CN206559369U - A kind of high steady time-base signal output system - Google Patents
A kind of high steady time-base signal output system Download PDFInfo
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- CN206559369U CN206559369U CN201621477012.4U CN201621477012U CN206559369U CN 206559369 U CN206559369 U CN 206559369U CN 201621477012 U CN201621477012 U CN 201621477012U CN 206559369 U CN206559369 U CN 206559369U
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Abstract
A kind of base source technology field when the utility model is related to, and in particular to high steady time-base signal output system.Including external signal input terminals, Ji Yuan during local reference, rubidium atomic clock, gps clock module, frequency error factor module, frequency synchronization module, when base handover module and central processing unit, base source output terminal is connected with frequency error factor module by signal input when external signal input terminals and local reference, frequency error factor module by signal output end, rubidium atomic clock output end, gps clock module output end with when base handover module signal input part be connected, Ji Yuan during local reference, rubidium atomic clock, the output end of gps clock module is also connected with frequency synchronization module, central processing unit frequency multiplication control signal output is connected with frequency error factor module control signal receiving terminal.Will be after synchronization it is local with reference to time-base signal as the benchmark of external pulse signal, can be consistent with System Clock Reference when the external pulse signal is inputted with optional frequency, inputted so as to meet any frequency range of user.
Description
Technical field
A kind of base source technology field when the utility model is related to, and in particular to high steady time-base signal output system.
Background technology
Existing Chinese UTC, big-dipper satellite time, gps satellite time, various high-precision atomic clocks can as when
Ji Yuan, for the time reference inside communications network system, but due to it is each when Ji Yuan independently of one another, can only be provided with a period of time base source
A kind of time reference, it is impossible to meet demand of the user in different occasions.Traditional time-base signal output system only with it is a kind of when base
Source, and base reference signal when all the way is exported, when the big acoustic events of the Shi Jiyuan in system, whole system will be unable to use, even if
The when Ji Yuan more renewed, also needs to spend more time to calibrate the when Ji Yuan newly changed, and because calibration has certain deviation,
The when base reference signal accuracy of system output is relatively low, it is impossible to meet the demand of high-precision occasion.
Utility model content
In order to solve the above technical problems, base reference signal is mutually calibrated when the utility model provides a kind of multichannel, failure
Rate is low, and accuracy is high, the steady time-base signal output system of widely applicable height.
Technical solutions of the utility model are：A kind of high steady time-base signal output system, including：External signal input terminals, sheet
Ji Yuan when ground is referred to, rubidium atomic clock, gps clock module, frequency error factor module, frequency synchronization module, when base handover module and in
Base source output terminal and the frequency error factor module by signal input when central processor, the external signal input terminals and local reference
Connection, the frequency error factor module by signal output end, rubidium atomic clock output end, gps clock module output end with it is described when base cut
Change the mold the connection of block signal input, Ji Yuan during the local reference, rubidium atomic clock, gps clock module output end also with it is described
Frequency synchronization module is connected, and the central processing unit frequency multiplication control signal output connects with the frequency error factor module control signal
Receiving end is connected, and the central processing unit phase adjustment signal output end is connected with the frequency synchronization module, the Frequency Synchronization
Module output end is final signal source output terminal.
Further, the frequency error factor module includes walking hour counter and signal generating module, and the external signal is defeated
Enter end and locally refer to when base source output terminal with it is described walk hour counter signal input part be connected, it is described walk hour counter frequency measurement
Information output is connected with the frequency measurement information input terminal of the central processing unit, and the frequency multiplication control signal of the central processing unit is defeated
Go out end be connected with the frequency multiplication control signal input of the signal generating module, the signal output part of the signal generating module and
Base handover module signal input part is connected when described.
Further, the frequency synchronization module includes first than phase module and second than phase module, the gps clock mould
Block signal output end and the rubidium atomic clock signal output part are connected with described first than phase module signal input part, and described first
The first phase modulation value signal output end than phase module is connected with the central processing unit, and the first of the central processing unit is mutually worth tune
Entire signal output end is connected with the rubidium atomic clock control end, when the rubidium atomic clock and local reference base source signal output end with
Described second than phase module connection, the described second the second phase modulation value signal output end and central processing unit company than phase module
Connect, the second control end for being mutually worth Ji Yuan when adjusting signal output part with the local reference of the central processing unit is connected.
