CN117022404A - CBTC train control system based on 5G and time sensitive Ethernet as cores - Google Patents
CBTC train control system based on 5G and time sensitive Ethernet as cores Download PDFInfo
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- CN117022404A CN117022404A CN202311096963.1A CN202311096963A CN117022404A CN 117022404 A CN117022404 A CN 117022404A CN 202311096963 A CN202311096963 A CN 202311096963A CN 117022404 A CN117022404 A CN 117022404A
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- vehicle
- processing server
- safety
- trackside
- processor
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- PLAIAIKZKCZEQF-UHFFFAOYSA-N methyl 6-chloro-2-oxo-3h-1,2$l^{4},3-benzodithiazole-4-carboxylate Chemical compound COC(=O)C1=CC(Cl)=CC2=C1NS(=O)S2 PLAIAIKZKCZEQF-UHFFFAOYSA-N 0.000 title claims abstract 12
- 238000012545 processing Methods 0.000 claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 37
- 238000005516 engineering process Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
- B61L2027/204—Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation using Communication-based Train Control [CBTC]
Abstract
The invention relates to a CBTC train control system based on 5G and time sensitive Ethernet as cores, which comprises: the central safety processing server is used for sending control commands to the trackside positioning module, the vehicle-mounted edge safety processor and the trackside edge safety processor; the track side positioning module is used for receiving a command sent by the central security processing server through a wired TSN network and returning positioning information of the vehicle; the vehicle-mounted edge safety processor is used for receiving a real-time speed control command sent by the central safety processing server through a 5G TSN network, controlling a train through a vehicle interface and returning the vehicle speed and the vehicle state; the track side edge safety processor is used for receiving a monitoring control command sent by the central safety processing server through a 5G TSN network or a wired TSN network, controlling a track side monitoring object and returning to the status of the track side monitoring object; the invention reduces the number of network cables and devices, and is more beneficial to simplifying the system architecture.
Description
Technical Field
The invention relates to a CBTC train control system based on a 5G and time-sensitive Ethernet as cores.
Background
The existing CBTC (communication-based train automatic control system) takes a universal Ethernet, a WLAN (wireless local area network) and an LTE (long term evolution) technology as a core construction system, and mainly relies on a safety communication protocol to realize functional safety calculation, so that the real-time performance is not strong, a functional interface with high data real-time performance requirement needs to be solved in a local controller, for example, synchronous data between two hot standby redundant controllers needs to be directly connected by adopting a network or an industrial bus is adopted to ensure controllable time delay; the data collected in the field must be processed locally and responded to by security control, and the security function is inseparable. The improvement of the system in the aspects of further simplification, performance, maintainability and the like is limited, more secure computation is realized in the cloud platform, the function of the existing CBTC system is necessarily required to be redistributed, a part of original locally processed functions are transferred to the central cloud platform, cloud edge data exchange is performed through a network, and the real-time performance and the security of the network are required to meet the requirements of a new system architecture.
The time-sensitive network is gradually developed on the train network, is applied to real-time communication among train vehicle-mounted equipment, belongs to vehicle-mounted local application in a CBTC system, is not combined with a 5G wireless technology, does not influence the overall architecture of the CBTC system, and cannot fully exert the advantages of the time-sensitive network.
Thus, a CBTC train control system based on 5G and time sensitive ethernet is provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a CBTC train control system based on a 5G and time-sensitive Ethernet as a core, which reduces the number of network cables and devices and is more beneficial to simplifying the system architecture.
The technical scheme for achieving the purpose is as follows:
a CBTC train control system based on 5G and time sensitive ethernet as a core, comprising:
the central safety processing server is used for sending control commands to the trackside positioning module, the vehicle-mounted edge safety processor and the trackside edge safety processor;
the track side positioning module is used for receiving a command sent by the central security processing server through a wired TSN (time sensitive Ethernet) network and returning positioning information of the vehicle;
the vehicle-mounted edge safety processor is used for receiving a real-time speed control command sent by the central safety processing server through a 5G TSN network, controlling a train through a vehicle interface and returning the vehicle speed and the vehicle state;
and the track side edge safety processor is used for receiving a monitoring control command sent by the central safety processing server through a 5G TSN network or a wired TSN network, controlling the track side monitoring object and returning the status of the track side monitoring object.
