中文摘要：

在无线传感器网络（WSNs）的应用中,数据融合中心的数量及其位置对于网络性能和寿命有很大的影响。提出了一种仅依赖局部连接信息的分布式算法,通过在WSNs中模拟特定情景下的热传导过程建立虚拟标量场;通过观察梯度线和极值点,确定数据融合中心的数量和位置。仿真结果表明：本方法确定的融合中心位置与最优位置接近,能够满足应用需要。

英文摘要：

In application of wireless sensor networks（ WSNs）,number of data fusion centers and their location have great impacts on performance and lifetime of the network. Propose a distributed algorithm only depends on local connection information,virtual scalar field is constructed by simulating heat conduction process in specific circumstances; by observing gradient lines and extrema,determine the number and positions of data fusion centers.Simulation results show that the suggested positions of fusion centers are near the optimal,and can meet application requirement.