Further, the frequency synchronization module also includes the first pulse per second (PPS) generation module and the second pulse per second (PPS) produces mould
Block, the rubidium atomic clock signal output part is connected with the first pulse per second (PPS) generation module, the first pulse per second (PPS) generation module
1PPS pps pulse per second signals output end be connected with described first than phase module and second than phase module, Ji Yuan during the local reference
Signal output part is connected with the second pulse per second (PPS) generation module, the 1PPS pps pulse per second signals of the second pulse per second (PPS) generation module
Output end is connected with described second than phase module.
Further, base handover module includes one-out-three selector, the rubidium atomic clock output end, gps clock when described
Module output end, frequency error factor module output end are connected with the one-out-three selector input, the one-out-three selector
Output end is final signal source output terminal.
Further, in addition to user selection signal input, the user selection signal input and the centre
Manage the selection instruction receiving terminal connection of device, the selection control signal output of the central processing unit and the one-out-three selector
Control signal input is connected.
Further, the GPS clock signal, rubidium atomic clock signal, the external pulse signal of frequency error factor module output
It is 10MHz signals.
The beneficial effects of the utility model：Using the control mode of central controller phaselocked loop, using GPS clock signal as base
Standard, realizes rubidium atomic clock signal and the local synchronization with reference to time-base signal.Using local after synchronization with reference to time-base signal as outer
The benchmark of portion's pulse signal, can be consistent with System Clock Reference when the external pulse signal is inputted with optional frequency, so that full
Sufficient any frequency range input of user, and input interval stable and consistent.And selected by one-out-three selector in the signal of Road wherein
All the way as final output signal source, when Ji Yuan breaks down at remaining, stable clock reference signal output is still ensured that,
There is more preferable stability.Three road signals are synchronized with each other, to wherein all the way when Ji Yuan change after, without calibration can realize
With system synchronization, it is easy to use, and accuracy rate is high.Ji Yuan is used as final output, Neng Gouman when being specified according to user instruction selection
The demand of the different occasions of sufficient user.
Brief description of the drawings
Fig. 1 is a kind of high steady time-base signal output system structured flowchart of the utility model；
Fig. 2 is the utility model frequency error factor modular structure block diagram；
Fig. 3 is the utility model frequency synchronization module structured flowchart；
Base handover module structured flowchart when Fig. 4 is the utility model；
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail：
As shown in figure 1, the system includes Ji Yuan, rubidium atomic clock, gps clock mould when external signal input terminals, local reference
Block, frequency error factor module, frequency synchronization module, when base handover module and central processing unit.Wherein, external signal input terminals are used for
External pulse signal is inputted to frequency error factor module, Ji Yuan during local reference locally refers to time-base signal, and export for generating
To frequency synchronization module and frequency error factor module, and receive the second of the central processing unit feedback the mutually value adjustment signal；Rubidium
Atomic clock, for generating rubidium atomic clock signal, and export to when base handover module and central processing unit, and receive the center
Mutually value adjusts signal to the first of processor feedback；Gps clock module, for generating GPS clock signal, and is exported to Frequency Synchronization
Module and Shi Ji handover modules；Frequency error factor module, for receiving external pulse signal and locally referring to time-base signal, with local
With reference on the basis of time-base signal to outside pulse signal carry out frequency multiplication, and by the external pulse signal output after frequency multiplication to when base cut
Change the mold block；
Frequency synchronization module, for receiving GPS clock signal, rubidium atomic clock signal and locally referring to time-base signal, passes through
The phase lock control of central processing unit realizes the synchronization of three kinds of signals；
When base handover module, for receive GPS clock signal, rubidium atomic clock signal and frequency error factor module output outside
Pulse signal, and so that wherein signal is used as signal source output all the way；
Central processing unit, base is believed during for realizing GPS clock signal, rubidium atomic clock signal and local reference by phaselocked loop
Number synchronization.
As shown in Fig. 2 frequency error factor module includes walking hour counter and signal generating module, walk hour counter locally to join
Examine on the basis of time-base signal 10MHz, frequency measurement is carried out to the external pulse signal received, and frequency measurement result is sent to centre
Device storage is managed, central processing unit generates frequency multiplication control signal according to frequency measurement result, to signal generating module CY22150 frequency multiplication system
Number registers are configured, and make the pulse signal frequency multiplication of outside input to 10MHz.