Preferably, the central security processing server and the trackside positioning module, the vehicle-mounted edge security processor and the trackside edge security processor are synchronized with a master clock by adopting an I EEE802.1AS protocol, and an information time stamp is added in a communication message between the central security processing server and the trackside positioning module, between the vehicle-mounted edge security processor and the trackside edge security processor, and is a clock during information collection.
Preferably, the central security processing server interfaces with an external system using a wired TSN network.
Preferably, the trackside positioning module adopts a trackside active positioning speed measurement technology.
Preferably, the vehicle-mounted edge safety processor is connected with the vehicle-mounted sensor and the vehicle interface, and pre-stores vehicle-related configuration data, wherein the vehicle-related configuration data comprises vehicle interface points, a vehicle interface protocol, a vehicle length grouping, vehicle traction braking parameters, a vehicle ID and vehicle-mounted sensor data.
Preferably, the rail side edge safety processor interfaces with the roadside monitoring object, which includes a switch, a signal, and an operation button.
Preferably, the platform screen door may interface with the rail alongside security processor or with the central security processing server via a wired TSN network.
Preferably, the track side edge safety processor is integrally installed with the track side monitoring object by adopting a miniaturization technology, the track side edge safety processing power supply is shared with the track side monitoring object, the station power supply screen utilizes a power supply line to carry out power carrier communication on the station power carrier communication adapter, the power carrier communication is used as a backup of a 5G TSN network, and when the 5G TSN network communication is interrupted, the track side monitoring object control capability is provided.
Preferably, the station power supply screen performs power carrier communication by using a power line to the station power carrier communication adapter, the power carrier communication is used as a backup of a wired TSN network, and when the communication of the wired TSN network is interrupted, the communication capability is provided for the central security processing server.
Preferably, the data fed back by the trackside positioning module, the vehicle-mounted edge safety processor and the trackside edge safety processor to the central safety processing server are classified according to the data safety level, and are divided into safety key information and non-safety key information, the safety key information is added into a highest priority transmission queue by a TSN wired network according to an I EEE802.1Qbv protocol, and is transmitted in a fixed time slot, and the non-safety key information is transmitted in a Best effort mode.
The beneficial effects of the invention are as follows:
1) The communication delay among the devices can be calculated by adopting a wired TSN network technology, and the time delay is short, the reliability is high and the period jitter is small by utilizing a 5G TSN network technology;
2) By adopting the I EEE802.1AS global clock synchronization technology, all data are marked in time when generated, and when faults occur, data alignment across professions can be performed, so that the accurate positioning of the faults is realized;
3) The trackside positioning module adopts a trackside active positioning speed measurement technology, and the position and speed of the train are actively detected by the trackside positioning module; the vehicle-mounted equipment and the sensors are simplified, a line map is not needed in the vehicle, the vehicle-ground communication data volume is reduced, and the 5G TSN network advantage is brought into play;
4) The light vehicle-mounted edge safety processor and the rail side edge safety processor are beneficial to realizing interconnection and intercommunication operation of the train, and because the vehicle-mounted edge safety processor and the rail side edge safety processor only need to provide vehicle related parameters for the central safety processing server and receive control instructions of the central safety processing server, the interface data protocol is very simple;
5) The roadside edge safety processor is integrally installed with the roadside monitoring object and is used as a backup of a wireless network through power carrier modulation; the number of the side cables is reduced, and the space requirement of station equipment rooms is greatly reduced;
6) The lightweight vehicle-mounted edge safety processor and the rail side edge safety processor are more beneficial to the improvement of the existing line; the equipment installation and wiring engineering quantity are minimized.
