中文摘要：

针对无线传感器网络中基于移动sink的节能数据收集问题，综合考虑传感器节点和移动sink的能耗，提出一种基于能量受限的移动sink数据收集策略（DC-ECMS）。DC-ECMS包括3个阶段：①采用图论中最小支配集思想构建sink的驻留点；②采用蚁群算法规划sink访问驻留点的巡游路径；③sink沿规划路径周期性进行数据收集。仿真实验结果表明，DC-ECMS可有效延长网络寿命和提高网络的能量利用率，并且可扩展为多个sink进行数据收集，进一步延长网络寿命。

英文摘要：

The issue of energy-efficient data collection based on mobile sink in wireless sensor net- works is studied. Considering synthetically the energy consumption of sensor nodes and mobile sink, a data collection strategy based on energy-constrained mobile sink （DC-ECMS） is proposed. DC-EC- MS consists of three phases ： ① a number of sojourn points are selected through minimum dominating set in graph theory; ② a cruise path for mobile sink is planned through ant colony algorithm （ACA） ; ③ the sink will travel along the planned path periodically and collect data at each sojourn point. The simulation results show that DC-ECMS can effectively prolong the network lifetime and im- prove the energy efficiency; moreover, it can be extended to multiple sinks for data collection, pro- longing the network lifetime further.