Implementation of fault-tolerance WSN time synchronization algorithm for coal mine
Cui Lizhe · Journal of PLA University of Science and Technology · 2015
According to the requirements of high precision and strong robustness among nodes,especially the characteristics of low fault-tolerance,an algorithm based on fault-tolerance was presented to enhance the synchronization accuracy for coal mine.Combined with the complex underground environment,the strategy using dynamic election of time reference node and avoiding repeated sending of packets was used to enhance network scalability.And the new nodes added into network can quickly converge with the new synchronization algorithm.With the analysis of flooding time synchronization protocol(FTSP)algorithm,the new algorithm introduces the residual analysis theory of probability and statistics to improve the linear regression algorithm and judge the errors so as to enhance the fault-tolerance of wireless sensor network(WSN)synchronization algorithm and the stability of the synchronous network.Experiments show that the synchronization accuracy is enough to meet the requirements of underground localization.