Drawings
FIG. 1 is a block diagram of a CBTC train control system based on 5G and time sensitive Ethernet as cores in accordance with the present invention;
fig. 2 is a network connection diagram of a CBTC train control system based on 5G and time sensitive ethernet as cores in accordance with the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, a CBTC train control system based on 5G and time sensitive ethernet, comprising:
the central safety processing server 1 is used for sending control commands to the trackside positioning module 2, the vehicle-mounted edge safety processor 3 and the trackside edge safety processor 4; the central security processing server 1 is in clock synchronization with a master clock by adopting an I EEE802.1AS protocol among the trackside positioning module 2, the vehicle-mounted edge security processor 3 and the trackside edge security processor 4, and information time stamps are added in communication messages among the central security processing server 1, the trackside positioning module 2, the vehicle-mounted edge security processor 3 and the trackside edge security processor 4, wherein the information time stamps are clocks in information acquisition; meanwhile, the central security processing server 1 interfaces with the external system 5 by using a wired TSN network. By adopting the I EEE802.1AS global clock synchronization technology, all data are marked in time when generated, and when faults occur, data alignment across professions can be performed, so that the accurate positioning of the faults is realized.
The trackside positioning module 2 is used for receiving a command sent by the central security processing server 1 through a wired TSN network and returning positioning information of the vehicle; the trackside positioning module 2 adopts a trackside active positioning and speed measuring technology; the central safety processing server 1 actively initiates communication handshake of the target train, a control model of the train is built in the central processor after the vehicle parameters are acquired from the trackside positioning module 2, the central safety processing server 1 controls the running of the train according to the control model of the train, a real-time speed control command is sent to the vehicle-mounted edge safety processor 3 through a 5G TSN network, and the vehicle-mounted edge safety processor 3 controls the train through a vehicle interface.
The vehicle-mounted edge safety processor 3 is used for receiving a real-time speed control command sent by the central safety processing server 1 through a 5G TSN network, controlling a train through a vehicle interface and returning the vehicle speed and the vehicle state; the vehicle-mounted edge safety processor 3 is in communication with the vehicle-mounted sensor interface and the vehicle interface, and the vehicle-mounted edge safety processor 3 pre-stores vehicle-related configuration data including vehicle interface points, vehicle interface protocols, vehicle length groupings, vehicle traction braking parameters, vehicle IDs and vehicle-mounted sensor data.
The track side edge safety processor 4 is used for receiving a monitoring control command sent by the central safety processing server 1 through a 5G TSN network or a wired TSN network, controlling a track side monitoring object and returning to the status of the track side monitoring object; the rail side edge safety processor 4 interfaces with the roadside monitoring object, which includes switches, annunciators, and operating buttons.
The track side safety processor 4 is integrally installed with the track side monitoring object by adopting a miniaturization technology, the track side safety processor supplies power to share with the track side monitoring object, the station power supply screen 6 utilizes a power line to carry out power carrier communication to the station power carrier communication adapter 7, the power carrier communication is used as a backup of a 5G TSN network, and when the 5G TSN network communication is interrupted, the track side monitoring object control capability is provided.
In an embodiment, the platform screen door may be interfaced with the rail alongside security processor 4 or with the central security processing server 1 via a wired TSN network.
In the embodiment, the station power supply panel 6 performs power carrier communication by using a power line to the station power carrier communication adapter 7, and the power carrier communication is used as a backup of the wired TSN network, and provides communication capability to the central security processing server 1 when the wired TSN network communication is interrupted.
In the embodiment, the data fed back by the trackside positioning module 2, the vehicle-mounted edge safety processor 3 and the trackside edge safety processor 4 to the central safety processing server 1 are classified according to the data safety level, and are divided into safety key information and non-safety key information, the safety key information is added into a highest priority transmission queue by a TSN wired network according to the ieee802.1qbv protocol, and is transmitted in a fixed time slot, and the non-safety key information is transmitted in a Best effort mode.
