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In this paper, we present a disaster-scale mapping and energy-efficient alerting scheme that can be used in disaster monitoring environments that are prone to node failure and destruction due to the occurrence of disasters, and are generally deprived of GPS capabilities and or availability. The mapping scheme is able to provide a distributed mean of monitoring and reporting disaster's location which...
In wireless sensor networks used as a social infrastructure, urgent information, such as a fire alarm, is needed to be transmitted as fast and reliably as possible. In this paper, we propose design methodology for a sensor network which provides preferential control of urgent information over other non-urgent information. In our methodology, several simple mechanisms which function in different spatial...
We propose a data gathering scheme for a wireless sensor network constructed in a building in this paper. Our system consists of gateway nodes that have a power supply and wired connection to a monitoring PC, and sensor nodes that operate on a battery. Sensor information is periodically gathered from all sensor nodes via gateway nodes to a monitoring PC. To conserve energy, the emission of sensor...
The wireless sensor network (WSN) is one of the most promising technologies which helps making our society safe, secure, and comfortable. A WSN as a social infrastructure must transmit critical information faster and more reliable than other information. In this paper, we propose an autonomous and distributed mechanism, called an "assured corridor" mechanism (ACM), for fast and reliable...
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