CN208971533U - A kind of multiple submerged stations signal transmission network systems - Google Patents
A kind of multiple submerged stations signal transmission network systems Download PDFInfo
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- CN208971533U CN208971533U CN201821895417.9U CN201821895417U CN208971533U CN 208971533 U CN208971533 U CN 208971533U CN 201821895417 U CN201821895417 U CN 201821895417U CN 208971533 U CN208971533 U CN 208971533U
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Abstract
The utility model is a kind of multiple submerged stations signal transmission network systems, and the downlink signal processing module and n uplink signal processing module of the bank base control centre connection of this system bank base central station are connected to (n+1) wave wavelength division multiplexer；Underwater control center, signal processing module and the optical splitter of each submerged stations are sequentially connected；(n+1) wave wavelength division multiplexer of bank base central station connects the optical splitter of the first submerged stations, and the optical splitter of the first submerged stations is connected to the optical splitter of the second submerged stations, and successively grade is coupled to the optical splitter of the n-th submerged stations.The downlink optical signal of bank base central station is divided through each optical splitter to each submerged stations when operation, and the uplink optical signal of the different wave length of each submerged stations is synthesized by optical splitter to be sent to bank base central station all the way and demultiplex through wavelength division multiplexer.The utility model transmits the uplink and downlink signals of multiple websites, low in energy consumption compared with existing system, small in size, high reliablity, long transmission distance with single transmission fiber.
Description
Technical field
The utility model relates to underwater slow-type analog signal acquisition and transmission technique field, specially a kind of multiple underwater stations
Point signal transmission network system.
Background technique
With underwater optical fibre network and national marine strategy development, the undersea detection platform of multiple types, subsurface communication are flat
Platform, a large amount of appearance of underwater navigation confrontation platform and underwater Evaluation Platform etc..It is essential that water in the building of underwater equipment
Lower communication network.The advantages of optical fiber transmission, good confidentiality light-weight with its, it is applied to subsurface communication network more and more
Construction and acquisition, detection and transmission for underwater equipment signal.
Underwater equipment is very difficult due to maintenance, and cost is compared with ground-based equipment at the increase of multiple, and user is to communication system
Reliability, stability and transmission range etc. made higher requirement, simultaneously because the complexity of water-bed power supply,
It is also extremely harsh to the power consumption requirements of equipment.
Current more common data signal transmission mode is using dedicated multiplexing chip and using the GTX/ inside FPGA
The parallel data signal of transmission required between underwater equipment and bank base central station is first converted into serially by GTP module two ways
Signal, re-modulation are converted into optical signal and are transmitted.Signal transmission rate generally is 1.25G or higher in transmission fiber,
And the transmission mode of multiple connection can in an optical fiber simultaneous transmission multichannel unlike signal.But underwater information system is come
It says following Railway Project: (needing the signal rate acquired all to exist at present one is the signal rate of underwater equipment is all lower
Within 100kHz), it is transmitted using the optical fiber of the rate of 1.25G, most transmission bandwidth is wasted.The second is using
GTX/GTP module both transmission modes inside dedicated multiplexing chip or FPGA, need using 1.25G matched with optical fiber or
The device of person's higher rate, this just makes equipment power dissipation higher.The increase of power consumption is for harsher underwater equipment of powering
It is fatal defect.This reduces the reliabilities of underwater equipment simultaneously.
Existing underwater information network is the central station of a bank base and the letter for being connected thereto n submerged stations composition mostly
Number transmission network.Bank base central station is responsible for signal processing, i.e. the collection of completion submerged stations signal summarize and to submerged stations into
Row control and status monitoring.
There are two types of common underwater information networks: one is bank base central station and the one-to-one connection of each submerged stations, when
When bank base central station sends control data to multiple submerged stations, bank base central station is divided into n group identical data for data are controlled, often
Group data are used alone a transmission channel and carry out one-to-one transmission to underwater n website respectively.Each submerged stations are into bank base
Center station is also by independent transmission channel.This network implementations is fairly simple, but bank base central station is due to number of channels
Increase will lead to volume and power consumption increases.Simultaneous transmission channel increases with the increase of website, required number of channels will with it is underwater
Website is consistent, and due to the particularity of its application in underwater information network, transmission channel link is limited, unless being initially laid with
When reserved channel, otherwise network does not have scalability.
