CN114614933A - Time synchronization method and system based on satellite synchronous clock - Google Patents
Time synchronization method and system based on satellite synchronous clock Download PDFInfo
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- CN114614933A CN114614933A CN202210267615.5A CN202210267615A CN114614933A CN 114614933 A CN114614933 A CN 114614933A CN 202210267615 A CN202210267615 A CN 202210267615A CN 114614933 A CN114614933 A CN 114614933A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- G—PHYSICS
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- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
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- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
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Abstract
The application relates to a time synchronization method and a time synchronization system based on a satellite synchronous clock, which relate to the technical field of the satellite synchronous clock, wherein the method comprises the steps of receiving time synchronization information, wherein the time synchronization information comprises a system identification parameter and a satellite time source parameter corresponding to the system identification parameter; acquiring a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter; and generating a time output instruction according to the satellite system time zone and executing the time output instruction, wherein the time output instruction is used for pushing the satellite system time zone according to the system identification parameter. The method and the device have the effect of improving the time synchronization precision among the systems.
Description
Technical Field
The present invention relates to the field of satellite synchronous clock technology, and in particular, to a time synchronization method and system based on a satellite synchronous clock.
Background
With the continuous improvement of the automation level of power plants, the requirements of computer control, protection and automation devices on time synchronization are higher and higher.
The related art can refer to chinese patent with publication number CN111948932A, which discloses a clock synchronization system for nuclear power plants, comprising: the system comprises a first master clock, a first communication module positioned on a first nuclear island, a second communication module positioned on a second nuclear island, a third communication module positioned on a first conventional island and a fourth communication module positioned on a second conventional island; the first master clock is in communication connection with the first communication module, the second communication module, the third communication module and the fourth communication module respectively; the first communication module is in communication connection with first nuclear island equipment located in the first nuclear island, the second communication module is in communication connection with second nuclear island equipment located in the second nuclear island, the third communication module is in communication connection with first conventional island equipment located in the first conventional island, and the fourth communication module is in communication connection with second conventional island equipment located in the second conventional island.
With respect to the above-described techniques, the inventors consider that the following drawbacks exist: the time synchronization device of the power plant adopts a configuration mode that each control system is respectively arranged, and has the defect of low time synchronization precision among the systems.
Disclosure of Invention
In order to improve the time synchronization precision among systems, the application provides a time synchronization method and system based on a satellite synchronous clock.
In a first aspect, the present application provides a time synchronization method based on a satellite synchronization clock, which adopts the following technical scheme:
a time synchronization method based on a satellite synchronous clock comprises the following steps:
receiving time synchronization information, wherein the time synchronization information comprises a system identification parameter and a satellite time source parameter corresponding to the system identification parameter;
acquiring a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter;
and generating a time output instruction according to the satellite system time zone and executing the time output instruction, wherein the time output instruction is used for pushing the satellite system time zone according to the system identification parameter.
By adopting the technical scheme, the user enables each system to be correspondingly associated with the satellite system at the corresponding position according to the geographical position of each system. When the system works, the satellite system provides time for the system at the corresponding position, so that a plurality of systems can simultaneously acquire time signals corresponding to the satellite, a uniform time system is established for each system, and the time synchronization precision among the systems is further improved.
Optionally, before the step of generating a time output instruction and executing, the method further includes:
generating a synchronization system summary table according to the satellite time source parameters, wherein the synchronization system summary table comprises all system identification parameters corresponding to the satellite time source parameters;
and executing the steps of generating the time output instruction and executing according to the synchronous system summary table and the satellite system time zone.
By adopting the technical scheme, when the synchronization system adjusts the system time according to the satellite system time zone, the synchronization system acquires all system identifications corresponding to the current satellite and simultaneously pushes the satellite system time zone at the moment to all systems corresponding to the current satellite, thereby realizing the one-step pushing process of the synchronization system and improving the time synchronization efficiency of the synchronization system.
