CN113242273A - Train network, communication method, train, electronic device, and storage medium - Google Patents
Train network, communication method, train, electronic device, and storage medium Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 abstract description 40
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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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- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
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- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
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- H04L12/42—Loop networks
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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Abstract
The invention provides a train network, a communication method, a train, an electronic device and a storage medium. Wherein, the train network includes: a train-level backbone network, an internal Ethernet network and a vehicle-level Ethernet network; the train-level backbone network comprises ETBN exchangers configured by train subunits, and the ETBN exchangers are connected in a bus type topological structure; the vehicle-level Ethernet comprises an ECNN switch configured by a carriage and equipment in the carriage; the ECNN switches are connected in a ring topology structure, and the equipment is connected with the ECNN switches through Ethernet interfaces; the central control unit is connected with the ECNN switch; the ETBN exchanger in the train-level backbone network is connected with any ECNN exchanger in the vehicle-level Ethernet through the internal Ethernet; all the equipment IP addresses in the same subunit are different; the IP addresses of the devices with the same type and corresponding positions in different subunits are the same. The speed and the stability of train information transmission can be improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a train network, a communication method, a train, an electronic device, and a storage medium.
Background
At present, most Train Network control systems adopt a Train Communication Network (TCN), a Train level adopts a twisted Wire Train Bus (WTB) to realize cross-unit and cross-marshalling Train level Communication and undertake a reconnection data transmission function, and a Vehicle level adopts a Multifunctional Vehicle Bus (MVB) to realize Vehicle internal Communication and control.
However, in the current train communication network, the data communication amount is continuously increased, the traditional train network control system has the problem of small bandwidth, and the diagnosis equipment based on the TCN network is difficult to meet the requirements of uploading and downloading files at high speed, so that the efficiency of train diagnosis and maintenance is reduced.
Therefore, how to provide a train network, a communication method, a train, an electronic device and a storage medium to improve the speed and stability of train information transmission and improve the efficiency of maintenance and diagnosis becomes a problem to be solved urgently.
Disclosure of Invention
The invention provides a train network, a communication method, a train, an electronic device and a storage medium, aiming at the defects in the prior art.
The present invention provides a train network comprising: a train-level backbone network, an internal Ethernet network and a vehicle-level Ethernet network;
the train-level backbone network comprises ETBN exchangers configured by train subunits, and the ETBN exchangers are connected in a bus type topological structure; the train sub-unit comprises a plurality of carriages in a train and a central control unit; each compartment comprises a plurality of devices;
the vehicle-level Ethernet comprises an ECNN switch of the carriage configuration and equipment in the carriage; the ECNN switches are connected in a ring topology structure, and the device is connected with the ECNN switches through Ethernet interfaces; the central control unit is connected with the ECNN switch;
the ETBN switch in the train-level backbone network is connected with any ECNN switch in the vehicle-level Ethernet through the internal Ethernet; wherein,
all the equipment IP addresses in the same subunit are different; the IP addresses of the devices with the same type and corresponding positions in different subunits are the same.
The train network provided by the invention further comprises: an Ethernet repeater;
the ETBN exchanger and the Ethernet repeater in the train-level backbone network are connected in a bus type topology structure.
According to the train network provided by the invention, the train-level Ethernet is connected by a two-channel data link.
According to the train network provided by the invention, the ETBN exchanger is used for determining the dynamic IP address of the target equipment according to the domain name of the target equipment and sending the dynamic IP address of the target equipment to the client.
The invention provides a train communication method realized based on the train network, which comprises the following steps:
the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name;
determining a target device dynamic IP address based on the target device domain name;
and sending the dynamic IP address of the target equipment to the client so that the client communicates with the target equipment based on the dynamic IP address.
According to the train communication method provided by the invention, the domain name comprises the following steps: a device domain name, a vehicle domain name, and a group domain name;
the grouped domain name is used for representing a target subunit corresponding to the target equipment; the vehicle domain name is used for representing a target compartment corresponding to target equipment; the device domain name is used to represent a target device.