Another cascade system networking, bank base central station are connect with first website, and first website connects second station
Point is consecutively connected to n-th of website.Bank base central station sends control data to first website, during first website is used as
After sending control data to second website, second website is sent still further below, is thus sent in sequence to n-th of website.Respectively
When submerged stations send the data that it is acquired to bank base central station, the data of n-th of website are first sent to (n-1)th website, the
The data of the data of n-th of website and itself website are up to the n-th -2 stations together as relaying after n-1 website reception
Point is so up to always first website.Cascade system bank base central station does not need to do other additional configurations, but due to underwater
Website will be completed to forward as relaying, need to increase its power consumption and volume.In addition the form of uplink step by step, desired signal transmission belt
Width gradually increases.There is trunk failure and certainly will influence all station datas thereafter losing in especially one website in cascade network midway
It loses, reduces the reliability of system.
Utility model content
The purpose of this utility model is to design a kind of multiple submerged stations signal transmission network systems, this system bank base center
It stands and constitutes sequentially connected cascade data signal transmission network with multiple submerged stations, configured in each submerged stations passive asymmetric
Optical splitter, Cong Yigen transmission fiber transmission downlink optical signal are distributed to each submerged stations；The uplink linght of each submerged stations is believed
Number wavelength difference, the optical splitter of two-way function is by the uplink optical signal synthesis of the multiple submerged stations same biography of optical signals all the way
It loses fibre and is transmitted to bank base central station and demultiplex again.Meet underwater information network signal transmission low-power consumption, small size, low rate
Particular/special requirement realizes the sampling of multichannel analog signals and remote transmission in underwater information network.
A kind of multiple submerged stations signal transmission network systems of the utility model design include bank base central station and
N submerged stations connected to it, the bank base central station include at a downlink signal of bank base control centre and its connection
Manage module, n uplink signal processing module, a clock module and (n+1) wave wavelength division multiplexer.Clock module provides
Reference clock be respectively connected to downlink signal processing module and n uplink signal processing module；(n+1) wave wavelength division multiplexer connects
Downlink signal processing module and n uplink signal processing module, send downlink signal into transmission network, by n uplink signal point
It is sent to n uplink signal processing module.Each submerged stations include underwater control center and the signal processing module that is attached thereto,
And the optical splitter being connect with signal processing module.(n+1) the wave wavelength division multiplexer of bank base central station is connected to through optical fiber
The optical splitter of one submerged stations, the optical splitter of the first submerged stations are connected to the optical branching of the second submerged stations through optical fiber
Device so successively cascades, until the optical splitter of the n-th submerged stations.
N≤8.
The spacing of the bank base central station and the first submerged stations, the spacing of each adjacent submerged stations are 10km~14km,
Farthest submerged stations are less than or equal to 100km at a distance from bank base central station.
The optical splitter is passive wideband asymmetrical beam splitter, and operating wavelength range is 1270nm~1610nm.
The splitting ratio of the optical splitter of each submerged stations is different, and the optical splitter of the first submerged stations assigns to this signal processing module light letter
Number power account for the ratio P up to this submerged stations optical signal power11=1%, hereafter each submerged stations are according to this website of arrival
Optical signal power, calculate this submerged stations optical splitter to meet optical power needed for this submerged stations and assign to this signal processing mould
Block optical signal power accounts for the ratio P up to this submerged stations optical signal poweri1.The integer that i is 1 to n.
