CN113839988A - Train multi-network convergence network control system and control method - Google Patents
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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Abstract
The invention discloses a multi-network convergence network control system and a control method for a train, wherein the multi-network convergence network control system comprises: the system comprises a train-level network and a vehicle-level network, wherein both the train-level network and the vehicle-level network use an Ethernet communication mode, and the core equipment and the communication network have redundancy. The network control method comprises the following steps: VOBC sends control instruction to CCU, two CCUs work in redundant mode, VCU realizes redundancy through two independent networks, and reasonable control method is adopted to ensure normal switching of redundancy. The gain effect of the invention overcomes the problem that the existing network control technology is not suitable for full-automatic driving trains, and provides a multi-network fusion network control system and a control method which have large signal transmission data volume, strong real-time performance, reasonable redundancy and stable and reliable work.
Description
Technical Field
The invention belongs to the technical field of rail transit vehicle control, and particularly relates to a train multi-network convergence network control system and a train multi-network convergence network control method.
Background
At present, a full-automatic driving train system is in a starting stage, a network control system mainly adopts the prior art of vehicles such as a single rail and a subway, buses such as WTB, MVB and CANopen are mostly adopted, and the problems of small data transmission quantity, large signal transmission time delay, low fusion degree, low reliability, low safety and the like exist.
How to design a reasonable network control system and a reasonable network control method, which solve the problems of small data transmission quantity, large signal transmission delay, low fusion degree, low reliability, low safety and the like in the prior art so as to meet the requirements of fully-automatic train driving, and are the problems to be solved urgently by technical staff in the field at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a train multi-network convergence network control system and a train multi-network convergence network control method, and solves the problems of small data transmission quantity, large signal transmission time delay, low convergence degree, low reliability, low safety and the like in the prior art.
The purpose of the invention is realized by the following technical scheme:
on one hand, the invention discloses a train multi-network fusion network control system, which comprises a train-level network control system and a vehicle-level network control system, wherein the train-level network system comprises two sets of Central Control Units (CCUs) arranged at the tail part of a train head, a vehicle-mounted signal controller (VOBC), a train-ground communication system and a Passenger Information System (PIS), the CCUs are respectively in data communication with the VOBC, the train-ground communication system and the Passenger Information System (PIS) through Ethernet backbone nodes (ETBN), and the two CCUs are redundant in hot standby; the vehicle-level network control system comprises a two-layer network control structure, wherein the first-layer network control structure comprises a Central Control Unit (CCU), a Vehicle Control Unit (VCU) and subsystems of all vehicles, the Central Control Unit (CCU) is communicated with the Vehicle Control Unit (VCU), the Central Control Unit (CCU) is communicated with the subsystems of all vehicles, the second-layer network control structure comprises the Vehicle Control Unit (VCU) and the subsystems of all vehicles, and the Vehicle Control Unit (VCU) is communicated with the subsystems of all vehicles.
According to a preferred embodiment, said ethernet backbone node ETBN is configured as an ethernet ring network structure.
According to a preferred embodiment, the ethernet backbone node ETBN includes, but is not limited to, using a three-layer switch, where the three-layer switch divides devices to be communicated into different VLANs, and the three-layer forwarding is performed between the VLAN devices through the ethernet backbone node ETBN to implement communication.
According to a preferred embodiment, in the second layer network control structure, the vehicle control unit VCU forwards data of the subsystem devices of each vehicle through the ethernet marshalling node ECNN.
According to a preferred embodiment, the ethernet marshalling node ECNN is not limited to being constructed using a mesh-tube type switch.
According to a preferred embodiment, the subsystems of each train include, but are not limited to, traction systems, RIOM, auxiliary systems, suspension systems, cooling systems, air conditioning systems, door systems.
According to a preferred embodiment, said on-board signal controller VOBC comprises an automatic train operation system ATO and an automatic train protection device ATP.
On the other hand, the invention also discloses a control method of the train multi-network convergence network, which adopts the train multi-network convergence network control system to execute the following control method: the vehicle-mounted signal controller VOBC sends a control instruction to the central control unit CCU, the two central control unit CCUs receive the control instruction, the two central control unit CCUs work in a redundancy mode, one of the two central control unit CCUs is configured as a main control unit, the other central control unit is configured as a secondary control unit, each section of vehicle is provided with two vehicle control units VCU, the two vehicle control units VCU are respectively communicated with the two central control unit CCUs through a network, and control of each section of train subsystem is completed based on the instruction of the main control unit.
