CN104683089B - A kind of Time and Frequency Synchronization coalescing network system - Google Patents
A kind of Time and Frequency Synchronization coalescing network system Download PDFInfo
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- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 24
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- 229910052792 caesium Inorganic materials 0.000 claims description 12
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Abstract
The present invention provides a kind of Time and Frequency Synchronization coalescing network system, including：Backbone network one-level, two grades of Time and Frequency Synchronization nodes, backbone network time link and inter-provincial transmission network, provincial transmission network ,/county's transmission network, province's Intranet one-level, two grades of Time and Frequency Synchronization nodes and province's Intranet time link；Unidirectionally connected by backbone network time link and backbone network one-level Time and Frequency Synchronization node or two grades of Time and Frequency Synchronization nodes of backbone network between each inter-provincial transmission network；Unidirectionally connected between provincial transmission network by saving Intranet time link and saving Intranet one-level Time and Frequency Synchronization node；Unidirectionally connected by two grades of Time and Frequency Synchronization nodes of province's Intranet time link and province's Intranet one-level Time and Frequency Synchronization node or province's Intranet between provincial transmission network and ground/county's transmission network；Unidirectionally connected by two grades of Time and Frequency Synchronization nodes of province's Intranet time link and province's Intranet between various regions/county's transmission network；Inter-provincial transmission network is connected by backbone network time link, at least two province's Intranet one-level Time and Frequency Synchronization nodes and province's Intranet time link with provincial transmission network.
Description
Technical field
The present invention is on power system telecommunications technology, specifically on a kind of Time and Frequency Synchronization coalescing network system.
Background technology
For Utilities Electric Co., either power network itself, or based on supporting network power telecom network, in order to
Ensure its safe and reliable operation, be required for precise and stable Frequency Synchronization and time synchronized, wherein, power telecom network needs nE-
The Frequency Synchronization of the frequency accuracy of 12 magnitudes and end-to-end 5 μ s magnitude drift noises, protection, peace control, automation of power network etc.
System needs the precise synchronization of up to μ s magnitudes, various network management systems, computer information system and section communication equipment
Need the general precision time synchronized of ms magnitudes.
Existing electric power networks establish independent Frequency Synchronization net to meet the demand of Frequency Synchronization, for time synchronized
Demand, simply configures DVB in transformer station on demand and meets the demand of time synchronized, fails to form unified ground and personally instructs
When time synchronization network.In order to meet Frequency Synchronization demand and time synchronized demand, the networking means used be it is different, both
Do not unify to consider, this can bring a series of problems, including network repeated construction, increase network O＆M cost, network reliability
Reduction etc..
The content of the invention
The main purpose of the embodiment of the present invention is to provide a kind of Time and Frequency Synchronization coalescing network system, so as to realize that the time is same
The synchronous net network system of step and Frequency Synchronization combination network.
To achieve these goals, the embodiment of the present invention provides a kind of Time and Frequency Synchronization coalescing network system, it is characterised in that
Described Time and Frequency Synchronization coalescing network system includes：Key synchronization net and multiple nets synchronous inside the province, the key synchronous net and institute
Multiple nets synchronous inside the province are stated to connect respectively, wherein, the key synchronous net includes：Multiple backbone network one-level Time and Frequency Synchronization nodes,
Multiple two grades of Time and Frequency Synchronization nodes of backbone network, a plurality of backbone network time link and multiple inter-provincial transmission networks；Each inter-provincial transmission
Unidirectionally connected by the backbone network time link and backbone network one-level Time and Frequency Synchronization node between net, or pass through the backbone network
Two grades of Time and Frequency Synchronization nodes of time link and backbone network are unidirectionally connected；The net synchronous inside the province includes：It is provincial transmission network, multiple
Ground/county's transmission network, multiple province's Intranet one-level Time and Frequency Synchronization nodes, two grades of Time and Frequency Synchronization nodes of multiple province's Intranets and a plurality of province's Intranet
Time link；Pass through province's Intranet time link and province's Intranet one-level Time and Frequency Synchronization node between multiple provincial transmission networks
Unidirectional connection；Pass through province's Intranet time link and province's Intranet one between the provincial transmission network and described/county's transmission network
Level Time and Frequency Synchronization node is unidirectionally connected, or is unidirectionally connected by province's Intranet time link and province's two grades of Time and Frequency Synchronization nodes of Intranet
Connect；It is each describedly/county's transmission network between unidirectionally connected by two grades of Time and Frequency Synchronization nodes of province's Intranet time link and province's Intranet
Connect；The inter-provincial transmission network is connected by saving Intranet one-level Time and Frequency Synchronization node described in the backbone network time link and at least two
Connect, Intranet one-level Time and Frequency Synchronization node is saved described in described at least two and passes through province's Intranet time link and the provincial transmission
Net connection；Part of nodes sets reference time frequency clock PRTC, another part node in the backbone network one-level Time and Frequency Synchronization node
It is provided with part of nodes in zonal basis time-frequency clock LPRTC, province's Intranet one-level Time and Frequency Synchronization node and reference time frequency is set
Clock PRTC, another part node is provided with zonal basis time-frequency clock LPRTC, the reference time frequency clock PRTC and produces benchmark
Time-frequency clock signal, the zonal basis time-frequency clock LPRTC generating regions reference time frequency clock signal；Two grades of the backbone network
Be provided with two grades of Time and Frequency Synchronization nodes of Time and Frequency Synchronization node and province's Intranet from time-frequency clock STC, it is described from time-frequency when
Reference time frequency clock signal or zonal basis time-frequency clock signal described to receive clock STC, and during according to described benchmark
Frequency clock signal or zonal basis time-frequency clock signal are generated from time-frequency clock signal.
