Die-hard sensor network: robust wireless sensor network dedicated to disaster monitoring

Authors:
Toshiaki Miyazaki;Daiki Shitara;Yuji Endo;Yuuki Tanno;Hidenori Igari;Ryouhei Kawano
Affiliations:
The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan;The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan;The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan;The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan;The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan;The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan
Venue:
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication
Year:
2011

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Abstract

In this paper, a new type of wireless sensor network system, called die-hard sensor network, is described. The system can automatically monitor a disaster-hit region by scattering many sensor nodes in the region. To realize the system, three new mechanisms have been developed. If a sensor node is unable to perform certain functions, the first mechanism---function alternation---enables its neighboring sensor nodes to automatically take over these functions. Once our system is deployed, it performs uninterrupted surveillance of the disasterhit region through this mechanism even if some of the sensor nodes suddenly die. The second mechanism is a multi-sink and multi-hop data transfer protocol that realizes reliable data transfer. The third mechanism is sensor node localization. The locations of almost all scattered sensor nodes can be estimated using only a few anchors, i.e., nodes whose positions are known. In this paper, we explain each novel mechanism, present some evaluation results, and introduce a prototype system that employs the mechanisms.