The invention provides a train communication method realized based on the train network, which comprises the following steps:
a client sends a communication request to the ETBN exchanger so that the ETBN exchanger determines a target equipment dynamic IP address based on a target equipment domain name in the communication request;
receiving a dynamic IP address of target equipment sent by the ETBN exchanger;
communicating with the target device based on the target device dynamic IP address.
The invention further provides a train, and the train is provided with the train network.
The invention also provides electronic equipment which comprises a memory and a processor, wherein the processor and the memory finish mutual communication through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the various steps of the train communication method as described above.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the train communication method as described above.
The train network, the communication method, the train, the electronic equipment and the storage medium provided by the invention realize information transmission among units of the train and information transmission among carriages in the units by setting the train-level backbone network, the vehicle-level Ethernet and the internal Ethernet. The cross-unit maintenance of the equipment is realized, the speed and the stability of train information transmission are improved, and the maintenance and diagnosis efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a train network topology according to the present invention;
fig. 2 is a second schematic diagram of a train network topology provided by the present invention;
FIG. 3 is a flow chart of a train communication method provided by the present invention;
fig. 4 is a schematic diagram of a DNS protocol message format provided by the present invention;
FIG. 5 is a schematic diagram of a train communication process provided by the present invention;
FIG. 6 is a second flowchart of a train communication method provided by the present invention;
fig. 7 is a schematic physical structure diagram of an electronic device provided in the present invention.
Reference numerals:
1: an ETBN switch; 2: an ECNN switch;
3: equipment; 4: an Ethernet repeater.
Detailed Description
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
The present invention provides a train network comprising: a train-level backbone network, an internal Ethernet network and a vehicle-level Ethernet network;
the train-level backbone network comprises ETBN exchangers configured by train subunits, and the ETBN exchangers are connected in a bus type topological structure; the train sub-unit comprises a plurality of carriages in a train and a central control unit; each compartment comprises a plurality of devices;
the vehicle-level Ethernet comprises an ECNN switch of the carriage configuration and equipment in the carriage; the ECNN switches are connected in a ring topology structure, and the device is connected with the ECNN switches through Ethernet interfaces; the central control unit is connected with the ECNN switch;
the ETBN switch in the train-level backbone network is connected with any ECNN switch in the vehicle-level Ethernet through the internal Ethernet; wherein,
all the equipment IP addresses in the same subunit are different; the IP addresses of the devices with the same type and corresponding positions in different subunits are the same.
Specifically, when a train formation is performed, the train may be divided into a plurality of sub-units, each sub-unit includes a plurality of cars, and each car includes a plurality of devices 3.
For example, taking a train composed of 16 cars as an example, the network system divides the long-range train into 4 subunits, wherein each subunit includes four cars, i.e., 1-4 cars, 5-8 cars, 9-12 cars and 13-16 cars, for a total of four subunits. It should be noted that the number of cars in the train set can be adjusted according to actual conditions, and the present invention is not limited to this.
Fig. 1 is a schematic diagram of a train network topology provided by the present invention, fig. 2 is a schematic diagram of a second train network topology provided by the present invention, as shown in fig. 1 and fig. 2, fig. 1 shows a network topology link structure of a sub-unit, and fig. 2 shows a network topology link structure of two interconnected sub-units. With vertical dashed lines separating the different cars.
Each unit is provided with an etb (ethernet Train backbone) backbone switch capable of identifying network nodes, namely an ETBN switch 1, and the ETBN switches 1 in the Train-level backbone are linked in a bus topology structure to realize information transmission among the units in the Train.
Each compartment in each unit is configured with an ecn (ethernet Train constellation) marshalling network switch, that is, an ECNN switch 2, and the ECNN switches 2 in the vehicle-level ethernet are connected by adopting a ring topology structure, so that information transmission between vehicles in the unit is realized. Each subsystem controller (used for controlling equipment 3 in a carriage) in each vehicle is connected with the ECNN switch 2 through an industrial Ethernet interface, and comprises systems of traction, braking, vehicle doors, air conditioners and the like, so that information transmission of all equipment in the unit is realized.