In one embodiment, above-mentioned inter-provincial transmission network and provincial transmission network are provided with the reference time frequency by least one
Clock PRTC province's Intranet one-level Time and Frequency Synchronization node and/or at least one it is provided with the zonal basis time-frequency clock LPRTC's
Save the connection of Intranet one-level Time and Frequency Synchronization node.
In one embodiment, above-mentioned reference time frequency clock PRTC includes two DVBs, double rubidium clock time frequency units
And single or multiple caesium clocks, the first time frequency signal of described double rubidium clock time frequency units reception DVB output and institute
The first reference signal of caesium clock output is stated, generates and exports comprising first according to first time frequency signal and the first reference signal
The reference time frequency clock signal of time signal and first frequency signal.
In one embodiment, when above-mentioned zonal basis time-frequency clock LPRTC includes two DVBs and double rubidium clocks
Frequency unit, described double rubidium clock time frequency units receive the second time frequency signal of the DVB output, according to described second
Time frequency signal generates and exports the zonal basis time-frequency clock signal comprising the second time signal and second frequency signal.
In one embodiment, it is provided with the backbone network one-level Time and Frequency Synchronization of the zonal basis time-frequency clock LPRTC
Node and province's Intranet one-level Time and Frequency Synchronization node include two-stage cascade structure：LPRTC1 Time and Frequency Synchronizations node and LPRTC2 time-frequencies
Synchronization node, when the LPRTC1 Time and Frequency Synchronizations node directly obtains described reference time frequency from the reference time frequency clock PRTC
Clock signal is synchronized；The LPRTC2 Time and Frequency Synchronizations node is by the LPRTC1 Time and Frequency Synchronizations node from the reference time frequency
Clock PRTC obtains described reference time frequency clock signal and synchronized.
In one embodiment, it is above-mentioned to be provided with rubidium clock or crystal oscillator out of time-frequency clock STC, it is described from time-frequency
Clock STC obtains the reference time frequency clock signal from the reference time frequency clock PRTC, and according to the reference time frequency clock
Signal output is described from time-frequency clock signal comprising the 3rd time signal and the 3rd frequency signal, or, it is described from time-frequency
Clock STC obtains the zonal basis time-frequency clock signal from the zonal basis time-frequency clock LPRTC, and according to the region
The output of reference time frequency clock signal is described from time-frequency clock signal.
In one embodiment, described two grades of Time and Frequency Synchronization nodes of backbone network from time-frequency clock STC are provided with and Intranet is saved
Two grades of Time and Frequency Synchronization nodes include three-stage cascade structure：When STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3
Frequency synchronization node, when the STC1 Time and Frequency Synchronizations node directly obtains described reference time frequency from the reference time frequency clock PRTC
Clock signal is synchronized, or described zonal basis time-frequency clock signal is directly obtained from described LPRTC1 Time and Frequency Synchronizations node
Synchronize；The STC2 Time and Frequency Synchronizations node is obtained by the STC1 Time and Frequency Synchronizations node from the reference time frequency clock PRTC
Described reference time frequency clock signal is taken to synchronize, or it is same from the LPRTC1 time-frequencies by the STC1 Time and Frequency Synchronizations node
Step node obtains described zonal basis time-frequency clock signal and synchronized；The STC3 Time and Frequency Synchronizations node passes through the STC2
Time and Frequency Synchronization node obtains described reference time frequency clock signal from the reference time frequency clock PRTC and synchronized, or passes through institute
State STC2 Time and Frequency Synchronizations node and described zonal basis time-frequency clock signal progress is obtained from the LPRTC1 Time and Frequency Synchronizations node
It is synchronous.
