仪表技术与传感器
儀錶技術與傳感器
의표기술여전감기
Instrument Technique and Sensor
2015年
9期
106-110
,共5页
无线传感器网络%多Sink节点%布局优化%多目标模型
無線傳感器網絡%多Sink節點%佈跼優化%多目標模型
무선전감기망락%다Sink절점%포국우화%다목표모형
WSNs%multiple sink nodes%optimal deployment%multi-objective model
针对传感器网络中单Sink节点存在近距离传感器节点过早死亡、传输路径单一、传输延迟及节点失效等问题,提出了一种综合考虑网络布局和网络能耗的多Sink节点部署优化新方法。首先,为缩短Sink节点到传感器节点的传输距离,建立了加权距离最小化模型;同时,为均衡网络能耗,建立了无线传感器网络能耗最小化模型。然后,根据所建立多Sink节点部署优化模型的特点,使用加权系数将多目标模型单目标化,并设计了上升启发式算法进行求解。实验结果表明,提出的多Sink节点部署优化方法既能保证网络布局最优,又进一步均衡了网络能量消耗,有助于延长无线传感器网络的生命周期。
針對傳感器網絡中單Sink節點存在近距離傳感器節點過早死亡、傳輸路徑單一、傳輸延遲及節點失效等問題,提齣瞭一種綜閤攷慮網絡佈跼和網絡能耗的多Sink節點部署優化新方法。首先,為縮短Sink節點到傳感器節點的傳輸距離,建立瞭加權距離最小化模型;同時,為均衡網絡能耗,建立瞭無線傳感器網絡能耗最小化模型。然後,根據所建立多Sink節點部署優化模型的特點,使用加權繫數將多目標模型單目標化,併設計瞭上升啟髮式算法進行求解。實驗結果錶明,提齣的多Sink節點部署優化方法既能保證網絡佈跼最優,又進一步均衡瞭網絡能量消耗,有助于延長無線傳感器網絡的生命週期。
침대전감기망락중단Sink절점존재근거리전감기절점과조사망、전수로경단일、전수연지급절점실효등문제,제출료일충종합고필망락포국화망락능모적다Sink절점부서우화신방법。수선,위축단Sink절점도전감기절점적전수거리,건립료가권거리최소화모형;동시,위균형망락능모,건립료무선전감기망락능모최소화모형。연후,근거소건립다Sink절점부서우화모형적특점,사용가권계수장다목표모형단목표화,병설계료상승계발식산법진행구해。실험결과표명,제출적다Sink절점부서우화방법기능보증망락포국최우,우진일보균형료망락능량소모,유조우연장무선전감기망락적생명주기。
Wireless sensor network ( WSNs) with a single sink node has some disadvantages of the quickness of consuming energy on the critical path , the singleness of routing algorithm , and the invalidation of the sink node .To solve these problems , a novel multi-objective programming approach for multiple sink nodes in WSNs was developed in this paper .In our approach , multi-ple sink nodes were not only deployed ,but energy consumption was also considered as the uncertain parameters .Our multi-objec-tive model attempted to minimize the weighted distance from sensor nodes to sink nodes , at the same time to balance WSNs energy consumption through minimizing the objective of consuming energy .Considering the global evaluation of two objectives , a compro-mise programming model was formulated and solved to obtain a non-dominating compromise solution with ascent algorithm .Experi-ment results show that the proposed approach can keep both optimal deployment of multi -sink nodes and balance of energy con-sumption in WSNs , which can prolong the lifetime of the network .