Large-scale deployed sensor networks have a wide range of possible applications, including a number of types of environmental monitoring. The primary challenge to designing deployable sensor network applications lies in the difficulty of building and managing testbeds. The main contribution of this work is a sensor network management system, called SignetLab, that allows the control, visualization, and reprogramming of deployed sensor networks. This system facilitates rapid testing and debugging of sensor network applications on deployed networks. To show the ability of our management system, we also present the design of a fire alarm application for sensor networks. This application was designed and tested through the use of the SignetLab management system.
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