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Multiple Stage Charging of Rechargeable Wireless Sensor Networks with a Directional Antenna

Authors:
Celso Luiz Barroso de Moraes
Dongsoo Har

Keywords: Charging Sensors; Clustering; Wireless Sensor Networks; IoT; Energy Harvesting

Abstract:
Wireless sensor networks are finding widespread use nowadays with the development of Internet of Things (IoT) technology. Due to their wireless nature, these devices use batteries as their main source of power. This creates the problem of continuity of operation, because batteries have a limited lifetime. Therefore, sensors capable of performing energy harvesting are preferred. The harvested energy can be acquired from ambient or dedicated sources consisting of mobile chargers. This paper deals with a charging scheme for randomly distributied sensor nodes using a mobile charger. The charging scheme consists of a multiple-stage charging procedure, in which in each stage an energy goal for the target sensor nodes is set up. For charging in the first stage, all the sensor nodes are classified into clusters. The theory of an inclusion circle is used in this process. By clustering based on the inclusion circle, a sensor node that is located around the center of grouped sensor nodes is highly likely to be selected as the cluster head. The mobile charger only concentrates about charging the cluster heads. The charging path of the moving charger is determined according to the locations of cluster heads. In the following stages, new clusters are formed based on the energy level of the sensor nodes in the system, and a new target energy goal is set up for them.

Pages: 81 to 85

Copyright: Copyright (c) IARIA, 2017

Publication date: September 10, 2017

Published in: conference

ISSN: 2308-4405

ISBN: 978-1-61208-580-7

Location: Rome, Italy

Dates: from September 10, 2017 to September 14, 2017