The lack of standardization and the continuous inflow of novel sensor network technologies have made their deployment the main factor of manpower consumption, considerably complicate the interconnection of heterogeneous sensor networks, and make portable application development a challenging and time-consuming task. To address these problems we propose our Global Sensor Networks middleware whic...

Source localization is an important task in wireless distributed sensor networking system. One of interest research area is to look for an optimal sensor deployment that can improve the performance of source detection and localization. In this paper, we will present an optimal sensor deployment based on Cramer-Rao Bound analysis for energy based acoustic source localization algorithm. Both theo...

Wireless Sensor Network is collection of tiny nodes in huge number called as sensor nodes. Each sensor node is equipped with nonrechargeable battery with limited power. Sensor nodes are deployed to gather useful information from the field to be monitored. Information collection in WSN should be in an efficient manner. When nodes are randomly deployed, all the nodes may not be used efficiently w...

Sensor nodes are low power, tiny, and computationally restricted microelectromechanical devices that usually run on battery. They are capable of communicating over short distances and of sensing information for specific purposes. In sensor networks, large amount of sensor nodes are deployed over a wide region. For secure communication among sensor nodes, secure links must be established via key...

In this paper, we propose a deployment algorithm for mobile sensor networks, based on fluid dynamics in three-dimensional circumstance. In our algorithm, the entire wireless sensor network is viewed as a fluid body while nodes as charged particles. In the algorithm, nodes tend to spread out into the deployment area automatically, driven by the interaction force between nodes and nodes, nodes an...

Efficient energy management schemes are essential in a wireless sensor network, since sensor nodes are battery powered. To subdue the energy problem, it is important to have efficient deployment and scheduling mechanisms. A heuristic to solve simple coverage problem, which schedules sensor activity so that all sensor nodes need not be active at the same time, is proposed. Results match the theo...

Motivated by the needs of precise carbon emission measurement and real-time surveillance for CO2 management in cities, we present CitySee, a real-time CO2-monitoring system using sensor networks for an urban area (around 100 square kilometers). In order to conduct environment monitoring in a real-time and long-term manner, CitySee has to address the following challenges, including sensor deploy...