Abstract: Because of the large energy consumption variance of the cluster head of traditional cluster tree wireless sensor network routing protocol, the number of surviving nodes and the residual energy of the nodes are less, and the service life of the wireless sensor network is reduced. So a cluster tree wireless sensor network routing protocol based on cloud security model is designed. By calculating the transmission energy consumption of clustered tree wireless sensor network when receiving and sending data, the cloud security model is used to obtain the uncertain relationship between various elements of the cloud security situation, and the comprehensive trust value of nodes are predicted. Based on the predicted results, the ant colony algorithm is adopted to obtain the optimal path of the partition nodes, and the clustered tree-shaped wireless sensor network routing protocol is completed. The experimental results show that the designed routing protocol cluster head energy consumption variance is small, the number of surviving nodes and the remaining energy of the nodes are more, and the amount of received data packets is 48.1% and 22.6% higher than other 2 kinds of protocols respectively. It can be seen that the routing protocol designed by this paper extends the service life of clustered tree wireless sensor network.

Key words: cloud security model, cluster tree wireless sensor network, routing protocol, node energy, service life