CN113438291A - Rail transit vehicle and vehicle-ground communication topological structure thereof - Google Patents

Rail transit vehicle and vehicle-ground communication topological structure thereof Download PDF

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Publication number
CN113438291A
CN113438291A CN202110691397.3A CN202110691397A CN113438291A CN 113438291 A CN113438291 A CN 113438291A CN 202110691397 A CN202110691397 A CN 202110691397A CN 113438291 A CN113438291 A CN 113438291A
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CN
China
Prior art keywords
vehicle
ground
network
switch
rail transit
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Pending
Application number
CN202110691397.3A
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Chinese (zh)
Inventor
马丽英
陈平安
杨贵森
周汛
汤诚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Zhuzhou Locomotive Co Ltd
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CRRC Zhuzhou Locomotive Co Ltd
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Publication date
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Priority to CN202110691397.3A priority Critical patent/CN113438291A/en
Publication of CN113438291A publication Critical patent/CN113438291A/en
Pending legal-status Critical Current

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    • 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
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/18—Loop-free operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0209—Architectural arrangements, e.g. perimeter networks or demilitarized zones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computing Systems (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Small-Scale Networks (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a rail transit vehicle and a vehicle-ground communication topological structure thereof, comprising: the first exchanger is arranged in the cab; and the at least one vehicle-mounted system host is arranged in the carriage, is connected with the first switch and is communicated with the vehicle-mounted Ethernet. The invention avoids the problem of loop formation between the train-ground network and the vehicle-mounted Ethernet network, and avoids the occurrence of network storm or network paralysis in the vehicle-mounted network, thereby ensuring the running safety of the train.

