Clock taming method, time code monitoring device and time synchronization system
A technology of clock taming and preset time period, applied in time division multiplexing systems, radio-controlled timers, instruments, etc. Failure analysis and judgment, the effect of improving accuracy
Pending Publication Date: 2022-01-28
CHINA ELECTRIC POWER RES INST
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Problems solved by technology
[0005] In view of this, the present invention proposes a clock taming method, a time code monitoring device and a time synchronization system, aiming at solving the problems of short data intervals and large jitters of the existing clock taming
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[0040] For detailed and complete disclosure of the present description with reference now to the drawings exemplary embodiments of the present invention, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, these embodiments are provided invention, and will fully convey the scope of the invention to those skilled in the art. For the exemplary embodiments represented in the drawings in terms are not intended to limit the present invention. In the drawings, the same elements / components the same reference numerals.
[0041] Unless otherwise stated, terms used herein (including technical and scientific terms) has a generally understood meaning of those skilled in the art. In addition, it is understood that, in order to commonly used dictionaries define the term, the context should be understood as its related fields have the same meaning, and should not be interpreted in an idealized or overly formal sense.
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The invention discloses a clock taming method, a time code monitoring device and a time synchronization system, and the method comprises the steps: obtaining a third clock error sequence of each sampling moment in a preset time period; performing abnormal value elimination and filtering on the third clock error sequence at each sampling moment in a preset time period to obtain clock error adjustment information; obtaining a frequency deviation value between the local frequency reference source and the frequency reference center based on the clock error adjustment information; obtaining the frequency adjustment amount of the local frequency reference source according to the frequency deviation amount; and sending the frequency adjustment amount to a local frequency reference source for controlling the local frequency reference source to realize adjustment of the local reference signal. Through the clock taming method provided by the embodiment of the invention, the influence of a satellite system and multiple paths of an environment can be weakened, low-jitter and long-interval data to clock taming is realized, and the stability and the accuracy are improved.
Description
Technical field [0001] The present invention relates to the field timing, particularly, to a method for tame clock, the time code and the time synchronization system monitoring device. Background technique [0002] With the popularization of network information, each service node of the grid and there is a demand for the system time clock service system requirements made higher, in which each node in a distributed network clock error required to maintain a certain accuracy and synchronization . At present, the commonly used power frequency or GPS disciplined clock Compass with standard production system, there is a problem: [0003] 1, the conventional or GPS disciplined clock Compass, generally using a 1 second interval Compass or GPS data, the time interval is too short, low stability; [0004] 2, the existing Compass or GPS disciplined clock, due to the impact of atmospheric transport models, satellite orbit and so brought inadequate construction, large data jitter, low accura...
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IPC IPC(8): H04J3/06G04R40/04G04R20/06G04R20/04
CPCH04J3/0638G04R20/04G04R20/06G04R40/04
Inventor 赵莎孟静陈昊宋晓卉林繁涛卢达徐英辉杨玉博耿爱玲
Owner CHINA ELECTRIC POWER RES INST