Enable sustainable sensor networks with non-contact charging: efficient deployment of energy hubs
by Yifan Wu; Peng Liu; Jian Qiu; Guojun Dai
International Journal of Sensor Networks (IJSNET), Vol. 18, No. 3/4, 2015

Abstract: The lifetime of a wireless sensor network (WSN) imposes a limitation on its practical usage when sensor nodes are battery powered. Besides energy-harvesting, non-contact recharging of node battery, such as wireless charging and light-reflection charging, is a promising technique to obtain sustainable functioning for WSNs. To achieve that, the current research along this direction has mainly suggested two kinds of methods: by traversing all sensor nodes using mobile charger(s), or by deploying fixed chargers in the network. For both methods, negligible charging time is often assumed. In this paper, we consider to achieve non-contact recharging of sensor nodes using fixed chargers, also called energy hubs. In particular, we consider non-negligible charging time and propose a heuristic method to find the minimum number of energy hubs to be deployed in the network such that all sensor nodes are guaranteed to stay operational. Extensive simulations are performed to verify the effectiveness of the proposed solution.

Online publication date: Sun, 05-Jul-2015

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Sensor Networks (IJSNET):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com