Optionally, after the step of generating a time output instruction and executing, the method further includes:
acquiring actual synchronization time in real time;
inquiring preset precision detection time corresponding to the actual synchronization time from a preset database;
if the actual synchronization time reaches the preset precision detection time, acquiring actual satellite time service precision;
and generating a time service precision pushing instruction according to the actual satellite time service precision and executing the time service precision pushing instruction, wherein the time service precision pushing instruction is used for pushing a time service precision pushing signal.
By adopting the technical scheme, the synchronization system periodically monitors the time precision of the satellite synchronous clock and pushes the corresponding monitoring result to the user, so that the user can conveniently know the actual precision of the current satellite synchronous clock.
Optionally, before the step of generating and executing the time service precision push instruction, the method further includes:
inquiring theoretical satellite time service precision corresponding to the actual satellite time service precision from a preset database;
if the actual satellite time service precision does not reach the theoretical satellite time service precision, acquiring the connection time service precision corresponding to the actual satellite time service precision;
generating a time service precision average value according to the actual satellite time service precision and the connection time service precision;
and executing the step of generating and executing the time service precision pushing instruction according to the time service precision average value.
By adopting the technical scheme, if the actual satellite time service precision does not reach the theoretical satellite time service precision at the moment, the precision of the satellite synchronous clock is lower at the moment, the synchronous system obtains the measurement precision at the moment before the current measurement precision and the measurement precision at the moment after the current measurement precision, the time service precision average value is obtained according to the three precisions, and the synchronous system pushes the obtained time service precision average value to a user, so that the user can conveniently know the time service precision in a certain range.
Optionally, after the step of generating the time service precision average value, the method further includes:
generating a time service precision error according to the time service precision average value and the theoretical satellite time service precision;
inquiring a time service error threshold corresponding to the time service precision error from a preset database;
and if the time service precision error reaches the time service error threshold value, generating a precision adjusting instruction and executing.
By adopting the technical scheme, if the error between the current time service precision average value and the theoretical satellite time service precision is larger, the satellite synchronous clock is difficult to provide good time service operation for the system at the moment, and the synchronous system generates a precision adjusting instruction at the moment to remind a user of timely adjusting the acquisition precision of the satellite signal.
Optionally, after the step of generating and executing the precision adjustment instruction, the method further includes:
acquiring internal clock information, wherein the internal clock information comprises a clock time parameter;
and generating a time source switching instruction according to the clock time parameter and executing the time source switching instruction, wherein the time source switching instruction is used for pushing the clock time parameter according to the system identification parameter.
By adopting the technical scheme, when the time service error of the satellite synchronous clock is large, the synchronous system switches the time control mode of each system, and the time synchronization operation is performed through the clock time parameter, so that each system can still ensure a relatively accurate time acquisition process when the satellite synchronous clock has large error.
In a second aspect, the present application provides a time synchronization system based on a satellite synchronization clock, which adopts the following technical solutions:
a time synchronization system based on a satellite synchronized clock, comprising:
the system comprises a time synchronization information receiving module, a time synchronization information transmitting module and a time synchronization information receiving module, wherein the time synchronization information receiving module is used for receiving time synchronization information, and the time synchronization information comprises a system identification parameter and a satellite time source parameter corresponding to the system identification parameter;
the satellite system time zone obtaining module is used for obtaining a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter;
and the time output instruction generating module is used for generating and executing a time output instruction according to the satellite system time zone, and the time output instruction is used for pushing the satellite system time zone according to the system identification parameter.
In a third aspect, the present application provides an intelligent terminal, which adopts the following technical scheme:
an intelligent terminal comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and that can perform any of the above-described satellite-synchronized clock-based time synchronization methods.
In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions:
a computer readable storage medium storing a computer program that can be loaded by a processor and executed to perform any one of the above-described satellite-synchronized clock-based time synchronization methods.
