CN113839988B - Train multi-network integration network control system and control method - Google Patents
Train multi-network integration network control system and control method Download PDFInfo
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- 230000010354 integration Effects 0.000 title abstract description 4
- 238000004891 communication Methods 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 claims description 3
- 238000005339 levitation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 4
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Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/044—Network management architectures or arrangements comprising hierarchical management structures
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Abstract
The invention discloses a train multi-network convergence network control system and a control method, wherein the multi-network convergence network control system comprises: the train-level network and the vehicle-level network both use an Ethernet communication mode, and the core equipment and the communication network have redundancy. The network control method comprises the following steps: the VOBC sends a control instruction to the CCUs, the two CCUs work in a redundancy mode, the VCU realizes redundancy through two independent networks, and a reasonable control method is adopted to ensure the normal switching of the redundancy. The gain effect of the invention comprises overcoming the problem that the existing network control technology is not suitable for the full-automatic driving train, and providing a multi-network integration network control system and a control method which have the advantages of large signal transmission data quantity, strong real-time performance, reasonable redundancy and stable and reliable operation.
Description
Technical Field
The invention belongs to the technical field of rail transit vehicle control, and particularly relates to a train multi-network integration network control system and a 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 monorails, subways and the like, and most of network control systems adopt buses such as WTB, MVB, CANopen and the like, so that 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 control method, and 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 full-automatic driving trains, and the method is a problem to be solved by technicians in the current field.
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 control method, and solves the problems of small data transmission quantity, large signal transmission delay, low convergence degree, low reliability, low safety and the like in the prior art.
The aim of the invention is achieved by the following technical scheme:
on one hand, the invention discloses a train multi-network convergence 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 CCU, a vehicle-mounted signal controller VOBC, a train-ground communication system and a passenger information system PIS, which are arranged at the tail part of a train head, the central control units CCU respectively perform data communication with the vehicle-mounted signal controller VOBC, the train-ground communication system and the passenger information system PIS through Ethernet backbone nodes ETBN, and the two central control units CCU are hot standby redundant; 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 each section of vehicle, the Central Control Unit (CCU) is communicated with the Vehicle Control Unit (VCU), the Central Control Unit (CCU) is communicated with the subsystems of each section of vehicle, and the second-layer network control structure comprises the Vehicle Control Unit (VCU) and the subsystems of each section of vehicle, and the Vehicle Control Unit (VCU) is communicated with the subsystems of each section of vehicle.
According to a preferred embodiment, the ethernet backbone 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 the devices to be communicated into different VLANs, and three-layer forwarding is performed between the VLAN devices through the ethernet backbone node ETBN to achieve communication.
According to a preferred embodiment, in the layer two network control architecture, the vehicle control unit VCU forwards data of the subsystem devices of the individual vehicles via the ethernet marshalling network nodes ECNN.
According to a preferred embodiment, the ethernet marshalling nodes ECNN are not limited to being built using network management switches.
According to a preferred embodiment, subsystems of each train include, but are not limited to, traction systems, RIOM, auxiliary systems, levitation systems, cooling systems, air conditioning systems, door systems.
According to a preferred embodiment, the on-board signal controller VOBC comprises a train automatic operation system ATO and a train automatic protection device ATP.
On the other hand, the invention also discloses a control method of the train multi-network convergence network, which is implemented by adopting the train multi-network convergence network control system as described above and comprises the following steps: the vehicle-mounted signal controller VOBC sends control instructions to the central control units CCU, the two central control units CCU receive the control instructions, the two central control units CCU work in a redundancy mode, one of the two central control units CCU is configured to be a primary control unit, the other of the two central control units CCU is configured to be 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 units CCU through a network, and control of each section of train subsystem is completed based on the instructions of the primary control units.
According to a preferred embodiment, in the two central control units CCU, the main 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 a network; the secondary control unit is configured to be capable of reading communication information of each train subsystem and capable of sending control commands to each train subsystem through a network after the network state of the primary control unit fails.
