WO2019010826A1

WO2019010826A1 - Low power consumption control method for satellite time service clock system, and clock system

Info

Publication number: WO2019010826A1
Application number: PCT/CN2017/103227
Authority: WO
Inventors: 颜美匀; 李斌; 沈卓; 杨珊; 蒋兴平; 罗庆; 彭勇
Original assignee: 成都天奥电子股份有限公司
Priority date: 2017-07-14
Filing date: 2017-09-25
Publication date: 2019-01-17
Also published as: CN107329399B; CN107329399A

Abstract

A low power consumption control method for a satellite time service clock system, and a clock system. The method comprises the following steps: (1) the clock system compensates for a travel time frequency according to a preset crystal frequency/temperature function relationship to compensate for the time difference of a clock caused by the temperature change, to improve the travel time accuracy; (2) a satellite receiving module (20) receives and decodes to obtain the satellite standard time; (3) synchronize the clock time according to the satellite standard time, measure the time difference between the clock time and the satellite standard time, and calculate the frequency accuracy of the clock crystal; (4) correct the preset crystal frequency/temperature function relationship according to the frequency accuracy of the crystal to compensate for the frequency aging of the travel time crystal so as to keep travel time accuracy; (5) adjust the receiving cycle of the satellite standard time according to the frequency accuracy of the crystal. The system can reduce the time and frequency of receiving a satellite signal as much as possible, reduce the power consumption of the clock system, and keep the clock with high-precision travel time.

Description

Low-power control method and clock system for satellite timing clock system

Technical field

The present invention relates to the field of satellite clock technology, and in particular to a low power control method and a clock system for a satellite timing clock system.

Background technique

At present, the electronic clock mainly uses a quartz crystal to provide a travel time frequency signal. Due to the inherent frequency/temperature characteristics of the crystal, the oscillation frequency varies with the ambient temperature; at the same time, the crystal also has a frequency aging characteristic whose frequency accuracy varies with the use time during use. Therefore, in the normal use of non-constant temperature environment, the frequency output of the quartz crystal is unstable, the clock will continuously accumulate the travel time error, resulting in an increasing error between the clock time and the standard time, affecting the clock travel accuracy, generally every month. The accumulated error will be several tens of seconds. When the error of the clock is large, the user needs to manually adjust the time, which is extremely inconvenient to use. As people's requirements for clock accuracy continue to increase, the travel time error of tens of seconds per month can no longer meet people's requirements for time accuracy.

The existing satellite clock can time synchronize the clock by frequently receiving the satellite timing signal to maintain time precision, but the receiving process needs to consume a large amount of power. In order to be convenient to use, the clock is generally powered by an alkaline dry battery, and its power is relatively limited. Frequent reception of signals will affect the service life of the clock battery, and the accuracy of the electronic clock and the battery life are common concerns of users, which also restricts Widespread promotion of satellite clocks.

Summary of the invention

In view of the deficiencies of the prior art, the present invention provides a low power control method and a clock system for a satellite timing clock system.

The specific technical solution of the low power consumption control method of the satellite timing clock system of the present invention is as follows:

A low-power control method for a satellite timing clock system includes the following steps:

(1) When the satellite timing clock system is traveling, the travel time frequency of the satellite timing clock system is compensated according to a crystal frequency/temperature function relationship preset in the satellite timing clock system to compensate the satellite timing clock system. Travel time difference due to temperature changes;

(2) receiving and decoding the satellite standard time by the satellite receiving module in the satellite timing clock system;

(3) a satellite standard time obtained by the clock microprocessor in the satellite timing clock system according to the step (2), Synchronizing the time of the real-time clock in the clock microprocessor, and measuring the time difference between the real-time clock time and the satellite standard time, and calculating the crystal frequency accuracy;

(4) The satellite timing clock system corrects the crystal frequency/temperature function relationship in the step (1) according to the crystal frequency accuracy obtained in the step (3), and the satellite timing clock system is corrected according to the frequency. /temperature function relationship repeats the step (1);

(5) The satellite timing clock system adjusts the period in which the satellite receiving module in the satellite timing clock system receives the satellite standard time according to the crystal frequency accuracy obtained in the step (3), and calculates the next receiving satellite signal. time.