In each unit, the ETBN switch 1 in the train-level backbone network is connected to any one of the ECNN switches 2 in the vehicle-level ethernet network through the internal ethernet network.
The four units are all provided with a Central Control Unit (CCU), the central control unit is directly connected with the grouping network switch ECNN and is communicated with each system in the unit to receive and transmit data, and meanwhile, the central control unit is indirectly connected with the ETBN through Ethernet communication between the ECNN and the ETBN to receive and transmit full-column data. The central control unit needs to send the marshalling information of the train to each subsystem, so as to realize the control and maintenance of the train and control each system of the unit.
The central control unit controls each traction unit in the train and realizes the data transceiving of all components. If the IP addresses of all the unit devices are different, 4 sets of software are developed by the central control unit with 4 units, so that the development and later maintenance difficulty of the central control unit software is greatly increased.
In order to reduce the workload of software development of the central control unit. The consistency of the software of each central control unit, namely the same set of control software, needs to be ensured. It is necessary to require that the device configuration information of the same location of 4 units is consistent, and it is specified that the configuration parameters of all devices with ethernet interfaces in each unit are different (the IP addresses of all devices in each sub-unit are different), but the ethernet configuration parameters of 4 units are the same (the IP addresses of the devices with the same type and corresponding locations in different sub-units are the same).
Namely, in a train with 16-section train marshalling, the equipment information of 1 train, 8 trains, 9 trains and 16 trains are consistent, the equipment of 2 trains, 7 trains, 10 trains and 15 trains is consistent, the equipment of 3 trains, 6 trains, 11 trains and 14 trains is consistent, and the equipment of 4 trains, 5 trains, 12 trains and 13 trains is consistent. For example: the traction converter IP addresses of car 2 and car 4 in the first unit are different, but the traction converter IP addresses of car 2, car 7, car 10 and car 15 in different units are the same.
It should be noted that, in order to make the drawings clearer, the reference numbers of the devices in fig. 1 and 2 are all 3, and the specific device types and installation positions are set according to actual situations, which is not limited by the present invention.
It should be noted that, in fig. 1 and fig. 2, the ETBN switch and the ECNN switch configured for each car in each unit are both provided redundantly, and can be replaced with a standby switch in time when the main switch fails, so as to ensure the stability of communication. In practical applications, the specific setting method may be adjusted according to practical situations, which is not limited in the present invention. The train network provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units by arranging the train-level backbone network, the vehicle-level Ethernet and the internal Ethernet. The data related to the running state of the vehicle can be collected through the Ethernet, and after logical judgment processing is carried out on the data, the data are sent to various subsystems such as traction, braking, auxiliary power supply and air conditioners which are connected to a train network through the Ethernet, so that control, monitoring and fault diagnosis are carried out on the subsystems. The problem that the bandwidth of the conventional train network system is small at present is solved, and the stable and rapid transmission of increasingly train data is ensured. The cross-unit maintenance of the equipment is realized, and the maintenance diagnosis efficiency is improved.
Optionally, the train network provided by the present invention further includes: an Ethernet repeater;
the ETBN exchanger and the Ethernet repeater in the train-level backbone network are connected in a bus type topology structure.
Specifically, because the longest communication distance of the Ethernet cannot exceed 100 meters, and the ETBN switch between grouped sub-units may exceed the communication distance, in order to ensure the communication of the train network system, an Ethernet RP repeater 4 (ERPT for short) may be further provided to amplify the transmission signal, thereby ensuring the communication quality.
It is understood that, considering the communication distance and the redundancy configuration, two redundant ETBN switches may be disposed in any car of the same unit, and the ethernet repeater disposition position may be set according to the actual requirement, which is not limited by the present invention.
The train network provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units by arranging the train-level backbone network, the vehicle-level Ethernet and the internal Ethernet. And an Ethernet repeater is arranged to amplify the transmission signal and ensure the communication quality. The cross-unit maintenance of the equipment is realized, the speed and the stability of train information transmission are improved, and the maintenance and diagnosis efficiency is improved.
