CN205792636U - Track traffic communication system based on open transmission network network - Google Patents
Track traffic communication system based on open transmission network network Download PDFInfo
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- CN205792636U CN205792636U CN201620353880.5U CN201620353880U CN205792636U CN 205792636 U CN205792636 U CN 205792636U CN 201620353880 U CN201620353880 U CN 201620353880U CN 205792636 U CN205792636 U CN 205792636U
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- network
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- station
- open transmission
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Abstract
This utility model relates to a kind of track traffic communication system based on open transmission network network, including: control centre's end, each station end and rolling stock section's end are provided with open transmission network network transmission equipment, it is sequentially connected composition loop by optical cable every station, described control centre's end, each station end and rolling stock section's end is all connected by a main fiber Path Setup communication network, and described control centre is additionally provided with and the Network Management Equipment of open transmission network network transmission equipment communication connection.This utility model can meet the demand of track traffic communication well, use step multiplexing and a demultiplexing, realize needing flexible allocation bandwidth by user, and realize the transmission of all-transparent, its electrical interface (2M/34M/45M) with standard with external connection and optical interface (STM 1/STM 16C), can connect with various external networks.
Description
Technical field
This utility model relates to field of rail communication, is specifically related to track traffic communication system based on open transmission network network
System.
Background technology
Transmission system is a digital transmission system based on fiber medium, its basic function be for each communication subsystem and
Signaling system, power monitoring (SCADA), AFC system (AFC), train automatic monitoring (ATS), Disaster prevention and alarm (FAS),
The specialty such as equipment monitoring system (BAS), the office automation system provides reliably, redundancy, reconfigurable, channel flexibly,
Become the multiservice transport platform of all information of bearing track traffic circulation.
SDH (synchronous digital transmission system) is the transmission system of the related advisory meeting ITU (International Telecommunication Union), and it can
The strongest by property, reliability, versatility, switching time short (50ms) during fault, it is suitable for holding of TDM business in real-time service
Carry, be the best mode of TDM operation transmission.Along with developing rapidly of IP data service, SDH is in terms of multi service access motility
Limited to.
ATM (asynchronous transfer mode) is a kind of packet-switch technology (packet switch), though maintaining the concept of time slot, but time slot
The information of middle loading carries out respective communication process not in accordance with the fixing cycle, but by the packets headers loaded in time slot
(header) identifies communication process.The bandwidth distribution according to need of network is transmitted by packet with business, makes ATM network need complexity
The control protocols such as network traffics ensure short time-delay and the shake of real time business.Although ATM can dynamic allocation of transmission bandwidth, but
Low-rate traffic must be accessed could be transmitted by ATM circuit artificial service interface.This makes its control protocol complicated, the biography of information
The defeated time delay at each node will be far longer than SDH and transmit standard.This can affect the high information of some requirement of real-times (as
ATS) transmission.
OTN (open transmission network network) transmission system is the transmission platform of an opening, is a kind of in order to realize three nets
(voice, data and image) is unified, and uses the transmission network of the synchronous time division multiplexing mode of dedicated frame structure.Its interface is comprehensive,
Meet the requirement of various information transmission.Use step multiplexing and a demultiplexing, it is achieved need flexible allocation bandwidth by user, and real
The transmission of existing all-transparent, its electrical interface (2M/34M/45M) with standard with external connection and optical interface (STM-1/STM-
16C), can connect with various external networks.
Utility model content
To this end, the utility model proposes track traffic communication system based on open transmission network network, to meet track friendship
The demand of the transmission efficient stable of logical communication speech, data and image.
Concrete scheme is as follows: track traffic communication system based on open transmission network network, including: control centre's end, each
Station end and rolling stock section's end are provided with open transmission network network transmission equipment, are sequentially connected composition loop, institute by optical cable every station
Control centre's end, each station end and the rolling stock section's end stated all is connected by a main fiber Path Setup communication network, described
Control centre is additionally provided with and the Network Management Equipment of open transmission network network transmission equipment communication connection.
Wherein, described open transmission network network transmission equipment be provided with E1 interface, low speed data interface, Ethernet interface,
Analog image interface and 15KHz broadcast audio interface.
Wherein, described open transmission network network transmission equipment is additionally provided with standard electrical interface and optical interface.
Wherein, described open transmission network network transmission equipment includes optical fiber and digital multiplexing equipment, access device, distributing frame
And optical transmitter and receiver.
Optional, described optical transmitter and receiver is N22 Node station or N42 Node station.
