CN109347712A - A kind of network structure based on rail traffic - Google Patents
A kind of network structure based on rail traffic Download PDFInfo
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- CN109347712A CN109347712A CN201811176790.3A CN201811176790A CN109347712A CN 109347712 A CN109347712 A CN 109347712A CN 201811176790 A CN201811176790 A CN 201811176790A CN 109347712 A CN109347712 A CN 109347712A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims description 4
- 206010033799 Paralysis Diseases 0.000 abstract description 2
- 238000004891 communication Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40169—Flexible bus arrangements
- H04L12/40176—Flexible bus arrangements involving redundancy
- H04L12/40189—Flexible bus arrangements involving redundancy by using a plurality of bus systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or train
- B61L15/0036—Conductor-based, e.g. using CAN-Bus, train-line or optical fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40293—Bus for use in transportation systems the transportation system being a train
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Mechanical Engineering (AREA)
- Small-Scale Networks (AREA)
Abstract
The present invention relates to a kind of network structures based on rail traffic, it includes at least two primary network station system for the transmission of universe network data, is connected with a by a primary network station node in each primary network station system and is used for the two grade network systems that branching networks data are transmitted；It is connected in parallel between primary network station system by a primary network station node, two two grade network systems is at least connected on each primary network station node.Redundancy is high: MVB bus A/B two-way network system is completely separable, has completely redundant MVB transmission line.It can be avoided because single connector failure, loosening or cable fault etc. cause entire transmission network to be paralysed；High reliablity: cable, connector, the equipment room mode of connection are changed to parallel connection, equipment, which any Single Point of Faliure occurs, will not cause the interruption of network system transmission, furthermore, any Branch Road Network segment fault will not influence other branch network segments and main line network segment, reduce influence of the single Branch Road Network segment fault to whole network.
Description
Technical field
The present invention relates to technical field of communication network more particularly to a kind of network structures based on rail traffic.
Background technique
Train network control system plays an important role in terms of the operation of track vehicle safety and repair and maintenance, is train
Central nervous system is that the technology of train safe and reliable operation guarantees.With the continuous renewal of technology, to rail vehicle operation
The requirement of stability, safety and reliability is continuously improved, information communication core of the network control system as rail traffic vehicles
The heart, safety and reliability are particularly important.
And the network architecture of existing rail traffic is the serial topological structure of line-styled, (multifunctional vehicle is total by MVB
Line) the redundancy A/B two-way network system of bus shares the same connector and cable, and all devices are connected by connector, though
So it is simply and at low cost to have the characteristics that route for it, but has the disadvantage that 1, redundancy is low, the redundancy A/B of MVB bus
Two-way network system uses same cable and the same connector, and the Single Point of Faliure on route often leads to two network systems
Timeliness simultaneously；2, reliability is low, due to redundancy deficiency, will lead to train network communication after two-way network system simultaneously timeliness
It interrupts, it has to exit operating service；3, maintenance is difficult, and network occurs after interrupting, and can not navigate to abort situation rapidly, usually
It needs to check whole network route, increases time cost and human cost.
Summary of the invention
For the deficiency in the presence of the prior art, the present invention provides a kind of network structure based on rail traffic, solutions
It has determined defect existing for existing Rail traffic network system.
To achieve the above object, present invention employs the following technical solutions: a kind of network structure based on rail traffic,
It includes at least two primary network station system for the transmission of universe network data, passes through a one in each primary network station system
Grade network node is connected with a two grade network systems for the transmission of branching networks data；Pass through a between primary network station system
Primary network station node is connected in parallel, and two two grade network systems are at least connected on each primary network station node.
B are connected with for time branching networks data transmission by b two grade network node in each two grade network system
Third Class Network System；Two Third Class Network Systems are at least connected on each two grade network node.
The a-1 two grade network system is other than connecting access primary network station system with the a-1 primary network station node, and the
A-1 two grade network system can also be by connecting and connecing with a-th of primary network station node and/or the a-2 primary network station node
Enter primary network station system.
The b-1 Third Class Network System is other than connecting access two grade network system with the b-1 two grade network node, and the
B-1 Third Class Network System can also be by connecting and connecing with b-th of two grade network node and/or the b-2 two grade network node
Enter two grade network system.
It is provided with unique information identifier in primary network station node and two grade network node, for network node failure
Timely positioning.
