为了提高在无线传感器网络中太阳能电池供电节点的能量利用效率，研究了太阳能电池与无线传感器网络节点能量之间的供求关系。采用传感器网络节点能量的自适应供求算法，构建了在标准光强下太阳能电池输出功率与传感器网络节点所耗功率的自适应平衡模型。实验结果表明：该模型体现了太阳能电池与网络节点能量的自适应供求关系，确保了传感器节点长期稳定地工作，尽可能地延长了传感器网络的生存周期，为无线传感器网络节点能量的设计提供了理论依据。

To improve the energy efficiency of solar cells in wireless sensor networks nodes, the energy relationship between solar cells and the wireless sensor networks nodes is studied. An adaptive algorithm is adopted to ensure the wireless sensor networks work normally at different sunlight intensities. An energy model is designed that reveals the energy relationship between the output power of the solar cells and the power of nodes working normally at a standard sunlight intensity. The experimental results show that the model represents the adaptive energy relationship between the solar cells and the nodes, ensures that the nodes work stably in a long term, and extends the lifecycle of the sensor networks as long as possible. The model has important guiding significance for wireless sensor networks designation.

国家973计划资助项目（2002CB410803）；国家专项基金资助项目（337）