Satellite-based clock providing device and method
Through the satellite-based clock providing device, the clock signal is processed using the satellite clock source and microwave clock circuit, the problem of high clock synchronization complexity in the prior art is solved, and the unification of clock signals and the improvement of system stability is achieved.
Patent Information
- Application Number
- CN202411901062.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-02-28
AI Technical Summary
Existing digital circuit systems, communication systems and computers have high complexity in clock synchronization, resulting in changes in clock frequency, phase and amplitude of clock signals, affecting system stability.
A satellite-based clock providing device, including a satellite clock source and a microwave clock circuit, is used to provide a first clock signal through the satellite clock source, and to process a second clock signal of one or more frequencies that can be used by the electronic circuit or electronic information system through the microwave clock circuit.
The unification of clock signals is achieved, avoiding the damage to clock consistency, reducing the number of maintenance times of clock synchronization, and improving the stability of the system, especially in harsh environments.
Smart Images
Figure CN119535944A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of clock signal technology, and in particular to a satellite-based clock providing device and method. Background Art
[0002] For clock source technology, clock signals play a key role in many electronic devices such as modern digital circuits, communication systems, computers, etc. It defines the operation timing and time interval of each circuit and component, and is the basic condition for the operation of electronic information systems. Clock signals are generated by clock circuits. Common clock circuits include: crystal oscillators, RC oscillators, crosstalk phase-locked loops, etc.
[0003] Satellite 1PPS clock synchronization technology, which is a precise time signal sent by a GPS satellite or other reference source, can be used for time / clock synchronization to ensure coordination and synchronization between various devices.
[0004] The system clocks of existing digital circuit systems, communication systems, computers and other systems all come from clock circuits designed in the system. Due to the circuit design method, selected device parameters, device manufacturers, and differences between individual devices, all clock circuits are different. Therefore, their clock signals are different from the beginning, and the differences will gradually increase as they accumulate over a long period of time.
[0005] The clock circuit in the system will be affected by temperature, humidity, power supply fluctuations and the aging of its own materials, which will cause changes in the frequency, phase and amplitude of the clock signal. In particular, changes in frequency usually have a significant impact on the entire digital circuit system, communication system, computer system and other systems, and in serious cases, directly lead to the system being unable to operate.
[0006] Many solutions to the clock synchronization problem use satellite 1PPS signals or network timing servers for timing. The equipment system design is complex and the calculation process after receiving the data is complex. Summary of the invention
[0007] The present invention aims to provide a satellite-based clock providing device and method to solve the problem of high complexity in clock synchronization using satellite 1PPS signals or network timing server timing.
[0008] The present invention provides a satellite-based clock providing device, comprising:
[0009] A satellite clock source, used for providing a first clock signal;
[0010] The microwave clock circuit is used to process the first clock signal into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.
[0011] In some embodiments, the satellite clock source includes an atomic clock, a first frequency processor, a first power amplifier, and a first antenna connected in sequence;
[0012] The atomic clock is used to provide a reference clock signal;
[0013] The first frequency processor is used to perform frequency processing on the reference clock signal;
[0014] The first power amplifier is used to amplify the frequency-processed clock signal to obtain the first clock signal;
[0015] The first antenna is used to transmit the first clock signal.
[0016] In some embodiments, the first frequency processor includes a frequency multiplier and a frequency divider connected to each other;
[0017] The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal;
[0018] The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process.
[0019] In some embodiments, the first frequency processor includes a frequency multiplier, and the frequency multiplier is used to perform frequency multiplication processing on the reference clock signal.
[0020] In some embodiments, the first frequency processor includes a plurality of first branches and a combiner connected to the plurality of first branches; each first branch includes a frequency multiplier and a frequency divider connected thereto;
[0021] The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal;
[0022] The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process;
[0023] The combiner is used to combine the clock signals processed by the first branches into one clock signal.
[0024] In some embodiments, the microwave clock circuit includes a second antenna, a second power amplifier, and a second frequency processor connected in sequence;
[0025] The second antenna is used to receive the first clock signal;
[0026] The second power amplifier is used to amplify the first clock signal;
[0027] The second frequency processor is used to perform frequency processing on the amplified first clock signal to obtain a second clock signal that can be used by the electronic circuit or the electronic information system.