According to a preferred embodiment, of the two central control units CCU, the primary control unit is configured to be able to read the communication information of each train subsystem and to send control commands to each train subsystem via the network; the secondary control unit is configured to be capable of reading communication information of each train subsystem and sending a control command to each train subsystem through the network after the network state of the primary control unit is invalid.
According to a preferred embodiment, the vehicle control unit VCU is configured to be able to detect the communication status of the train subsystem with which it communicates and to transmit the collected communication status data to the central control unit CCU, which completes the transmission right assignment of the vehicle control unit VCU based on the accepted communication status data.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that:
in the multi-network convergence network control system disclosed by the invention, two CCUs of a train-level network adopt hot standby redundancy and carry out data exchange through an Ethernet train line. The vehicle-level network forwards the data of the train subsystem equipment through the Ethernet marshalling network node ECNN, and except the RIOM, other subsystems have an Ethernet dual-homing structure. While RIOM relates to safety functions such as emergency traction and emergency braking, two RIOMs are adopted for each vehicle to be mutually redundant. Two ECNNs of each vehicle are arranged on two independent Ethernet networks, so that the system can not normally operate due to network breakdown.
In the control method of the multi-network fusion network disclosed by the invention, the VOBC sends a control instruction to the CCUs, the two CCUs work in a redundancy mode, the VCU realizes redundancy through the two independent networks, and the reasonable control method ensures the normal switching of the redundancy.
The control system and the control method overcome the problem that the prior art is not suitable for the requirement of the train in the prior art, and provide the network control system and the control method which have large signal transmission data volume, strong real-time performance, reasonable redundancy and stable and reliable work.
Drawings
Fig. 1 is a schematic structural diagram of a multi-network convergence network control system of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.
The technical solution of the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings, and the described embodiment is an example of a 2-consist fully-automatic driving embedded train, including MC1 cars and MC2 cars. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, fig. 1 is a schematic structural diagram of a multi-network convergence network control system according to the present invention. The system comprises a VOBC (voice over internet protocol) vehicle-mounted controller, a CCU (central control unit), a VCU (vehicle control unit), a VLAN (virtual local area network), a PIS (passenger information unit), an ETBN (Ethernet backbone network) node, an ECNN (Ethernet grouping network) node, an RIOM (remote input/output unit), a TCU (traction control unit), an SIV (auxiliary control unit), an MRR (MRR) suspension control unit, a KRR (cooling control unit), an HVAC (HVAC) air-conditioning control unit, an EDCU (electric vehicle door control unit), an FAS (fire control unit), an LCS (LCS) lighting control unit, an MRR suspension control unit, a BMS (battery management unit) and a CLS (collision system control unit).
The embodiment discloses a multi-network convergence network control system for a train, which comprises a train-level network control system and a vehicle-level network control system.
Preferably, the train-level network system comprises two sets of central control units CCU arranged at the tail of the train head, a vehicle-mounted signal controller VOBC, a train-ground communication system and a passenger information system PIS. And the CCU is in data communication with the vehicle-mounted signal controller VOBC, the vehicle-ground communication system and the passenger information system PIS through the Ethernet backbone node ETBN respectively. The two CCUs are redundant.
Preferably, the ethernet backbone node ETBN is configured as an ethernet ring network structure. The ring network is a fusion network of a PIS network and a train control network, and facilitates resource management and scheduling.
Preferably, the ethernet backbone node ETBN includes, but is not limited to, a three-layer switch, where the three-layer switch divides the devices to be communicated into different VLANs, and the three-layer forwarding is performed between the VLAN devices through the ethernet backbone node ETBN to implement communication.
Further, as shown in fig. 1, the VLIN numbers of the present example are divided as follows: the VOBC is VLIN1001, the CCU, VCU, ECNN and subsystem devices of the MC1 are VLIN1002, the CCU, VCU, ECNN and subsystem devices of the MC2 are VLIN1003, the PIS controller is VLIN1004, the PIS devices are VLIN1005, and the train-ground communication is VLIN 1006.