Description

Rail transit vehicle and vehicle-ground communication topological structure thereof
Technical Field
The invention relates to the technical field of rail transit, in particular to a rail transit vehicle and a vehicle-ground communication topological structure thereof.
Background
At present, two types of video communication services of vehicles and the ground in the rail transit industry are mainly provided, wherein the video communication services are uploaded to the vehicles through ground live streaming, and vehicle-mounted monitoring videos are downloaded to the ground. Because the ground and the vehicle belong to different Ethernet networks respectively, and how to communicate between the two Ethernet networks, the scheme of each city is different at present. If the connection topology is defective, the network storm of the vehicle Ethernet is easily caused, the vehicle Ethernet is paralyzed, and great risk is caused to the train operation safety.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a rail transit vehicle and a vehicle-ground communication topological structure thereof aiming at the defects of the prior art, so as to avoid network storms or network paralysis of a vehicle-mounted network.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a rail transit vehicle ground-to-vehicle communication topology comprising:
the first exchanger is arranged in the cab;
and the at least one vehicle-mounted system host is arranged in the carriage, is connected with the first switch and is communicated with the vehicle-mounted Ethernet.
The first switch is not connected to the vehicle Ethernet network, and the first switch is communicated with the vehicle-mounted Ethernet network through the vehicle-mounted system host, so that the vehicle-ground network and the vehicle-mounted Ethernet network are prevented from forming a ring, and the vehicle-mounted network is prevented from generating network storm or network paralysis.
The number of the vehicle-mounted system host computers is two, and each vehicle-mounted system host computer is connected with a first switch in a cab. Two network ports of each vehicle-mounted system host respectively correspond to two independent network cards, and physical channels are isolated, so that the physical isolation between the vehicle-ground network and the vehicle-mounted network is ensured.
The first switch is connected with a vehicle-mounted communication module in a cab, so that a vehicle-ground wireless channel is provided, and vehicle-ground communication is facilitated.
The first switches in the two driver's cabins communicate with each other.
The first switch is communicated with a ground monitoring call server and a ground live broadcast server which are arranged in a cab. The first switch has an address translation function and is used for realizing the isolation of the ground network and the vehicle-mounted network.
In order to save installation space, the ground monitoring calling server and the ground live broadcast server are integrated into a whole.
The first switch is an n-layer switch, and n is more than or equal to 3.
The vehicle-mounted Ethernet comprises a plurality of second switches, wherein each second switch is arranged in each compartment, and the two switches in the adjacent compartments are connected with each other.
The second exchanger is an m-layer exchanger, and m is more than or equal to 2. The method is used for data exchange of the in-vehicle network equipment.
The invention also provides a rail transit vehicle which adopts the vehicle-ground communication topological structure.
Compared with the prior art, the invention has the beneficial effects that: the invention avoids the problem of loop formation between the train-ground network and the vehicle-mounted Ethernet network, and avoids the occurrence of network storm or network paralysis in the vehicle-mounted network, thereby ensuring the running safety of the train.
Drawings
FIG. 1 is a topology structure diagram of an embodiment of the present invention;
fig. 2 is a diagram of a vehicular ethernet network structure according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, in the embodiment of the present invention, one end of a ground live broadcast server is connected to a ground live broadcast system through a vehicle-ground wireless network, and the other end is connected to a vehicle-mounted system host through a three-layer switch, and the vehicle-mounted system host receives data and transmits the data to a vehicle-mounted terminal through a vehicle-mounted ethernet network; one end of the ground monitoring calling server is connected with the ground monitoring system through a vehicle-ground wireless network, the other end of the ground monitoring calling server is connected with the vehicle-mounted system host through the three-layer switch, and the vehicle-mounted system host calls corresponding terminal video data to upload through the vehicle-mounted Ethernet after receiving the data request. All connections in fig. 1 use ethernet.
Each driver cab of the train is provided with a train-ground network, and the train-ground network comprises the following equipment: the system comprises a ground live broadcast server, a ground monitoring call server (1 and 2 can be integrated into one server), a three-layer switch, a vehicle-ground wireless channel (WIFI or LTE), and a vehicle-mounted AP (access point) is configured by taking the WIFI as an example. Two network ports (a network port 1 and a network port 2) of the vehicle-mounted system host correspond to two independent network cards respectively, and physical channels are isolated, so that the physical isolation of a vehicle-ground network and a vehicle-mounted network is ensured. Data interaction between the train and the ground is carried out through the three-layer switch, but the three-layer switch is not connected to the train Ethernet network, and the three-layer switch is communicated with the train Ethernet network through the train-mounted system host.
As shown in fig. 1, in the embodiment of the present invention, two on-board system hosts are respectively disposed in the compartments near two cabs, but of course, the on-board system hosts may also be disposed in the remaining compartments.
Fig. 2 is a schematic structural diagram of a vehicle-mounted ethernet network, in which each car is provided with a switch, and the switches of two adjacent cars communicate with each other. Each switch is connected with the LCD and the cameras in the compartment where the switch is located.
As shown in fig. 1 and fig. 2, the signal transmission direction of the live video stream is: the system comprises a vehicle-ground channel, a three-layer switch, a ground live broadcast server, a vehicle-mounted system host, a vehicle-mounted Ethernet network and each carriage LCD.
The transmission direction of the signal of the monitoring call video stream is as follows: each carriage camera, a vehicle-mounted Ethernet network, a vehicle-mounted system host, a three-layer switch, a ground monitoring call server and a vehicle-ground channel.
The two three-layer switches can be connected or not connected, and the three-layer switches are not connected to the vehicle Ethernet network, so that the problem of loop formation between the vehicle-ground network and the vehicle-mounted Ethernet network is avoided, and network storms or network paralysis of the vehicle-mounted network is avoided.
When the system is used, the vehicle-mounted Ethernet network is connected with the vehicle-mounted system host through the gigabit Ethernet interface, the vehicle-mounted system host is connected with the three-layer switch through the gigabit Ethernet, the three-layer switch is connected with the ground monitoring calling server through the gigabit Ethernet, the three-layer switch is connected with the ground live broadcast server through the gigabit Ethernet, and the three-layer switch has a nat function. The ground monitoring calling server is connected with the ground monitoring system through a vehicle-ground wireless network, and the ground live broadcast server is connected with the ground live broadcast system through the vehicle-ground wireless network.
The ground live broadcast server and the ground monitoring calling server can be integrated or independently configured.

Claims (10)