The optical power S that bank base central station issues, it is that S subtracts arrival this is underwater that the optical power for reaching the i-th submerged stations, which is Si,
Attenuation M on the transmission fiber before website1iWith the attenuation M on each optical splitter2i。
Every kilometer of attenuation m=0.22~0.25dB/km on the transmission fiber, bank base central station and the first submerged stations
Between transmission fiber length be D1Km, the transmission fiber length between the second submerged stations and the first submerged stations are D2Km, such as
This analogizes, and the transmission fiber length between the n-th submerged stations and the (n-1)th submerged stations is Dnkm.So reach the i-th underwater station
Attenuation before point on the transmission fiber
In the attenuation M of i-th submerged stations its optical splitter2i=10 × lg (Pi2), Pi2It is assigned to for the i-th optical splitter
Next submerged stations optical signal power accounts for the ratio up to this submerged stations optical signal power, Pi1 +Pi2=1.In the i-th water
There are i-1 submerged stations before lower website, the sum of the attenuation of i-1 submerged stations optical splitter before reaching the i-th submerged stations
Reach the optical power S of the i-th submerged stationsi=S-M1i-SM2i。
It is assigned to the optical power E of the i-th submerged stations signal processing moduleiMinimum value is -35dBm, Ei>=-35dBm,
Si-10×lg(Pi1)=Ei
Si-10×lg(Pi1)≥-35
The wavelength for the downlink optical signal that the bank base central station issues is λ0The optical splitter of each submerged stations issues
Uplink optical signal wavelength be λ1、λ2、……、λn, λ1、λ2、……、λnBetween wavelength difference use CWDM mode when be equal to or
Greater than 20nm, using being equal to or more than 2nm, λ when DWDM mode0With λ1、λ2、……、λnAny of between wavelength difference be equal to
Or it is greater than 150nm.
The downlink signal processing module of the bank base central station includes being sequentially connected the analog-to-digital conversion shaping submodule block connect, answering
Submodule and electro-optic conversion submodule are connect, the reference clock that the clock module of bank base central station generates accesses multiple connection submodule.
N uplink signal processing module structure of bank base central station is identical, and each uplink signal processing module includes successively
Connected photoelectric conversion submodule, solution multiple connection submodule, digital-to-analogue conversion submodule and driven submodule, gained submerged stations it is upper
The control centre of row signal feeding bank base central station.The reference clock that the clock module of bank base central station generates also accesses solution multiple connection
Submodule.
The electro-optic conversion submodule of the bank base central station downlink signal processing module and each uplink signal processing module
Photoelectric conversion submodule is the SFF welded encapsulation formula optical module with data diagnosis function (DDM).
The signal processing module structure of each submerged stations is identical, logical including the down going channel being connected with optical splitter and uplink
Road, down going channel include OE transform subblock, demultiplex module and DA conversion/driven submodule, and OE transform subblock will be from
Optical splitter obtains the optical signal that bank base central station is sent, and is converted to electric signal and is sent into demultiplex module, solve and line number
Word signal and reference clock access DA conversion/driven submodule, and obtained analog signal is sent into water after filter shape drives
Lower website control centre.Data feedback channel includes EO transform subblock, multiplexing submodule and AD conversion/shaping submodule block, underwater station
The simulation uplink signal of point control centre acquisition is sent into AD conversion/shaping submodule block；Conversion gained digital signal it is shaped after and
Reference clock access multiplexing submodule together, is multiplexed with uplink signal, then through EO transform subblock, after electro-optic conversion wavelength is
λiOptical signal be sent into optical splitter.
When a kind of multiple submerged stations signal transmission network systems operation of the utility model design, under bank base central station
The transmission of row signal to each submerged stations is specific as follows:
The downlink signal that the control centre of bank base central station issues is introduced into analog-to-digital conversion shaping submodule block and is converted to number
Signal and shaping, then access multiple connection submodule and multiple connection is carried out to signal using the reference clock that clock module is sent into, enter later
Electro-optic conversion submodule, is converted to wavelength X0Downlink optical signal be sent into (n+1) wave wavelength division multiplexer.