In summary, the present application includes at least one of the following beneficial technical effects:
and the user enables each system to be correspondingly associated with the satellite system at the corresponding position according to the geographic position of each system. When the system works, the satellite system provides time for the system at the corresponding position, so that a plurality of systems can simultaneously acquire time signals corresponding to the satellite, a uniform time system is established for each system, and the time synchronization precision among the systems is further improved.
When the synchronization system adjusts the system time according to the satellite system time zone, the synchronization system obtains all system identifications corresponding to the current satellite and simultaneously pushes the satellite system time zone at the moment to all systems corresponding to the current satellite, thereby realizing the one-step pushing process of the synchronization system and improving the time synchronization efficiency of the synchronization system.
If the actual satellite time service precision does not reach the theoretical satellite time service precision, the precision of the satellite synchronous clock is lower, the synchronous system obtains the measurement precision at the previous moment and the measurement precision at the next moment of the current measurement precision, the time service precision average value is obtained according to the three precisions, and the synchronous system pushes the obtained time service precision average value to a user, so that the user can conveniently know the time service precision in a certain range.
Drawings
Fig. 1 is a schematic flowchart of a time synchronization method based on a satellite synchronization clock according to an embodiment of the present application.
Fig. 2 is a schematic flow chart of generating and executing a time service precision push instruction in the embodiment of the present application.
Fig. 3 is a flowchart illustrating steps executed to generate and execute a time service precision push instruction in an embodiment of the present application.
Fig. 4 is a schematic flow chart illustrating a process of querying a time service error threshold corresponding to a time service precision error from a preset database in the embodiment of the present application.
Fig. 5 is a block diagram of a time synchronization system based on a satellite synchronous clock according to an embodiment of the present application.
Description of the reference numerals: 1. a time synchronization information receiving module; 2. a satellite system time zone acquisition module; 3. and a time output instruction generation module.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a time synchronization method and system based on a satellite synchronous clock.
Referring to fig. 1, a time synchronization method based on a satellite synchronous clock includes:
and S101, receiving time synchronization information.
Specifically, before the synchronous system works, a user inputs and configures various parameters including a satellite mode, a time source starting, a network port IP address, a device gateway, an input delay compensation, an output signal configuration, a signal type selection, a serial port parameter, an output reverse direction, a system time zone and the like through a display panel, and the device deployment can be completed without the assistance of a computer.
When the synchronous system works, the synchronous system receives time synchronous information input by a user through the display panel. The time synchronization information includes a system identification parameter and a satellite time source parameter corresponding to the system identification parameter.
And S102, acquiring a satellite system time zone corresponding to the satellite time source parameter.
Specifically, the synchronization system obtains a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter. The satellite system time zone is used for representing the time corresponding to the current power plant system area, and the synchronization system carries out time service operation on each system in the power plant according to the satellite system time zone.
And S103, generating a synchronous system summary table.
Specifically, the synchronization system generates a synchronization system summary table according to the satellite time source parameters, wherein the synchronization system summary table includes all system identification parameters corresponding to the satellite time source parameters. In an actual production process, each system in the same power plant usually uses the same satellite to perform time synchronization operation.
When the synchronization system performs time adjustment operation on the power plant system, the synchronization system acquires all power plant system identifications corresponding to the current satellite and correspondingly generates a synchronization system summary table, so that the synchronization system can conveniently know all systems corresponding to the current satellite.
And S104, generating a time output instruction and executing.
Specifically, the synchronization system generates and executes a time output instruction according to the synchronization system summary table and the satellite system time zone, wherein the time output instruction is used for pushing the satellite system time zone according to the identification parameters of each power plant system.
When the synchronous system works, the satellite system is used for providing time for the power plant systems at corresponding positions, so that a plurality of power plant systems in the same power plant can simultaneously acquire time signals corresponding to the satellites, a unified time system is established for each power plant system, and the time synchronization precision among the systems is further improved.
