Time keeping method of a time synchronization device

Abstract

The invention discloses a time keeping method of a time synchronization device, comprising: A. receiving the first second pulse signal; B. obtaining the frequency of the output signal after the frequency multiplication of the constant temperature crystal oscillator, so as to obtain the internal working frequency; C. using the first second pulse signal The one-second pulse signal is used as the reference, and the internal working frequency is adjusted by using the PID algorithm; D. According to the adjusted internal working frequency, a second-second pulse signal synchronized with the first-second pulse signal is generated. The present invention introduces the PID algorithm, uses the PID strategy to adjust the internal working frequency, and generates the second second pulse signal according to the adjusted internal working frequency, and the generated second second pulse signal not only has the advantages of good stability and high synchronization , and its implementation process is simple, and it can realize high-precision punctuality at a relatively low cost. The timekeeping method of the time synchronization device of the invention can be widely applied in the technical field of communication.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a timekeeping method for a time synchronization device. Background technique [0002] Time and frequency are closely related to human life and play an important role in the construction and development of the national economy. Each country has established its own time reference (standard time) and time-keeping agencies to issue or deliver accurate time to users. This process of delivering accurate time is called time service. [0003] Enterprises such as electric power and communications need to use time synchronization technology based on satellite positioning systems (Beidou and GPS systems). The time source of the satellite time synchronization device depends on the satellite positioning system, but environmental factors such as weather may cause time signal deviation and short-term interruption of the satellite signal, which seriously affects the timing accuracy of the...

AI Technical Summary

Problems solved by technology

But the higher the clock stability, the higher the cost: the atomic clock frequency is stable, but the price is higher; the constant temperature crystal oscillator is cheaper, but the stability is lower (factors affecting the constant temperature crystal oscillator mainly include ambient temperature and operating voltage)

[0004] To sum up, the existing time synchronization device has a high cost to achieve high-precision punctuality, and cannot achieve high-precision punctuality at low cost.

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