Optionally, according to the train network provided by the present invention, the train-level ethernet networks are connected by a dual-channel data link.
Specifically, the train-level ethernet employs a dual-channel data link, wherein a single channel failure does not affect the communication function. The ETBN exchanger and the Ethernet repeater have a bypass relay function, and automatically bypass under the condition of failure or power failure without influencing the whole link communication of the train-level Ethernet.
The train network provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units by arranging the train-level backbone network, the vehicle-level Ethernet and the internal Ethernet. The train-level Ethernet is connected by a double-channel data link, so that the communication function of the train is guaranteed when a single channel fails, and the communication stability is improved. The cross-unit maintenance of the equipment is realized, the speed and the stability of train information transmission are improved, and the maintenance and diagnosis efficiency is improved.
Optionally, according to the train network provided by the present invention, the ETBN switch is configured to determine a dynamic IP address of the target device according to the domain name of the target device, and send the dynamic IP address of the target device to the client.
Specifically, all the equipment IP addresses in the subunits are different, and the IP addresses of the equipment at the same position in different units are the same, so that the equipment can only be connected to the equipment of the subunit through a fixed IP address access mode, and the equipment of the whole train cannot be accessed.
Taking a train composed of 16 cars as an example, in the prior art, when devices at the same position of 4 different units use the same IP address, each unit is independently networked through a grouping network switch ECNN, and communication between the units can only be achieved through ETBN. When a notebook computer is used as a maintenance end and connected to the ECNN switch, only the equipment of the unit where the corresponding ECNN switch is located can be accessed through a fixed IP mode, and other unit equipment cannot be accessed through ETBN, so that difficulty is caused to equipment maintenance.
In order to enable the Ethernet to have a control function and a single-point maintenance function, all Ethernet equipment of a whole train can be accessed through an Ethernet switch connected with any carriage, so that the equipment maintenance function is realized.
The maintenance equipment (such as a notebook computer) serves as a client, the maintenance equipment sends a communication request through a DNS protocol, and an ETBN exchanger in the train network serves as a server. The ETBN exchanger receives a communication request of a client, wherein the communication request comprises a target equipment domain name. The target device dynamic IP address (global IP of the target device) is determined based on the target device domain name. And sending the dynamic IP address of the target equipment to the client through a DNS protocol, and communicating with the target equipment by using the dynamic IP address after the client receives the dynamic IP address.
The train network provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units by arranging the train-level backbone network, the vehicle-level Ethernet and the internal Ethernet. The ETBN exchanger is used as a server, receives a communication request of a client, determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request through a domain name resolution technology, can quickly and accurately determine the address of the target equipment during communication, realizes cross-unit maintenance of the equipment, improves the speed and stability of train information transmission, can perform functions of software upgrading, fault downloading, online monitoring and the like while realizing train control information transmission, and improves the efficiency of maintenance diagnosis.
Fig. 3 is a flowchart of a train communication method provided by the present invention, and as shown in fig. 3, the present invention provides a train communication method implemented based on the train network, including:
step S301, the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name;
step S302, determining a dynamic IP address of the target device based on the domain name of the target device;
step S303, sending the dynamic IP address of the target device to the client, so that the client communicates with the target device based on the dynamic IP address.
Specifically, because the IP addresses of devices at the same position in different units are the same, the devices can only be connected to the unit in a fixed IP address access mode, and the devices of the whole train cannot be accessed. Causing difficulty in maintenance of the equipment.
In order to enable the Ethernet to have a control function and a single-point maintenance function, all Ethernet equipment of a whole train can be accessed through an Ethernet switch connected with any carriage, so that the equipment maintenance function is realized. The invention provides a train communication method, and the method of an ETBN exchanger side comprises the following steps:
fig. 4 is a schematic diagram of a DNS protocol message format provided by the present invention, as shown in fig. 4, a client sends a communication request to an ETBN switch through a DNS protocol, and in step S301, the ETBN switch serves as a server and receives the communication request sent by the client through the DNS protocol, where the communication request includes a domain name of a target device.