According to unique information identifier is provided in primary network station node and two grade network node, data pass through level-one net
Network node and two grade network node just will form unique data transfer path.
Primary network station system, two grade network system and Third Class Network System are identical network system；Primary network station node
It include being connect for network data signals retransmission or the repeater forwarded and one end with repeater with two grade network node
The other end accesses the connector that network systems at different levels carry out data transmission for connecting network cable.
Connector is the connector of two data-in ports and a data-out port；Data-out port includes A
+, tetra- wiring pins of A-, B+ and B-, two data access interface include four two cores cable access terminal J1, J2, J3 and
J4；A+ and A- is connect with the access of the cable of the first data-in port terminal J1 and J2；B+ and B- and the second data-in port
Cable access terminal J3 connected with J4.
The cable access terminal J1 of first data-in port includes A1+ pin and A1- pin, and cable accesses terminal J2 packet
Include A2+ pin and A2- pin；The A1+ pin and cable incoming end of A+ pin and cable access the terminal J1 of data-out port
The A2+ pin of sub- J2 connects；The A1- pin and cable of A- pin and cable access the terminal J2 of data-out port access terminal
The A2- pin of J2 connects.
The cable access terminal J3 of second data-in port includes B1+ pin and B1- pin, and cable accesses terminal J4 packet
Include B2+ pin and B2- pin；The B1+ pin and cable incoming end of B+ pin and cable access the terminal J3 of data-out port
The B2+ pin of sub- J4 connects；The B1- pin and cable of B- pin and cable access the terminal J3 of data-out port access terminal
The B2- pin of J4 connects.
Compared with the prior art, the invention has the following beneficial effects:
1, redundancy is high: MVB bus A/B two-way network system is completely separable, has completely redundant MVB transmission line.
It can be avoided because single connector failure, loosening or cable fault etc. cause entire transmission network to be paralysed；
2, high reliablity: cable, connector, the equipment room mode of connection are changed to parallel connection, and it is equal that any Single Point of Faliure occurs in equipment
The interruption that network system will not be caused to transmit, in addition, any Branch Road Network segment fault will not influence other branch network segments and arterial grid
Section reduces influence of the single Branch Road Network segment fault to whole network；
3, be conducive to maintenance: when network transmission interruption occurs for some reason in a certain cable, which can be detected should
Road bus communication failure, while by the fault message by the cable transmission of another redundancy to drivers' cab, service personnel according to
Fault cues positioning failure and can carry out investigation reparation rapidly.
Detailed description of the invention
Fig. 1 is the network structure of system；
Fig. 2 is the network structure of embodiment one；
Fig. 3 is the structure chart of connector.
Specific embodiment
Following further describes the present invention with reference to the drawings.
As shown in Figure 1, a kind of network structure based on rail traffic of the present invention, it includes at least two for total
The primary network station system of volume grid data transmission, is connected with a use by a primary network station node in each primary network station system
In the two grade network system of branching networks data transmission；It is connected in parallel between primary network station system by a primary network station node,
Two two grade network systems are at least connected on each primary network station node.
Preferably, as shown in Fig. 2, primary network station system is the MVB bus A/B two-way trunk network segment of rows of vehicles, second level
Network system is the network segment that every section vehicle is individually composed, and MVB trunk segment A road includes multiple MVB network segments, similarly MVB master
The road dry network segment B also includes multiple MVB network segments；It is realized by primary network station node and the MVB trunk road network segment B on the trunk segment A road MVB
It is connected in parallel；Wherein, the road MVB network segment 1/A and the road network segment 1/B MVB pass through the first primary network station node access MVB trunk segment A
MVB trunk is accessed by the second primary network station node in road and the road MVB trunk network segment B, the road network segment 2/A MVB and the road network segment 2/B MVB
MVB is accessed by third primary network station node in segment A road and the road MVB trunk network segment B, the road network segment 3/A MVB and the road network segment 3/B MVB
Trunk segment A road and the road MVB trunk network segment B；By the way that two two grade network system network segment parallel connections are accessed MVB trunk segment A road
With the road MVB trunk network segment B the logical of data can be carried out by other trunk network segment in parallel in some backbone network segment fault
Letter and transmission.
B are connected with for time branching networks data transmission by b two grade network node in each two grade network system
Third Class Network System；Two Third Class Network Systems are at least connected on each two grade network node.
