CN104618202B - A kind of municipal rail train ring-type communication network - Google Patents
A kind of municipal rail train ring-type communication network Download PDFInfo
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- CN104618202B CN104618202B CN201510002604.4A CN201510002604A CN104618202B CN 104618202 B CN104618202 B CN 104618202B CN 201510002604 A CN201510002604 A CN 201510002604A CN 104618202 B CN104618202 B CN 104618202B
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Abstract
The invention discloses a kind of municipal rail train ring-type communication networks.The network includes two or more ring local-area networks communicated independently of one another.Wherein, each ring local-area network is fetched by communication link by the interchanger that each compartment of municipal rail train is configured and is constituted.It is configured by the port to interchanger, these looped networks is isolated into the local area network communicated independently of one another, be used for transmission different types of data.Municipal rail train communication network provided by the invention can not only achieve the purpose that transmit train operation state data, train diagnostic data, Train Detection and Identification instruction, and safety, real-time and the reliability of in-vehicle network communication are also enhanced, so that the exploitation that the subsequent expansions such as appliance applications remotely update, train information and intelligence, interior multi-medium data transmission are applied becomes possible.
Description
Technical field
The present invention relates to the circular communication nets inside technical field of rail transit communication more particularly to a kind of municipal rail train
Network.
Background technique
Urban track traffic (urban rail) alleviates traffic since the advantages that its freight volume is big, speed is fast has become most cities
The preferred option of pressure.During city rail train, in order to monitor train operation state, the diagnosis of realization train fault, reach
The purpose of to Automatic Control Systems for train operation, interior dependent surveillance and control equipment can generate largely with train operation state, train
Fault diagnosis, Train Detection and Identification instruct relevant data.The generation and consumption of these data are often positioned in different vehicle-mounted set
Among standby, thus need that these data are transferred to its consumption from its production equipment in one communication network of train internal build
Equipment.Train Communication Network (Train Communication Network, TCN) is exactly such a communication network.Its energy
Enough end-to-end data transport service is provided for the terminal device of carry thereon.Based on different communication technology and different topology class
There is biggish differences for safety, real-time, reliability and the related communication performance indicator of the TCN network of type.Thus, it opens
The TCN for issuing the communication technology and relatively reliable topological classification based on higher performance is always technical field of rail transit communication
The important research content of middle networked control system of the train.
Currently, the communication network of municipal rail train, which uses, is based on multifunctional vehicle bus (Multifunction Vehicle
Bus, MVB) communication technology bus-type TCN topology.Although the bus-type TCN based on the MVB communication technology has higher safety
Property and real-time, but due to its own physical characteristic, technical characterstic, topological classification etc. are many-sided, make it difficult to have
Higher reliability and preferable network performance index (such as transmission rate, bandwidth).This makes subsequent development realize such as vehicle
It carries data single-point high speed upload and downloading, instruct the data of train storage maintenance to transmit automatically, in-car entertainment multi-medium data
High-speed transfer, transmission of fault diagnosis data etc. are related to train information and the application function of intelligent aspect receives very big limit
System.
The characteristics of below with reference to Fig. 1 and bus-type TCN topological structure shown in Fig. 2 and the MVB bus communication technology, to current
The disadvantage of bus-type TCN topology based on the MVB communication technology used by municipal rail train is analyzed.
1, in the bus-type TCN topology based on the MVB communication technology, all communication equipments are located at identical communication contention aware
Domain.When in MVB bus certain root or more communication bus there is short circuit or open circuit when, entire all communications of TCN will paralyse.Cause
This, the reliability of the bus-type TCN topology based on the MVB communication technology is not high.
2, in the bus-type TCN topology based on the MVB communication technology, since all communication equipments are located at identical communication punching
Prominent domain, therefore data can be sent into communication network sometime putting entire TCN only one communication equipment.This is certain
The efficiency of data transmission is limited in degree.
3, in the bus-type TCN topology based on the MVB communication technology, the maximum number of user of message transmissions is only according to length
32Byte.This application biggish for inputoutput data amount, one time receiving or sending for related data needs by multiple total
The line period repeatedly sends and receivees and could complete.This reduces the real-time of data to a certain extent.