As shown in figure 3, frequency synchronization module includes the first pulse per second (PPS) generation module and the second pulse per second (PPS) generation module, and
First than phase module and second than phase module, the first pulse per second (PPS) generation module is used to receive rubidium atomic clock signal, generates 1PPS seconds
Pulse signal is simultaneously sent to first and compares phase module；Second pulse per second (PPS) generation module is used to receive locally to refer to time-base signal, generates
1PPS pps pulse per second signals are simultaneously sent to second and compare phase module.First than phase module on the basis of GPS clock signal, to rubidium atomic clock
Signal carries out phase difference measurements, calculates and central processing unit is sent to after the first phase modulation value, central processing unit is according to the first phase modulation value
Generation first mutually value adjustment signal, and by first mutually value adjustment signal feed back to rubidium atomic clock so that rubidium atomic clock output the second
Signal is synchronized with the UTC time of GPS outputs, realizes that rubidium atomic clock is synchronous with gps clock module by signal.Second than phase module with
On the basis of rubidium atomic clock signal, to local with reference to time-base signal progress phase difference measurements, calculate in being sent to after the second phase modulation value
Central processor, central processing unit according to the second phase modulation value generation second mutually value adjustment signal, and by second mutually value adjustment signal it is anti-
Feed local reference when Ji Yuan, so as to realize local synchronous with rubidium atomic clock signal with reference to time-base signal.
As shown in figure 4, when base handover module include one-out-three selector, one-out-three selector receives GPS clock signal, rubidium
Atomic clock signal and frequency error factor module output external pulse signal, can automatically select wherein all the way signal as output believe
Number source.The selection instruction that can also be inputted according to user selection signal input is exported, and selection instruction is sent to centre
Device is managed, central processing unit specifies GPS clock signal, rubidium atomic clock signal, frequency error factor module according to the selection instruction received
Corresponding signal in the external pulse signal of output is signal source output.
For meet during said system base output signal can continuous effective work, frequency synchronization module switches mould with timely base
Block needs co-ordination：
Under user's specific demand, for Fig. 4, user makes system time-base by sending command word to central processing unit
The 10MHz signals that 10MHz outputs are obtained after being handled using external signal input through Frequency Switching Unit.Now no matter Fig. 3 is synchronous
Whether work is continuing, and is system time-base 10MHz all without have influence on complete machine output.
According to Fig. 3, (A) central processing unit responds the request of user's phase adjustment first, and according to specific phase modulation value to rubidium
Base carries out corresponding phase modulation processing when atomic clock and local reference.(B) and then for first the first phase modulation than phase module acquisition
Value, adjusts signal according to first phase by central processing unit and carries out phase modulation processing to rubidium atomic clock.(C) finally phase is compared to second
The second phase modulation value that module is obtained, base carries out phase modulation when adjusting signal to local reference according to second phase by central processing unit
Processing.It should be noted that：Above-mentioned (A) is, with limit priority, once that is, user has phase request, then to make an immediate response, this
Sample, because the request of user, is system time-base 10MHz when influencing whether complete machine output during the adjustment of central processing unit, therefore
The signal to be adjusted that finishes such as need could normal work in user output.Above-mentioned (C) has time high priority, because whole dress
Base is as final output level signal source when putting dependence local reference, and it determines whether the signal frequency of whole device output stage is steady
It is fixed, signal not real-time working is adjusted according to Fig. 3 second phase, but according to central processing unit according to internal processes according to first
Phase adjustment signal carries out just carrying out a second phase adjustment signal phase modulation work after n times (N can be selected according to demand) phase modulation
Make.Above-mentioned (B) priority is minimum, and it is real-time working in the whole device course of work, once there is any of the above-described kind of adjustment
Demand, it can all be stopped.
It is described above, embodiment only of the present utility model, it is noted that any to be familiar with those skilled in the art
Member is in the technical scope disclosed by the utility model, and the change or replacement that can be readily occurred in should all be covered in the utility model
Protection domain within.