When the synchronization system carries out time service operation, the current satellite system time zone is simultaneously pushed to all systems corresponding to the current satellite, so that the one-step pushing process of the synchronization system is realized, and the time synchronization efficiency of the synchronization system is improved.
Referring to fig. 2, after S104, the actual satellite time service precision is generated according to the actual synchronization time, which specifically includes the following steps:
s201, acquiring actual synchronization time in real time.
Specifically, when the synchronization system performs time synchronization operation, the actual working time of the synchronization system is accumulated by a timer arranged in the display panel, and the synchronization system acquires the actual synchronization time in real time to know the continuous working time of the synchronization system.
S202, inquiring preset precision detection time corresponding to the actual synchronization time from a preset database.
Specifically, the synchronization system queries preset precision detection time corresponding to the actual synchronization time from a preset database while acquiring the actual working time, wherein the preset precision detection time is preset and generated by a user according to the self requirement, and the preset precision detection time is used for representing a time interval required by precision detection of the satellite synchronization clock.
And S203, if the actual synchronization time reaches the preset precision detection time, acquiring the actual satellite time service precision.
Specifically, when the actual working time of the synchronization system reaches the preset precision detection time, it is indicated that the synchronization system needs to perform precision detection on the satellite synchronization clock at this time, and the synchronization system obtains the actual satellite time service precision, where the actual satellite time service precision is used to indicate the time service precision of the current satellite synchronization clock.
And S204, generating a time service precision pushing instruction and executing the time service precision pushing instruction.
Specifically, the synchronization system generates and executes a time service precision push instruction according to the actual satellite time service precision, wherein the time service precision push instruction is used for pushing a time service precision push signal. The synchronous system periodically monitors the time precision of the satellite synchronous clock and pushes the corresponding monitoring result to a user, so that the user can know the actual precision of the current satellite synchronous clock conveniently.
Referring to fig. 3, before S204, a time service precision average value is generated according to the theoretical satellite time service precision, and the method specifically includes the following steps:
s301, theoretical satellite time service precision corresponding to the actual satellite time service precision is inquired from a preset database.
Specifically, after acquiring the actual satellite time service precision of the satellite synchronous clock at the moment, the synchronization system queries a theoretical satellite time service precision corresponding to the actual satellite time service precision from a preset database, wherein the theoretical satellite time service precision is the theoretical precision which the satellite synchronous clock should reach.
And S302, if the actual satellite time service precision does not reach the theoretical satellite time service precision, acquiring the connection time service precision corresponding to the actual satellite time service precision.
Specifically, if the synchronization system finds that the actual satellite time service precision does not reach the theoretical satellite time service precision, it indicates that the precision of the satellite synchronization clock is low and does not meet the standard. And the synchronization system acquires the connection time service precision corresponding to the current time measurement precision.
The connection time service precision is the measurement precision of a previous measurement time node and the measurement precision of a next measurement time node of the current time measurement precision, and then three precision measurement values in a time period of a time point with lower precision are obtained.
And S303, generating a time service precision average value.
Specifically, the synchronization system generates a time service precision average value according to the actual satellite time service precision and the connection time service precision. Wherein, the time service precision average value is the average value of the three precision measurement values. For example, if the current satellite time service precision is 40ns, the previous satellite time service precision is 30ns, and the previous satellite time service precision is 30ns, the average time service precision at this time is (40 +30+ 30)/3 ns.
And S304, generating and executing the time service precision pushing command.
Specifically, the synchronization system executes the steps of generating and executing the time service precision pushing instruction according to the time service precision average value. The synchronization system pushes the calculated time service precision average value to a user, so that the user can know the satellite time service precision condition in a certain time period conveniently.
Referring to fig. 4, after S303, an accuracy adjustment command is generated according to the time service accuracy average value, which specifically includes the following steps:
s401, generating a time service precision error.