In one embodiment, the reference time frequency clock signal that above-mentioned reference time frequency clock PRTC is produced is described
LPRTC1 Time and Frequency Synchronizations node, LPRTC2 Time and Frequency Synchronizations node, STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3
PRTC- is pressed between Time and Frequency Synchronization node>LPRTC1->LPRTC2->STC1->STC2->STC3 order one-way transmission.
In one embodiment, the zonal basis time-frequency clock letter that above-mentioned zonal basis time-frequency clock LPRTC is produced
Number in the LPRTC1 Time and Frequency Synchronizations node, LPRTC2 Time and Frequency Synchronizations node, STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronization sections
LPRTC1- is pressed between point and STC3 Time and Frequency Synchronization nodes>LPRTC2->STC1->STC2->STC3 order one-way transmission.
The beneficial effect of the embodiment of the present invention is, by means of the invention it is possible to realize that time signal and frequency signal are unified
Transmission and distribution are transmitted there is provided safe and reliable, high-quality time and Frequency Synchronization, and can greatly save the synthesis of the whole network
Construction cost, is easy to unified operation maintenance management, improves operation maintenance management efficiency, save operation maintenance management cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is the structural representation of the Time and Frequency Synchronization coalescing network system according to the embodiment of the present invention；
Fig. 2 is the structural representation of the reference time frequency clock PRTC according to the embodiment of the present invention；
Fig. 3 is the structural representation of the zonal basis time-frequency clock LPRTC according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of Time and Frequency Synchronization coalescing network system.The present invention is carried out below in conjunction with accompanying drawing detailed
Explanation.
The embodiment of the present invention provides a kind of Time and Frequency Synchronization coalescing network system, as shown in figure 1, the Time and Frequency Synchronization UNE
System includes：Key synchronization net 1 and multiple nets 2 synchronous inside the province, key synchronization net 1 are connected respectively with multiple nets 2 synchronous inside the province.
The synchronous net 1 of above-mentioned backbone includes：Multiple backbone network one-level Time and Frequency Synchronization nodes 11, two grades of time-frequencies of multiple backbone networks
Synchronization node 12, a plurality of backbone network time link 13 and multiple inter-provincial transmission networks 14.Wherein, as shown in figure 1, a portion is saved
It is unidirectionally to be connected by above-mentioned backbone network time link 13 and backbone network one-level Time and Frequency Synchronization node 11 between border transmission network 14；
It is by above-mentioned two grades of Time and Frequency Synchronization nodes of backbone network time link 13 and backbone network between the provincial transmission network 14 of another part
12 unidirectional connections.
When being provided with reference time frequency clock PRTC or zonal basis time-frequency in each backbone network one-level Time and Frequency Synchronization node 11
Clock LPRTC.Wherein, as shown in Fig. 2 reference time frequency clock PRTC includes two reference time frequency DVBs, reference time frequencies
(what is shown in figure is only a caesium clock, but practical application, also can be according to need for double rubidium clock time frequency units and single or multiple caesium clocks
Multiple caesium clocks are set, and the present invention is not limited thereto), the double rubidium clock time frequency units of reference time frequency receive said reference time-frequency satellite
First time frequency signal of receiver output and the first reference signal of above-mentioned caesium clock output, and according to first time frequency signal and the
Reference time frequency clock signal of the one reference signal generation comprising very first time signal and first frequency signal, and by the reference time frequency
Clock signal is exported to the inter-provincial transmission network 14 being connected with backbone network one-level Time and Frequency Synchronization node 11, and passes through the inter-provincial transmission
Two grades of Time and Frequency Synchronization nodes 12 of backbone network that reference time frequency clock signal transmission is extremely connected by net 14 with the inter-provincial transmission network 14
Or another backbone network one-level Time and Frequency Synchronization node 11.