The low-power control method for the satellite timing clock system of the present invention first compensates the travel time frequency according to a preset crystal frequency/temperature function relationship when the satellite timing clock system travels, and compensates for the time difference caused by the temperature change; The satellite receiving module receives the satellite standard time, synchronizes the real-time clock (RTC) time of the clock processor, calculates the time difference between the real-time clock time and the satellite standard time, and further calculates the frequency accuracy of the crystal; according to the frequency accuracy, Correct the crystal frequency/temperature function relationship, the clock is compensated according to the modified frequency/temperature function relationship; according to the frequency accuracy, the clock receiving satellite standard time period is adjusted, and the frequency accuracy is reduced when the frequency accuracy is high; When the satellite signal is received for time synchronization, the high-precision long-time travel of the clock is realized, thereby not only greatly improving the clock travel accuracy, but also reducing the power consumption of the clock system.

Through the above technical solution, the invention can reduce the frequency and frequency of receiving satellite signals as much as possible, reduce the power consumption of the clock system, and maintain the high-precision travel time of the clock; so that the invention has the characteristics of low power consumption, high precision, stability and reliability. .

According to a preferred embodiment, in the step (4), the travel time difference of the satellite timing clock system is compensated and corrected by the following method: the satellite timing clock system detects the ambient temperature in real time through a temperature detecting module. And calculating the average ambient temperature within a certain time difference compensation period; calculating the actual frequency accuracy of the crystal at the current ambient temperature in the satellite timing clock system according to the crystal frequency accuracy as a function of the ambient temperature And determining, by the actual frequency accuracy and the time value of the compensation period, a time deviation caused by a change in the accuracy of the crystal frequency during the compensation period, and adjusting a clock parameter of the satellite timing clock system according to the time difference To improve the accuracy of travel time.

According to a preferred embodiment, in the step (4), the crystal frequency/temperature function is corrected by the method: the satellite timing clock system synchronizes when the satellite standard time is not received for the first time. And the clock microprocessor measures a time difference between the real-time clock and the standard time; and then, according to a time interval from the last synchronization to the current synchronization, calculating a crystal in the satellite timing clock system during the time interval The average frequency accuracy is based on the frequency accuracy to correct the crystal frequency accuracy as a function of ambient temperature.

According to a preferred embodiment, in the step (5), the next receiving satellite is calculated by the following method Time of the signal: the satellite timing clock system receives the satellite standard time through its satellite receiving module, and records the time difference between the real time clock time and the satellite standard time when synchronizing the real time clock time; Then, calculating the frequency accuracy of the crystal in the satellite timing clock system in the time interval of two synchronizations, and determining the frequency accuracy range of the real-time clock time synchronization; when the frequency accuracy is high, increasing The period of receiving large satellite signals reduces the number of satellite signal receptions to reduce system power consumption; when the frequency accuracy is low, the period of satellite signal reception is reduced, and the number of satellite signal receptions is increased to ensure the accuracy of the clock.

The specific technical solution of a low-power satellite timing clock system of the present invention is as follows:

A low power satellite timing clock system includes: a microprocessor including a real time clock circuit and a clock source of the real time clock circuit is a quartz crystal; connected to the microprocessor a satellite receiving module, the satellite receiving module is configured to receive and decode the satellite standard time periodically; a temperature detecting module connected to the microprocessor, the temperature detecting module is configured to detect an ambient temperature in real time; and the micro processing a motor movement module connected to the motor; the motor movement module is configured to control time, minute and second hands to display time information in real time; and a power module connected to the microprocessor, the power module is used for the low The power consumption satellite timing clock system provides power; and a display module connected to the microprocessor, the display module is configured to display time, minute and second hand real time information of the low power satellite timing clock system.

