2007 IEEE International Conference on RFID最新文献

{"title":"Interconnected RFID Reader Collision Model and its Application in Reader Anti-collision","authors":"Shijie Zhou, Zongwei Luo, E. Wong, C. J. Tan, J. Luo","doi":"10.1109/RFID.2007.346171","DOIUrl":"https://doi.org/10.1109/RFID.2007.346171","url":null,"abstract":"While several readers are placed together for improving read rate and correctness, reader collision problems happen frequently and inevitably. High probability of collision not only impairs the benefit of multi-reader deployment, but also results in misreading in moving tags RFID applications. In order to eliminate or reduce reader collision, a current centralized reader network can be modeled as a collaborative network for readers to directly exchange information with other readers. Peer-to-peer computing technology is an emergent technology and is also a preferred candidate for this purpose. Hence, in this paper we present a collaborative peer-to-peer network for reader collision model. This Interconnected RFID Reader Collision Model (IRCD) is constructed upon the RFID reader collision so that it is a fully distributed and self-organized overlay network. IRCD can be used in a dense reader environment to exchange collision related information directly among readers without any central control or intermediation. To illustrate how to use IRCD, a query-hit rate-based dynamic anti-collision scheme is also proposed in this paper.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115420703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Exposure System for Evaluating Possible Effects of RFID on Various Formulations of Drug Products","authors":"H. Bassen, S. Seidman, J. Rogul, A. Desta, S. Wolfgang","doi":"10.1109/MCOM.2007.348673","DOIUrl":"https://doi.org/10.1109/MCOM.2007.348673","url":null,"abstract":"We developed hardware and software to perform exposure studies of the effects of certain radio frequency (RF) electromagnetic fields on solid and liquid pharmaceuticals and biologies. The RF fields generated by our systems are similar to those emitted by radio frequency identification (RFID) readers operating in the USA licensed high frequency (HF) and ultra high frequency (UHF) bands (13.56 and 915 MHz respectively). Our systems can expose drug samples (pharmaceuticals and biologies) to uniform electric (E) and/or magnetic (H) fields at levels that are much higher than those experienced by drugs near \"worst-case\" readers at a distance of 20 cm. Worst-case readers are defined as those that emit the highest allowable field strengths. Maximum field strengths near these readers were identified by measurements and computations of fields from commercial readers, and are extrapolated to the maximum allowable effective isotropic radiated power or field strength dictated by the U.S. Federal Communications Commission (FCC). The UHF system we developed included a commercially available circularly polarized antenna, a microwave generator with pulse modulation, a high power amplifier, a plastic foam enclosure, and fiber optic temperature monitoring probes placed in the drugs and the surrounding air. The HF system we developed included a specially designed Helmholtz coil pair, an HF signal generator with pulse modulation, an HF amplifier, an RF impedance matching device, and the same enclosure, and thermometry system as in the UHF system. Exposures can be performed for each drug in both its retail primary package (the smallest container produced with an RFID tag on it, e.g. bottle) and in 54 mm diameter culture dishes. The containers are suitable for exposing a wide variety of formulations of drugs (tablets, liquids, powers, capsules, creams, etc.). Exposures of drugs in culture dishes assure uniform induced electric fields and currents. In contrast, exposures in the primary containers (e.g. vials) allow studies that account for the interactions of RF fields with the packaging materials and container geometry. In our UHF system we can expose drugs to over 20 watts effective isotropic radiated power over 5 times the FCC limits. We evaluated H fields emitted by commercially available RFID readers. In our HF system we can expose drugs to at least 5 times the H field they produce at 20 cm from the reader. We can expose samples to 5 A/m in primary packaging or in special organ culture dishes with an outer concentric ring. The ring has inner and outer diameters of 32 mm and 55 mm respectively. Computer monitoring of power, drug temperature, and air temperature can be performed continuously during exposure. Surrounding air temperature is monitored at all times while in our lab (storage and exposure) and while shipped to drug laboratories for analysis.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"272 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122773906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and Implementation of RFID-Based Object Locator","authors":"T. Chou, J.W.S. Liu","doi":"10.1109/RFID.2007.346154","DOIUrl":"https://doi.org/10.1109/RFID.2007.346154","url":null,"abstract":"An object locator is a device designed to assist its user in finding misplaced household and personal objects in a home. This paper describes alternative designs and a proof-of-concept prototype of object locators based on the RFID technology. Advantages of such locators include extensibility and low maintenance. The numeric model provided here can be used to determine search time and energy consumption. The results of analysis based on the model can serve as design guides.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimum antenna coil structure for inductive powering of passive rfid tags","authors":"K. Fotopoulou, B. Flynn","doi":"10.1109/RFID.2007.346152","DOIUrl":"https://doi.org/10.1109/RFID.2007.346152","url":null,"abstract":"Radio frequency inductive links are becoming extensively used in wireless powering of embedded devices such as RFID systems and sensors. The design of RF coils for such links is often empirical and non optimal. Based on loop antenna theory we present a novel analytical model for near field inductive coupling incorporating misalignment of the RF coil system. Formulae are derived for the magnetic field at the tag coil when it is laterally and angularly misaligned from the reader and a new power transfer function presented. For the first time a near-field power transfer formula is suggested incorporating coil characteristics and misalignment factors. This novel power transfer function allows a comparison between different coil structures such as short solenoids, with air or ferromagnetic core, planar and printed spirals with respect to power delivered at the tag and its relative position to the reader. It is also possible to define the maximum degree of misalignment permissible in a given application. This analysis allows a formal design procedure to be established in order to identify the optimum coil geometry for RFID tags with respect to read range, angular, lateral displacement and operating frequency of the system.