An Underwater Sensor Network with DBMS Concept
Abstract
In this paper is a concept of a technique of sending and receiving message below water. There are several ways of employing such communication but the most common is using hydrophones. Under water communication is difficult due to factors like multi-path propagation, time variations of the channel, small available bandwidth and strong signal attenuation, especially over long ranges. In underwater communication there are low data rates compared to terrestrial communication, since underwater communication uses acoustic waves instead of electromagnetic waves. we present a novel platform for underwater sensor networks to be used for long-term monitoring of coral reefs and fisheries. The sensor network consists of static and mobile underwater sensor nodes. The nodes communicate point-to-point using a novel high-speed optical communication system integrated into the TinyOS stack, and they broadcast using an acoustic protocol integrated in the TinyOS stack. The nodes have a variety of sensing capabilities, including cameras, water temperature, and pres- sure. The mobile nodes can locate and hover above the static nodes for data mining and they can perform network maintenance functions such as deployment, relocation, and recovery. In this paper we describe the hardware and soft- ware architecture of this underwater sensor network. We then describe the optical and acoustic networking protocols and present experimental networking and data collected in a pool, in rivers, and in the ocean. Finally, we describe our experiments with mobility for data mining in this network.
Keywords: Mobile sensor networks, underwater networks, data mining
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ISSN (Paper)2224-5774 ISSN (Online)2225-0492
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