High-speed railway synchronous timing method and device based on Beidou navigation system and PTP

Abstract

The invention belongs to the railway data communication field and especially relates to a high-speed railway synchronous timing method and device based on a Beidou navigation system and PTP. The method and the device of the invention have the advantages that a Beidou satellite navigation system with independent research and development and proprietary intellectual property rights in China is takenas a standard time information source and has independent, open, compatible, advanced, stable and reliable characteristics; and FPGA, ARM and DAC chips are used to form a taming processing unit so asto realize time unification between the high-precision system devices of a PTP network, an FPGA+ARM minimum system and the DAC chip are used to form the taming processing unit, a special crystal vibration calibration algorithm is cooperated, crystal vibration stability is improved by 3 orders of magnitude and network timing accuracy is improved by more than one order of magnitude.

Description

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AI Technical Summary

Benefits of technology

This patented device uses beidiars (Beiad) satellites for precise location tracking purposes. It also includes an integrated circuit that can process data from multiple sources at once without any interference or errors between them. These devices have unique advantages such as being stable even over long periods of use, providing accurate clock signals, and having better control capabilities compared to other methods like GNSS systems.

Problems solved by technology

The technical problem addressed in this patents relates to ensuring accurate and reliable time measurement during high-power rail transportation monitoring operations such as overhaul inspections due to potential accidents caused by factors like power failures or malfunctions affecting other parts of the monitored area. Current solutions involve manual correction mechanisms based upon standards and lack effective communication protocols. Additionally, current approaches require multiple receivers per unit to implement both local and global time measurements simultaneously without any issues associated with incorrect transmission delays or non-uniform distribution across various locations within the overall framework.

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