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"2005 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127664935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Overview of Near Field UHF RFID","authors":"Pavel V Nikitin, K. Rao, Steve Lazar","doi":"10.1109/RFID.2007.346165","DOIUrl":"https://doi.org/10.1109/RFID.2007.346165","url":null,"abstract":"In this paper, an overview of near field UHF RFID is presented. This technology recently received attention because of its possible use for item-level tagging where LF/HF RFID has traditionally been used. We review the relevant literature, discuss basic theory of near and far field antenna coupling in application to RFID, and present some experimental measurements.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"337 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Mixed-Signal Architecture of Channel Select Filtering with Oversampled ADC for Multi-Standard RFID Reader Receiver","authors":"Hin-Tat Chan, Wenting Wang, Chi Fung Lok, V. Lau, C. Tsui, H. Luong","doi":"10.1109/RFID.2007.346157","DOIUrl":"https://doi.org/10.1109/RFID.2007.346157","url":null,"abstract":"Radio frequency identification (RFID) technology is popular nowadays. One key challenge for RFID reader design is to receive the tag's weak signal in the presence of large interference signal from other readers on adjacent channels. In this paper, a highly reconfigurable mixed-signal architecture for channel select filtering with the help of oversampled delta-sigma modulator is proposed. It allows the reader to support multi-standard operating environment with less power consumption and silicon area for single-chip implementation compared with pure analog or digital channel select filtering approach. The challenge of the interference to the system is discussed. Detail descriptions of the architecture and some performance analysis are presented.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114692036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary Research on Indoor Mobile Robot Localization using Laser-activated RFID","authors":"Yu Zhou, Wenfei Liu","doi":"10.1109/RFID.2007.346153","DOIUrl":"https://doi.org/10.1109/RFID.2007.346153","url":null,"abstract":"Localization is a fundamental problem in autonomous mobile robot navigation. This paper introduces a novel localization technique for indoor mobile robot navigation using a collection of laser-activated RFID tags distributed in the indoor environment. The laser-activated RFID tag is designed and used as the artificial landmark in the proposed localization system. The robot localization is achieved through the combination of the stereo vision and RFID technologies and based on the principle of trilateration or triangulation. The localization system functions like an indoor GPS. Preliminary research shows that the proposed system is promising to provide a robust and accurate indoor localization method for mobile robots.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123672260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Standard CMOS voltage multipliers architectures for UHF RFID applications : study and implementation","authors":"E. Bergeret, J. Gaubert, P. Pannier","doi":"10.1109/RFID.2007.346158","DOIUrl":"https://doi.org/10.1109/RFID.2007.346158","url":null,"abstract":"An analysis of RFID multipliers architectures is presented. An analytic model of classical Mosfet multiplier is given, which permits to determine the main design parameters of this kind of circuit and their impacts on efficiency. Thanks to this study a new architecture is proposed in order to increase efficiency. The two multipliers are designed and implemented in the same standard 0.18 mum CMOS process. Measurements have been done and show functionality of the multipliers and improvement between the architectures.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127884268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a Passively-Powered, Programmable Sensing Platform for UHF RFID Systems","authors":"A. Sample, D. Yeager, P.S. Powledge, Joshua R. Smith","doi":"10.1109/RFID.2007.346163","DOIUrl":"https://doi.org/10.1109/RFID.2007.346163","url":null,"abstract":"This paper presents a wireless, battery-free, platform for sensing and computation that is powered and read by a standards compliant ultra-high frequency (UHF) radio frequency identification (RFID) reader. The WISP (wireless identification and sensing platform) includes a fully-programmable 16 bit microcontroller with analog-to-digital converter. The microcontroller firmware implements portions of the electronic product code (EPC) class 1 generation 1 protocol. When queried, the platform communicates arbitrary sensor data by emulating an EPC tag whose ID encodes the desired sensor data; the required 16-bit CRC is computed dynamically by the microcontroller. The RFID reader reports the received tag ID to application software which can interpret the information contained in the tag ID. The programmability of the WISP along with its implementation as a PCB allows for flexible integration of arbitrary low-power sensors. Furthermore, sensors are also exclusively powered from the RFID reader resulting in a completely battery free device. Sensors integrated into the WISP platform so far include light, temperature, and rectified voltage, and are shown experimentally to have an operating range of up to 4.5m. To the authors' knowledge, WISP is the first fully programmable computing platform that can operate using power transmitted from a long-range (UHF) RFID reader and communicate arbitrary, multi-bit data in a single response packet.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126453745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation and Analysis of Hospital Operations and Resource Utilization Using RFID Data","authors":"V. Boginski, I.K. Mun, Yuzhou Wu, K.P. Mason, Chuck Zhang","doi":"10.1109/RFID.2007.346169","DOIUrl":"https://doi.org/10.1109/RFID.2007.346169","url":null,"abstract":"We have constructed a simulation model of operations and resource utilization in a hospital. The inputs for the model have been derived from the data recorded over daily periods by RFID devices attached to hospital assets. The RFID data was obtained from the Capital Regional Medical Center in Tallahassee, FL. The raw data contains the information about the location of critical resources (e.g., IV pumps) recorded at 10-second time intervals. This data can be processed and used for inferring general statistical distributions of assets utilization time and rules characterizing the operations of a hospital. The ARENA simulation model was created to study the process of patient flow through the hospital system and identify potential sources and locations of delays associated with equipment utilization. The output of the ARENA model is analyzed. The primary observation is that the hospital system is functioning well under the scenarios of low or moderate patient load, and the most significant delays under the conditions of high patient load appear in a specific hospital unit (Labor and Delivery). We also identify the directions for further extensions and generalizations of the model with the ultimate goal of lowering operating expenses and improving patient safety.","PeriodicalId":369499,"journal":{"name":"2007 IEEE International Conference on RFID","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115337185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}