移动汇聚节点用于无线传感网络信息采集,可以提高网络能效性,延长网络生命期.研究了四轴飞行器携带移动汇聚节点,该节点可采集地面无线传感网数据.通过分析汇聚节点空中移动特性,探讨了低功耗无线数据采集时,移动轨迹、速率和高度与移动汇聚节点能够发送的数据量的之间的理论约束条件.在满足约束条件前提下,提出基于数据量局部最优化策略,用以控制移动汇聚节点移动路径.在仿真环境中,详尽分析了这种数据采集策略下逗留时间与移动轨迹、速度和高度等之间的关系,为这类应用奠定了理论基础.%Mobile sink for wireless sensor network is an efficient way to prolong the network lifetime. We studied a scenario where the mobile sink node is located in a quadcopter which is in charge of data gathering from the wireless sensor network. After analyzing the properties of mobile sink node during flying, we gave the theoretical constraints for the mobile sink node in terms of mobile trace, velocity and height for the low power wireless communication. According to these constraints, we proposed the data amount-based local optimal mobile trace control approach for the mobile sink node,so as to gather from the sensor network efficiently. Explicit simulations show that the proposed approach is feasible, which provides a theoretical basis for such applications.
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