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This paper proposes a reader antenna, improving the inductive coupling with a small coil whatever its position or orientation against the reader antenna. Sub-coils are inserted and the turn number is optimized in order to improve efficiency of the inductive coupling in the case of HF RFID volume detection in keeping constant the magnetic energy generated by the reader.
This paper concerns an application of magnetic coupling RFID technology at 13.56 MHz (HF band) for tracking devices such as instruments. The tag size is defined to be ergonomically small compared to the hand, and fixed inside a maximum surface of 1 cm2. The case of multiple detections is considered, and consequently the reader surface of control is considered wide enough to include several instruments...
HF RFID transponders with capacitive coupling were made. They have two electrodes for capacitive coupling instead of a coil for magnetic induction coupling. Prototypes of capacitive coupling transponder communicate via a medium composed of conductors and/or dielectrics normally existing around us. In HF band, since the human body is also a conductor and a dielectric, RFID communication can be carried...
We present the design of a UHF RFID tag-sensor to automate the process of counting sharps used in the operating theater with the end goal of minimizing the chance of accidentally leaving a sharp inside the patient post surgery. We demonstrate how our sensor is capable of differentiating between three popular sharp sizes by correlating sharp size to a change in the signal response of the RFID tag....
The paper presents the development process of the 3D game based board with the use of RFID technology. The digital wireless RFID technology as a way of realisation of gamification paradigm was presented. The measurements were performed in different scenarios: one without the additional material and the second one with plywood between devices. The study focused on 3D board game implementation and measurements...
The paper presents the application of the RFID technology in the international system of the European Union (EU) border control. The proposed architecture consists of computerized portable units (equipped with specialized devices for data acquisition) carried by border officers and the server cloud infrastructure. Among other details of the proposed system (such as QR codes or images of people trying...
Ultra-wideband (UWB) impulse radio is a technology ideally suited for centimeter-level localization, and especially attractive because of the possibility to employ backscattering tags which can be made energy autonomous. Still, achieving such accuracy in localizing backscattering tags is challenging and requires careful consideration in implementing the signal processing chain. This paper presents...
This paper presents a localization system for objects tagged with UHF-RFID passive tags, where the reader is attached to a drone. The system implements the phase-based SARFID technique to locate static tags with respect to a UHF-RFID reader attached to a commercial drone. The reader antenna trajectory is achieved through a Global Positioning System. The bi-dimensional tag position is estimated with...
The application of Artificial Neural Networks (ANNs) to discriminate tag actions in UHF-RFID gate is presented in this paper. By exploiting Received Signal Strength Indicator values acquired in a real experimental scenario, a multi-layer perceptron neural network is trained to distinguish among tags incoming, outgoing or passing the RFID gate. A 99% accuracy can be obtained in tag classification by...
We present the results of a new Ultra High Frequency (UHF) Radio Frequency Identification (RFID) system using multiple, distributed, phased array antennas for interrogating RFID tags over wide areas. The system makes use of signals multicast over two steerable antenna arrays with phase diversity to overcome fading. The system is compared to two other methods for driving the two arrays; one with the...
The majority of UWB positioning systems rely on the first path component time of arrival measurements. In most systems, positioning algorithms assume that obtained results correspond to direct path component related to the distance between transmitter and receiver. Unfortunately, indoors, first path signal component is often delayed or even blocked by the walls or elements of interior design, what...
This paper describes a solution based on Near Field Communication technology to improve Passenger Experience, i.e. the fruition of services and assets, in airports. This system has been developed within the PITAGORA project, a research program co-financed by the Regional Government of Tuscany, Italy, focusing on the development of an innovative integrated platform for airport management. The proposed...
The feasibility of a passive RFID sensing network for real time monitoring of tire vulcanization is here investigated for the first time. The system is aimed at measuring temperature inside rubber compounds all along the process such to optimize the curing procedure and reduce time and energy waste. The considered network comprises RFID sensor tags inserted into the tire and one ore more reader antennas...
This paper presents a new technique to locate a device moving along a known trajectory, when it is equipped with an UHF RFID reader. The proposed technique exploits the phase of consecutive readings of a single stationary tag positioned near the device trajectory, within the reader coverage area. To increase the length of the monitored path where the reader can be effectively localized, the localization...
The aim of this paper is to present a 3D positioning system based on phase measurements of the signals backscattered by the UHF RFID tags of a uniform circular array (UCA). Apart from the location estimations, the system is also able to provide the 2D attitude (azimuth and elevation) of the UCA. This complementary information can be very useful in some applications such as in loading operations at...
The performance of near-field RFID systems can be impacted by the different orientations between the RFID antenna heads and the credentials with which the antenna must interact. Interacting with shelved library books is challenging since the RFID inlays are orthogonal to the plane which is most desirable for RFID interactions. There are a number of commercial solutions that operate by inserting a...
The paper is connected with the method for examining the reliability of the RFID-tagged document management system. The system is composed of computers, where the software for supporting processes of the RFID-tagged documents was installed. Besides, the system cooperates with many other elements of the secret office (cabinets, sluices, photocopiers, desks). The examination of the reliability of the...
Nowadays, indoor localization systems gain more and more attention, as demand for the services employing data on the indoor position of the objects and people is growing. There are many techniques used for position calculation. The most popular rely on measurements of radio wave propagation times. Most of the systems' architectures consist of localized tags and fixed-positioned anchor nodes. Knowledge...
This paper focuses on tracking and objects identification by means of High Frequency magnetic coupling RFID (Radio Frequency IDentification) at 13, 56 MHz. The coil of the used RFID tags corresponds to 1.9% of the reader coil surface (120×160 cm2). To increase the size ratio between the two coils, we proposed the use of multiple twisted loops antenna. The reader antenna is consequently divided into...
The UHF Radiofrequency Identification technology offers nowadays a viable technological solution for the implementation of low-level environmental monitoring of connected critical infrastructures to be protected from both physical threats and cyber attacks. An RFID sensor network was developed within the H2020 SCISSOR project, by addressing the design of both hardware components, that is a new family...
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