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We present WRENSys, a system that allows for a low cost, rapidly deployable, large-scale and easy to maintain wireless mobile network, with minimal subject interference, to study contact networks of a population. We discuss our experiences with several hardware designs, including our new WREN sensor, base stations for charging and programming 2000 motes in parallel, software applications, and our...
Energy harvesting has been widely considered in many wireless applications, especially the wireless sensor networks. This paper develops a novel approach to energy-harvesting powered transmissions under arbitrary packet arrival process and strict deadline constraints over time-varying channels. It is shown that the problem can be formulated as a convex program. Relying on the specific structure of...
This paper describes recent work on the development of a wireless based remote monitoring system for renewable energy plants in Malawi. The main goal was to develop a cost effective data acquisition system that continuously presents remote energy yields and performance measures. A test bed comprising of a solar photovoltaic (PV) power plant has been set up at Malavi Primary School and a central management...
This papers deals with the new subject for education of mechatronics in Brno University of Technology. The new subject “Energy Harvesting” is prepared for students of the master study programme mechatronics. This subject presents overview of power sources for autonomous mechatronic applications. Nowadays power sources can be classified as energy reservoirs (batteries, super-capacitors, fuel cells,...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
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