Preferably, the vehicle-mounted signal controller VOBC includes an automatic train operation system ATO and an automatic train protection device ATP. And the automatic driving control command sending and safety protection functions can be realized.
Preferably, the vehicle-level network control system comprises a two-layer network control structure. The first layer network control structure comprises a central control unit CCU, a vehicle control unit VCU and subsystems of all vehicles, wherein the central control unit CCU is communicated with the vehicle control unit VCU, and the central control unit CCU is communicated with the subsystems of all vehicles. The second layer network control structure includes a vehicle control unit VCU and subsystems of each vehicle, the vehicle control unit VCU communicating with the subsystems of each vehicle.
Preferably, in the second layer network control structure, the vehicle control unit VCU forwards data of the subsystem devices of each vehicle through the ethernet marshalling node ECNN. Besides RIOM, other subsystems have Ethernet dual-homing structure.
Further, the ethernet marshalling node ECNN is not limited to being constructed using a mesh-tube type switch. Each vehicle uses two network management type switches to communicate with the subsystem, and the two ECNNs are arranged on two different Ethernet networks, so that the system can not normally operate due to network paralysis.
Preferably, the subsystems of each train include, but are not limited to, traction systems, remote input output units RIOM, auxiliary systems, suspension systems, cooling systems, air conditioning systems, door systems.
Furthermore, the remote input and output unit RIOM relates to safety functions such as traction control, suspension control and emergency braking, so that two RIOMs are adopted by each vehicle to be mutually redundant.
Example 2
On the basis of the embodiment 1, the invention also discloses a control method of the train multi-network convergence network. The following control method is executed by using the train multi-network convergence network control system according to the foregoing embodiment 1.
Preferably, said on-board signal controller VOBC sends a control command to the central control unit CCU. The two central control units CCU receive control instructions and operate in a redundant mode, run with the same software, and configure one of the two central control units CCU as a primary control unit and the other as a secondary control unit. After power up, the CCU of the MC1 is the main control unit by default.
Preferably, each vehicle is provided with two vehicle control units VCUs as vehicle control masters, running the same software, and implementing redundancy functions through two independent networks, thus having no strong master or weak master, but both having the ability to send and receive information. And the two vehicle control units VCU communicate with the two central control units CCU via a network, respectively. And the control of each train subsystem is completed based on the instruction of the main control unit.
Preferably, the VOBC outputs a command that the VOBC at the local end is a data valid end to the multi-network convergence network control system, the multi-network convergence network control system determines which end of the VOBC is used according to the information, and the multi-network convergence network control system considers all information to be invalid when both ends are valid or both are invalid.
Preferably, in the two central control units CCU, the main control unit is configured to be able to read communication information of each train subsystem and to send control commands to each train subsystem via the network. The secondary control unit is configured to be capable of reading communication information of each train subsystem and sending a control command to each train subsystem through the network after the network state of the primary control unit is invalid.
Preferably, the vehicle control unit VCU is configured to be able to detect a communication status of the train subsystem with which it communicates and to transmit the collected communication status data to the central control unit CCU, which completes transmission authority assignment of the vehicle control unit VCU based on the accepted communication status data.
Further, when the communication between the VCU of one vehicle network and the train subsystem is interrupted, the other network is used as a backup. If one subsystem is detected to be in communication interruption with the VCU, and another VCU is detected to be in normal communication with the subsystem, normal communication is adopted. If the communication between the VCU and the CCU is interrupted, the VCU will be subject to hard-wired signals. For the train subsystem, which path to use for communicating data is judged according to the data valid signal sent by the VCU and the communication state of the VCU communicated with the data valid signal.
Further, all communication between the CCU and the VCU is interrupted, the CCU can take over the VCU completely, the ECNN is used for communicating with the subsystem, the state of the subsystem equipment is collected, key signals of the vehicle are collected through the RIOM and forwarded to the VOBC, and safety functions of emergency traction control, suspension control, emergency braking and the like are achieved.
In the multi-network convergence network control system disclosed by the invention, two CCUs of a train-level network adopt hot standby redundancy and carry out data exchange through an Ethernet train line. The vehicle-level network forwards the data of the train subsystem equipment through an Ethernet marshalling networking node (ECNN), and except the RIOM, other subsystems have an Ethernet dual-homing structure. The RIOM has higher safety functions related to emergency traction, emergency braking and the like, so that two RIOMs are adopted for each vehicle to be mutually redundant. Two ECNNs of each vehicle are arranged on two independent Ethernet networks, so that the system can not normally operate due to network breakdown.