[0028] In some embodiments, the second frequency processor includes a filter; the filter is used to filter out a second clock signal that can be used by an electronic circuit or an electronic information system from the amplified first clock signal.
[0029] In some embodiments, the second frequency processor includes a filter and a frequency divider connected in sequence;
[0030] The filter is used to filter the first clock signal;
[0031] The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal is the second clock signal that can be used by the electronic circuit or the electronic information system.
[0032] In some embodiments, the second frequency processor includes a plurality of second branches, each of which includes a filter and a frequency divider connected to each other;
[0033] The filter is used to filter the first clock signal;
[0034] The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal output by each second branch has a different frequency, thereby obtaining second clock signals of multiple frequencies that can be used by electronic circuits or electronic information systems.
[0035] The present invention also provides a satellite-based clock providing method, comprising:
[0036] Providing a first clock signal via a satellite clock source;
[0037] The first clock signal is processed into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.
[0038] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0039] 1. Through the above-mentioned satellite-based clock providing device, the satellite clock source radiates oscillating electromagnetic wave signals from the air to the surroundings, and the microwave clock circuit on the ground or in the air processes it into a clock signal of one or more frequencies that can be used by the electronic circuit or electronic information system, thereby unifying the clock of the electronic circuit or electronic information system, avoiding the situation where each electronic circuit or electronic information system has its own clock oscillation circuit, and the differences in circuits and devices cause the clock consistency to be destroyed after a period of operation, and the clock synchronization work needs to be performed again. By adopting the clock signal provided by the present invention, after one clock synchronization, it can be guaranteed that the subsequent running clocks remain synchronized, reducing the system risk caused by the clock being out of sync after a period of operation in the interval between two clock synchronizations, and secondly, it can reduce the number of maintenance times of system clock synchronization.
[0040] 2. The present invention adopts a microwave clock circuit to replace the traditional clock circuit. The clock signal provided after being processed by the microwave clock circuit will not be affected by temperature, humidity, power supply fluctuations and aging of its own materials, thereby avoiding the change of clock signal frequency caused by temperature, humidity, power supply fluctuations and aging of its own components in the traditional clock circuit. The change of clock signal frequency usually brings major failure problems to the entire electronic circuit or electronic information system (such as digital circuit system, communication system, computer and other systems), thereby improving the stability of the system; especially for deserts, islands, deep forests and other harsh environments and sparsely populated places, the use of the present invention can improve system stability and reduce maintenance.
[0041] 3. The clock source of the present invention comes from the atomic clock of the satellite. The clock signal transmitted by the satellite adopts pulse wave, continuous wave, etc. The microwave clock circuit can be processed by one or more links of frequency multiplication, frequency division, filtering and amplification to provide the clock signal to the electronic circuit or electronic information system for use. It does not need to perform a complicated solution process like the traditional 1PPS clock synchronization technology, and the system structure is simple, thus reducing the complexity. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 It is a schematic diagram of the structure of a satellite-based clock providing device in an embodiment of the present invention.
[0043] Figure 2 This is a structural block diagram of a first implementation method of a satellite clock source in an embodiment of the present invention.
[0044] Figure 3 This is a structural block diagram of a second implementation method of a satellite clock source in an embodiment of the present invention.
[0045] Figure 4 This is a structural block diagram of a third implementation method of a satellite clock source in an embodiment of the present invention.
[0046] Figure 5 This is a structural block diagram of a first implementation method of a microwave clock circuit in an embodiment of the present invention.
[0047] Figure 6 This is a structural block diagram of a second implementation method of a microwave clock circuit in an embodiment of the present invention.
[0048] Figure 7 This is a structural block diagram of a third implementation method of a microwave clock circuit in an embodiment of the present invention.
[0049] Figure 8 A flowchart of a method for providing a satellite-based clock in an embodiment of the present invention. DETAILED DESCRIPTION
[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0052] Satellite atomic clocks, such as cesium atomic clocks, hydrogen atomic clocks, mercury atomic clocks, rubidium atomic clocks, strontium atomic clocks, etc., have very high time accuracy. Scientists have achieved a cesium atomic clock with an error of no more than one second in 20 million years, and the cold atomic microwave clock used on the Chinese space station has an error of no more than one second in 100 million years. Therefore, the atomic clocks of satellites can be used for clock synchronization. Figure 1 As shown, an embodiment of the present invention provides a satellite-based clock providing device, comprising:
[0053] A satellite clock source, used for providing a first clock signal;
[0054] The microwave clock circuit is used to process the first clock signal into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.
