System and method for measuring network clock synchronization

Abstract

The invention discloses a system for measuring network clock synchronization, is applied to the communication and smart grid fields. The system comprises a pulse countering module, a time counting module, a clock reference module and a synchronization calculation module, wherein the pulse counting module calculates pulse frequency difference between a master clock and a slave clock, the master clock is synchronous with a remote reference clock, and the slave clock is synchronous with the master clock through a network so as to be synchronous with the remote reference clock; the time counting module measures the time difference between the master clock and the slave clock; the clock reference module inputs a reference clock, and the reference clock is synchronous with the remote reference clock; and the synchronization calculating module is used for calculating network clock synchronization parameters according to the time difference and the pulse frequency difference and outputting time synchronization parameters. The system disclosed by the invention can be used for evaluating the clock frequency synchronization accuracy and the time synchronization accuracy which can be reached at each node by an IEEE1588PTP (Institute of Electrical and Electronics Engineers 1588 Peer To Peer) clock synchronous network, and important reference data is provided for clock synchronization network optimization, and performance prediction on application and equipment depending on clock synchronization.

Description

technical field [0001] The invention relates to the fields of communication and smart grid, in particular to a system and method for measuring network clock synchronization. Background technique [0002] In an information society, many industries involving information control and exchange, such as large-scale application software in information networks, industrial production equipment control systems, especially information transmission networks, providing high-precision timing is the basic of these information technology application systems. Require. [0003] The clock synchronization / timing system based on IEEE-1588 PTP (Precision Time Protocol) is the latest clock synchronization technology based on the IP network. The timing system established based on the IEEE-1588 high-precision time protocol standard can be Provide nanosecond-level timing accuracy on existing local area networks. Compared with the existing timing system, the timing system based on IEEE-1588 has the...

AI Technical Summary

Problems solved by technology

If the master-slave clock synchronization accuracy cannot reach the expected accuracy, the performance of related information systems or equipment will be seriously affected, or even not work properly

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