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This paper presents the development of a system for realizing interactive exhibitions in the context of a science and technology center. The core functionality of the system is provided by a positioning subsystem comprised of a fixed infrastructure of transmitters and a sensor worn by a user. The operating principle of the positioning system is based on inductive coupling of resonators. Information...
In this paper, a technique for accurate estimation of the moment of magnetic dipole is proposed. The achievable accuracy is investigated, as a function of measurement noise affecting estimation of magnetic field cartesian components. The proposed technique is validated both via simulations and experimentally.
This contribution briefly shows the main characteristics of a system that combines power and data transfer in a single device; in particular, the Wireless Power Transfer channel is used also as data transfer when it is embedded into a Power Line Communication environment. This is achieved by the use of specifically designed filters and has the main advantage of retaining the data transfer capability...
A Moving Field Inductive Power Transfer (MFIPT) system for wireless inductive power supply of electric vehicles on the road is described. To minimize losses only those primary coils located below the secondary coil of a vehicle are excited. The dynamics, the power balance of the MFIPT system, and the costs for the implementation of the system are discussed.
The influence of the environmental configuration on AC magnetic distance-measurement systems, which are based on inductive coupling of tuned resonators, is experimentally analyzed. The main aspects that affect accuracy in such systems are the conductivity of the terrain and the presence of metallic materials near the resonators. It is shown that such aspects are frequency-dependent, and a tradeoff...
A methodology for improving efficiency of wireless power transfer (WPT) systems, derived from the concept of conjugate image impedances, is presented. For accuracy reasons, enhancement of the system efficiency through adjustment of its geometry parameters is based on full-wave electromagnetic (EM) simulation models. Fast WPT system design is realized by means of surrogate-based optimization exploiting...
In this paper, a ranging technique based on inductive coupling between resonating coils is presented. The theoretical background is discussed, and a practical implementation is illustrated and experimentally validated. It is shown that the proposed technique, implemented using off the shelf components, features both a good range and a fair resilience to multipath, being suitable for indoor positioning...
Electromagnetic Wireless Power Transmission (WREL) can be achieved by using resonant coils coupled via their magnetic fields; these resonant coils must be, in addition, properly coupled to the source and load. By using a simple, yet rigorous, equivalent network, we introduce a computer-aided design procedure to reach the maximum efficiency for a given value of the resonators quality factor and for...
Electromagnetic wireless resonant energy links (WREL) can also be realized by using resonant coils coupled via their evanescent fields. In this paper we propose a new structure for wireless power transfer and illustrate the similarities and the differences of CAD of wireless power transfer with resonant coils and RFID working at 13.56 MHz. An experimental set-up for wireless power transfer with resonant...
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