(n+1) λ that wave wavelength division multiplexer issues bank base central station0The downlink optical signal of wavelength and each submerged stations n are a
The uplink optical signal of different wave length is multiplexed into optical signal all the way, transmits on optical fiber, and downlink optical signal is input to the first underwater station
First optical splitter of point, the first optical splitter are asymmetric by the downlink optical signal of input by the splitting ratio of this submerged stations setting
Ground is divided into two-way, and less optical signal is sent into the first submerged stations signal processing module, the more optical signal edge of another way all the way
Transmission fiber continues traveling downwardly the second optical splitter for reaching the second submerged stations, and the second optical splitter is by the setting of this submerged stations
The downlink optical signal of input is asymmetricly divided into two-way by splitting ratio, and less optical signal is sent into the second submerged stations signal all the way
Processing module, the more optical signal of another way continue traveling downwardly the third optical splitter for reaching third submerged stations along transmission fiber；
So cascade downlink signal is sent to the n-th optical splitter of the n-th submerged stations, and the n-th optical splitter is divided as the setting of this submerged stations
Light is than being asymmetricly divided into two-way for the downlink optical signal of input, and less optical signal is sent at the n-th submerged stations signal all the way
Module is managed, the more optical signal of another way extends spare as system.
The signal processing module of each submerged stations is identical to the processing of downlink signal, the less light letter that optical splitter separates
Number be sent into signal processing module down going channel, be introduced into OE transform subblock, by downlink optical signal be converted to high speed serialization letter
Number it is input to demultiplex module, parallel data signal and same with the clock of bank base central station is solved from high-speed serial signals
The reference clock of step, reference clock input DA conversion/driven submodule, AD conversion/shaping submodule block and multiplexing submodule simultaneously
Block, each submodule of submerged stations, which is all made of in downlink signal, to be restored resulting reference clock and handles signal, is made underwater
Station clock is synchronous with bank base central station clock, it is ensured that system clock is unified, provides for the subsequent signal processing of bank base central station
It is convenient.Parallel data signal accesses DA conversion/driven submodule, when DA conversion/driven submodule is using the reference recovered
Clock carries out the digital-to-analogue conversion of parallel data signal, and obtained analog signal accesses submerged stations control through filter shape and driving
Center.
The transmission of uplink signal to the bank base central station of each submerged stations acquisition is specific as follows:
N-th submerged stations control centre is by the acquisition of this submerged stations and treated letter of the uplink signal through this submerged stations
The wavelength that number processing module handles to obtain this submerged stations is λnUplink optical signal be sent into its connection the n-th optical splitter, n-th
Optical splitter is output to transmission fiber；When the (n-1)th optical splitter for reaching the (n-1)th submerged stations, the (n-1)th optical splitter will
This submerged stations wavelength is λn-1Uplink optical signal and the previous submerged stations wavelength sent of transmission fiber be λnUplink linght letter
Number synthesis optical signal all the way, continues to transmit along transmission fiber uplink, so cascade, to the first optical splitter of the first submerged stations
It is λ by wavelengthn、λn-1、……、λ1Uplink optical signal synthesis optical signal all the way, be sent to bank base center along transmission fiber uplink
The multiplexing optical signal of submerged stations uplink is demultiplexing as n by (n+1) the wave wavelength division multiplexer stood, (n+1) wave wavelength division multiplexer
The optical signal of different wave length is distributed to n uplink signal processing module of bank base central station.
The signal processing module of each submerged stations is identical to the processing of uplink signal, and submerged stations control centre will be originally underwater
The uplink signal that the preparation of website acquisition is transmitted to bank base central station is sent into the data feedback channel of signal processing module, is introduced into AD and turns
/ shaping submodule block is changed, which simulates uplink signal using resulting reference clock work is restored in downlink signal
Signal filters, impedance matching and A/D are converted, and obtains digital signal, is sent into multiplexing submodule, equally uses and restore in downlink signal
Digitized uplink signal is multiplexed to high-speed serial signals all the way and is input to EO transform subblock by resulting reference clock, will be electric
Signal conversion cost submerged stations set the optical signal of wavelength, are sent into optical splitter.