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 distribution of the transmission authority of the vehicle control unit VCU based on the received communication status data.
The foregoing inventive subject matter and various further alternatives thereof may be freely combined to form a plurality of alternatives, all of which are employable and claimed herein; and the invention can be freely combined between the (non-conflicting choices) choices and between the choices and other choices. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The invention has the beneficial effects that:
in the multi-network convergence network control system disclosed by the invention, two CCUs of the train-level network adopt hot standby redundancy, and data exchange is carried out through an Ethernet train line. The vehicle-level network forwards the data of the train subsystem equipment through an Ethernet marshalling network node ECNN, and other subsystems except RIOM have an Ethernet dual-homing structure. The RIOM relates to safety functions such as emergency traction, emergency braking and the like, so that each vehicle adopts two RIOM mutually redundant. The two ECNNs of each vehicle are arranged on two independent Ethernet networks, so that the system is prevented from being incapable of operating normally due to network paralysis.
In the control method of the multi-network convergence network disclosed by the invention, the VOBC sends a control instruction to the CCU, the two CCUs work in a redundancy mode, the VCU realizes redundancy through two independent networks, and the reasonable control method ensures the normal switching of the redundancy.
The control system and the control method solve the problem that the prior art is not suitable for the train requirement in the prior art, and provide the network control system and the control method which have the advantages of large signal transmission data quantity, strong instantaneity, reasonable redundancy and stable and reliable operation.
Drawings
Fig. 1 is a schematic structural diagram of a multi-network converged network control system of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that, for the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, 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 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the present invention, if a specific structure, connection relationship, position relationship, power source relationship, etc. are not specifically written, the structure, connection relationship, position relationship, power source relationship, etc. related to the present invention can be known by those skilled in the art without any creative effort.
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and the described embodiments take a 2-group fully automatic driving embedded train as an example, and include an MC1 car and an MC2 car. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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. Wherein VOBC is a signal vehicle-mounted controller, CCU is a central control unit, VCU is a vehicle control unit, VLAN is a virtual local area network, PIS is a passenger information unit, ETBN is an Ethernet backbone node, ECNN is an Ethernet marshalling network node, RIOM is a remote input/output unit, TCU is a traction control unit, SIV is auxiliary control unit, MRR is suspension control unit, KRR is cooling control unit, HVAC is air conditioner control unit, EDCU is door control unit, FAS is fire control unit, LCS is lighting control unit, MRR is suspension control unit, BMS is battery management unit, CLS is collision system control unit.
The embodiment discloses a train multi-network convergence network control system, 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. The central control unit 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 central control units CCU are hot standby redundant.
Preferably, the ethernet backbone node ETBN is configured as an ethernet ring network structure. The looped network is a fusion network of the PIS network and the train control network, and is convenient for resource management and scheduling.
Preferably, the ethernet backbone node ETBN includes, but is not limited to, using a three-layer switch, where the three-layer switch divides the devices to be communicated into different VLANs, and three-layer forwarding is performed between the VLAN devices through the ethernet backbone node ETBN to achieve communication.
Further, as shown in fig. 1, the VLIN number of the present example is divided as follows: the VOBC is VLIN1001, the CCU, VCU, ECNN and subsystem devices of MC1 are VLIN1002, the CCU, VCU, ECNN and subsystem devices of MC2 are VLIN1003, the PIS controller is VLIN1004, the PIS device is VLIN1005, and the on-board communication is VLIN1006.
Preferably, the on-board signal controller VOBC includes a train automatic operation system ATO and a train automatic protection device ATP. The automatic driving control command sending and safety protection functions can be realized.
Preferably, the vehicle-level network control system includes a two-layer network control structure. The first-tier network control architecture includes a central control unit CCU in communication with the vehicle control unit VCU, a vehicle control unit VCU in communication with the subsystems of the vehicles of each segment, and subsystems of the vehicles of each segment. The second-tier network control architecture includes a vehicle control unit VCU in communication with subsystems of each of the vehicles.
