无线可充电传感器网络的移动充电问题研究  

Research on Mobile Charging Issues on Wireless Rechargeable Sensor Networks

作　　者：刘创[1,2] 王珺[1,2] 吴涵[1,2] 

机构地区：[1]南京邮电大学宽带无线通信与传感网技术教育部重点实验室,江苏南京210003 [2]南京邮电大学江苏省无线通信重点实验室,江苏南京210003

出　　处：《计算机技术与发展》2016年第3期162-167,共6页Computer Technology and Development

基　　金：国家自然科学基金资助项目(61401234)

摘　　要：能量问题一直是无线传感器网络(Wireless Sensor Network,WSN)研究的关键之一。WSN中节点能量由容量有限电池提供,当节点能量状态较低时需要及时进行更换以确保整个网络的有效性,在复杂网络环境下人为地进行电池更换难以实现。无线传输技术的出现有效解决了这一难题。因此采用携带高电容量的移动节点,通过无线传输的方式给普通节点进行能量补充的无线可充电传感器网络(Wireless Rechargeable Sensor Network,WRSN)成为当前研究的热点。用移动电池车携带可进行无线能量传输的高能量电池装置进入传感器网络中,通过达到某一项性能的最优制定对应的移动充电策略,对低能量的节点进行能量补充。进一步的研究发展可以根据实际的网络场景,在充分考虑各项约束的提前下提出综合的最优移动充电策略。Energy is a key issue in wireless sensor networks. The energy of nodes is provided by limited battery energy. It is necessary to replace battery to make sure the availability of networks when the node nearly uses up its power. But the location of nodes is unreachable on complicated network environment. As a newly emerged technology, wireless transfer effectively addresses this problem. Therefore, it focuses on adopting a mobile node with high capacity of energy and using wireless transfer technique to recharge low energy nodes on WRSN. A mobile vehicle is used to carry the fully charged battery with high capacity, which can recharge general nodes by wireless energy transfer,and most charging strategies only achieve the optimal with a certain goal. Aiming at the limitation of traditional charging strategies, future research and development should be based on the real network environment, taking multiple constrains into consideration, then coming up with the comprehensive optimal mobile charging solution.

关 键 词：无线传感器网络 无线能量传输 移动充电 网络生命期 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]