25 tags in our lab. This research uses the assumption-based coordinates (ABC) algorithm[3] for determining the localization of robot. Also, we show how Radio Frequency Identification (UHF RFID) can be used in robot-assisted indoor navigation for the visually impaired. The experiments illustrate that passive UHF RFID tags can act as reliable landmark that trigger local navigation behaviors to achieve global navigation objectives.

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Analyses of Security and Privacy Issues in Ultra-weight RFID Protocol

  • Kim, Jung-Tae
    • Journal of information and communication convergence engineering
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    • v.9 no.4
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    • pp.441-446
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    • 2011
  • Radio frequency identification (RFID) tags are cheap and simple devices that can store unique identification information and perform simple computation to keep better inventory of packages. Security protocol for RFID tags is needed to ensure privacy and authentication between each tag and their reader. In order to accomplish this, in this paper, we analyzed a lightweight privacy and authentication protocol for passive RFID tags.