The low-power satellite timing clock system of the invention uses the satellite receiving module to receive the satellite standard time, updates the real-time clock time of the clock microprocessor, measures the time difference between the clock time and the satellite standard time, calculates the frequency accuracy, and corrects the pre-correction Set the frequency/temperature function relationship; use the temperature detection module to detect the ambient temperature, compensate the clock system time difference according to the preset or corrected frequency/temperature function relationship, and adjust the satellite signal reception period according to the clock frequency accuracy. , can greatly improve the clock travel time and long-term punctuality accuracy, from the original cumulative error of tens of seconds per month to 1 second per month. Through the above technical solution, the invention can reduce the frequency and frequency of receiving satellite signals as much as possible, reduce the power consumption of the clock system, and maintain the high-precision travel time of the clock; so that the invention has the characteristics of low power consumption, high precision, stability and reliability. .

According to a preferred embodiment, the low power satellite timing clock system further includes a low voltage detection module coupled to the microprocessor for detecting a battery voltage of the low power satellite timing clock system. The battery voltage of the satellite clock system is detected by setting a low voltage detection module. When the battery voltage is lower than the set voltage threshold, the microprocessor can control the motor to stop the second hand to remind the user to replace the battery in time.

According to a preferred embodiment, the low power satellite timing clock system further includes a watchdog module and a button operation module connected to the microprocessor.

According to a preferred embodiment, the motor movement module comprises a feedback optocoupler circuit for detecting the position of the pointer. By setting the feedback optocoupler circuit to detect the position of the pointer, if the time indicated by the pointer position deviates from the actual clock time, The microprocessor can control the clock hands to automatically chase the needle to calibrate the time.

According to a preferred embodiment, the microprocessor is a low power microprocessor.

According to a preferred embodiment, the temperature detection module is a temperature sensor.

Compared with the prior art, the present invention has the following beneficial effects:

The invention uses the satellite receiving module to receive the satellite standard time, updates the real-time clock time of the clock microprocessor, measures the time difference between the clock time and the satellite standard time, calculates the frequency accuracy, and corrects the preset frequency/temperature function relationship; The temperature detection module detects the ambient temperature, compensates the clock system time difference according to the preset or corrected frequency/temperature function relationship, and adjusts the satellite signal receiving period according to the clock frequency accuracy, which can greatly improve the clock travel time and length. Time punctuality accuracy increases from the cumulative error of tens of seconds per month to 1 second per month. Through the above technical solution, the invention can reduce the frequency and frequency of receiving satellite signals as much as possible, reduce the power consumption of the clock system, and maintain the high-precision travel time of the clock; so that the invention has the characteristics of low power consumption, high precision, stability and reliability. .

DRAWINGS

1 is a schematic diagram showing the main steps of a low power consumption control method for a satellite timing clock system of the present invention;

2 is a schematic diagram of time difference compensation in a low power consumption control method of a satellite timing clock system of the present invention;

3 is a schematic diagram of function correction in a low power control method of a satellite timing clock system of the present invention;

4 is a schematic structural view of a low power satellite timing clock system of the present invention.

List of reference signs

10-microprocessor

11-quartz crystal

20-satellite receiver module

30-temperature detection module

40-motor movement module

50-power module

60-display module

70-low voltage detection module

80-watchdog module

90-button operation module

Detailed ways

The invention will now be described in detail in conjunction with the drawings.

Example 1

This embodiment discloses a preferred embodiment of the low power consumption control method of the satellite timing clock system of the present invention.

As shown in FIG. 1, FIG. 2 and FIG. 3, a low-power control method for a satellite timing clock system includes the following steps:

(3) The clock microprocessor in the satellite timing clock system synchronizes the time of the real-time clock in the clock microprocessor according to the satellite standard time obtained in the step (2), and measures the real-time clock time and the satellite. Calculate the crystal frequency accuracy by the time difference of the standard time;

Among them, the frequency accuracy = time difference / the time interval from the last synchronization to this synchronization.