Preferably, in the second-layer network control structure, the vehicle control unit VCU forwards data of subsystem devices of each section of the vehicle through the ethernet marshalling network node ECNN. And other subsystems except RIOM have Ethernet dual-homing structure.
Further, the ethernet marshalling nodes ECNN are not limited to being constructed using a network management type switch. Each vehicle uses two network management type exchanges to communicate with the subsystem, and two ECNNs are arranged on two different Ethernet networks, so that the system can not normally operate due to network paralysis.
Preferably, subsystems of each train include, but are not limited to, traction systems, remote input output units RIOM, auxiliary systems, levitation systems, cooling systems, air conditioning systems, door systems.
Further, the remote input/output unit RIOM relates to safety functions such as traction control, suspension control, emergency braking and the like, so that each vehicle adopts two RIOM which are 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 performed using the train multi-network convergence network control system as in the foregoing embodiment 1.
Preferably, the on-board signal controller VOBC sends control instructions to the central control unit CCU. The two central control units CCU receive control instructions and operate in a redundant mode with the same software running 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 default MC1 is the main control unit.
Preferably, each vehicle is provided with two vehicle control units VCU, running the same software as the vehicle control master, implementing redundant functions via two separate networks, so that there is no division of strong and weak masters, but they all have 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 instructions of the main control unit.
Preferably, the VOBC outputs a command that the local VOBC is a data valid end to the multi-network convergence network control system, and the multi-network convergence network control system determines which end of the VOBC is used according to the information, and when both ends are valid or invalid, the multi-network convergence network control system considers all the information invalid.
Preferably, among the two central control units CCU, the main 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 through a network. The secondary control unit is configured to be capable of reading communication information of each train subsystem and capable of sending control commands to each train subsystem through a network after the network state of the primary control unit fails.
Preferably, the vehicle control unit VCU is configured to be able to detect a communication status of a train subsystem with which it communicates, and to transmit the collected communication status data to the central control unit CCU, which completes the transmission authority allocation of the vehicle control unit VCU based on the received communication status data.
Further, when the VCU of one vehicle network is disconnected from communication with the train subsystem, the other network is used as a backup. If a communication interruption between a certain subsystem and the VCU is detected, and another VCU is detected to be communicated normally with the subsystem, normal communication is adopted. If the VCU and CCU communication is interrupted, the VCU will assert the hard-wire signal. For the train subsystem, which communication data is adopted is judged according to the data effective signal sent by the VCU and the communication state of the VCU communicated with the data effective signal.
Further, the CCU can completely take over the VCU when all the communication between the CCU and the VCU is interrupted, communicate with the subsystem through the ECNN, collect the equipment state of the subsystem, collect the key signals of the vehicle through the RIOM, and transmit the key signals to the VOBC, so that the safety functions of emergency traction control, suspension control, emergency braking and the like are realized.
In the multi-network convergence network control system disclosed by the invention, two CCUs of the train-level network adopt hot standby redundancy, and data exchange is carried out through an Ethernet train line. The vehicle-level network forwards the data of the train subsystem equipment through an Ethernet marshalling network node (ECNN), and other subsystems except RIOM have an Ethernet dual-homing structure. The RIOM has higher safety functions related to emergency traction, emergency braking and the like, so that each vehicle adopts two RIOM mutually redundant. The two ECNNs of each vehicle are arranged on two independent Ethernet networks, so that the system is prevented from being incapable of operating normally due to network paralysis.
In the control method of the multi-network convergence network disclosed by the invention, the VOBC sends a control instruction to the CCU, the two CCUs work in a redundancy mode, the VCU realizes redundancy through two independent networks, and the reasonable control method ensures the normal switching of the redundancy.
The control system and the control method solve the problem that the prior art is not suitable for the train requirement in the prior art, and provide the network control system and the control method which have the advantages of large signal transmission data quantity, strong instantaneity, reasonable redundancy and stable and reliable operation.
