A Long-Distance RF-Powered Sensor Node with Adaptive Power Management for IoT Applications
| Autor: | Davide Fabbri, Diego Masotti, Eleonora Franchi Scarselli, Luca Perilli, Roberto Canegallo, Aldo Romani, Massimo Del Prete, Alessandra Costanzo, Matteo Pizzotti, Michele Dini |
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| Přispěvatelé: | Matteo, Pizzotti, Luca, Perilli, Massimo del, Prete, Davide, Fabbri, Roberto, Canegallo, Michele, Dini, Diego, Masotti, Alessandra, Costanzo, Eleonora Franchi, Scarselli, Aldo, Romani |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Power management
RF power transfer energy harvesting Engineering rectenna wireless power transfer 02 engineering and technology rectifying antenna lcsh:Chemical technology Biochemistry Article Maximum power point tracking Analytical Chemistry wireless sensor network 0202 electrical engineering electronic engineering information engineering Electronic engineering lcsh:TP1-1185 Wireless power transfer Electrical and Electronic Engineering wireless sensor networks Instrumentation adaptive power management nano-power DC/DC converter ultra-low power sensor node business.industry Node (networking) 020208 electrical & electronic engineering RF power amplifier 020206 networking & telecommunications micro-power circuit Atomic and Molecular Physics and Optics Rectenna Internet-of-Thing Sensor node power management business Wireless sensor network |
| Zdroj: | Sensors; Volume 17; Issue 8; Pages: 1732 Sensors, Vol 17, Iss 8, p 1732 (2017) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s17081732 |
| Popis: | We present a self-sustained battery-less multi-sensor platform with RF harvesting capability down to −17 dBm and implementing a standard DASH7 wireless communication interface. The node operates at distances up to 17 m from a 2 W UHF carrier. RF power transfer allows operation when common energy scavenging sources (e.g., sun, heat, etc.) are not available, while the DASH7 communication protocol makes it fully compatible with a standard IoT infrastructure. An optimized energy-harvesting module has been designed, including a rectifying antenna (rectenna) and an integrated nano-power DC/DC converter performing maximum-power-point-tracking (MPPT). A nonlinear/electromagnetic co-design procedure is adopted to design the rectenna, which is optimized to operate at ultra-low power levels. An ultra-low power microcontroller controls on-board sensors and wireless protocol, to adapt the power consumption to the available detected power by changing wake-up policies. As a result, adaptive behavior can be observed in the designed platform, to the extent that the transmission data rate is dynamically determined by RF power. Among the novel features of the system, we highlight the use of nano-power energy harvesting, the implementation of specific hardware/software wake-up policies, optimized algorithms for best sampling rate implementation, and adaptive behavior by the node based on the power received. |
| Databáze: | OpenAIRE |
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