The low-power control method for the satellite timing clock system of the embodiment firstly performs temperature compensation on the travel time frequency according to a preset crystal frequency/temperature function relationship when the satellite timing clock system travels, and compensates for the time difference caused by the temperature change; The satellite receiving time module receives the satellite standard time for synchronizing the real-time clock (RTC) time of the clock processor, and calculates the time difference between the real-time clock time and the satellite standard time, and further calculates the frequency accuracy of the crystal; Degree, correct the crystal frequency / temperature function relationship, the clock is temperature compensated according to the modified frequency / temperature function; according to the frequency accuracy, adjust the period of the clock receiving satellite standard time, reduce the number of reception when the frequency accuracy is high; It is possible to realize high-precision long-time travel of the clock with as little reception satellite signal as possible, thereby not only greatly improving the clock travel accuracy but also reducing the power consumption of the clock system.

Through the above technical solution, the invention can reduce the frequency and frequency of receiving satellite signals as much as possible, reduce the power consumption of the clock system, and maintain the high-precision travel time of the clock; so that the invention has the characteristics of low power consumption, high precision, stability and reliability.

Preferably, in the step (1), the time difference of the satellite timing clock system is performed by the following method. Compensation correction:

The satellite timing clock system detects the ambient temperature in real time through a temperature detecting module, and calculates an average ambient temperature within a certain time difference compensation period;

Calculating an actual frequency accuracy of the crystal at the current ambient temperature in the satellite timing clock system according to the crystal frequency accuracy as a function of ambient temperature;

And determining, by the actual frequency accuracy and the time value of the compensation period, a time deviation caused by a change in the accuracy of the crystal frequency during the compensation period, and adjusting a clock parameter of the satellite timing clock system according to the time difference, To improve the accuracy of travel time.

Preferably, in the step (4), the crystal frequency/temperature function is corrected by:

The satellite timing clock system measures a time difference between the real time clock and the standard time when synchronization is not performed for the first time when the satellite standard time is received;

Then, based on the time interval from the last synchronization to the current synchronization, the average frequency accuracy of the crystal during the time interval in the satellite timing clock system is calculated, and the crystal frequency accuracy and the ambient temperature are corrected according to the frequency accuracy. relationship.

By correcting the frequency accuracy of the crystal as a function of ambient temperature, the punctuality accuracy of the clock in subsequent runs can be further improved.

Preferably, in the step (5), the time for receiving the satellite signal next time is calculated by the following method:

The satellite timing clock system receives the satellite standard time through its satellite receiving module, and records the time difference between the real time clock time and the satellite standard time when synchronizing the real time clock time;

Then, calculating a frequency accuracy of the crystal in the satellite timing clock system in a time interval of two synchronizations, and determining a range of frequency accuracy of the real-time clock time synchronization;

When the frequency accuracy is high, increase the period of satellite signal reception and reduce the number of satellite signal reception (such as once every 5 days) to reduce system power consumption;

When the frequency accuracy is low, the period of satellite signal reception is reduced, and the number of satellite signal receptions (such as once every day) is increased to ensure the accuracy of the clock.

In this embodiment, the frequency accuracy can be measured by the frequency deviation. Higher frequency accuracy and lower standards can be based on punctual accuracy of the clock requirements, depending on the situation. For example, when the frequency deviation is less than 1 ppm, the frequency accuracy can be considered to be high; when the frequency deviation is greater than 10 ppm, the frequency accuracy can be considered to be low.

Example 2

This embodiment discloses a preferred embodiment of the satellite timing clock system of the present invention.

As shown in FIG. 4, a satellite timing clock system includes a microprocessor 10, a satellite receiving module 20, a temperature detecting module 30, a motor movement module 40, a power module 50, and a display module 60.

Microprocessor 10, microprocessor 10 includes a real time clock (RTC). The clock source of the real-time clock is a quartz crystal 11.

