Time Synchronous Batch Calibration Algorithm Based on Wireless Sensor Networks

Abstract

In most wireless sensor network time synchronization algorithms in the past, common nodes typically synchronize the clock with a reference node (or root node), which is easily disturbed by unexpected events. This paper mainly studies a time-synchronized protocol for batch-calibrated sensor networks (BC-TPSN) algorithm. The algorithm is based on the TPSN algorithm and is mainly corrected for the time-frequency offset of TPSN. In the inter-level synchronization phase, synchronization between the levels is accomplished using a synchronization mechanism of two-way message exchange. In the intra-level synchronization phase, the improved two-way message exchange synchronization mechanism is used to complete the synchronization of the internal nodes of the hierarchy. In this paper, the time-base synchronous batch calibration method based on wireless sensor network nodes is applied to highway infrastructure condition monitoring, which can simultaneously calibrate and unify the time base of nodes and improve the performance of precise synchronous networking.