Specifically, the synchronization system generates a time service precision error according to the time service precision average value and the theoretical satellite time service precision. The time service precision error is the difference between the time service precision average value and the theoretical satellite time service precision, and the time service precision error is used for representing the error offset of satellite time service.
S402, inquiring a time service error threshold corresponding to the time service precision error from a preset database.
Specifically, after the synchronization system calculates and generates the time service precision error, a time service error threshold corresponding to the time service precision error is inquired from a preset database, wherein the time service error threshold is preset and generated by a user and is used for indicating the maximum error which can be reached by the satellite synchronization clock in a normal state.
And S403, if the time service precision error reaches a time service error threshold value, generating a precision adjusting instruction and executing.
Specifically, if the error between the current time service precision average value and the theoretical satellite time service precision is large, it is indicated that the satellite synchronous clock is in an abnormal working state at the moment, and it is difficult to provide a good time service operation for the power plant system, and at the moment, the synchronous system generates a precision adjusting instruction to remind a user to adjust the acquisition precision of the satellite signal in time.
For example, in actual operation, a user can improve the time service precision of the satellite synchronous clock by selecting a multi-source timing mode, wherein the time source comprises a GPS, a big dipper, a B code, an NTP, a CDMA, an OCXO, an atomic clock and the like.
S404, obtaining internal clock information.
Specifically, when the time service precision of the satellite synchronous clock module is poor, the synchronous system acquires internal clock information, wherein the internal clock information comprises clock time parameters. A timing device is disposed within the power plant system, the timing device providing an internal clock signal.
Wherein the timing means may be selected from such means as a temperature compensated crystal oscillator, an oven controlled crystal oscillator, a helium atomic clock or a corresponding peripheral disciplined circuit. The timing device can alternatively enable the electric field system to maintain a certain accuracy when the satellite fails.
And S405, generating a time source switching instruction and executing.
Specifically, the synchronization system generates and executes a time source switching instruction according to the clock time parameter, wherein the time source switching instruction is used for pushing the clock time parameter according to the system identification parameter. The synchronization system pushes clock time parameters to various systems within the power plant.
When the time service error of the satellite synchronous clock is large, the synchronous system switches the time control mode of each system, and time synchronization operation is performed based on the clock time parameters, so that each system can still ensure a relatively accurate time acquisition process when the satellite synchronous clock has large error.
As an implementation manner, S404 to S405 in the embodiment of the present application are optional.
The implementation principle of the time synchronization method based on the satellite synchronous clock in the embodiment of the application is as follows: and the user enables each system to be correspondingly associated with the satellite system at the corresponding position according to the geographic position of each system. When the power plant system works, the synchronization system provides time for the power plant system at the corresponding position through the satellite system, so that a plurality of systems can simultaneously acquire time signals corresponding to the satellite, and a uniform time system is established for each system.
Based on the method, the embodiment of the application also discloses a time synchronization system based on the satellite synchronization clock. Referring to fig. 5, a time synchronization system based on a satellite synchronous clock includes:
the time synchronization information receiving module 1 is configured to receive time synchronization information, where the time synchronization information includes a system identification parameter and a satellite time source parameter corresponding to the system identification parameter.
And the satellite system time zone obtaining module 2 is used for obtaining the satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter.
And the time output instruction generating module 3 is used for generating and executing a time output instruction according to the satellite system time zone, and the time output instruction is used for pushing the satellite system time zone according to the system identification parameter.
The embodiment of the application also discloses an intelligent terminal, which comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes the time synchronization method based on the satellite synchronous clock.
The embodiment of the application also discloses a computer readable storage medium. A computer program capable of being loaded by a processor and executing a method for time synchronization based on a satellite synchronization clock as described above is stored in a computer readable storage medium, which includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above examples are only used to illustrate the technical solutions of the present invention, and do not limit the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from these embodiments without making any inventive step, fall within the scope of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still make various combinations, additions, deletions or other modifications of the features of the embodiments of the present invention according to the situation without conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, and these technical solutions also fall within the protection scope of the present invention.