The n uplink signal processing module operation of bank base central station is identical.(n+1) wave wavelength division multiplexer believes the light of multiplexing
The optical signal for number being demultiplexing as n different wave length is distributed to corresponding uplink signal processing module, is introduced into photoelectric conversion submodule
Block completes the conversion, shaping and impedance matching of optical signal to electric signal；Conversion gained electric signal is input to solution multiple connection submodule,
The clock signal for solving parallel digital signal from high-speed serial signals and synchronizing is sent into digital-to-analogue conversion submodule, digital-to-analogue
Transform subblock carries out digital-to-analogue conversion and filter shape to parallel digital signal using the clock signal that solution multiple connection submodule provides,
It is sent into driven submodule and output is driven to signal, while bank base central station will be output to after the state level signal shaping of uplink
Control centre.
Compared with prior art, the advantages of a kind of multiple submerged stations signal transmission network systems of the utility model are as follows: bank
Base central station and multiple submerged stations constitute the transmission network of data-signal, each using passive wideband asymmetrical beam splitter
The optical splitter of submerged stations selects different splitting ratios according to it at a distance from central station, under the transmission of single transmission fiber
Traveling optical signal is distributed to each submerged stations；The uplink optical signal wavelength of each submerged stations is different, the optical splitter of two-way function
By the synthesis of the uplink optical signals of multiple submerged stations, the same transmission fiber of optical signals is transmitted to bank base central station and demultiplexes again all the way
With.Take full advantage of the bandwidth of optical fiber transmission and the reception dynamic range of each optical module；It is substantially reduced submerged stations simultaneously
Power consumption and volume, power consumption and volume reduce 25% or more compared with active relaying and point-to-point transmission, and submerged stations are practical to be surveyed
Examination power consumption is reduced to 2.6w by 3.5w, realize on the bank with the lossless of underwater multiplex analog signal, high reliability, low-power consumption, long distance
From transmission, simultaneously because transmitting the uplink and downlink signals of all submerged stations using single-core fiber, the difficulty of system laying is reduced
And cost.
Detailed description of the invention
Fig. 1 is multiple submerged stations signal transmission network system embodiment entire block diagrams；
Fig. 2 is the downlink signal processing module structural block diagram of bank base central station in Fig. 1；
Fig. 3 is some uplink signal processing module structural block diagram of bank base central station in Fig. 1；
Fig. 4 is the signal processing module structural block diagram of some submerged stations in Fig. 1.
Specific embodiment
The overall structure of this multiple submerged stations signal transmission network system embodiment is as shown in Figure 1, include a bank base
Central station and 5 submerged stations connected to it, this example bank base central station include under one of bank base control centre and its connection
Row signal processing module, 5 uplink signal processing modules, a clock module and a 6 wave wavelength division multiplexers.Clock module mentions
The reference clock of confession is respectively connected to downlink signal processing module and 5 uplink signal processing modules；Under the connection of 6 wave wavelength division multiplexers
Downlink signal is sent into transmission network by row signal processing module and 5 uplink signal processing modules, while by 5 uplink signals
It is distributed to 5 uplink signal processing modules.Each submerged stations include underwater control center and the signal processing module that is attached thereto,
And the optical splitter being connect with signal processing module.6 wave wavelength division multiplexers of bank base central station are connected to the first water through optical fiber
The optical splitter of lower website, the optical splitter of the first submerged stations are connected to the optical splitter of the second submerged stations through optical fiber, such as
This is successively cascaded, until the optical splitter of the 5th submerged stations.
The adjacent spacing of the spacing of this example bank base central station and the first submerged stations, each submerged stations is 12km, farthest
Submerged stations at a distance from bank base central station be 60km.
This example optical splitter is passive broadband asymmetrical beam splitter, operating wavelength range be 1270nm~
1610nm.The splitting ratio of the optical splitter of each submerged stations is different, and the first submerged stations assign to this signal processing module light letter
Number power accounts for the ratio P up to this submerged stations optical signal power11=1%, assign to the optical signal power institute of the second submerged stations
Account for the ratio P up to this submerged stations optical signal power12=99%, hereafter each submerged stations are according to the light for reaching this submerged stations
Signal power calculates optical splitter and assigns to this submerged stations signal processing module light to meet optical power needed for this submerged stations
Signal and the ratio P for assigning to next stage submerged stations optical signali1,Pi2；Pi1+Pi2=1.This example P21=1%, P22=99%；P31
=2%, P32=98%；P41=5%, P42=95%；P51=5%, P52=95%.