The foregoing basic embodiments of the invention, as well as other embodiments of the invention, can be freely combined to form numerous embodiments, all of which are contemplated and claimed. In the scheme of the invention, each selection example can be arbitrarily combined with any other basic example and selection example. Numerous combinations will be apparent to those skilled in the art.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A train multi-network convergence network control system 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 control system comprises two sets of central control units CCU, a vehicle-mounted signal controller VOBC, a train-ground communication system and a passenger information system PIS, wherein the two sets of central control units CCU, the vehicle-mounted signal controller VOBC, the train-ground communication system and the passenger information system PIS are arranged at the tail part of a train head, the central control units CCU are in data communication with the vehicle-mounted signal controller VOBC, the train-ground communication system and the passenger information system PIS through Ethernet backbone nodes ETBN, and the two central control units CCU are in hot standby redundancy;
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 each section of vehicle, the Central Control Unit (CCU) is communicated with the Vehicle Control Unit (VCU), the Central Control Unit (CCU) is communicated with the subsystems of each section of vehicle, and the second-layer network control structure comprises the Vehicle Control Unit (VCU) and the subsystems of each section of vehicle, and the Vehicle Control Unit (VCU) is communicated with the subsystems of each section of vehicle;
the train multi-network convergence network control system executes the following control method:
the on-board signal controller VOBC sends control instructions to the central control unit CCU,
the two central control units CCU receive control instructions, and the two central control units CCU operate in a redundant mode, and one of the two central control units CCU is configured as a primary control unit and the other as a secondary control unit,
each section of vehicle is provided with two vehicle control units VCU, and the two vehicle control units VCU are respectively communicated with two central control units CCU through a network, and control of each section of train subsystem is completed based on instructions of a main control unit.
2. The train multi-network convergence network control system as claimed in claim 1, wherein the ethernet backbone ETBN is configured as an ethernet ring network structure.
3. The train multi-network convergence 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 each VLAN perform three-layer forwarding through the ethernet backbone node ETBN to realize communication.
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 subsystem devices of each section of vehicles through an ethernet marshalling network node ECNN.
5. The train multi-network convergence network control system of claim 4, wherein said Ethernet marshalling network nodes ECNN are constructed using a mesh management type switch.
6. The train multi-network convergence network control system of claim 1, wherein each train subsystem comprises a traction system, RIOM, auxiliary system, levitation system, cooling system, air conditioning system, door system.
7. The train multi-network convergence network control system of claim 1, wherein said on-board signal controller VOBC comprises a train automatic operation system ATO and a train automatic protection device ATP.
8. The train multi-network convergence network control system as claimed in claim 1, wherein among said two central control units CCU,
the main control unit is configured to be capable of reading communication information of each train subsystem and sending control commands 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 capable of sending control commands to each train subsystem through a network after the network state of the primary control unit fails.
9. The train multi-network convergence network control system of claim 8, wherein said vehicle control unit VCU is configured to detect a communication status of a train subsystem in communication therewith and transmit the collected communication status data to a central control unit CCU, said central control unit CCU completing a transmission authority allocation of the vehicle control unit VCU based on the received 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 |
| CN114475666B (en) * | 2022-02-24 | 2023-05-26 | 中车青岛四方车辆研究所有限公司 | Subway signal reconnection control method and frame based on vehicle network fusion |
| CN114670897B (en) * | 2022-04-28 | 2023-11-17 | 中车青岛四方车辆研究所有限公司 | Traction braking fusion system and method based on two-stage control architecture |
| CN115782963A (en) * | 2022-10-31 | 2023-03-14 | 中国铁路通信信号股份有限公司 | Train operation control method and system |
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| 列车通信网络并行冗余方法与协议的研究;靳建宇;王立德;简捷;申萍;刘彪;;铁道学报(第12期);全文 * |
| 时速２５０ｋｍ 标准动车组以太网控车技术研究;徐燕芬;《铁道车辆》;第1节 * |
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