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Lifetime of wireless sensor nodes is a big challenge in bridge structural monitoring as these nodes may be deployed inside the bridges. In this situation, it is infeasible to replace batteries or harvest solar and wind energy. To prolong lifetime, vibration energy begins to be utilized to replenish energy for sensor nodes. In this study, a vibration energy harvester based on Micro Fiber Composite...
Power consumption is one of the most critical challenges in wireless sensor networks, as sensor nodes are powered by batteries in most situations. Wireless communication is the main source of power consumption in a sensor node. Many energy aware protocols and algorithms have been proposed in the past few years. The basic idea of these methods is to reduce the data that nodes exchange and the time...
Security is a critical factor to deploy large scale wireless sensor networks. Limited resource constraints, such as computation power, program memory, SRAM, and energy budget, present a big challenge to implement existing cryptography algorithms. In this paper, we evaluate the overhead of comprehensive cryptography algorithms suitable for wireless sensor networks. All the factors that may affect algorithm...
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