ARM-based network clock synchronization system and method

Abstract

The invention discloses an ARM-based network clock synchronization system and method. The system comprises a GPS (Global Positioning System) satellite time service module, an NTP (Network Time Protocol) server, a hardware time service module and a client module, wherein the GPS satellite time service module is used for acquiring satellite time information in a short time through a satellite; the NTP server is an embedded processor with an operating system, and is used for converting a received time message into a standard format and calibrating local time; the hardware time service module is used for storing time which is recently calibrated by the NTP server; and the client module is used for acquiring server time, and synchronizing local system time. The system and the method are easy to implement. Through adoption of the ARM-based network clock synchronizing system and method, simple, convenient, rapid and accurate time calibration is provided for a distributed clock in a local area network; the phenomena of delay of Internet time in a transmission process and the like are avoided; and the accuracy in time synchronization of all terminal equipment in the local area network is ensured. The system and the method have the characteristics of reasonable design, high reliability, high environment suitability, small size, convenience in use, low power consumption and the like.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to an ARM-based network clock synchronization system and method. Background technique [0002] Network clock synchronization is a more serious problem in network measurement. Clock out of synchronization will cause delay, jitter and measurement accuracy related to time information. [0003] In practical applications, many real-life processes require high-precision time, such as: bells ringing in various examination rooms for major exams, numerous computer monitoring systems in the power system, protection devices, fault recorders, etc., time synchronization must be within seconds level or even within milliseconds. At present, the synchronization time mainly depends on the network time protocol NTP (network time protocol) server on the Internet. However, as more and more devices are connected and the distance between the servers is far away, the access congestion and ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a clock synchronization system and method in a local area network with low cost and accurate time service to solve the problem of clock asynchrony in distributed systems in view of the defects in the prior art

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