Preferably, primary network station system is the MVB bus A/B two-way core network of entire rail network, two grade network system
System is the secondary network system that each column train is formed, and three-level system is what every section vehicle of each column train was individually composed
One network segment, two-way MVB bus core network A/B are connected in parallel by the connection equipment in primary network station node；Entirely
Rail network subordinate has multiple row train, and the data in the secondary network of each column train composition will be in train by primary network station node
Data be transferred in primary network station system；The network segment of every section vehicle composition passes through two grade network node for the data of every section vehicle
It is transferred in the secondary network system of each column train composition and then is transferred to the MVB bus A/B two-way trunk of entire rail network
In primary network station system.
The a-1 two grade network system is other than connecting access primary network station system with the a-1 primary network station node, and the
A-1 two grade network system can also be by connecting and connecing with a-th of primary network station node and/or the a-2 primary network station node
Enter primary network station system.
Preferably, a is the positive integer more than or equal to three, certain saves the network segment of vehicle composition except through being directly connected to itself
Primary network station node transfer data to the column train (primary network station system) outside, can also be by adjacent with the section vehicle
The connection of other primary network station nodes, when being directly connected to the section vehicle and network node breaks down, by other one
Grade network node can also transfer data in the column train (primary network station system), prevent from leading to the section vehicle because of equipment fault
The network data of network segment cannot upload in real time.
The b-1 Third Class Network System is other than connecting access two grade network system with the b-1 two grade network node, and the
B-1 Third Class Network System can also be by connecting and connecing with b-th of two grade network node and/or the b-2 two grade network node
Enter two grade network system, wherein b is the positive integer more than or equal to three.
It is provided with unique information identifier in primary network station node and two grade network node, for network node failure
Timely positioning；According to being provided with unique information identifier, each junior's net in primary network station node and two grade network node
Network system superior network system transmission data can all form a specific unique transmission path, undernet system superior
Preferential network node (such as a-1 or b-1 by itself being directly connected to undernet system when network system transmits data
A two or Third Class Network System in addition to connect with a-1 or b-1 one or two grade network node access one or two grade network system)
It is transmitted；The network node being directly connected to failure cause the transmission path that cannot transmit data when, just by with
The adjacent network node superior network system of the undernet system transmits data, and primary network station system is receiving junior's net
The transmission path for the data that the transmission of network system comes up can clearly navigate to which undernet system or network node
It breaks down, and then is overhauled in time.
Primary network station system, two grade network system and Third Class Network System are identical network system；Primary network station node
It include being connect for network data signals retransmission or the repeater forwarded and one end with repeater with two grade network node
The other end accesses the connector that network systems at different levels carry out data transmission for connecting network cable.
As shown in figure 3, connector is the connector of two data-in ports and a data-out port；Data output
Port includes tetra- wiring pins of A+, A-, B+ and B-, and two data access interface include the cable access terminal of four two cores
J1, J2, J3 and J4；A+ and A- is connect with the access of the cable of the first data-in port terminal J1 and J2；The number of B+ and B- and second
It is connected according to the cable access terminal J3 of input port with J4.
The cable access terminal J1 of first data-in port includes A1+ pin and A1- pin, and cable accesses terminal J2 packet
Include A2+ pin and A2- pin；The A1+ pin and cable incoming end of A+ pin and cable access the terminal J1 of data-out port
The A2+ pin of sub- J2 connects；The A1- pin and cable of A- pin and cable access the terminal J2 of data-out port access terminal
The A2- pin of J2 connects.
The cable access terminal J3 of second data-in port includes B1+ pin and B1- pin, and cable accesses terminal J4 packet
Include B2+ pin and B2- pin；The B1+ pin and cable incoming end of B+ pin and cable access the terminal J3 of data-out port
The B2+ pin of sub- J4 connects；The B1- pin and cable of B- pin and cable access the terminal J3 of data-out port access terminal
The B2- pin of J4 connects.
Preferably, the A1+ pin and cable of data-out port A+ pin and cable access terminal J1 access terminal J2's
A capacitor C is in series between A2+ pinA, data-out port B+ pin and the B1+ pin and cable of cable access terminal J3 connect
Enter and is in series with a capacitor C between the B2+ pin of terminal J4B；B terminal resistance R is connected between pin A2- and pin A2+A,
White silk has B terminal resistance R between pin B2- and pin B2+B, B terminal resistance RABetween connect, B terminal resistance RBIt
Between connect, wherein B is positive integer greater than 1.