The function of the microprocessor 10 is to compensate the travel time frequency according to the preset crystal frequency/temperature function relationship, compensate the time difference caused by the temperature change, and control the satellite receiving module to receive the satellite standard time for synchronizing the clock microprocessor. Real-time clock (RTC) time, and calculate the time difference between the clock time and the satellite standard time, further calculate the frequency accuracy of the crystal; according to the frequency accuracy, correct the crystal frequency/temperature function relationship, the clock is corrected according to the frequency/temperature Function relationship, temperature compensation; according to the frequency accuracy, adjust the period of the clock receiving satellite standard time, reduce the number of times when the frequency accuracy is high

Preferably, the microprocessor 10 can be a low power microprocessor.

Preferably, the crystal frequency of the quartz crystal 11 is 32.768 kHz.

The satellite receiving module 20 is coupled to the microprocessor 10. The satellite receiving module 20 is controlled by the microprocessor 10 and receives and decodes the satellite standard time through the satellite antenna.

The temperature detection module 30 is coupled to the microprocessor 10. Temperature detection module 30 is controlled by microprocessor 10 for detecting ambient temperature in real time.

Preferably, the temperature detecting module 30 is a temperature sensor.

The motor movement module 40 is coupled to the microprocessor 10. The motor movement module 40 is controlled by the microprocessor 10 for controlling the time, minute, and second hands to display time information in real time.

Further, the motor movement module 40 includes a feedback optocoupler circuit. It is used to detect the position of the pointer. By setting the feedback optocoupler circuit to detect the position of the pointer, if the time indicated by the pointer position deviates from the actual time, the microprocessor 10 can control the clock pointer to automatically chase the needle to calibrate the time.

Specifically, when the feedback optocoupler circuit detects that the time indicated by the pointer position deviates from the actual time, the microprocessor 10 controls the motor movement module 40 to control the clock hands to automatically chase the needle, thereby calibrating the time.

The power module 50 is coupled to the microprocessor 10. The power module 50 is used to provide power to the satellite timing clock system.

Display module 60 is coupled to microprocessor 10. The display module 60 is controlled by the microprocessor 10 for displaying real-time time information of the hour, minute and second hands of the satellite clock system.

Preferably, the display module 60 can be an LCD display or an LED display.

Further, the satellite timing clock system of the present embodiment further includes a low voltage detecting module 70 connected to the microprocessor 10 for detecting the battery voltage of the satellite clock system. The battery voltage of the satellite clock system is detected by setting the low voltage detecting module 70. When the battery voltage is lower than the set voltage threshold, the microprocessor 10 can control the motor to stop the second hand. To remind users to replace the battery in time. Specifically, when the low voltage detecting module 70 detects that the battery voltage of the system is too low, it sends the detected information to the microprocessor 10, and the microprocessor 10 controls the motor movement module 40 to stop the second hand by the motor. .

Further, the satellite timing satellite clock system further includes a watchdog module 80 coupled to the microprocessor 10.

Further, the satellite timing satellite clock system further includes a button operation module 90 connected to the microprocessor 10.

The working process of the satellite timing satellite clock system of this embodiment is as follows:

The microprocessor 10 detects the ambient temperature in real time through the temperature detecting module, and performs temperature compensation on the travel time frequency according to the preset crystal frequency/temperature function relationship to compensate for the travel time difference caused by the temperature change;

Received and decoded by the satellite receiving module 20 to obtain the satellite standard time; and sent to the microprocessor 10;

After receiving the satellite standard time, the microprocessor 10 synchronizes the time of the real-time clock in the clock microprocessor, and measures the time difference between the clock time and the satellite standard time to further calculate the frequency accuracy of the crystal;

Correct the crystal frequency/temperature function relationship according to the obtained frequency accuracy;

According to the obtained frequency accuracy, the period of the standard time of receiving the satellite is adjusted. When the frequency accuracy is high, the interval between receptions is increased, and the time of receiving the satellite signal next time is calculated.