[0055] like Figure 2 , Figure 3 , Figure 4 As shown, the satellite clock source provided in the embodiment of the present application includes an atomic clock, a first frequency processor, a first power amplifier and a first antenna connected in sequence;
[0056] The atomic clock is used to provide a high-precision reference clock signal. By using the atomic clock as a clock source, the accuracy and stability of the clock are greatly improved;
[0057] The first frequency processor is used to perform frequency processing on the reference clock signal, and the clock signal after frequency processing has met the frequency requirement of system design;
[0058] The first power amplifier is used to amplify the frequency-processed clock signal to obtain the first clock signal;
[0059] The first antenna is used to transmit the first clock signal, for example, from the air to the ground and outer space.
[0060] In some embodiments, the first frequency processor may be implemented in at least one of the following three ways:
[0061] The first type: Figure 2 As shown, the first frequency processor includes a frequency multiplier and a frequency divider connected to each other;
[0062] The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal;
[0063] The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process, and the divided clock signal meets the frequency requirement of the system design.
[0064] The second type: Figure 3 As shown, the first frequency processor includes a frequency multiplier, and the frequency multiplier is used to perform frequency multiplication processing on the reference clock signal, and directly process the reference clock signal through the frequency multiplication processing to meet the frequency requirements of the system design.
[0065] The third type: Figure 4 As shown, the first frequency processor includes a plurality of first branches and a combiner connected to the plurality of first branches; each first branch includes a frequency multiplier and a frequency divider connected thereto;
[0066] The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal;
[0067] The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process, and the divided clock signal meets the frequency requirement of the system design;
[0068] The combiner is used to combine the clock signals processed by the first branches into one clock signal.
[0069] like Figure 5 , Figure 6 , Figure 7 As shown, the microwave clock circuit provided in the embodiment of the present application includes a second antenna, a second power amplifier and a second frequency processor connected in sequence;
[0070] The second antenna is used to receive the first clock signal;
[0071] The second power amplifier is used to amplify the first clock signal;
[0072] The second frequency processor is used to perform frequency processing on the amplified first clock signal to obtain a second clock signal that can be used by the electronic circuit or the electronic information system.
[0073] In some embodiments, the second frequency processor may be implemented in at least one of the following three ways:
[0074] The first type: Figure 5 As shown, the second frequency processor includes a filter; the filter is used to filter out a second clock signal that can be used by an electronic circuit or an electronic information system from the amplified first clock signal.
[0075] The second type: Figure 6 As shown, the second frequency processor includes a filter and a frequency divider connected in sequence;
[0076] The filter is used to filter the first clock signal;
[0077] The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal is the second clock signal that can be used by the electronic circuit or the electronic information system.
[0078] The third type: Figure 7 As shown, the second frequency processor includes a plurality of second branches, each of which includes a connected filter and a frequency divider;
[0079] The filter is used to filter the first clock signal;
[0080] The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal output by each second branch has a different frequency, thereby obtaining second clock signals of multiple frequencies that can be used by electronic circuits or electronic information systems.
[0081] The implementation of the first frequency processor and the second frequency processor can be designed according to the frequency of the clock signal ultimately required by the electronic circuit or the electronic information system.
[0082] Through the above-mentioned satellite-based clock providing device, the satellite clock source radiates oscillating electromagnetic wave signals from the air to the surroundings, and the microwave clock circuit on the ground or in the air processes it into a clock signal of one or more frequencies that can be used by the electronic circuit or electronic information system, thereby unifying the clock of the electronic circuit or electronic information system, avoiding the situation where the electronic circuit or electronic information system has its own clock oscillation circuit, and the differences in circuits and devices cause the clock consistency to be destroyed after a period of operation, and the clock synchronization work needs to be performed again. By using the clock signal provided by the present invention, after one clock synchronization, it can be ensured that the subsequent running clocks remain synchronized, reducing the system risk caused by the clock being out of sync after a period of operation in the interval between two clock synchronizations, and secondly, the number of maintenance times of the system clock synchronization can be reduced.