4, in the bus-type TCN topology based on the MVB communication technology, communication pattern is half-duplex operation, and communication performance is not
It is high.And the bandwidth of MVB is only 1.5Mbit/s, can only be used to transmit train status data, train control command and a small amount of
Train diagnostic data, it is impossible to be used in the great in-car entertainment multi-medium data of transmitted data amount.In this regard, on municipal rail train also at present
Need additionally to lay a set of special multimedia data communication network with transmitting multimedia data.This undoubtedly increases municipal rail train
Manufacturing cost.
5, in the bus-type TCN topology based on the MVB communication technology, since data transmission capabilities are limited, all communications are set
It is standby to update and safeguard by remotely carrying out program, need staff to operate to device context.Not only time-consuming in this way but also
Arduously.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of municipal rail train ring-type communication networks, pass for substituting
The municipal rail train communication network based on the MVB communication technology of system.
The ring-type communication network, comprising:
Two or more ring local-area networks communicated independently of one another；
Wherein, each ring local-area network passes through communication by the interchanger that each compartment of the municipal rail train is configured
It connects and constitutes.
In one embodiment, the first ring local-area network is used for transmission thermoacoustic prime engine data；The second annular office
Domain net is used for transmission the multi-medium data including audio and video.
In one embodiment, the first ring local-area network can also be established with external equipment and be communicated to connect.For
The external equipment and carry transmit the equipment between the terminal device in the first ring local-area network on interchanger
Program updates the related data with maintenance.
In another embodiment, ring local-area network described in third is used for transmission the monitoring data of camera in compartment.
According to an embodiment of the invention, in each ring local-area network, it can be two-way between any two interchanger
Communication.
Further, in each ring local-area network, the interchanger of adjacent compartment is communicatively connected to each other.
Or further, in each ring local-area network, the interchanger and its phase in head section compartment and minor details compartment
The interchanger of adjacent or indirect neighbor compartment switch communication connection, the interchanger in remaining compartment and its indirect adjacent compartment is logical
Letter connection.
Or further, at least one described ring local-area network, the interchanger of adjacent compartment communicates with one another company
It connects；In at least another described ring local-area network, the interchanger in the section compartment head and minor details compartment is adjacent thereto or indirect phase
The switch communication in adjacent compartment connects, and the interchanger in remaining compartment is connect with the switch communication of its indirect adjacent compartment.
In one embodiment, the interchanger of ring local-area network can be worked with full-duplex communication mode.
In one embodiment, the interchanger of ring local-area network can be layer 2 ethernet switch.
Compared with prior art, one or more embodiments of the invention can have following advantage.
1, the present invention uses ring-type communication network, so that will not influence other set when communication failure occurs in certain point in TCN
Standby communication.And between any two interchanger can two-way communication, so if the ether that two inter-exchanges are directly connected to
Network Communication interface or ethernet line break down, and data communication between the two still can be realized by other paths.This has
Improve to effect the reliability of system.
2, the present invention uses ring-type communication network, so that all communication equipments are respectively positioned on different communication contention aware domains in TCN
In, thus all communication equipments can send data in sometime point into communication network.
3, the present invention uses ring-type communication network, and the thermoacoustic prime engine related data packets of TCN is enabled to include up to
The user data of 1432Byte, the 32Byte of the remote super existing TCN based on the MVB bus communication technology are fully able to meet row
Vehicle controls related application to the various demands of data.This enhances the real-time of data to a certain extent.
4, the present invention uses multi-ringed communication network, and each looped network can be configured to work in such as 100Mbit/s
Or 1000Mbit/s full-duplex communication mode.Various types of data can be transmitted according to actual needs in this way: can not only used
To transmit train status data, train control command and a small amount of train diagnostic data, moreover it can be used to which transmitted data amount is very big
In-car entertainment multi-medium data.Compared with the prior art, it no longer needs to additionally lay a set of special multimedia data communication net
Network reduces the manufacturing cost of municipal rail train.And further, multi-ringed communication network works independently of one another, has reached pair
Different data is completely independent transmission, non-interfering purpose.
