Research Accurately Calibrate The Mechanism Of The Clock In The Internet Of Things

There are some technologies like big data storage, cross-routing clocksynchronization, because the clock is not synchronized resulting data logger wirelesssensor data fusion and other issues in the Internet of Things that have made the analysis anddesign of the system model becomes very complicated. Therefore, Precise clock calibrationmechanism has important theoretical significances. Meanwhile, Wireless access networksare evolving to IP direction, Architecture for network that it mixed different types ofnetwork brought new challenges to time calibration mechanism.Firstly, This article analyzed the clock synchronization mechanism and tried tosummarize regular pattern, then focud on IEEE1588v2protocol to analysis in the Internetof Thing, especially apply for the network layer. This paper based on IEEE1588v2protocolanalyzes the PTP time Mechanism method about accuracy in a wired network and wirelessnetwork. We used NS2simulation software based on extended experiments to establish thesimulation model to achieve a wired network and wireless PTP networks. There weredesigned two experiments, one was that we compared synchronized level both the averagepacket delay stamp size examine ways in different networks, the experimental data showedthe overall cable network time synchronization performance was better than the wirelessnetwork. Another experiment invested that the timestamp values changed when a packetpassed through the different nodes, we could analysis the calibration accuracy and averageconvergence in the PTP algorithm. By comparison found that the use of wireless networksPTP algorithm accuracy than conventional Ethernet network; curve gradient from the pointof view, the algorithm has a PTP wired network time error correction capability is relativelymore quickly reduced to ms level. Finally, the experimentally validated protocol used inthe production process of steel components to meet the real-time control of each productionworkshop production lines and the various processes and thus a more timely and efficientscheduling purposes.