The optical power S that this example bank base central station issues, the optical power for reaching the first submerged stations is S1=0dBm, the value
Bank base central station, which is subtracted, for S reaches attenuation M on the transmission fiber before the first submerged stations11。
Every kilometer of attenuation m=0.22~0.25dB/km, bank base central station and the first water when signal transmits in a fiber
Transmission fiber length between lower website is 12km, and the transmission fiber length between each adjacent submerged stations is 12km, then
Reach attenuation on the transmission fiber before the i-th submerged stations
In the attenuation M of i-th submerged stations its optical splitter2i=10 × lg (Pi2)Pi2It is assigned to down for the i-th optical splitter
One submerged stations optical signal power accounts for the ratio up to this submerged stations optical signal power.Before the i-th submerged stations
There are i-1 submerged stations, the sum of the attenuation of i-1 submerged stations optical splitter before reaching the i-th submerged stations
Reach the optical power S of the i-th submerged stationsi=S-M1i-SM2i。
It is assigned to the optical power E of the i-th submerged stations signal processing moduleiMinimum value is -35dBm, Ei>=-35dBm,
Si-10×lg(Pi1)=Ei
Si-10×lg(Pi1)≥-35
This example uses CWDM mode, and the wavelength for the downlink optical signal that bank base central station issues is λ0=1310nm.This example is each
The wavelength for the uplink optical signal that the optical splitter of submerged stations issues is respectively λ1=1490nm, λ2=1510nm, λ3=
1530nm、λ4=1550nm, λ5=1570nm.
The structure of the downlink signal processing module of this example bank base central station is as shown in Fig. 2, include being sequentially connected the modulus connect
Conversion shaping submodule, multiple connection submodule and electro-optic conversion submodule, the reference clock that the clock module of bank base central station generates
Access multiple connection submodule.
5 uplink signal processing module structures of bank base central station are identical, as shown in figure 3, each uplink signal handles mould
Block includes the photoelectric conversion submodule being sequentially connected, solution multiple connection submodule, digital-to-analogue conversion submodule and driven submodule, underwater station
The uplink signal of point is sent into the control centre of bank base central station.The reference clock that the clock module of bank base central station generates also accesses
Solve multiple connection submodule.
The electro-optic conversion submodule of this example bank base central station downlink signal processing module and each uplink signal processing module
Photoelectric conversion submodule is the SFF welded encapsulation formula optical module with data diagnosis function (DDM).Bank base central station is examined by data
Slave interrupt interface in real time in monitoring system all electrooptic conversion modules and photoelectric conversion submodule working condition.
The signal processing module structure of each submerged stations of this example is identical, as shown in figure 4, including under being connected with optical splitter
Row of channels and data feedback channel, down going channel include OE transform subblock, demultiplex module and DA conversion/driven submodule, OE
Transform subblock will obtain the optical signal that bank base central station is sent from optical splitter, is converted to electric signal and is sent into demultiplexing submodule
Block, the parallel digital signal solved and reference clock access DA conversion/driven submodule, obtained analog signal and through filtering
Submerged stations control centre is sent into after shaping driving.Data feedback channel includes EO transform subblock, multiplexing submodule and AD conversion/whole
The simulation uplink signal of shape submodule, the acquisition of submerged stations control centre is sent into AD conversion/shaping submodule block；Conversion gained number
After signal is shaped and reference clock access multiplexing submodule together, it is multiplexed with uplink signal, then through EO transform subblock, electric light
Wavelength is obtained after converting as λiOptical signal be sent into optical splitter.
The optical signal operating parameter guide look of each submerged stations in this multiple submerged stations signal transmission network system embodiment
Table as shown in Figure 1, wherein the decaying of the optical power in the transmission fiber of 12km be calculated as 3dB, the two-way light that each optical splitter separates
Signal attenuation is specifically shown in the following table 1.
