| With the development of science and technology,the wireless sensor networks(WSN)technology has made great progress and shown a broad development foreground.But the wireless sensor network nodes generally use the button battery to provide.Because of the limit of energy,it makes a difference of the reliability of the network.what's more,a lot of use and replacement of the battery is both to improve the cost and polluted environments.Therefore,how to use the finite energy of the nodes is a key issue in the research of wireless sensor networks.At present,scholars at home and abroad aim at this issue,most of them research some optimization algorithms to balance the energy consumption of each code in order to improve life-cycle of network.With the rapid development of wireless power transfer(WPT)technology in recent years,it provides the best solution for the wireless power supply of wireless sensor networks and improving life-cycle of network.In this paper,aimed at the limit energy and the low of utilization rate of WSN,an integrated wireless sensor network with energy can be wireless transmitted in be-direction is studied.The wireless power transfer network model is established,the energy transmission characteristic of the nodes and the related network attribute are analyzed.The ant colony algorithm based on the weight preference is proposed to optimize the energy link.With the algorithm,an optimal link is obtained.In addition,the three basic wireless transmission models is summarized.Then from the physical layer of the wireless sensor network,the specific model of the circuit is given,and the power control strategy of the node is analyzed.the specific model of the circuit is given,and the power control strategy of the node is analyzed.Firstly,the research of wireless sensor network,wireless power transfer and wireless power transfer network is inducted in detail.The paper also analyze the working principle,protocol stack and network topology of wireless sensor networks.Therefore the basic working principle of wireless power transfer system is introduced.The compensation structure of system is analyzed emphatically.Finally,the wireless power transfer sensor network model is established,and the similarities and differences between the traditional network are compared and analyzed.Then,the paper studies the wireless power transfer sensor network model,and introduces the node attribute and network running mechanism in detail.the linkoptimization mathematical model of network is established.According to the characteristics of the network,transmission efficiency,node residual energy and transmission delay are adopted to measurement index.the ant colony algorithm based on weight preference is used to optimize the wireless power transmission link.The optimal link is obtained.What's more,aiming at the problem of power control research algorithm for sensor nodes in net layer or data link layer at present The power control of the wireless power transfer sensor network is studied by physical layer.The topology of energy bi-directional transmission based on WPT technology is analyzed and the power control is carried out for the topology.the power control of the node is realized by the phase shift PWM control strategy,and the power control formula of the three kinds of transmission modes are carried out.Finally,Finally,the paper verifies the ant colony algorithm based on weight preference through matlab programming.The Effectiveness and feasibility is shown by the result.The experiment platform is built to verify analysis of bi-directional transmission of the LCL topology circuit.the three power control transmission modes are also verified.By the depth study of the application of WPT technology in WSN,it provides a new solution for the node energy problem of wireless sensor networks.It can effectively promote the development of wireless sensor network technology and wireless power transmission application technology development.this paper can provide a theoretical basis and reference. |
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