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Environmental disasters often have costly and long-lasting effects. The speed and effectiveness of intervention depend on our ability to obtain timely information. In this paper, we propose an approach by which the event is “swarmed” by a set of mobile nodes that organize themselves around it and follow it as it moves. Our focus is on the distributed algorithms that are run on each of the autonomous...
Wireless sensor networks have become a promising technology in monitoring physical world. In many applications with wireless sensor networks, it is essential to understand how well an interested area is monitored (covered) by sensors. The traditional way of evaluating sensor coverage requires that every point in the field should be monitored and the sensor network should be connected to transmit messages...
In people-centric opportunistic sensing, people offer their mobile nodes (such as smart phones) as platforms for collecting sensor data. A sensing application distributes sensing 'tasks', which specify what sensor data to collect and under what conditions to report the data back to the application. To perform a task, mobile nodes may use on-board sensors, a body-area network of personal sensors, or...
We introduce a ubiquitous sensor network system, called U-FIPI, to monitor the early symptom of fire and intruder in indoor environment. Especially, this system adapts a novel approach to provide bidirectional location- awareness service between various mobile nodes and U-FIPI fixture nodes making it suitable for total service as a new concept of building management system.
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