Table 1: the optical signal operating parameter list of each submerged stations of this system
Upper table lists the case where 5 submerged stations of this example, and the input optical power of the 1st row submerged stations subtracts in upper table
2 rows attenuation on the transmission fiber and the 4th row optical splitter assign to the attenuated optical signal amount of next submerged stations (less than 1dBm
Insertion loss calculated according to 1dBm) to get the optical power for being output to next submerged stations to the 7th row.Each submerged stations OE
Minimum-the 29dBm of the received optical power of transform subblock.It is connect under 155M rate by the technique of existing optical module, technology
Sensitivity is received generally all in -35dBm, 5 submerged stations can be met the requirements.5th submerged stations output is ready for use optical signal power
It is that there are extension surpluses for system for -20dBm.
The underwater information transmission network that the utility model uses asymmetric broadband optical splitter to set up, uses passive optical branching
The networking of device substitutes the networking mode of common active relaying, realizes the synchronous transfer of multiple submerged stations signals, solves
The problem of active relaying bring large volume, high power consumption.Passive optical splitter and each submerged stations signal processing module simultaneously
Electric property it is unrelated, the failure of the electric function of some submerged stations signal processing module will not be underwater to other in network
The uplink and downlink signals of website have an impact, and solve a submerged stations failure in active relaying mode, subsequent submerged stations
The problem of all effected, substantially increases the reliability of system.
Above-described embodiment is only further described the purpose of this utility model, technical scheme and beneficial effects
Specific case, the utility model are not limited to this.All any modifications made within the open scope of the utility model, etc.
With replacement, improvement etc., it is included in the protection scope of the present invention.
Claims (8)
1. a kind of multiple submerged stations signal transmission network systems, including a bank base central station and n connected to it is underwater
Website, the bank base central station include bank base control centre and its a downlink signal processing module of connection, n uplink signal
Processing module, a clock module and (n+1) wave wavelength division multiplexer；The reference clock that clock module provides is respectively connected to down
Row signal processing module and n uplink signal processing module；(n+1) wave wavelength division multiplexer connection downlink signal processing module and n
A uplink signal processing module；Each submerged stations include underwater control center and the signal processing module that is attached thereto, Yi Jiyu
The optical splitter of signal processing module connection；(n+1) the wave wavelength division multiplexer of bank base central station is connected to first under water through optical fiber
The optical splitter of website, the optical splitter of the first submerged stations are connected to the optical splitter of the second submerged stations through optical fiber, so
It successively cascades, until the optical splitter of the n-th submerged stations；
N≤8.
2. multiple submerged stations signal transmission network systems according to claim 1, it is characterised in that:
The spacing of the bank base central station and the first submerged stations, the spacing of each adjacent submerged stations are 10km~14km, farthest
Submerged stations at a distance from bank base central station be less than or equal to 100km.
3. multiple submerged stations signal transmission network systems according to claim 1, it is characterised in that:
The optical splitter is passive wideband asymmetrical beam splitter, and operating wavelength range is 1270nm~1610nm；Each water
The splitting ratio of the optical splitter of lower website is different, and the optical splitter of the first submerged stations assigns to this signal processing module optical signal
Power accounts for the ratio P up to this submerged stations optical signal power11=1%, hereafter each submerged stations are according to the light for reaching this website
Signal power calculates this submerged stations optical splitter to meet optical power needed for this submerged stations and assigns to this signal processing module light
Signal power accounts for the ratio P up to this submerged stations optical signal poweri1, i be 1 to n integer.