In the embodiment, the CBTC train control system adopts a general safety protocol, such as railway RSSP-1 protocol or SDT protocol of IEC 61375, and the like, so as to further ensure the safety of the system.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A CBTC train control system based on 5G and time sensitive ethernet as a core, comprising:
the central safety processing server is used for sending control commands to the trackside positioning module, the vehicle-mounted edge safety processor and the trackside edge safety processor;
the track side positioning module is used for receiving a command sent by the central security processing server through a wired TSN network and returning positioning information of the vehicle;
the vehicle-mounted edge safety processor is used for receiving a real-time speed control command sent by the central safety processing server through a 5G TSN network, controlling a train through a vehicle interface and returning the vehicle speed and the vehicle state;
and the track side edge safety processor is used for receiving a monitoring control command sent by the central safety processing server through a 5G TSN network or a wired TSN network, controlling the track side monitoring object and returning the status of the track side monitoring object.
2. The CBTC train control system based on 5G and time sensitive ethernet as defined in claim 1, wherein said central security processing server is clocked with said master clock by ieee802.1as protocol with said trackside positioning module, said onboard edge security processor and said trackside edge security processor, and wherein information time stamps are added to communication messages between said central security processing server and said trackside positioning module, said onboard edge security processor and said trackside edge security processor, said information time stamps being the clock at the time of information acquisition.
3. The CBTC train control system based on 5G and time sensitive ethernet as defined in claim 1 wherein said central security processing server interfaces with external systems using a wired TSN network.
4. The CBTC train control system based on 5G and time sensitive ethernet as a core of claim 1, wherein said trackside positioning module employs a trackside active positioning speed measurement technique.
5. The CBTC train control system based on 5G and time sensitive ethernet as recited in claim 1, wherein said on-board edge safety processor interfaces with on-board sensors and with vehicles, said on-board edge safety processor pre-storing vehicle related configuration data including vehicle interface points, vehicle interface protocols, vehicle length groupings, vehicle traction braking parameters, vehicle IDs and on-board sensor data.
6. The CBTC train control system based on 5G and time sensitive ethernet as recited in claim 1 wherein said rail side edge security processor interfaces with said rail side monitor objects including switches, annunciators and operating buttons.
7. A CBTC train control system based on 5G and time sensitive ethernet as claimed in claim 6, wherein the platform screen door interfaces with said rail side edge security processor or with said central security processing server via a wired TSN network.
8. The CBTC train control system based on the 5G and time sensitive ethernet as a core of claim 7, wherein said rail side edge safety processor is installed integrally with said rail side monitored object using a miniaturization technology, said rail side edge safety processing power supply is shared with said rail side monitored object, a station power supply screen uses a power supply line to perform power carrier communication to a station power carrier communication adapter, the power carrier communication is used as a backup of the 5G TSN network, and a control capability of the rail side monitored object is provided when the 5G TSN network communication is interrupted.
9. The CBTC train control system based on the 5G and time sensitive ethernet as recited in claim 8 wherein said station power screen utilizes a power line to perform power carrier communication with said station power carrier communication adapter, the power carrier communication being a backup of a wired TSN network, and providing communication capability to said central security processing server upon interruption of the wired TSN network communication.
10. The CBTC train control system based on the 5G and time sensitive ethernet as a core of claim 1, wherein data fed back by said trackside positioning module, said onboard edge safety processor and said trackside edge safety processor to said central safety processing server are classified according to data security level, and are classified into safety critical information and non-safety critical information, said safety critical information is added to a highest priority transmission queue by a TSN wired network according to ieee802.1qbv protocol, said safety critical information is transmitted in a fixed time slot, and said non-safety critical information is transmitted in Best effort mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311096963.1A CN117022404A (en) | 2023-08-29 | 2023-08-29 | CBTC train control system based on 5G and time sensitive Ethernet as cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311096963.1A CN117022404A (en) | 2023-08-29 | 2023-08-29 | CBTC train control system based on 5G and time sensitive Ethernet as cores |
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| CN117022404A true CN117022404A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311096963.1A Pending CN117022404A (en) | 2023-08-29 | 2023-08-29 | CBTC train control system based on 5G and time sensitive Ethernet as cores |
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| CN (1) | CN117022404A (en) |
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- 2023-08-29 CN CN202311096963.1A patent/CN117022404A/en active Pending
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