5, the ring-type communication network that the present invention uses transmits its program in the equipment on the TCN for carry and updates and maintenance
Related data.Staff conveniently and efficiently realizes that the program of equipment updates without operating to the scene of all devices
With maintenance.
6, the embodiment of the present invention can be by adjacent thereto or indirect by the interchanger in first section compartment and minor details compartment
The switch communication of adjacent compartment connects, the side that the interchanger in remaining compartment is connect with the switch communication of its indirect adjacent compartment
Formula sets up ring local-area network, improves the efficiency of transmission of data on TCN, and data is made to reach the time phase of consumer device from production equipment
To equilibrium.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example and is used together to explain the present invention, be not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the setting schematic diagram of communication network in existing municipal rail train；
Fig. 2 is the schematic diagram of the existing municipal rail train communication network connection based on the MVB communication technology；
Fig. 3 is the schematic diagram of according to embodiments of the present invention one municipal rail train ring-type communication network connection；
Fig. 4 be according to embodiments of the present invention one municipal rail train ring-type communication network in traction instruction transmission process signal
Figure；
Fig. 5 be according to embodiments of the present invention one municipal rail train ring-type communication network in monitoring data transmission process signal
Figure.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with drawings and examples to the present invention
It is described in further detail.It should be pointed out that be set forth below is two of multi-ringed network topology on municipal rail train
Example is embodied, but the present invention should not will not be limited to these embodiments.
First embodiment
In the present embodiment, the annular that municipal rail train ring-type communication network provided by the invention is worked independently of one another by two
Local area network composition.It (is referred to as exchanged in the present invention for this purpose, each compartment of municipal rail train configures at least one communication exchange equipment
Machine).It can use such as ethernet communication cable (M12 line) and physical connection carried out to the interchanger in each compartment, and to interchanger
Port configured, the two looped networks are isolated into two mutual independent communication local area networks.Since municipal rail train is using single
Operation way is organized into groups, therefore need to only arrange a set of single marshalling communication network in the car.Moreover, because the communication in marshalling is generally adopted
Preferably using layer 2 ethernet switch with the interchanger of multicast, therefore each compartment configuration, (also referred to as Ethernet is compiled
Networking node, Ether Consist Network Node-ECNN).In addition, according to the status that technology develops, all communications are set
Standby physical layer and data link layer will meet the relevant regulations of IEEE802.3.
Fig. 3 shows the communication connection mode of the interchanger in each compartment inside a municipal rail train in the present embodiment.From figure
In as can be seen that in the present embodiment, municipal rail train shares six section compartments.Wherein, first section compartment Tc1 and minor details compartment Tc2 is
Trailer body with drivers' cab is successively motor train compartment Mp1 of the section with pantograph, two sections among them without the dynamic of pantograph
The motor train compartment Mp2 of vehicle compartment M1 and M2 and a section with pantograph.In order to improve the efficiency of transmission of data, make data from life
The time relative equilibrium that equipment reaches consumer device is produced, the present embodiment connects in the following way when constructing ring local-area network
The switch device in each compartment.
The interchanger ECNN3's of the motor train compartment M1 of the port 11 and indirect neighbor of the interchanger ECNN1 of head section compartment Tc1
Port 31 communicates to connect.The interchanger of the motor train compartment Mp2 of the port 32 and indirect neighbor of the interchanger ECNN3 of motor train compartment M1
The port 51 of ECNN5 communicates to connect.The friendship of the port 52 of the interchanger ECNN5 of motor train compartment Mp2 and adjacent minor details compartment Tc2
Change planes ECNN6 port 61 communicate to connect.The port 62 of the interchanger ECNN6 of minor details compartment Tc2 and the motor-car vehicle of indirect neighbor
The port 41 of the interchanger ECNN4 of compartment M2 communicates to connect.The port 42 of the interchanger ECNN4 of motor train compartment M2 and indirect neighbor
The port 21 of the interchanger ECNN2 of motor train compartment Mp1 communicates to connect.The port 22 of the interchanger ECNN2 of motor train compartment Mp1 and head
The port 12 for saving the interchanger ECNN1 of compartment Tc1 communicates to connect.Complete first annular local area network is thus constructed (in Fig. 3
It is shown in solid).