Specifically, the time difference of the real-time clock (RTC) in the clock microprocessor is compensated and corrected by the following method:

The temperature detection module detects the ambient temperature in real time, and calculates the average ambient temperature within a certain time difference compensation period; calculates the actual frequency accuracy of the crystal at the current ambient temperature according to the relationship between the crystal frequency accuracy and the ambient temperature; The frequency accuracy and the time value of the compensation period obtain the time deviation caused by the change of the crystal frequency accuracy in the compensation period, and adjust the clock clock parameters according to the time difference to improve the travel time precision.

Among them, it also includes a correction step for the frequency accuracy of the crystal as a function of ambient temperature:

When the clock is not synchronized for the first time receiving the satellite standard time, the microprocessor measures the time difference between the clock and the standard time, and then calculates the average frequency of the crystal during the time interval according to the time interval from the last synchronization to the current synchronization. Accuracy, based on the accuracy of the frequency, corrects the crystal frequency accuracy as a function of ambient temperature. By correcting the relationship between the frequency accuracy of the crystal and the ambient temperature, it is possible to compensate for the aging of the crystal, improve or maintain the frequency accuracy of the crystal, and ensure the clock with high precision.

The method further includes the steps of adjusting the period of the clock satellite standard time reception according to the punctuality accuracy of the clock:

The clock system receives the satellite standard time through the satellite receiving module, records the time difference between the clock time and the satellite standard time when synchronizing the clock time, and then calculates the frequency accuracy of the crystal in the time interval of two synchronizations, and In the satellite signal receiving management process, the range of frequency accuracy when the clock is synchronized is determined. When the frequency accuracy is high, the period of satellite signal reception is increased, and the number of satellite signal receptions is reduced as much as possible (every 5 days); When the frequency accuracy is low, the period of satellite signal reception is appropriately reduced, and the number of satellite signal receptions (once every day) is increased to ensure the time. The accuracy of the clock.

In the satellite timing clock system of the present embodiment, according to the preset crystal frequency/temperature function relationship, the satellite frequency compensation is performed according to the preset crystal frequency/temperature function relationship, and the time difference generated by the temperature change is compensated; the satellite receiving module is used to receive the satellite standard time, and is used for Synchronize the RTC time of the clock processor and calculate the time difference between the clock time and the satellite standard time to further calculate the frequency accuracy of the crystal; according to the frequency accuracy, correct the crystal frequency/temperature function relationship, and the clock is corrected according to the frequency/ Temperature function relationship, temperature compensation; according to the frequency accuracy, adjust the period of the clock receiving satellite standard time, reduce the number of reception when the frequency accuracy is high. Therefore, it is possible to realize high-precision long-time travel of the clock with as few reception satellite signals as possible, thereby not only greatly improving the clock travel accuracy, but also reducing the power consumption of the clock system.

It is to be noted that all of the features disclosed in the specification, or the steps of all methods or processes disclosed, may be combined in any manner other than mutually exclusive features and/or steps.

In addition, the above specific embodiments are exemplary, and those skilled in the art can devise various solutions inspired by the disclosure of the present invention, and these solutions are also within the scope of the present invention and fall within the protection of the present invention. Within the scope. It should be understood by those skilled in the art that the claims The scope of the invention is defined by the claims and their equivalents.

Claims

A low-power control method for a satellite timing clock system, characterized in that it comprises the following steps:

(1) When the satellite timing clock system is traveling, the travel time frequency of the satellite timing clock system is compensated according to a crystal frequency/temperature function relationship preset in the satellite timing clock system to compensate the satellite timing clock system. Travel time difference due to temperature changes;

(2) receiving and decoding the satellite standard time by the satellite receiving module in the satellite timing clock system;

(3) The clock microprocessor in the satellite timing clock system synchronizes the time of the real-time clock in the clock microprocessor according to the satellite standard time obtained in the step (2), and measures the real-time clock time and the satellite. Calculate the crystal frequency accuracy by the time difference of the standard time;

