Wireless sensor nodes (WSNs) are typically powered by batteries, which results in a maintenance burden and cost, especially in Internet of Things (IoT) scenarios that install many devices. For these applications, the ideal node must be set-and-forget, maintenance-free, and low-cost. This paper proposes a self-powered wireless sensor platform, implemented through a photovoltaic cell and with LoRa connectivity. An off-the-shelf amorphous silicon photovoltaic cell of 58.1 mm ×48.6 mm is used to harvest and sense indoor ambient light with a limit of detection of 200 lux. The system embeds a 2 mF storage capacitor that every cycle stores enough energy to send a maximum of 30 bytes data packet when the LoRa transmitter is configured with a spreading factor of 7, a bandwidth of 125 KHz, and an output transmitted power of 14 dBm. Experimental measurements performed in an urban area have shown that a 20 bytes data packet is received correctly and reliably at the maximum distance of 560 m.

Roberto La Rosa, Lokman Boulebnane, Daniele Croce, Patrizia Livreri, Ilenia Tinnirello (2023). An Energy-Autonomous and Maintenance-Free Wireless Sensor Platform with LoRa Connectivity. In An Energy-Autonomous and Maintenance-Free Wireless Sensor Platform with LoRa Connectivity (pp. 461-464) [10.1109/ICRERA59003.2023.10269437].

An Energy-Autonomous and Maintenance-Free Wireless Sensor Platform with LoRa Connectivity

Roberto La Rosa;Lokman Boulebnane;Daniele Croce;Patrizia Livreri
;
Ilenia Tinnirello
2023-01-01

Abstract

Wireless sensor nodes (WSNs) are typically powered by batteries, which results in a maintenance burden and cost, especially in Internet of Things (IoT) scenarios that install many devices. For these applications, the ideal node must be set-and-forget, maintenance-free, and low-cost. This paper proposes a self-powered wireless sensor platform, implemented through a photovoltaic cell and with LoRa connectivity. An off-the-shelf amorphous silicon photovoltaic cell of 58.1 mm ×48.6 mm is used to harvest and sense indoor ambient light with a limit of detection of 200 lux. The system embeds a 2 mF storage capacitor that every cycle stores enough energy to send a maximum of 30 bytes data packet when the LoRa transmitter is configured with a spreading factor of 7, a bandwidth of 125 KHz, and an output transmitted power of 14 dBm. Experimental measurements performed in an urban area have shown that a 20 bytes data packet is received correctly and reliably at the maximum distance of 560 m.
2023
9798350337938
Roberto La Rosa, Lokman Boulebnane, Daniele Croce, Patrizia Livreri, Ilenia Tinnirello (2023). An Energy-Autonomous and Maintenance-Free Wireless Sensor Platform with LoRa Connectivity. In An Energy-Autonomous and Maintenance-Free Wireless Sensor Platform with LoRa Connectivity (pp. 461-464) [10.1109/ICRERA59003.2023.10269437].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/616573
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