Intelligent multi-time source automatic optimizing and negotiating timing time synchronous system and timing method

Abstract

The invention relates to a multi-time source automatic optimizing and negotiating timing time synchronous system and a timing method and belongs to the technical field of the time synchronous system and primary-secondary clock system. The timing time synchronous system comprises a plurality of time source modules, wherein the time source modules are in communication connection with a central control CPU (Central Processing Unit) and a clock rear panel interface through a bus; each of the time source modules comprises a time source card, a programmable logic device and a time source CPU; and the time source CPU is in communication connection with the central control CPU5. The timing method comprises the following steps: 1) measuring the precision of the time source card by each programmable logic device; 2) utilizing the central control CPU to select the optimal time source for timing; 3) arraying the remained time source modules according to the precision; and 4) detecting the output of each of the time source modules through suboptimal time source modules, and carrying out timing by switching the time source of the suboptimal time source modules to the central control CPU when the timing system is in fault. The backup scheme of high-speed programmable logic devices and multiple time sources is adopted in the invention; the time source with the best signal quality is automatically selected for timing the system; and the effective measuring mode, the intelligent preferential selection and the intelligent switching between the time sources are realized.

Description

technical field [0001] The invention relates to an intelligent multi-time source automatic optimization, negotiation time synchronization system and a timing method, belonging to the technical field of time synchronization systems and master clock systems. Background technique [0002] The current time service products basically provide a 1+1 backup method to back up the time source, and there is a slow mutual detection response between the time sources, and there is no effective measurement mechanism for the signal quality between the two time sources. Switching is slow, there will be "glitch" phenomenon during the switching process, and the phenomenon of wrong seconds during the switching process. This has a very large impact on places with high time precision. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings of the above-mentioned prior art, to provide a method that can quickly realize the state detection of each time...

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This has a very large impact on places with high time precision

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