The cable connecting with connector replaces original single four cores shielded cable using the shielded cable of two two cores,
He remains unchanged interface.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (10)
1. a kind of network structure based on rail traffic, it is characterised in that: it includes at least two for universe network data biography
Defeated primary network station system is connected with a for branching networks number by a primary network station node in each primary network station system
According to the two grade network system of transmission；It is connected in parallel between primary network station system by a primary network station node, each primary network station
Two two grade network systems are at least connected on node.
2. a kind of network structure based on rail traffic according to claim 1, it is characterised in that: each two grade network system
B are connected with for time Third Class Network System of branching networks data transmission by b two grade network node on system；Each second level
Two Third Class Network Systems are at least connected on network node.
3. a kind of network structure based on rail traffic according to claim 1, it is characterised in that: the a-1 second level net
Network system other than connecting access primary network station system with the a-1 primary network station node, may be used also by the a-1 two grade network system
By connecting access primary network station system with a-th of primary network station node and/or the a-2 primary network station node.
4. a kind of network structure based on rail traffic according to claim 2, it is characterised in that: the b-1 three-level net
Network system other than connecting access two grade network system with the b-1 two grade network node, may be used also by the b-1 Third Class Network System
By connecting access two grade network system with b-th of two grade network node and/or the b-2 two grade network node.
5. a kind of network structure based on rail traffic according to claim 2, it is characterised in that: the primary network station
It is provided with unique information identifier in node and two grade network node, for the timely positioning to network node failure.
6. a kind of network structure based on rail traffic according to claim 5, it is characterised in that: according to primary network station section
Unique information identifier is provided in point and two grade network node, data pass through primary network station node and two grade network node just
It will form unique data transfer path.
7. a kind of network structure based on rail traffic according to claim 2, it is characterised in that: the primary network station
System, two grade network system and Third Class Network System are identical network system；The primary network station node and two grade network
Node includes connecting the other end with the repeater for network data signals retransmission or the repeater forwarded and one end
The connector that network systems at different levels carry out data transmission is accessed for connecting network cable.
8. a kind of network structure based on rail traffic according to claim 7, it is characterised in that: the connector is
The connector of two data-in ports and a data-out port；The data-out port includes A+, A-, B+ and B-
Four wiring pins, two data access interface include cable access terminal J1, J2, J3 and J4 of four two cores；The A+
It is connect with A- with the access of the cable of the first data-in port terminal J1 and J2；The B+ and B- and the second data-in port
Cable access terminal J3 connected with J4.
9. a kind of network structure based on rail traffic according to claim 8, it is characterised in that: first data
The cable access terminal J1 of input port includes A1+ pin and A1- pin, and it includes that A2+ pin and A2- draw that cable, which accesses terminal J2,
Foot；The A1+ pin and cable access terminal J2 of the A+ pin of the data-out port and cable access terminal J1
The connection of A2+ pin；The A1- pin and cable of the A- pin of the data-out port and cable access terminal J2 access
The A2- pin of terminal J2 connects.
10. a kind of network structure based on rail traffic according to claim 8, it is characterised in that: second number
It include B1+ pin and B1- pin according to the cable access terminal J3 of input port, it includes B2+ pin and B2- that cable, which accesses terminal J4,
Pin；The B1+ pin and cable of the B+ pin of the data-out port and cable access terminal J3 access terminal J4
B2+ pin connection；The B- pin of the data-out port and the B1- pin and cable of cable access terminal J3 connect
Enter the B2- pin connection of terminal J4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811176790.3A CN109347712A (en) | 2018-10-10 | 2018-10-10 | A kind of network structure based on rail traffic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811176790.3A CN109347712A (en) | 2018-10-10 | 2018-10-10 | A kind of network structure based on rail traffic |
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| CN109347712A true CN109347712A (en) | 2019-02-15 |
Family
ID=65309258
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| CN201811176790.3A Pending CN109347712A (en) | 2018-10-10 | 2018-10-10 | A kind of network structure based on rail traffic |
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| CN110979393A (en) * | 2019-12-14 | 2020-04-10 | 中车大连电力牵引研发中心有限公司 | Programmable logic control system applied to subway train |
| CN112134773A (en) * | 2020-09-17 | 2020-12-25 | 通号城市轨道交通技术有限公司 | MVB bus redundancy communication method and device |
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