Expert Systems with Applications: An International Journal
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Wireless sensor networks have been widely used in many fields with the developments of the related techniques. But there are many problems in traditional single sink sensor networks. The energy of the sensors near the sink or on the critical paths consumes too fast causing unbalanced energy consumption. The routing algorithms mainly focus on the nearest path or minimum hops. The invalidation of the single sink node causes the breakdown of the whole sensor network. In this paper, through the analysis of the disadvantages of single-sink sensor networks, we propose the system architecture of multi-sink sensor networks and new routing algorithms ELBR (Energy Level Based Routing) and PBR (Primary Based Routing) in multi-sink sensor networks. Experiment results show ELBR and PBR have better performances than traditional methods and balance the energy consumption in sensor networks.