The end of the interchanger ECNN2 of the port 13 and adjacent motor train compartment Mp1 of the interchanger ECNN1 of head section compartment Tc1
Mouth 23 communicates to connect.The interchanger of the motor train compartment M2 of the port 24 and indirect neighbor of the interchanger ECNN2 of motor train compartment Mp1
The port 43 of ECNN4 communicates to connect.The port 44 of the interchanger ECNN4 of motor train compartment M2 and the minor details compartment Tc2 of indirect neighbor
Interchanger ECNN6 port 63 communicate to connect.The port 64 of the interchanger ECNN6 of minor details compartment Tc2 and adjacent motor-car vehicle
The port 53 of the interchanger ECNN5 of compartment Mp2 communicates to connect.The port 54 of the interchanger ECNN5 of motor train compartment Mp2 and indirect neighbor
Motor train compartment M1 interchanger ECNN3 port 33 communicate to connect.The port 34 of the interchanger ECNN3 of motor train compartment M1 and head
The port 14 for saving the interchanger ECNN1 of compartment Tc1 communicates to connect.Complete second ring local-area network is thus constructed (in Fig. 3
Shown in dotted line).
In the present embodiment, it is configured by the port attribute to above-mentioned interchanger and the two looped networks is arranged to two
The local area network of mutual independent communication.Wherein, first annular local area network is used for transmission the related data of thermoacoustic prime engine, the second annular office
Domain net is used for transmission the multi-medium data including audio and video.To realize driving control by the independence on transmission medium
The purpose that data processed and multi-medium data individual transmission are independent of each other.
In the present embodiment, trailer body Tc1 and Tc2 with drivers' cab are configured central controller, traction controller,
The equipment such as brake monitor and door control unit and conditioning control unit pass through respective interchanger ENCC1 and ENNC6 access the
One ring local-area network.The traction unit and door control unit that motor train compartment Mp1 and Mp2 with pantograph are configured pass through respective friendship
The ENCC2 and ENNC5 that changes planes accesses first annular local area network.The traction unit configured without the motor train compartment M1 and M2 of pantograph
First annular local area network is accessed by respective interchanger ENCC3 and ENNC4 with door control unit.Trailer body with drivers' cab
Tc1 and Tc2, motor train compartment Mp1 and Mp2 with pantograph, without pantograph each self-configuring of motor train compartment M1 and M2 monitoring
Unit accesses the second ring local-area network by respective interchanger.
Transmission process, multi-medium data below with reference to Fig. 4 and Fig. 5 to the thermoacoustic prime engine data of the present embodiment municipal rail train
Transmission process and teleprogram update be illustrated with maintenance process.
1, by taking the transmission of traction/braking instruction as an example.
When the driver in trailer body Tc1 is pushed forward according to the actual situation or post-tensioning train speed controls handle, it is mounted on
Traction controller or brake monitor on ECNN1 are according to the quantity and respective correlation of traction unit in train or brake unit
Parameter calculates corresponding traction or braking instruction, is then encapsulated into being sent to the process data of a certain fixed multicast address
Packet.Then, packaged data packet broadcast is belonged to first annular local into network by the traction controller or brake monitor
All ports ECNN of net (also referred to as thermoacoustic prime engine looped network).Traction unit or braking in each motor train compartment Mp1, Mp2, M1, M2
The data packet is received on the port for the interchanger that unit is mounted from it, by resolve packet at corresponding traction or brake finger
It enables and executes.Traction/braking instruction transmission process timing is as shown in Figure 4.
2, for gating the transmission of instruction.
