An Event-based Component Model for Wireless Sensor Networks: a Case Study for River Monitoring

Jó UeyamaDaniel Roy HughesNelson MatthysWouter HorréWouter JoosenChristophe HuygensSam Michiels

This paper examines an event-based component model for wirelesssensor networks called LooCI (Loosely-coupled Component Infrastructure) anddiscusses an application of LooCI for river monitoring in creeks that flow throughS~ao Carlos. Our sensor network application which is based on LooCI monitorsflood, pollution and human tampering and warns potential stakeholders wheneverthey are at risk (e.g. of floods). Our pollution monitoring system is usedto inspect rivers and issues a warning whenever the condition of water reachesan unacceptable level. In addition, our depth sensor monitors rivers and isused to predict potential floodings. Finally, our three dimensional accelerometerdetects any improper vibration caused by tampering with the deployed node.Our component model for sensor networking environments has a novel looselycoupledbinding model which is particularly designed to support intermittentconnections between the components. This reflects the nature of wireless sensornetworks that are often subject to unreliable networking.

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