As shown in figure 3, zonal basis time-frequency clock LPRTC comprising two zonal basis time-frequency clock DVBs and
The double rubidium clock time frequency units of zonal basis time-frequency, the double rubidium clock time frequency units of zonal basis time-frequency receive above-mentioned zone reference time frequency clock
Second time frequency signal of DVB output, believes according to the generation of the second time frequency signal comprising the second time signal and second frequency
Number zonal basis time-frequency clock signal, and by the zonal basis time-frequency clock signal export to backbone network one-level Time and Frequency Synchronization
The inter-provincial transmission network 14 that node 11 is connected, and by the inter-provincial transmission network 14 by zonal basis time-frequency clock signal transmission to
Two grades of Time and Frequency Synchronization nodes 12 of backbone network or another backbone network one-level Time and Frequency Synchronization node 11 that the inter-provincial transmission network 14 is connected.
It is provided with from time-frequency clock STC, should be set out of time-frequency clock STC in two grades of Time and Frequency Synchronization nodes 12 of each backbone network
Rubidium clock or crystal oscillator are equipped with, reference time frequency clock signal, the rubidium are obtained from time-frequency clock STC from reference time frequency clock PRTC
Clock or crystal oscillator can be generated according to the reference time frequency clock signal comprising the 3rd time signal and the 3rd frequency signal from
Time-frequency clock signal, and this is exported to what is be connected with two grades of Time and Frequency Synchronization nodes 12 of backbone network inter-provincial from time-frequency clock signal
Transmission network 14, and will be another from time-frequency clock signal transmission to what is be connected with the inter-provincial transmission network 14 by the inter-provincial transmission network 14
One two grades of backbone network Time and Frequency Synchronization node 12；Or, obtain region from time-frequency clock STC from zonal basis time-frequency clock LPRTC
Reference time frequency clock signal, the rubidium clock or crystal oscillator can be generated from time-frequency clock according to the zonal basis time-frequency clock signal
Signal, and this is exported to the inter-provincial transmission network being connected with two grades of Time and Frequency Synchronization nodes 12 of backbone network from time-frequency clock signal
14, and by the inter-provincial transmission network 14 by from time-frequency clock signal transmission to another backbone being connected with the inter-provincial transmission network 14
Two grades of Time and Frequency Synchronization nodes 12 of net.
Above-mentioned net 2 synchronous inside the province includes：When provincial transmission network 21, multiple/county's transmission network 22, multiple province's Intranet one-levels
Frequency synchronization node 23, two grades of Time and Frequency Synchronization nodes 24 of multiple province's Intranets and a plurality of province's Intranet time link 25.
As shown in figure 1, passing through province's Intranet time link 25 and province between the provincial transmission network 21 and ground/county's transmission network 22
Intranet one-level Time and Frequency Synchronization node 23 is unidirectionally connected；Or, this inside the province synchronous net 2 also can by province's Intranet time link 25 and
Two grades of Time and Frequency Synchronization nodes 24 of Intranet are saved unidirectionally to connect.
When being provided with multiple provincial transmission networks 21 in synchronous net 2 inside the province, the province is passed through between multiple provincial transmission networks 21
Intranet time link 25 and the unidirectionally connection of province's Intranet one-level Time and Frequency Synchronization node 23.And the provincial transmission network 21 of a portion with it is upper
Unidirectionally connected by province's Intranet time link 25 and province's Intranet one-level Time and Frequency Synchronization node 23 between the ground stated/county's transmission network 22
Connect；Synchronous net 2 is unidirectionally connected another part by province's Intranet time link 25 and province's two grades of Time and Frequency Synchronization nodes 24 of Intranet inside the province
Connect.
In synchronous net 2 inside the province, pass through province's Intranet time link 25 and province between each above-mentioned ground/county's transmission network 22
Two grades of Time and Frequency Synchronization nodes 24 of Intranet are unidirectionally connected.
When being provided with reference time frequency clock PRTC or zonal basis time-frequency in each province's Intranet one-level Time and Frequency Synchronization node 23
Clock LPRTC.Wherein, as shown in Fig. 2 reference time frequency clock PRTC includes two reference time frequency DVBs, reference time frequencies
(what is shown in figure is only a caesium clock, but practical application, also can be according to need for double rubidium clock time frequency units and single or multiple caesium clocks
Multiple caesium clocks are set, and the present invention is not limited thereto), the double rubidium clock time frequency units of reference time frequency receive said reference time-frequency satellite
First time frequency signal of receiver output and the first reference signal of above-mentioned caesium clock output, and according to first time frequency signal and the
Reference time frequency clock signal of the one reference signal generation comprising very first time signal and first frequency signal, and by the reference time frequency
Clock signal is exported to the provincial transmission network 21 or ground/county's transmission network 22 being connected with province Intranet one-level Time and Frequency Synchronization node 23,
And by the provincial transmission network 21 or ground/county's transmission network 22 by reference time frequency clock signal transmission to the provincial transmission network 21 or
Two grades of Time and Frequency Synchronization nodes 24 of province's Intranet or another province's Intranet one-level Time and Frequency Synchronization node 23 that ground/county's transmission network 22 is connected.
