【摘要】 该文通过对传感器网络监测域内节点能耗建模与节点在区域中的理想网络部署建模,从理论上分析了传感器网络最优部署时各处位置的节点能耗变化趋势,并总结出了EC能耗曲线。以J-S im为仿真平台,仿真试验提取了特定条件下测试区内不同位置的节点能耗并依此绘制成曲线与EC曲线拟合,验证了EC曲线的有效性。将依据EC曲线计算出的网络寿命上限与文献[9]提出的网络寿命上限结果比较可知,由该模型得到的网络寿命上限以及节点能耗曲线更加逼近真实网络。更多还原

【Abstract】 As one of data-gathering applications in Information technologies,Wireless Sensor Networks(WSNs) rivet more and more people’s attention.A key challenge is achieving energy cost distribution of nodes for WSNs with any scale and in any general regions so that node deployment density can be made to prolong system’s lifetime.This paper sets up an energy cost behavior model for sensor nodes and a network deployment model for WSNs with nodes deployed ideally in monitored region.EC curve is proposed to reveal the energy cost of nodes on different locations.Simulations are carried out to pick up energy cost of nodes on different positions on the preconditions that all the nodes are deployed in interested region with uniform distribution so as to validate the availability of the EC curve.The derived network lifetime approaches the real network.更多还原