Further, a spare fibre passage run with main fiber Channel Synchronous it is additionally provided with.
Further, described main fiber passage and spare fibre passage all use G652B optical fiber.
This utility model has the advantage that
A) automatically reconfiguring: when network makes a mistake, if optical line is by interrupting, Node station fault exits service, OTN
System can reconfigure automatically, automatically enables inner loop, formation single loop network or chain-shaped network and works on.
B) general Node station is arranged: all of Node station all can become the host node machine in network, produces synchronised clock
Network is made to keep synchronizing with tdm data frame.When host node machine fault exits, replaced host node machine by another Node station immediately
Work on.When many places fault occurs on network, in go to the station to meet somebody can the self-built loop of subregion, in each loop, by a joint
Point machine automatically becomes host node machine and is operated.
C) automatically start: because power-off, loop restructuring or a Node station reenter the reasons such as loop work and caused
Work stop, network can automatically restore to original mode of operation after restart, it is not necessary to manual intervention, Node station is in fault solution
Original mode of operation can be automatically returned to after removing.
D) automatically monitoring components and parts: the exigent reliability of optical element, OTN system can monitor these components and parts automatically
Degree of aging, and provide warning information in advance, user can change in time, it is to avoid reconfigure and the partial service of network are subject to
To impact.
The transmission route of this utility model OTN transmission system uses optical cable two ring network, i.e. main ring and standby ring, composition
The self-healing network possessing automatic switchover interrupts, and other business are unaffected.
Accompanying drawing explanation
Fig. 1 is the network topological diagram of this utility model embodiment；
Fig. 2 A is this utility model embodiment rolling stock section transmission equipment interface diagram；
Fig. 2 B is this utility model embodiment station section transmission equipment interface diagram；
Fig. 2 C is this utility model embodiment control centre transmission equipment interface diagram.
Detailed description of the invention
For further illustrating each embodiment, this utility model is provided with accompanying drawing.These accompanying drawings are in this utility model discloses
The part held, it is mainly in order to illustrate embodiment, and the associated description of description can be coordinated former to the running explaining embodiment
Reason.Coordinating with reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and this practicality are new
The advantage of type.Assembly in figure is not necessarily to scale, and similar element numbers is conventionally used to indicate similar assembly.
In conjunction with the drawings and specific embodiments, this utility model is further illustrated.
Refering to Fig. 1, it is shown that this utility model one embodiment OTN (open transmission network network) transmission grid topology knot
Structure, in the present embodiment, control centre's end, each station end and rolling stock section's end are provided with OTN transmission equipment, by optical cable every station successively
Being connected and constitute loop, control centre's end, each station end and rolling stock section's end are all set up communication network by an optical-fibre channel and are connected.
The fiber type of the present embodiment selects G652B optical fiber.The DWDM with abundant wavelength suitably opened by G655 optical fiber
System, meets the needs of two kinds of developing direction of TDM and DWDM simultaneously, and price is more comparatively expensive, the bigger damage of 1310nm window dispersion
Consumption is relatively big and effective area is less.G652C optical fiber eliminates the water absworption peak near 1385nm.Wavelength available scope increases
100nm.Be suitable to tissue CWDM system.In price higher than common G652B.Common G652B optical fiber price is generally the least expensive in three
, also it is currently used most type optical fiber, use requirement can also be met even for 10G dwdm system.Shortcoming is
The transmission range of 10Gbps is limited (70Km), PMD the to be carried out test of existing optical fiber.Control centre is additionally provided with and OTN transmission equipment
The Network Management Equipment of communication connection, and G652B optical fiber is well positioned to meet existing demand.
Refering to Fig. 2 A, 2B and 2C, it is shown that this utility model respectively stand optical transmission device interface signal, OTN optical transport sets
For being provided with E1 interface, ET interface, signaling interface, standard electrical interface and optical interface.Realize putting down with each subsystem by each class interface
The communication of platform and external network communication.
