在无线传感器网络中,网络的连通性不仅是保障网络正常通信的基础,更是网络数据融合、定位、拓扑控制等技术实现的前提条件.合理部署网络节点可以有效提高传感器网络的覆盖范围,保证其他技术有效应用与实现.在室内复杂环境下,为确保部署的传感器节点更好地覆盖监控区域,本文提出一种通过设置节点通信半径和最小发送功率的方法来确保网络连通.并采用图例理论分析网络连通性,通过设置节点通信半径实现最大覆盖率;分析对数损耗模型并确定模型参数,在保证网络覆盖率的前提下设置节点最小发送功率.仿真结果表明,所提出的方法能够有效提高网络覆盖范围与网络连通性.%In wireless sensor networks,the connectivity of the network is not only the basis for ensuring the communication of the network,but also the prerequisite for the realization of data fusion,location,topology control and other technologies. The reasonable deployment of network nodes can effectively improve the coverage of sensor networks and ensure the ef-fective application and implementation of other technologies. In order to ensure the coverage of network in the complex indoor environment,this paper proposes a method to ensure net-work connectivity by setting the communication radius and the minimum transmission pow-er . This design used graph theory to analyze the network connectivity and achieved the max-imum coverage by setting the communicate radius of nodes. It analyzed logarithmic distance path loss model and determined parameters. The minimum transmission power of nodes is set on the premise of guaranteeing network coverage. The simulation results show that this method can effectively improve the network connectivity.
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