As shown in figure 3, above-mentioned zonal basis time-frequency clock LPRTC includes two zonal basis time-frequency clock satellite receptions
Machine and the double rubidium clock time frequency units of zonal basis time-frequency, the double rubidium clock time frequency units of zonal basis time-frequency receive above-mentioned zone reference time frequency
Second time frequency signal of clock DVB output, the second time signal and the second frequency are included according to the generation of the second time frequency signal
The zonal basis time-frequency clock signal of rate signal, and the zonal basis time-frequency clock signal is exported to saving Intranet one-level time-frequency
The provincial transmission network 21 or ground that synchronization node 23 is connected/county's transmission network 22, and transmitted by the provincial transmission network 21 or ground/county
Province's Intranet that zonal basis time-frequency clock signal transmission is extremely connected by net 22 with the provincial transmission network 21 or ground/county's transmission network 22
Two grades of Time and Frequency Synchronization nodes 24 or another province's Intranet one-level Time and Frequency Synchronization node 23.
Each save is provided with from time-frequency clock STC in two grades of Time and Frequency Synchronization nodes 24 of Intranet, should be set out of time-frequency clock STC
Rubidium clock or crystal oscillator are equipped with, reference time frequency clock signal, the rubidium are obtained from time-frequency clock STC from reference time frequency clock PRTC
Clock or crystal oscillator can be generated according to the reference time frequency clock signal comprising the 3rd time signal and the 3rd frequency signal from
Time-frequency clock signal, and by this from time-frequency clock signal export to save two grades of Time and Frequency Synchronization nodes 24 of Intranet be connected it is provincial
Transmission network 21 or ground/county's transmission network 22, and will be passed by the provincial transmission network 21 or ground/county's transmission network 22 from time-frequency clock signal
Transport to the two grades of Time and Frequency Synchronization nodes 24 of another province's Intranet being connected with the provincial transmission network 21 or ground/county's transmission network 22；Or,
Zonal basis time-frequency clock signal, the rubidium clock or crystal oscillation are obtained from time-frequency clock STC from zonal basis time-frequency clock LPRTC
Device can according to the zonal basis time-frequency clock signal generation from time-frequency clock signal, and by this from time-frequency clock signal export to
Provincial transmission network 21 or ground/county's transmission network 22 that two grades of Time and Frequency Synchronization nodes 24 of province's Intranet are connected, and pass through the provincial transmission
Net 21 or ground/county's transmission network 22 will be connected from time-frequency clock signal transmission to the provincial transmission network 21 or ground/county's transmission network 22
The two grades of Time and Frequency Synchronization nodes 24 of another province's Intranet connect.
In order to ensure the security reliability of whole Time and Frequency Synchronization coalescing network system, each at least set in synchronous net 2 inside the province
Two province's Intranet one-level Time and Frequency Synchronization nodes 23 are put, are to set two province's Intranet one-level Time and Frequency Synchronization sections in this embodiment
Exemplified by point 23, but the present invention is not limited thereto, and more than two province's Intranet one-level Time and Frequency Synchronizations can be also set according to actual needs
Node 23.Be provided with reference time frequency clock PRTC in one of them province's Intranet one-level Time and Frequency Synchronization node 23, it is another this inside the province
It is provided with net one-level Time and Frequency Synchronization node 23 in zonal basis time-frequency clock LPRTC1, practical application, reference time frequency clock
PRTC should be arranged on most important business site inside the province and transmission website, and zonal basis time-frequency clock LPRTC1 should be arranged on time weight
The business site and transmission website wanted.As shown in figure 1, as the key synchronous net 1 and inside the province common reference time-frequency letter of synchronous net 2
Number source, key synchronization net 1 and 2 two aspects of synchronous net will pass through two province's Intranet one-levels in synchronization net 2 inside the province inside the province
Time and Frequency Synchronization node 23 is connected, therefore, and substantially key synchronous net 1 and inside the province synchronous net 2 jointly comprise above-mentioned
Two province's Intranet one-level Time and Frequency Synchronization nodes 23.In addition, each keeps relatively independent between synchronous net 2 inside the province.Specifically,
It is that inter-provincial transmission network 14 in key synchronous net 1 is same by backbone network time link 13 and two above-mentioned province's Intranet one-level time-frequencies
Step node 23 is connected, and above-mentioned two saves Intranet one-level Time and Frequency Synchronization node 23 by saving Intranet time link 25 and provincial transmission network
22 connections.