The OTN transmission equipment of the present embodiment includes optical fiber and digital multiplexing equipment, access device, distributing frame, optical transmitter and receiver.OTN
System uses the N22 Node station of 8 groove positions.The interface card that OTN system is provided, is all modular structure.Dicyclo optical fiber forms
Network also can increase new Node station at any time.Dilatation can be carried out as required or increase new business, and soft by webmaster
Part carries out the bandwidth distribution of Added Business neatly.OTN network upgrades to high bandwidth system communication (such as OTN600 liter from low-bandwidth systems
Level is to OTN2500), only need to change optical transceiver module, and without changing node cabinet, power supply and Service Interface Card.Utilize OTN's
ULM card and STR, can connect independent OTN system and SDH system, makes a plurality of circuit of track traffic form multiple fiber optic loop
Net, it is simple to the centralized management of system and monitoring.Existing network, when carrying out the network capacity extension and increasing new business, is transported by OTN
Capable do not produce impact
The OTN technical characterstic of the present embodiment is a step multiplexing, has 1+1 loop self-healing function；Use MJPEG or MPEG2 number
Word Image Compression, has digitized image handoff functionality (VCC), it is possible to provide fine definition monitoring image etc.；Integrated
NMS can directly manage independent port, is suitable for the access of the various integrated service of track traffic.
OTN uses modularized design, it is possible to along with new demand and service synchronized development.Business to be increased, can use
Add the mode of interface module, more convenient easy.
OTN network in the present embodiment uses and runs the most reliable dicyclo self-healing network structure, and under normal circumstances, main ring optical fiber leads to
Road undertakes the transformation task of all data, and inner loop is standby.But inner loop keeps Tong Bu the most just to monitor main ring with the main ring moment
Often run, in order to provide passage to track side telephone and provide real loop line alternate channel, with optical cable for interstation telephone and emergency communication
(outer jacket should be low cigarette, fire-retardant, Halogen anti-solar ultraviolet spoke to lay an oil-filled steel-tape armouring of 42*2*0.7 with pathway
Penetrate).This cable uses advantages of good shielding performance, the electrified cable of strong interference immunity, insulation to use oil-filled mode.
The present embodiment communication is stable, and OTN system uses optical fiber as transmission medium, has the lowest bit error rate.OTN
Optical interface card can continue to monitor the optical signal received, if power drops to the gauge of default, corresponding announcement can be produced
Alert, remind user to go to detect degree of aging or the quality problems of optical fiber of optical element；Optical interface card is also to the number received simultaneously
According to verifying, confirm the accuracy of data transmission, thus ensure that the reliability of transmission.The bit error rate of fiber-optic transfer
Assessment at least wants 10-9.These parameters can show on the PC screen of network management.If the system detects that too much error in data
(code violation), it can automatically enable standby optical line by or form loop.
Although specifically show and describe this utility model in conjunction with preferred embodiment, but those skilled in the art should
This is understood, in the spirit and scope of the present utility model limited without departing from appended claims, in form and details
On this utility model can be made a variety of changes, be protection domain of the present utility model.
Claims (7)
1. track traffic communication system based on open transmission network network, it is characterised in that including: control centre's end, each station
End and rolling stock section's end are provided with open transmission network network transmission equipment, are sequentially connected composition loop by optical cable every station, described
Control centre's end, each station end and rolling stock section's end are all connected by a main fiber Path Setup communication network, described control
Center is additionally provided with and the Network Management Equipment of open transmission network network transmission equipment communication connection.
System the most according to claim 1, it is characterised in that described open transmission network network transmission equipment is provided with E1 and connects
Mouth, low speed data interface, Ethernet interface, analog image interface and 15KHz broadcast audio interface.
System the most according to claim 1, it is characterised in that described open transmission network network transmission equipment is additionally provided with mark
Quasi-electrical interface and optical interface.
System the most according to claim 1, it is characterised in that described open transmission network network transmission equipment includes optical fiber
Digital multiplex equipment, access device, distributing frame and optical transmitter and receiver.
System the most according to claim 4, it is characterised in that described optical transmitter and receiver is N22 Node station or N42 Node station.
System the most according to claim 1, it is characterised in that be additionally provided with the standby light run with main fiber Channel Synchronous
Fine passage.
7. according to the system described in claim 1 or 6, it is characterised in that described main fiber passage and spare fibre passage are equal
Use G652B optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620353880.5U CN205792636U (en) | 2016-04-25 | 2016-04-25 | Track traffic communication system based on open transmission network network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620353880.5U CN205792636U (en) | 2016-04-25 | 2016-04-25 | Track traffic communication system based on open transmission network network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205792636U true CN205792636U (en) | 2016-12-07 |
Family
ID=57411151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620353880.5U Expired - Fee Related CN205792636U (en) | 2016-04-25 | 2016-04-25 | Track traffic communication system based on open transmission network network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792636U (en) |
-
2016
- 2016-04-25 CN CN201620353880.5U patent/CN205792636U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |