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An arm-based network clock synchronization system and method

A network clock and synchronization system technology, applied in the field of electronic information, can solve the problems of low cost and asynchronous distributed system clock, and achieve the effect of low cost, accurate timing, and guaranteed accuracy

Inactive Publication Date: 2017-12-08
WUHAN UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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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  • An arm-based network clock synchronization system and method
  • An arm-based network clock synchronization system and method
  • An arm-based network clock synchronization system and method

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Embodiment Construction

[0038] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Such as figure 1 Shown, a kind of network clock synchronous system based on ARM, it comprises GPS satellite timing module, NTP server, hardware timing module, client module;

[0040] GPS satellite timing module, used to obtain satellite time information;

[0041] The NTP server is used to analyze the obtained satellite time information, extract and convert it into a standard format time; it is also used to obtain time information according to the hardware timekeeping module;

[0042] The hardware timekeeping module is used for NTP to obtain the latest update time of the server, and keep a reliable count of time to ...

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Abstract

The invention discloses an ARM-based network clock synchronization system and method. The system includes the following: a GPS satellite timing module, which acquires satellite time information through satellites in a short time; an NTP server, which uses an embedded processor with an operating system as The server converts the received time message into a standard format and calibrates the local time; the hardware timekeeping module is used to store the latest calibration time of the NTP server; the client module obtains the server time and synchronizes the local system time. The invention provides simple implementation, provides simple, fast and accurate time calibration for distributed clocks in the local area network, reduces the delay due to Internet time in the propagation process, and ensures the accuracy of time synchronization of all terminal devices in the local area network. It has the characteristics of reasonable design, high reliability, strong environmental adaptability, small size, convenient use, and low power consumption.

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, access congestion and dela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 尹勇孙千国夏烨许冬容胡佳洁张亚苹彭超前肖萌赵驰徐俊成
Owner WUHAN UNIV OF TECH
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