In the control method of the multi-network fusion network disclosed by the invention, the VOBC sends a control instruction to the CCUs, the two CCUs work in a redundancy mode, the VCU realizes redundancy through the two independent networks, and the reasonable control method ensures the normal switching of the redundancy.
The control system and the control method overcome the problem that the prior art is not suitable for the requirement of the train in the prior art, and provide the network control system and the control method which have large signal transmission data volume, strong real-time performance, reasonable redundancy and stable and reliable work.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A multi-network convergence network control system of a train is characterized in that the multi-network convergence network control system comprises a train-level network control system and a vehicle-level network control system,
the train-level network system comprises two sets of Central Control Units (CCUs) arranged at the tail of a train head, a vehicle-mounted signal controller (VOBC), a train-ground communication system and a Passenger Information System (PIS), wherein the CCUs are respectively in data communication with the VOBC, the train-ground communication system and the Passenger Information System (PIS) through Ethernet backbone nodes (ETBN), and the two CCUs are redundant in hot standby;
the vehicle-level network control system comprises a two-layer network control structure, wherein the first-layer network control structure comprises a Central Control Unit (CCU), a Vehicle Control Unit (VCU) and subsystems of all vehicles, the Central Control Unit (CCU) is communicated with the Vehicle Control Unit (VCU), the Central Control Unit (CCU) is communicated with the subsystems of all vehicles, the second-layer network control structure comprises the Vehicle Control Unit (VCU) and the subsystems of all vehicles, and the Vehicle Control Unit (VCU) is communicated with the subsystems of all vehicles.
2. The train multi-network converged network control system of claim 1, wherein the ethernet backbone node ETBN is configured as an ethernet ring network architecture.
3. The train multi-network fusion network control system of claim 2, wherein the ethernet backbone node ETBN comprises a three-layer switch, the three-layer switch divides the devices to be communicated into different VLANs, and the devices of the VLANs are communicated by three-layer forwarding through the ethernet backbone node ETBN.
4. The train multi-network convergence network control system of claim 1, wherein in the second layer network control structure, the vehicle control unit VCU forwards data of the subsystem devices of each vehicle through an ethernet marshalling node ECNN.
5. The train multi-network convergence network control system of claim 4, wherein the Ethernet marshalling nodes ECNN are constructed using a mesh pipe type switch.
6. The train multi-network convergence network control system of claim 1, wherein the subsystems of each train comprise a traction system, a RIOM, an auxiliary system, a suspension system, a cooling system, an air conditioning system, and a door system.
7. The train multi-network convergence network control system of claim 1, wherein the vehicle-mounted signal controller VOBC comprises a train automatic operation system ATO and a train automatic protection device ATP.
8. A control method of a train multi-network convergence network, characterized in that the following control method is executed by using the train multi-network convergence network control system of any one of claims 1 to 7:
said onboard signal controller VOBC sends control commands to the central control unit CCU,
the two central control units CCU receive control commands and operate in a redundant mode and configure one of the two central control units CCU as a primary control unit and the other as a secondary control unit,
each vehicle is provided with two vehicle control units VCU which are respectively communicated with two central control units CCU through a network, and the control of each train subsystem is completed based on the instruction of the main control unit.
9. The method for controlling a multi-network converged network according to claim 8, wherein in the two central control units CCUs,
the main control unit is configured to be capable of reading communication information of each train subsystem and sending a control command to each train subsystem through a network;
the secondary control unit is configured to be capable of reading communication information of each train subsystem and sending a control command to each train subsystem through the network after the network state of the primary control unit is invalid.
10. The method of controlling a multi-network converged network of claim 9, wherein the vehicle control unit VCU is configured to be able to detect a communication status of a train subsystem with which it communicates and transmit the collected communication status data to the central control unit CCU, the central control unit CCU completing the transmission authority assignment of the vehicle control unit VCU based on the accepted communication status data.
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| CN114567652A (en) * | 2022-01-19 | 2022-05-31 | 中车南京浦镇车辆有限公司 | Communication redundancy-based asymmetric partition real-time Ethernet train network system |
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