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Erschienen in:
2007 | OriginalPaper | Buchkapitel
Design and Implementation of a System for Environmental Monitoring Sensor Network
verfasst von : Yang Koo Lee, Young Jin Jung, Keun Ho Ryu
Erschienen in: Advances in Web and Network Technologies, and Information Management
Verlag: Springer Berlin Heidelberg
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In this paper, we propose a system architecture for handling and storing sensor data stream in real-time to support the spatial and/or temporal queries besides continuous queries. We exploit a segment-based method to store the sensor data stream and reduce the managed tuples without any loss of information, which lead to the improvement of the accuracy of query results. In addition, we offer a method to reduce the cost of join operations in processing spatiotemporal queries by filtering out the list of irrelevant sensors from the query range before making the join operation. We then present a design of the system architecture for processing spatial and/or temporal queries. Finally, we implement a climate monitoring application system.