(4) The satellite timing clock system corrects the crystal frequency/temperature function relationship in the step (1) according to the crystal frequency accuracy obtained in the step (3), and the satellite timing clock system is corrected according to the frequency. /temperature function relationship repeats the step (1);

(5) The satellite timing clock system adjusts the period in which the satellite receiving module in the satellite timing clock system receives the satellite standard time according to the crystal frequency accuracy obtained in the step (3), and calculates the next receiving satellite signal. time.
The low-power control method for a satellite timing clock system according to claim 1, wherein in the step (1), the time difference of the satellite timing clock system is compensated and corrected by the following method. :

The satellite timing clock system detects the ambient temperature in real time through a temperature detecting module, and calculates an average ambient temperature within a certain time difference compensation period;

Calculating an actual frequency accuracy of the crystal at the current ambient temperature in the satellite timing clock system according to the crystal frequency accuracy as a function of ambient temperature;

And determining, by the actual frequency accuracy and the time value of the compensation period, a time deviation caused by a change in the accuracy of the crystal frequency during the compensation period, and adjusting a clock parameter of the satellite timing clock system according to the time difference, To improve the accuracy of travel time.
The low-power control method for a satellite timing clock system according to claim 1, wherein in the step (4), the crystal frequency/temperature function is corrected by:

The satellite timing clock system measures a time difference between the real time clock and the standard time when synchronization is not performed for the first time when the satellite standard time is received;

Then, based on the time interval from the last synchronization to the current synchronization, the crystal in the satellite timing clock system is calculated The average frequency accuracy during the time interval, based on which the accuracy of the crystal frequency is corrected as a function of ambient temperature.
The low-power control method for a satellite timing clock system according to claim 1, wherein in the step (5), the time for receiving the satellite signal next time is calculated by:

The satellite timing clock system receives the satellite standard time through its satellite receiving module, and records the time difference between the real time clock time and the satellite standard time when synchronizing the real time clock time;

Then, calculating a frequency accuracy of the crystal in the satellite timing clock system in a time interval of two synchronizations, and determining a range of frequency accuracy of the real-time clock time synchronization;

When the frequency accuracy is high, the period of satellite signal reception is increased, and the number of satellite signal receptions is reduced to reduce system power consumption;

When the frequency accuracy is low, the period of satellite signal reception is reduced, and the number of satellite signal reception is increased to ensure the accuracy of the clock.
A low power satellite timing clock system, characterized in that it comprises:

a microprocessor (10), the microprocessor (10) includes a real time clock circuit and the clock source of the real time clock circuit is a quartz crystal (11);

a satellite receiving module (20) connected to the microprocessor (10), the satellite receiving module (20) for timing receiving and decoding to obtain a satellite standard time;

a temperature detecting module (30) connected to the microprocessor (10), the temperature detecting module (30) for detecting an ambient temperature in real time;

a motor movement module (40) connected to the microprocessor (10); the motor movement module (40) is configured to control time, minute and second hands to display time information in real time;

a power module (50) coupled to the microprocessor (10), the power module (50) for providing power to the low power satellite timing clock system;

And a display module (60) connected to the microprocessor (10), wherein the display module (60) is configured to display time, minute and second hand real time information of the low power satellite timing clock system.
A low power satellite timing clock system according to claim 5, wherein said low power satellite timing clock system further comprises a low voltage detection module (70) coupled to said microprocessor (10) ) for detecting the battery voltage of the low power satellite timing clock system.
A low power satellite timing clock system according to claim 5, wherein said low power satellite timing clock system further comprises a watchdog module (80) coupled to said microprocessor (10). ) and the button operation module (90).
A low power satellite timing clock system according to any one of claims 5 to 7, wherein said motor movement module (40) includes a feedback optocoupler circuit for detecting the position of the pointer.
A low power satellite timing clock system according to any one of claims 5 to 7, wherein said microprocessor (10) is a low power microprocessor.
A low power satellite timing clock system according to any one of claims 6 to 7, characterized in that the temperature detecting module (30) is a temperature sensor.