1. A rail transit vehicle ground-to-vehicle communication topology, comprising:
the first exchanger is arranged in the cab;
and the at least one vehicle-mounted system host is arranged in the carriage, is connected with the first switch and is communicated with the vehicle-mounted Ethernet.
2. The vehicle-ground communication topology structure of the rail transit vehicle as claimed in claim 1, wherein the number of the vehicle-mounted system hosts is two, and each vehicle-mounted system host is connected with the first switch in one cab.
3. The rail transit vehicle-ground communication topology structure of claim 1, wherein the first switch is connected with a vehicle-mounted communication module in a cab.
4. The rail transit vehicle-ground communication topology of claim 1, wherein the first switches in two operator cabs are in communication with each other.
5. The track transportation vehicle ground communication topology structure of claim 1, wherein the first switch is in communication with a ground monitoring call server and a ground live broadcast server which are arranged in a cab.
6. The rail transit vehicle-ground communication topology structure of claim 1, wherein the ground monitoring call server and the ground live broadcast server are integrated into a whole.
7. The vehicle-ground communication topology structure of the rail transit vehicle as claimed in claim 1, wherein the first switch is an n-layer switch, and n is greater than or equal to 3.
8. The vehicle-ground communication topology structure of the rail transit vehicle as claimed in any one of claims 1 to 7, wherein the vehicle-mounted Ethernet network comprises a plurality of second switches, each second switch is respectively disposed in each compartment, and two switches in adjacent compartments are connected with each other.
9. The rail transit vehicle-ground communication topology structure of claim 8, wherein the second switch is an m-layer switch, and m is greater than or equal to 2.
10. A rail transit vehicle employing the vehicle-to-ground communication topology of any one of claims 1-9.
CN202110691397.3A 2021-06-22 2021-06-22 Rail transit vehicle and vehicle-ground communication topological structure thereof Pending CN113438291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110691397.3A CN113438291A (en) 2021-06-22 2021-06-22 Rail transit vehicle and vehicle-ground communication topological structure thereof

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Application Number Priority Date Filing Date Title
CN202110691397.3A CN113438291A (en) 2021-06-22 2021-06-22 Rail transit vehicle and vehicle-ground communication topological structure thereof

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CN113438291A true CN113438291A (en) 2021-09-24

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000544A1 (en) * 2007-06-27 2008-12-31 Bombardier Transportation Gmbh Communication system for transferring communication information within a railway train
CN105682107A (en) * 2015-06-29 2016-06-15 南方银谷科技有限公司 Train compartment WIFI (Wireless Fidelity) coverage network
CN106059725A (en) * 2016-07-21 2016-10-26 中铁二院重庆勘察设计研究院有限责任公司 Vehicle-mounted dual hot standby system for rail tram
CN205945768U (en) * 2016-07-21 2017-02-08 中铁二院重庆勘察设计研究院有限责任公司 On -vehicle two -node cluster hot backup system of guide rail trolley -bus
CN107878504A (en) * 2017-03-31 2018-04-06 比亚迪股份有限公司 Train-installed control system and train
CN107911847A (en) * 2017-11-01 2018-04-13 北京市轨道交通建设管理有限公司 Parallel WLAN and LTE system and application method in train-ground communication
CN109334712A (en) * 2018-11-09 2019-02-15 中车株洲电力机车有限公司 A kind of control method of passenger information system and passenger information system
CN210793218U (en) * 2019-10-12 2020-06-19 广州运达智能科技有限公司 Novel subway train data integration acquisition system
CN112153577A (en) * 2020-08-13 2020-12-29 南京轨道交通***工程有限公司 Subway train car-ground broadcasting communication equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000544A1 (en) * 2007-06-27 2008-12-31 Bombardier Transportation Gmbh Communication system for transferring communication information within a railway train
CN105682107A (en) * 2015-06-29 2016-06-15 南方银谷科技有限公司 Train compartment WIFI (Wireless Fidelity) coverage network
CN106059725A (en) * 2016-07-21 2016-10-26 中铁二院重庆勘察设计研究院有限责任公司 Vehicle-mounted dual hot standby system for rail tram
CN205945768U (en) * 2016-07-21 2017-02-08 中铁二院重庆勘察设计研究院有限责任公司 On -vehicle two -node cluster hot backup system of guide rail trolley -bus
CN107878504A (en) * 2017-03-31 2018-04-06 比亚迪股份有限公司 Train-installed control system and train
CN107911847A (en) * 2017-11-01 2018-04-13 北京市轨道交通建设管理有限公司 Parallel WLAN and LTE system and application method in train-ground communication
CN109334712A (en) * 2018-11-09 2019-02-15 中车株洲电力机车有限公司 A kind of control method of passenger information system and passenger information system
CN210793218U (en) * 2019-10-12 2020-06-19 广州运达智能科技有限公司 Novel subway train data integration acquisition system
CN112153577A (en) * 2020-08-13 2020-12-29 南京轨道交通***工程有限公司 Subway train car-ground broadcasting communication equipment

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Application publication date: 20210924