After the driver in train arrival and trailer body Tc1 presses enabling or the door close button of control coach, hang
The door control unit being connected on ECNN1 instructs accordingly by generating and is encapsulated into being sent to the data of a certain fixed multicast address
Packet.Then, which belongs to first annular local area network (also referred to as thermoacoustic prime engine into network for packaged data packet broadcast
Looped network) all ports ECNN.All door control units being articulated in thermoacoustic prime engine looped network receive the data packet, by data packet
Corresponding gate is parsed into instruct and execute.Gate the transmission process and the process phase of traction/braking instruction shown in Fig. 4 of instruction
Seemingly.
3, by taking the transmission of monitoring data as an example.
Intelligence on driver Consoles of the function for monitoring of municipal rail train by being installed on two trailer bodies Tc1 and Tc2 is shown
Show device, and be distributed in trailer body Tc1 and Tc2, the monitoring unit in each motor train compartment Mp1, Mp2, M1, M2 is completed jointly.
What it is due to transmission is larger and unrelated with the thermoacoustic prime engine multi-medium data of data volume, by the second ring local-area network (
Claim multi-medium data transmission looped network) carry out data transmission.Specifically, camera in each compartment is by collected video image
Monitoring unit is passed to, monitoring unit is encapsulated into multi-medium data packet and is broadcast on the second ring local-area network, is mounted on
Monitoring unit in two trailer bodies Tc1 and Tc2 on ECNN will come on data receiver and pass to the intelligence on driver Consoles
Energy display is shown.The timing of monitoring data transmission process is as shown in Figure 5.
4, equipment teleprogram is updated and is safeguarded
For updating and safeguard primarily directed to the equipment being mounted on thermoacoustic prime engine looped network due to teleprogram,
In the present embodiment, by first annular local area network come the related data of transfer program update and maintenance.Specific update operation can
To be realized using the external equipment for aiming at teleprogram update and exploitation.
Firstly, first annular local area network and external equipment are established and are communicated to connect.Then it is obtained by Topology Discovery tool all
Such as vehicle network topological information, locking equipment title, IP address of equipment information.Then it is arranged according to these information to specify need
Carry out the equipment and program file of program update.It is sent finally by being packaged program file and passing through first annular local area network
To specified equipment.The program file received is stored to corresponding position and then completes program update by the designated equipment.
Second embodiment
In the present embodiment, the annular that municipal rail train ring-type communication network provided by the invention is worked independently of one another by three
Local area network composition.It is similar with embodiment one, in the present embodiment, by the port attribute of the interchanger that each compartment is configured into
Three looped networks, are arranged to the local area network of mutual independent communication by row setting.Wherein: first annular local area network is used for transmission driving control
The related data of system；Second ring local-area network is used for transmission the multi-medium data including audio and video；Third ring local-area network
Dedicated for the monitoring data of camera in transmission compartment.Certain third ring local-area network can be used for others and for example instruct
The data of train storage maintenance are transmitted automatically, namely meet subsequent Function Extension demand.
Furthermore, it is possible to construct ring local-area network using traditional connection type.That is, each ring local-area network uses adjacent two
The mode that the interchanger in compartment is communicatively connected to each other constructs.
It is, of course, also possible to according to actual requirement and/or transmission data the characteristics of, using adjacent two compartment interchanger each other
The mode of communication connection constructs the lesser ring local-area network of transmitted data amount, such as the of transmission thermoacoustic prime engine data is responsible in building
One ring local-area network.And biggish for transmitted data amount second and third ring local-area network by the way of such as embodiment one
The interchanger in each compartment is connected to construct.In short, no matter which kind of connection type, in each ring local-area network, any two hand over
Two-way communication is able to carry out between changing planes.As long as the group of switches in each compartment of municipal rail train has built up two such or two or more
The ring local-area network of autonomous working, achieves the object of the present invention, then should not just exclude except protection scope of the present invention.
Transmission train operation state data, train can not only be reached with municipal rail train communication network provided by the invention
Diagnostic data, the purpose of Train Detection and Identification instruction, and also enhance the safety of in-vehicle network communication, real-time and reliable
Property.And further, the present invention combines existing ethernet communication technology in specific application, greatly improves municipal rail train
The transmission rate and bandwidth of communication network, so that such as appliance applications remotely update, train information and intelligence, car
The exploitation of the subsequent expansions application such as multi-medium data transmission becomes possible.