By the Time and Frequency Synchronization coalescing network system of the embodiment of the present invention, it can realize that time signal and frequency signal are unified
Transmission and distribution are transmitted there is provided safe and reliable, high-quality time and Frequency Synchronization, and can greatly save the synthesis of the whole network
Construction cost, is easy to unified operation maintenance management, improves operation maintenance management efficiency, save operation maintenance management cost.
In actual applications, the above-mentioned backbone network one-level Time and Frequency Synchronization section for being provided with zonal basis time-frequency clock LPRTC
Point 11 and province's Intranet one-level Time and Frequency Synchronization node 23 can include two-stage cascade structure：LPRTC1 Time and Frequency Synchronizations node and LPRTC2
Time and Frequency Synchronization node, wherein, when the LPRTC1 Time and Frequency Synchronizations node directly obtains benchmark from above-mentioned reference time frequency clock PRTC
Frequency clock signal is synchronized；The LPRTC2 Time and Frequency Synchronizations node then by the LPRTC1 Time and Frequency Synchronizations node from reference time frequency when
Clock PRTC obtains reference time frequency clock signal and synchronized.
And above-mentioned two grades of Time and Frequency Synchronization nodes 12 of backbone network and province's two grades of time-frequencies of Intranet for being provided with from time-frequency clock STC
Three-stage cascade structure can be included in synchronization node 24：STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3 time-frequencies
Synchronization node, wherein, the STC1 Time and Frequency Synchronizations node directly obtains reference time frequency clock signal from reference time frequency clock PRTC and entered
Row is synchronous, or is directly synchronized from LPRTC1 Time and Frequency Synchronizations node acquisition zonal basis time-frequency clock signal；The STC2 time-frequencies
Synchronization node obtains reference time frequency clock signal from reference time frequency clock PRTC by STC1 Time and Frequency Synchronizations node and synchronized, or
Zonal basis time-frequency clock signal is obtained by STC1 Time and Frequency Synchronizations node from LPRTC1 Time and Frequency Synchronizations node to synchronize；Should
STC3 Time and Frequency Synchronizations node obtains reference time frequency clock signal from reference time frequency clock PRTC by STC2 Time and Frequency Synchronizations node and entered
Row is synchronous, or is carried out by STC2 Time and Frequency Synchronizations node from LPRTC1 Time and Frequency Synchronizations node acquisition zonal basis time-frequency clock signal
It is synchronous.
In the Time and Frequency Synchronization coalescing network system of the embodiment of the present invention, the time-frequency reference signal of transmission can only be from top to bottom
One-way transmission, is specifically referred to, reference time frequency clock PRTC produce reference time frequency clock signal LPRTC1 Time and Frequency Synchronizations node,
Pressed between LPRTC2 Time and Frequency Synchronizations node, STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3 Time and Frequency Synchronization nodes
PRTC->LPRTC1->LPRTC2->STC1->STC2->STC3 order one-way transmission.And STC1 Time and Frequency Synchronization nodes can also
Reference time frequency clock signal directly is obtained from reference time frequency clock PRTC, or directly obtains region from LPRTC1 Time and Frequency Synchronizations node
Reference time frequency clock signal.
When it is implemented, the Time and Frequency Synchronization equipment (reference time frequency of output said reference time-frequency clock signal in upstream
Clock PRTC or output area reference time frequency clock signal zonal basis time-frequency clock LPRTC) output transmission signal in can
1588 messages stabbed with precise time, referred to as Time-Frequency Fusion signal are integrated, the Time-Frequency Fusion signal passes through above-mentioned backbone network
After time link 13 or province's Intranet time link 25 are carried and transmitted using 1588 technologies, the Time and Frequency Synchronization equipment in downstream
(receiving the zonal basis time-frequency clock LPRTC of the Time-Frequency Fusion signal or from time-frequency clock STC) then uses UTI or 1588 skills
Art, according to the Time-Frequency Fusion signal can simultaneously recovery time and frequency signal, to realize Time and Frequency Synchronization equipment and the downstream of upstream
Time and Frequency Synchronization equipment Time and Frequency Synchronization.