4. multiple submerged stations signal transmission network systems according to claim 3, it is characterised in that:
The optical power S that the bank base central station issues, the optical power for reaching the i-th submerged stations is SiIt is subtracted for S and reaches the underwater station
Attenuation M on the transmission fiber before point1iWith the attenuation M on each optical splitter2i, i.e. Si=S-M1i-M2i；
Every kilometer of attenuation m=0.22~0.25dB/km on the transmission fiber, between bank base central station and the first submerged stations
Transmission fiber length be D1Km, the transmission fiber length between the second submerged stations and the first submerged stations are D2Km, it is such as such
It pushes away, the transmission fiber length between the n-th submerged stations and the (n-1)th submerged stations is Dnkm；It is being passed before reaching the i-th submerged stations
Lose the attenuation on fibre
In the attenuation M of i-th submerged stations its optical splitter2i=10 × lg (Pi2), Pi2For the i-th optical splitter
The ratio that next submerged stations optical signal power accounts for reaching this submerged stations optical signal power is assigned to, it is underwater i-th
There are i-1 submerged stations before website, the sum of the attenuation of i-1 submerged stations optical splitter before reaching the i-th submerged stations
Reach the optical power S of the i-th submerged stationsi=S-M1i-SM2i；
It is assigned to the optical power E of the i-th submerged stations signal processing moduleiMinimum value is -35dBm, Ei>=-35dBm,
Si-10×lg(Pi1)=Ei
Si-10×lg(Pi1)≥-35
5. multiple submerged stations signal transmission network systems according to claim 1, it is characterised in that:
The wavelength for the downlink optical signal that the bank base central station issues is λ0, the optical splitter of each submerged stations issues upper
The wavelength of traveling optical signal is λ1、λ2、……、λn, λ1、λ2、……、λnBetween wavelength difference use CWDM mode when be equal to or more than
20nm, using when DWDM mode be equal to or more than 2nm；λ0With λ1、λ2、……、λnAny of between wavelength difference be equal to or greatly
In 150nm.
6. multiple submerged stations signal transmission network systems according to claim 1, it is characterised in that:
The downlink signal processing module of the bank base central station includes being sequentially connected the analog-to-digital conversion shaping submodule block connect, multiple connection
Module and electro-optic conversion submodule, the reference clock that the clock module of bank base central station generates access multiple connection submodule；
N uplink signal processing module structure of bank base central station is identical, and each uplink signal processing module includes being sequentially connected
Photoelectric conversion submodule, solution multiple connection submodule, digital-to-analogue conversion submodule and driven submodule, the uplink letter of gained submerged stations
Number be sent into bank base central station control centre.The reference clock that the clock module of bank base central station generates also accesses solution multiple connection submodule
Block.
7. multiple submerged stations signal transmission network systems according to claim 6, it is characterised in that:
The electro-optic conversion submodule of the bank base central station downlink signal processing module and the photoelectricity of each uplink signal processing module
Transform subblock is the SFF welded encapsulation formula optical module with data diagnosis function.
8. multiple submerged stations signal transmission network systems according to claim 1, it is characterised in that:
The signal processing module structure of each submerged stations is identical, including the down going channel and data feedback channel being connected with optical splitter,
Down going channel includes OE transform subblock, demultiplex module and DA conversion/driven submodule, and OE transform subblock will be from light point
Road device obtains the optical signal that bank base central station is sent, and is converted to electric signal and is sent into demultiplex module, the Parallel Digital letter solved
Number and reference clock access DA conversion/driven submodule, obtained analog signal is sent into after filter shape drives under water stands
Point control centre；Data feedback channel includes EO transform subblock, multiplexing submodule and AD conversion/shaping submodule block, submerged stations control
The simulation uplink signal of central data processed is sent into AD conversion/shaping submodule block；After conversion gained digital signal is shaped and refer to
Clock access multiplexing submodule together, is multiplexed with uplink signal, then through EO transform subblock, after electro-optic conversion wavelength is λi's
Optical signal is sent into optical splitter.
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Cited By (2)
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| CN109302259A (en) * | 2018-11-16 | 2019-02-01 | 中国电子科技集团公司第三十四研究所 | A kind of multiple submerged stations signal transmission network systems and operation method |
| CN115065411A (en) * | 2022-05-18 | 2022-09-16 | 中铁第四勘察设计院集团有限公司 | Data transmission control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302259A (en) * | 2018-11-16 | 2019-02-01 | 中国电子科技集团公司第三十四研究所 | A kind of multiple submerged stations signal transmission network systems and operation method |
| CN115065411A (en) * | 2022-05-18 | 2022-09-16 | 中铁第四勘察设计院集团有限公司 | Data transmission control system |
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