The above, specific implementation case only of the invention, scope of protection of the present invention is not limited thereto, any ripe
Those skilled in the art are known in technical specification of the present invention, modifications of the present invention or replacement all should be in the present invention
Protection scope within.
Claims (8)
1. a kind of municipal rail train ring-type communication network characterized by comprising
Two or more ring local-area networks communicated independently of one another；
Wherein, each ring local-area network passes through communication connection by the interchanger that each compartment of the municipal rail train is configured
And it constitutes；Each compartment configures an interchanger, by configuring the port of interchanger for two or more annular locals
Net is isolated into the ring local-area network communicated independently of one another；
In at least one described ring local-area network, the interchanger of adjacent compartment is communicatively connected to each other；Described at least another
In ring local-area network, the section compartment head and minor details compartment interchanger is adjacent thereto or the switch communication in indirect neighbor compartment connects
It connects, the interchanger in remaining compartment is connect with the switch communication of its indirect adjacent compartment；
First annular local area network is used for transmission thermoacoustic prime engine data；
Second ring local-area network is used for transmission the multi-medium data including audio and video.
2. communication network according to claim 1, it is characterised in that:
First annular local area network can also be established with external equipment and be communicated to connect, and be used in the external equipment and carry first
The program that the terminal device is transmitted between terminal device in ring local-area network on interchanger updates and the related data of maintenance.
3. communication network according to claim 1 or 2, which is characterized in that further include:
Third ring local-area network is used for transmission the monitoring data of camera in compartment.
4. communication network according to claim 1 characterized by comprising
It, being capable of two-way communication between any two interchanger in each ring local-area network.
5. communication network according to claim 4, it is characterised in that:
In each ring local-area network, the interchanger of adjacent compartment is communicatively connected to each other.
6. communication network according to claim 4, it is characterised in that:
In each ring local-area network, the section compartment head and minor details compartment interchanger is adjacent thereto or indirect neighbor compartment
Switch communication connection, the interchanger in remaining compartment connect with the switch communication of its indirect adjacent compartment.
7. communication network according to claim 1, it is characterised in that:
The interchanger of the ring local-area network is with the work of full-duplex communication mode.
8. communication network according to claim 1, it is characterised in that:
The interchanger of the ring local-area network is layer 2 ethernet switch.
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| CN105703993B (en) * | 2016-04-08 | 2018-10-26 | 同济大学 | A kind of electric vehicle distributed ring architectures of communication networks based on vehicle-mounted Ethernet |
| CN111071297B (en) * | 2018-10-19 | 2022-04-19 | 中车唐山机车车辆有限公司 | Train network control system and train |
| CN112298222B (en) * | 2019-07-30 | 2022-12-09 | 株洲中车时代电气股份有限公司 | Rail vehicle and communication network thereof |
| CN112087351B (en) * | 2020-09-24 | 2022-02-11 | 山东交通学院 | Remote train network communication interface testing method |
| CN112793624A (en) * | 2020-12-29 | 2021-05-14 | 交控科技股份有限公司 | Train control and monitoring system based on TSN |
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| CN102404177A (en) * | 2011-11-28 | 2012-04-04 | 浙江网新技术有限公司 | Method for networking train ring network |
| CN102801597A (en) * | 2012-08-30 | 2012-11-28 | 北京交通大学 | Ethernet-based train communication network implementation method |
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| CN103997545B (en) * | 2014-06-13 | 2017-12-19 | 中车青岛四方车辆研究所有限公司 | Suitable for the train broadband communication network framework of rail vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102404177A (en) * | 2011-11-28 | 2012-04-04 | 浙江网新技术有限公司 | Method for networking train ring network |
| CN102801597A (en) * | 2012-08-30 | 2012-11-28 | 北京交通大学 | Ethernet-based train communication network implementation method |
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