The Time and Frequency Synchronization coalescing network system of the embodiment of the present invention uses two-tier system and two-stage hierarchical organization, wherein two layers
Framework refers to " key Time and Frequency Synchronization net and inside the province Time and Frequency Synchronization net " two layers, and two-stage hierarchical organization refers to, either key time-frequency is same
Net is walked, still Time and Frequency Synchronization net inside the province, comprising " one-level Time and Frequency Synchronization node and two grades of Time and Frequency Synchronization nodes ".Relative to original
Three-tier architecture and three-level hierarchical organization, be using two-tier system and two-stage hierarchical organization advantage：On the one hand, synchronization is conducive to
The planning of link, can effectively shorten the length of extremely long time link, realize the control for index of being drifted about to the whole network；On the other hand,
Network level can be reduced, socket is become apparent from, is easy to maintenance management.
One of ordinary skill in the art will appreciate that realizing that all or part of step in above-described embodiment method can lead to
Cross program to instruct the hardware of correlation to complete, the program can be stored in a computer read/write memory medium, such as
ROM/RAM, magnetic disc, CD etc..
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present invention
Scope is protected, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (9)
1. a kind of Time and Frequency Synchronization coalescing network system, it is characterised in that described Time and Frequency Synchronization coalescing network system includes：It is key
Synchronous net and multiple nets synchronous inside the province, the key synchronous net are connected respectively with the multiple net synchronous inside the province, wherein,
The key synchronous net includes：Multiple backbone network one-level Time and Frequency Synchronization nodes, two grades of Time and Frequency Synchronization nodes of multiple backbone networks,
A plurality of backbone network time link and multiple inter-provincial transmission networks；
Unidirectionally connected by the backbone network time link and backbone network one-level Time and Frequency Synchronization node between each inter-provincial transmission network
Connect, or unidirectionally connected by two grades of Time and Frequency Synchronization nodes of the backbone network time link and backbone network；
The net synchronous inside the province includes：Provincial transmission network, multiple/county's transmission network, multiple province's Intranet one-level Time and Frequency Synchronization nodes,
Multiple two grades of Time and Frequency Synchronization nodes of province's Intranet and a plurality of province's Intranet time link；
It is unidirectional by province's Intranet time link and province's Intranet one-level Time and Frequency Synchronization node between multiple provincial transmission networks
Connection；
Pass through province's Intranet time link and province's Intranet one-level time-frequency between the provincial transmission network and described/county's transmission network
Synchronization node is unidirectionally connected, or is unidirectionally connected by province's Intranet time link and province's two grades of Time and Frequency Synchronization nodes of Intranet；
It is each describedly/county's transmission network between unidirectionally connected by two grades of Time and Frequency Synchronization nodes of province's Intranet time link and province's Intranet
Connect；
The inter-provincial transmission network is by saving Intranet one-level Time and Frequency Synchronization node described in the backbone network time link and at least two
Connection, saves Intranet one-level Time and Frequency Synchronization node and passes through province's Intranet time link and the provincial biography described in described at least two
Defeated net connection；
Part of nodes sets reference time frequency clock PRTC in the backbone network one-level Time and Frequency Synchronization node, and another part node is set
There is part of nodes in zonal basis time-frequency clock LPRTC, province's Intranet one-level Time and Frequency Synchronization node that reference time frequency clock is set
PRTC, another part node is provided with zonal basis time-frequency clock LPRTC, the reference time frequency clock PRTC and produces reference time frequency
Clock signal, the zonal basis time-frequency clock LPRTC generating regions reference time frequency clock signal；
Be provided with two grades of Time and Frequency Synchronization nodes of described two grades of Time and Frequency Synchronization nodes of backbone network and province's Intranet from time-frequency when
Clock STC, it is described from time-frequency clock STC to receive described reference time frequency clock signal or zonal basis time-frequency clock signal,
And produced according to described reference time frequency clock signal or zonal basis time-frequency clock signal from time-frequency clock signal.
2. Time and Frequency Synchronization coalescing network system according to claim 1, it is characterised in that described inter-provincial transmission network and province
Level transmission network is by least one province's Intranet one-level Time and Frequency Synchronization node for being provided with the reference time frequency clock PRTC and/or at least
One is provided with province's Intranet one-level Time and Frequency Synchronization node connection of the zonal basis time-frequency clock LPRTC.
3. Time and Frequency Synchronization coalescing network system according to claim 2, it is characterised in that described reference time frequency clock
PRTC includes first pair of rubidium clock time frequency unit, two the first DVBs and single or multiple caesium clocks, first pair of described rubidium
Clock time frequency unit receives the first time frequency signal of the first DVB output and the first reference letter of caesium clock output
Number, generate and export comprising very first time signal and first frequency signal according to first time frequency signal and the first reference signal
The reference time frequency clock signal.