Claims (9)
1. A time synchronization method based on a satellite synchronous clock is characterized by comprising the following steps:
receiving time synchronization information, wherein the time synchronization information comprises a system identification parameter and a satellite time source parameter corresponding to the system identification parameter;
acquiring a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter;
and generating a time output instruction according to the satellite system time zone and executing the time output instruction, wherein the time output instruction is used for pushing the satellite system time zone according to the system identification parameter.
2. The method of claim 1, further comprising, prior to the step of generating and executing the time output instruction:
generating a synchronization system summary table according to the satellite time source parameters, wherein the synchronization system summary table comprises all system identification parameters corresponding to the satellite time source parameters;
and executing the steps of generating the time output instruction and executing according to the synchronous system summary table and the satellite system time zone.
3. The method of claim 1, further comprising, after the step of generating and executing the time output instruction:
acquiring actual synchronization time in real time;
inquiring preset precision detection time corresponding to the actual synchronization time from a preset database;
if the actual synchronization time reaches the preset precision detection time, acquiring actual satellite time service precision;
and generating a time service precision pushing instruction according to the actual satellite time service precision and executing the time service precision pushing instruction, wherein the time service precision pushing instruction is used for pushing a time service precision pushing signal.
4. The method for time synchronization based on the satellite synchronous clock according to claim 3, wherein before the step of generating and executing the time service precision push instruction, the method further comprises:
inquiring theoretical satellite time service precision corresponding to the actual satellite time service precision from a preset database;
if the actual satellite time service precision does not reach the theoretical satellite time service precision, acquiring the connection time service precision corresponding to the actual satellite time service precision;
generating a time service precision average value according to the actual satellite time service precision and the connection time service precision;
and executing the step of generating and executing the time service precision pushing instruction according to the time service precision average value.
5. The method of claim 4, further comprising, after the step of generating the time service accuracy average, the steps of:
generating a time service precision error according to the time service precision average value and the theoretical satellite time service precision;
inquiring a time service error threshold corresponding to the time service precision error from a preset database;
and if the time service precision error reaches the time service error threshold value, generating a precision adjusting instruction and executing.
6. The method of claim 5, further comprising, after the step of generating and executing the precision adjustment command:
acquiring internal clock information, wherein the internal clock information comprises a clock time parameter;
and generating a time source switching instruction according to the clock time parameter and executing the time source switching instruction, wherein the time source switching instruction is used for pushing the clock time parameter according to the system identification parameter.
7. A time synchronization system based on a satellite-synchronized clock, comprising:
the system comprises a time synchronization information receiving module (1) for receiving time synchronization information, wherein the time synchronization information comprises a system identification parameter and a satellite time source parameter corresponding to the system identification parameter;
a satellite system time zone obtaining module (2) for obtaining a satellite system time zone corresponding to the satellite time source parameter according to the satellite time source parameter;
and the time output instruction generating module (3) is used for generating and executing a time output instruction according to the satellite system time zone, and the time output instruction is used for pushing the satellite system time zone according to the system identification parameter.
8. The utility model provides an intelligent terminal which characterized in that: comprising a memory and a processor, said memory having stored thereon a computer program which can be loaded by the processor and which performs the method of any of claims 1 to 6.
9. A computer-readable storage medium characterized by: a computer program which can be loaded by a processor and which executes the method according to any of claims 1 to 6.
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| CN115453850B (en) * | 2022-08-05 | 2023-07-28 | 福建星云电子股份有限公司 | Time synchronization method, system, equipment and medium for energy storage converter |
| CN117930622A (en) * | 2024-03-25 | 2024-04-26 | 山东师范大学 | Wireless electronic control timing system |
| CN117930622B (en) * | 2024-03-25 | 2024-06-11 | 山东师范大学 | Wireless electronic control timing system |
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| CN114614933B (en) | 2022-11-04 |
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