In the practical application of large-scale photovoltaic module monitoring, adopting wireless sensor network (WSN) technology is a method worth researching. With increasing nodes in the wireless sensor network, widely existing clock skew, increased geometrically, is bringing about greater energy consumption. Due to the random distribution of nodes, in order to improve the transmission efficiency and reduce the computational load of the coordinator, the node processor needs to the use edge computing for preliminary analysis. This paper puts forward an improved energy-efficient reference broadcast synchronization algorithm (ERBS). This algorithm firstly calculates the average phase offset of nonadjacent nodes in the network after receiving a message. It then uses the least square method to solve the clock skew to achieve high-precision synchronization of the whole network. Simulation results show that compared with RBS, the time synchronization precision of ERBS is greatly improved and synchronization times are greatly reduced, decreasing energy consumption significantly.

中文翻译：

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WSN中基于边缘计算的ERBS时间同步算法

在大规模光伏组件监控的实际应用中，采用无线传感器网络（WSN）技术是值得研究的方法。随着无线传感器网络中节点的增加，广泛存在的时钟偏斜（几何上增加）带来了更大的能耗。由于节点的随机分布，为了提高传输效率并减少协调器的计算负荷，节点处理器需要使用边缘计算进行初步分析。提出了一种改进的节能参考广播同步算法（ERBS）。该算法首先计算接收到消息后网络中不相邻节点的平均相位偏移。然后使用最小二乘法来解决时钟偏移，以实现整个网络的高精度同步。仿真结果表明，与RBS相比，ERBS的时间同步精度大大提高，同步时间大大减少，能耗大大降低。