In order to save energy consumption, improve network performance and prolong the life cycle of communication network, a reasonable relay selection algorithm for energy collection wireless sensor networks is proposed. Firstly, taking solar wireless sensor network as an example, the energy consumption and solar energy state of sensor nodes are mathematically analyzed. Then, the cooperation probability is optimized with the interruption probability threshold as the constraint, and the relay nodes participating in the cooperative transmission are controlled to save the energy of cooperative transmission in the system. According to the solar energy status, network energy balance, signal-to-noise ratio and outage probability of the relay node, a multi criteria relay selection strategy is adopted to select the optimal node. Compared with the comparison algorithm, this algorithm can save at least 47.1% power consumption and prolong the network lifetime by 25.9%.

为了节约能耗、提高网络性能、延长通信网络的生命周期，提出了一种合理的能量采集无线传感器网络中继选择算法。首先以太阳能无线传感器网络为例，对传感器节点的能耗和太阳能状态进行数学分析。然后，以中断概率阈值为约束优化协作概率，控制参与协作传输的中继节点，以节省系统中协作传输的能量。根据中继节点的太阳能状态、网络能量平衡、信噪比和中断概率，采用多准则中继选择策略选择最优节点。