Low-power-consumption time calibration method for indoor and outdoor master-slave clock satellite timing system

Abstract

The invention relates to the field of a clock satellite timing system, and discloses a low-power-consumption time calibration method for an indoor and outdoor master-slave clock satellite timing system. The invention provides a method for performing low-power-consumption time calibration between an outdoor master clock and an indoor slave clock in allusion to an indoor and outdoor master-salve clock satellite timing system comprising an outdoor master clock and an indoor slave clock. The low-power-consumption time calibration method not only can enable the indoor slave clock to acquire master clock local RTC time, which is from the outdoor master clock and capable of being synchronous to the satellite standard time, in a wireless communication mode and update the slave clock local RTC time according to the master clock local RTC time, realize automatic satellite timing for the indoor clock and greatly improve the time keeping accuracy of the indoor clock, but also can reduce the power consumption of the outdoor master clock and the indoor slave clock in the whole satellite timing process on the basis of meeting timely satellite timing, reduce the information interaction cost and facilitate long-term unattended arrangement of the outdoor master clock and the indoor slave clock.

Description

technical field [0001] The invention relates to the field of clock satellite timing systems, in particular to a low-power time calibration method for indoor and outdoor master-slave clock satellite timing systems. Background technique [0002] At present, most electronic clocks are quartz clocks that use quartz crystals to provide travel time frequency. Due to the relationship between the output frequency of quartz crystals and ambient temperature, the travel time accuracy of quartz clocks is low. When electronic clocks have travel time errors, users need to manually adjust the time, which is extremely inconvenient to use. . With the continuous development of modern timing technology and the continuous improvement of people's requirements for timing accuracy, the maximum timekeeping error of ordinary quartz clocks of tens of seconds per month can no longer meet people's requirements for time accuracy. [0003] Current quartz clocks lack an accurate, stable, reliable, and wi...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the existing problem that the indoor clock cannot be used for satellite time service, the present invention provides a low-power time calibration method for indoor and outdoor master-slave clock satellite time service systems

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