Claims (7)
1. a kind of high steady time-base signal output system, it is characterised in that including：Ji Yuan when external signal input terminals, local reference,
Rubidium atomic clock, gps clock module, frequency error factor module, frequency synchronization module, when base handover module and central processing unit, it is described
Base source output terminal is connected with the frequency error factor module by signal input when external signal input terminals and local reference, the frequency
Handover module signal output part, rubidium atomic clock output end, gps clock module output end with it is described when base handover module signal input
End connection, Ji Yuan, rubidium atomic clock, the output end of gps clock module also connect with the frequency synchronization module during the local reference
Connect, the central processing unit frequency multiplication control signal output is connected with the frequency error factor module control signal receiving terminal, described
Central processing unit phase adjustment signal output end is connected with the frequency synchronization module, and the frequency synchronization module output end is most
Whole signal source output terminal.
2. high steady time-base signal output system as claimed in claim 1, it is characterised in that the frequency error factor module includes walking
Hour counter and signal generating module, when the external signal input terminals and local reference base source output terminal with it is described walk when count
Device signal input part is connected, it is described walk hour counter the frequency measurement information of frequency measurement information output and the central processing unit input
End connection, the frequency multiplication control signal output of the central processing unit is inputted with the frequency multiplication control signal of the signal generating module
End connection, the signal output part of the signal generating module with it is described when base handover module signal input part be connected.
3. high steady time-base signal output system as claimed in claim 1, it is characterised in that：The frequency synchronization module includes the
One than phase module and second than phase module, the gps clock module by signal output end and the rubidium atomic clock signal output part with
Described first than phase module signal input part connection, described first than phase module the first phase modulation value signal output end with it is described in
Central processor is connected, and the first of the central processing unit is mutually worth adjustment signal output part is connected with the rubidium atomic clock control end,
Base source signal output end is connected with described second than phase module when the rubidium atomic clock and local reference, and described second compares phase module
The second phase modulation value signal output end be connected with the central processing unit, the central processing unit second mutually value adjustment signal it is defeated
Ji Yuan control end is connected when going out end with the local reference.
4. high steady time-base signal output system as claimed in claim 3, it is characterised in that：The frequency synchronization module also includes
First pulse per second (PPS) generation module and the second pulse per second (PPS) generation module, the rubidium atomic clock signal output part and first pulse per second (PPS)
Generation module is connected, the 1PPS pps pulse per second signals output end of the first pulse per second (PPS) generation module with described first than phase module and
Second than phase module connection, and base source signal output end is connected with the second pulse per second (PPS) generation module during the local reference, institute
The 1PPS pps pulse per second signals output end for stating the second pulse per second (PPS) generation module is connected with described second than phase module.
5. high steady time-base signal output system as claimed in claim 1, it is characterised in that base handover module includes three when described
Select a selector, the rubidium atomic clock output end, gps clock module output end, frequency error factor module output end are with described three
A selector input is selected to connect, the one-out-three selector output end is final signal source output terminal.
6. high steady time-base signal output system as claimed in claim 5, it is characterised in that also inputted including user selection signal
End, the user selection signal input is connected with the selection instruction receiving terminal of the central processing unit, the central processing unit
Selection control signal output be connected with the one-out-three selector control signal input.
7. high steady time-base signal output system as claimed in claim 1, it is characterised in that：The GPS clock signal, rubidium atom
Clock signal, the external pulse signal of frequency error factor module output are 10MHz signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477012.4U CN206559369U (en) | 2016-12-30 | 2016-12-30 | A kind of high steady time-base signal output system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621477012.4U CN206559369U (en) | 2016-12-30 | 2016-12-30 | A kind of high steady time-base signal output system |
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| CN206559369U true CN206559369U (en) | 2017-10-13 |
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| CN201621477012.4U Expired - Fee Related CN206559369U (en) | 2016-12-30 | 2016-12-30 | A kind of high steady time-base signal output system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107711A (en) * | 2017-12-19 | 2018-06-01 | 江汉大学 | A kind of clock source device |
| CN112666580A (en) * | 2020-12-16 | 2021-04-16 | 江汉大学 | Synchronization system of new energy vehicle |
-
2016
- 2016-12-30 CN CN201621477012.4U patent/CN206559369U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107711A (en) * | 2017-12-19 | 2018-06-01 | 江汉大学 | A kind of clock source device |
| CN112666580A (en) * | 2020-12-16 | 2021-04-16 | 江汉大学 | Synchronization system of new energy vehicle |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 Termination date: 20181230 |