[0083] At the same time, the present invention adopts a microwave clock circuit to replace the traditional clock circuit. The clock signal provided after being processed by the microwave clock circuit will not be affected by temperature, humidity, power supply fluctuations and aging of its own materials, thereby avoiding the change of clock signal frequency caused by temperature, humidity, power supply fluctuations and aging of its own components in the traditional clock circuit. The change of clock signal frequency usually brings major failure problems to the entire electronic circuit or electronic information system (such as digital circuit system, communication system, computer and other systems), thereby improving the stability of the system; especially for deserts, islands, deep forests and other harsh environments and sparsely populated places, the use of the present invention can improve system stability and reduce maintenance.
[0084] In addition, the clock source of the present invention comes from the atomic clock of the satellite. The clock signal transmitted by the satellite can be a pulse wave, a continuous wave, etc. The microwave clock circuit can be processed by one or more links of frequency multiplication, frequency division, filtering, and amplification to provide the clock signal to the electronic circuit or electronic information system for use. It does not require a complex solution process like the traditional 1PPS clock synchronization technology, and the system structure is simple, thereby reducing complexity.
[0085] Based on the same technical concept, such as Figure 8 As shown, an embodiment of the present invention further provides a satellite-based clock providing method, including:
[0086] Providing a first clock signal via a satellite clock source;
[0087] The first clock signal is processed into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.
[0088] The specific implementation process of the above method can refer to the working principle of the aforementioned satellite-based clock providing device, which will not be repeated here.
[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A satellite-based clock providing device, characterized in that: include: A satellite clock source, used for providing a first clock signal; The microwave clock circuit is used to process the first clock signal into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.
2. The satellite-based clock providing device according to claim 1, characterized in that: The satellite clock source includes an atomic clock, a first frequency processor, a first power amplifier and a first antenna connected in sequence; The atomic clock is used to provide a reference clock signal; The first frequency processor is used to perform frequency processing on the reference clock signal; The first power amplifier is used to amplify the frequency-processed clock signal to obtain the first clock signal; The first antenna is used to transmit the first clock signal.
3. The satellite-based clock providing device according to claim 2, characterized in that: The first frequency processor includes a frequency multiplier and a frequency divider connected to each other; The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal; The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process.
4. The satellite-based clock providing device according to claim 2, characterized in that: The first frequency processor includes a frequency multiplier, and the frequency multiplier is used to perform frequency multiplication processing on the reference clock signal.
5. The satellite-based clock providing device according to claim 2, characterized in that: The first frequency processor includes a plurality of first branches and a combiner connected to the plurality of first branches; each first branch includes a frequency multiplier and a frequency divider connected thereto; The frequency multiplier is used to perform frequency multiplication processing on the reference clock signal; The frequency divider is used to divide the frequency of the clock signal after the frequency multiplication process; The combiner is used to combine the clock signals processed by the first branches into one clock signal.
6. The satellite-based clock providing device according to claim 1, characterized in that: The microwave clock circuit comprises a second antenna, a second power amplifier and a second frequency processor connected in sequence; The second antenna is used to receive the first clock signal; The second power amplifier is used to amplify the first clock signal; The second frequency processor is used to perform frequency processing on the amplified first clock signal to obtain a second clock signal that can be used by the electronic circuit or the electronic information system.
7. The satellite-based clock providing device according to claim 6, characterized in that: The second frequency processor includes a filter; the filter is used to filter out a second clock signal that can be used by an electronic circuit or an electronic information system from the amplified first clock signal.
8. The satellite-based clock providing device according to claim 6, characterized in that: The second frequency processor includes a filter and a frequency divider connected in sequence; The filter is used to filter the first clock signal; The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal is the second clock signal that can be used by the electronic circuit or the electronic information system.
9. The satellite-based clock providing device according to claim 6, characterized in that: The second frequency processor comprises a plurality of second branches, each of which comprises a connected filter and a frequency divider; The filter is used to filter the first clock signal; The frequency divider is used to divide the frequency of the filtered first clock signal, and the divided first clock signal output by each second branch has a different frequency, thereby obtaining second clock signals of multiple frequencies that can be used by electronic circuits or electronic information systems.
10. A satellite-based clock providing method, characterized in that: include: Providing a first clock signal via a satellite clock source; The first clock signal is processed into a second clock signal of one or more frequencies that can be used by an electronic circuit or an electronic information system.