Research On Wireless Power Transfer-based Energy-balanced Strategies For Internet Of Things

In the application of large-scale networking in Internet of Things, limited capacity battery power was generally used in the sensors, which not only large number but also inconvenience replaced. Easily death of the sensors because the uneven energy consumption, severely reduce the life cycle of the network. At the same time, some expensive sensors were abandoned due to the power supply reasons. Therefore, how to balance the use of network energy, extend the life of the individual sensor and overall network has become a key issue in the study of the Internet of Things.Aimed at the problem of limited energy of sensor nodes in the Internet of Things, based on the magnetic resonance coupled wireless power transfer technology, this paper proposed a new energy balanced routing algorithm (WPTRA) that get a new direction on the research of the energy balance problem in the Internet of Things.First, for the conflict on the transmission efficiency and distance of the wireless power transfer technology, this paper put forward a relay wireless power transfer network, and its network structure. Then, propose the bidirectional energy transmission among sensor nodes mode and relay wireless power transfer node structure based on the resonance mode.Second, combine the traditional energy balanced strategy in the Internet of Things, raise the selection strategies based cluster head sensor node energy level, which guarantee higher energy node to be the cluster head node, another by constrained cluster head election notice broadcast radius, to ensure that the head sensor node can be uniformly distributed with the coverage area of the network.Third, based on the relay wireless power transfer network and selection strategies based cluster head sensor node energy level, get out the energy balanced routing algorithm based on wireless power transfer technology, that the adjacent high energy sensor nodes can be the energy supplement when a sensor node in the network energy below the preset critical energy value TE-MIN.Finally, simulate the WPTRA proposed in this paper by the simulation tool MATLAB, and compare with LEACH protocol and RELCRP protocol.