Abstract
RFID tags are used for different purposes. One of the major problems to be addressed, particularly for monitoring purposes, is their limited power autonomy. Tags must perform different tasks with limited power consumption and their batteries capacities are often too low, even if low power consumption techniques are implemented. In these operational situations tags should be kept in operation for long periods of time and the common solution is to go directly where they are installed and recharge them manually or change their batteries; alternatively, when possible, small photovoltaic (PV) panels may be adopted. This paper proposes a feasibility analysis of how it is possible to recharge a multipurpose RFID tag using a UAV (Unmanned Aerial Vehicle), which is programmed to go above the tags and recharge them. This possibility is analyzed from an energetic point of view assuming to recharge a Wireless Sensor Network (WSN) using a common commercial UAV adequately instrumented using the wireless power transfer technique.
Highlights
Wireless Sensor Networks (WSNs) and RFID tags have attracted an increasing attention in recent years because of the large number of potential applications and of their power to perform different operations
Acquired data are sent by the RFID tags to the Access Point (AP) of the WSN once a day (Table 2); Figure 1
In the present work the energy consumption of a RFID tag designed for environmental monitoring operation is evaluated
Summary
Wireless Sensor Networks (WSNs) and RFID tags have attracted an increasing attention in recent years because of the large number of potential applications and of their power to perform different operations. Bertoldo ufacturers and researchers to study realize and deploy new RFID tags, often connected each other in a Wireless Sensor Network (WSN). (EST) has been involved in different industrial and research projects about developing new experimental WSNs and designing RFID tags for different purposes with particular focus on environmental monitoring operations. Different techniques have been proposed to provide RFID tags with the capacity to recharge themselves through different sources of energy They basically exploit the photovoltaic (PV) technology, the piezo-electric technology, and in recent years the wireless power transfer. A feasibility analysis is proposed to recharge the tags using a UAV with a specific and well suited version of wireless power transfer. All the analysis is made by an energetic balance point of view, without entering into details for what concern the electronic implementation
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