Harvesting-throughput trade-off for wireless-powered smart grid IoT applications: An experimental study
IEEE International Conference on Communications
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Pehlivanoglu, E., Ozger, M., Cetinkaya, O., & Akan, O. (2018). Harvesting-throughput trade-off for wireless-powered smart grid IoT applications: An experimental study. IEEE International Conference on Communications, 2018-May https://doi.org/10.1109/ICC.2018.8422487
© 2018 IEEE. Sensor nodes, one of the most crucial elements of Internet of Things (IoT), sense the environment and send their observations to a remote Access Point (AP). One drawback of sensor nodes in an IoT setting is their limited battery supply. Hereby, energy harvesting (EH) stands as a promising solution to reduce or even completely eliminate lifetime constraints of sensors with exploitation of available resources. In this paper, we propose an electric-field EH (EFEH) method to enable battery-less execution of sensor-based IoT services for Smart Grid (SG) context. For this purpose, for the first time in the literature, harvestable energy through EFEH method is investigated with a transformer room experimental set-up. Our experiments reveal that 40 mJ of energy can be harvested in a period of 900 sec with the proposed EFEH method. Building on this energy profile, we define a throughput objective function θ for a «harvest-then-transmit» type system model, to shed light on the harvesting- throughput trade-off specific to IoT-assisted SG applications. Numerical results disclose non- trivial relationships between optimal harvesting period T-H, optimal transmission period T-T and critical network parameters such as node-AP hop distance, path loss exponent and minimum reporting frequency requirement.
External DOI: https://doi.org/10.1109/ICC.2018.8422487
This record's URL: https://www.repository.cam.ac.uk/handle/1810/287033