Secondary clock synchronous time precision detection device and method

Abstract

The invention relates to a secondary clock synchronous time precision detection device. The device comprises a time stamp storage module, a detection module and a network communication interface, wherein the detection module is connected with the time stamp storage module and the network communication interface respectively; the network communication interface is used for receiving time stamps T2 and T3 sent by a secondary clock and sending the time stamps T2 and T3 to the detection module; the time stamp storage module is used for storing time stamps T1 and T4 in a secondary clock synchronizing process; and the detection module is used for calculating a time offset theta between primary and secondary clocks according to the T1, T2, T3 and T4 so as to judge the precision of secondary clock synchronous time. In addition, the invention also provides a synchronous time precision detection method by using the detection device. The technical scheme of the invention has the advantages of small feedback time error, high feedback precision and the like and is applied to occasions having a relatively high requirement on secondary clock time precision, such as nuclear power stations, high-speed rails, stations, airports and the like.

Description

technical field [0001] The invention relates to a master and master clock system, in particular to a device and method for detecting the synchronization time accuracy of the slave clocks. Background technique [0002] At present, in the existing master clock system, the master clock receives the international standard time (UTC standard time), and can synchronize the time of the slave clock according to the request of the slave clock, but the master clock cannot know whether the synchronized time of the slave clock is Accurate, so the accuracy of the synchronization time of the secondary clock cannot be guaranteed, resulting in a large error in the synchronization time of the secondary clock, making the secondary clock system unsuitable for places that require high accuracy of the secondary clock time, such as nuclear power, high-speed rail, stations, airports, etc. . [0003] Network Time Protocol NTP (Network Time Protocol) is a standard Internet protocol for time synchro...

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Problems solved by technology

[0002] At present, in the existing master clock system, the master clock receives the international standard time (UTC standard time), and can synchronize the time of the slave clock according to the request of the slave clock, but the master clock cannot know whether the synchronized time of the slave clock is Accurate, so the accuracy of the synchronization time of the secondary clock cannot be guaranteed, resulting in a large error in the synchronization time of the secondary clock, making the secondary clock system unsuitable for places that require high accuracy of the secondary clock time, such as nuclear power, high-speed rail, stations, airports, etc.

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