4. Time and Frequency Synchronization coalescing network system according to claim 3, it is characterised in that during described zonal basis time-frequency
Clock LPRTC includes second pair of rubidium clock time frequency unit and two the second DVBs, and second pair of described rubidium clock time frequency unit connects
The second time frequency signal of the second DVB output is received, generates and exports comprising second according to second time frequency signal
The zonal basis time-frequency clock signal of time signal and second frequency signal.
5. Time and Frequency Synchronization coalescing network system according to claim 4, it is characterised in that when being provided with the zonal basis
The frequency clock LPRTC backbone network one-level Time and Frequency Synchronization node and province's Intranet one-level Time and Frequency Synchronization node includes two-stage cascade
Structure：LPRTC1 Time and Frequency Synchronizations node and LPRTC2 Time and Frequency Synchronization nodes,
The LPRTC1 Time and Frequency Synchronizations node directly obtains described reference time frequency clock letter from the reference time frequency clock PRTC
Number synchronize；
The LPRTC2 Time and Frequency Synchronizations node is obtained by the LPRTC1 Time and Frequency Synchronizations node from the reference time frequency clock PRTC
Described reference time frequency clock signal is taken to synchronize.
6. Time and Frequency Synchronization coalescing network system according to claim 5, it is characterised in that described from time-frequency clock STC
Rubidium clock or crystal oscillator are inside provided with, it is described to obtain the base from time-frequency clock STC from the reference time frequency clock PRTC
Punctual frequency clock signal, and exported according to the reference time frequency clock signal comprising the 3rd time signal and the 3rd frequency signal
It is described from time-frequency clock signal, or, it is described from time-frequency clock STC from the zonal basis time-frequency clock LPRTC obtain institute
Zonal basis time-frequency clock signal is stated, and from time-frequency clock signal according to zonal basis time-frequency clock signal output.
7. Time and Frequency Synchronization coalescing network system according to claim 6, it is characterised in that be provided with described from time-frequency clock
STC two grades of Time and Frequency Synchronization nodes of backbone network and province's two grades of Time and Frequency Synchronization nodes of Intranet include three-stage cascade structure：During STC1
Frequency synchronization node, STC2 Time and Frequency Synchronizations node and STC3 Time and Frequency Synchronization nodes,
The STC1 Time and Frequency Synchronizations node directly obtains described reference time frequency clock signal from the reference time frequency clock PRTC
Synchronize, or directly obtain described zonal basis time-frequency clock signal from described LPRTC1 Time and Frequency Synchronizations node and carry out together
Step；
The STC2 Time and Frequency Synchronizations node obtains institute by the STC1 Time and Frequency Synchronizations node from the reference time frequency clock PRTC
The reference time frequency clock signal stated is synchronized, or by the STC1 Time and Frequency Synchronizations node from the LPRTC1 Time and Frequency Synchronizations section
Zonal basis time-frequency clock signal described in point acquisition is synchronized；
The STC3 Time and Frequency Synchronizations node obtains institute by the STC2 Time and Frequency Synchronizations node from the reference time frequency clock PRTC
The reference time frequency clock signal stated is synchronized, or by the STC2 Time and Frequency Synchronizations node from the LPRTC1 Time and Frequency Synchronizations section
Zonal basis time-frequency clock signal described in point acquisition is synchronized.
8. Time and Frequency Synchronization coalescing network system according to claim 7, it is characterised in that described reference time frequency clock
PRTC produce the reference time frequency clock signal the LPRTC1 Time and Frequency Synchronizations node, LPRTC2 Time and Frequency Synchronizations node,
PRTC- is pressed between STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3 Time and Frequency Synchronization nodes>LPRTC1->
LPRTC2->STC1->STC2->STC3 order one-way transmission.
9. Time and Frequency Synchronization coalescing network system according to claim 7, it is characterised in that during described zonal basis time-frequency
The zonal basis time-frequency clock signal that clock LPRTC is produced is in the LPRTC1 Time and Frequency Synchronizations node, LPRTC2 Time and Frequency Synchronizations
LPRTC1- is pressed between node, STC1 Time and Frequency Synchronizations node, STC2 Time and Frequency Synchronizations node and STC3 Time and Frequency Synchronization nodes>LPRTC2-
>STC1->STC2->STC3 order one-way transmission.
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| CN109194431B (en) * | 2018-08-13 | 2020-04-21 | 郑州威科姆华大北斗导航科技有限公司 | Clock time-frequency integrated transmission method and device |
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