Model of minimum cost heterogeneous sensor network
异构传感器网络代价最小模型

This paper proposed a minimum cost model for the base station to gather data from local area in the heterogeneous sensor network within a square unit. The amount and energy parameters of two node types were acquired under the conditions of coverage and connectivity and sharp cutoff. It was proved that the energy consumption per unit period of cluster nodes in the annular region increased as the width of the annular region increased when the width of the annular region was not longer than the radius of the center circle. At the same time, the quantity of additional nodes needed in the center circle was also calculated. In experiments, the parameters of approximate and exact solutions were compared, and they tallied well.