Design and implementation of data management subsystem in Environmental Sensor Networks

“Environmental Sensor Networks (ESNs)” are a subset of sensor networks which are specifically tuned to an environmental application. In general, there are three main subsystems in the whole infrastructure of ESNs: (1) Data acquisition subsystem; (2) Data communication subsystem; (3) Data management subsystem. Compared with two former ones, the research on data management subsystem has not been attached more importance. However, with the number of diverse sensors is increasing, integrating, sharing and visualizing the monitored data among the isolated sensor networks has become a critical problem. Thus, this paper introduces the design and implementation of data management subsystem in ESNs. The design is based on SOA (Service Oriented Architecture), for the monitored data is distributed, multiple sourced, and heterogeneous. RIA (Rich Internet Application) is the main developing mode to implement the data management subsystem. If it is combined with the whole infrastructure of ESNs efficiently, the data management subsystem can obtain more information directly, and visualize them more quickly.