It should be noted that one domain name corresponds to one IP address, and one IP address may correspond to a plurality of domain names. The domain name resolution protocol (DNS) maps host domain names and email addresses that are easy to remember to IP addresses that are easily recognized by computers. When the scheme is specifically applied, the structure setting and the resolution method of the domain name can be adjusted according to actual requirements, and the invention is not limited to this.
In step S302, the ETBN switch calls a domain name resolution function, and determines a dynamic IP address of the target device based on the acquired domain name of the target device.
Specifically, the program for searching the dynamic IP address may be adjusted according to actual requirements, which is not limited in the present invention.
In step S303, the ETBN switch sends the determined dynamic IP address of the target device to the client, so that the client communicates with the target device based on the dynamic IP address after receiving the dynamic IP address.
The Ethernet switch connected with any carriage can be ensured to access all Ethernet equipment of the whole train, and the equipment maintenance function is realized. That is, the notebook computer (client) opens a piece of maintenance software, determines the dynamic IP address of the target device through any ETBN switch in the train network, and communicates with any target device. The maintenance software can only access one device at the same time, and can realize the access of a plurality of target devices in a mode of opening a plurality of maintenance software.
It should be noted that the equipment maintenance is only used as a specific example of train network communication, and in addition, the train network also communicates based on different requirements, the train communication method provided by the present invention is widely applicable to a communication process requiring communication connection establishment based on an IP address, and can be adjusted based on actual conditions in actual applications, which is not limited by the present invention.
The train communication method provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units through a train-level backbone network, a vehicle-level Ethernet and an internal Ethernet which are arranged in a train network. The ETBN exchanger is used as a server, receives a communication request of a client, determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request through a domain name resolution technology, can quickly and accurately determine the address of the target equipment during communication, realizes cross-unit maintenance of the equipment, improves the speed and stability of train information transmission, can perform functions of software upgrading, fault downloading, online monitoring and the like while realizing train control information transmission, and improves the efficiency of maintenance diagnosis.
Optionally, according to the train communication method provided by the present invention, the domain name includes: a device domain name, a vehicle domain name, and a group domain name;
the grouped domain name is used for representing a target subunit corresponding to the target equipment; the vehicle domain name is used for representing a target compartment corresponding to target equipment; the device domain name is used to represent a target device.
Specifically, the domain name includes: a device domain name, a vehicle domain name, and a group domain name.
For example: fig. 5 is a schematic diagram of a train communication process provided by the present invention, and as shown in fig. 5, the domain name adopts a 3-level structure, i.e., devlabel. The grouped domain name is used for representing a target subunit corresponding to the target equipment; the vehicle domain name is used for representing a target compartment corresponding to the target equipment; the device domain name is used to represent the target device. The domain name at each level cannot exceed 15 characters, and is composed of numbers, letters, underlines "_" or "-".
It should be noted that, the above example of the domain name structure is only used as a specific example, and the structure of the domain name in the train communication method provided by the present invention is explained, in addition, other sorting manners may also be used, and the present invention is not limited to this.
The train communication method provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units through a train-level backbone network, a vehicle-level Ethernet and an internal Ethernet which are arranged in a train network. And associating the device domain name with the device dynamic IP address mapping, wherein the domain name comprises: the device domain name, the vehicle domain name and the marshalling domain name are combined with the train network coding method, maintenance personnel can quickly correspond the position of target equipment in a train marshalling to the domain name based on the domain name naming mode, the IP address of the target equipment can be quickly and accurately determined during communication through a domain name resolution technology, cross-unit maintenance of the equipment is achieved, the speed and the stability of train information transmission are improved, and the maintenance and diagnosis efficiency is improved.
Fig. 6 is a second flowchart of a train communication method provided by the present invention, and as shown in fig. 6, the present invention provides a train communication method implemented based on the train network, including:
step S601, a client sends a communication request to the ETBN exchanger so that the ETBN exchanger determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request;
step S602, receiving the dynamic IP address of the target device sent by the ETBN exchanger;
step S603, communicating with the target device based on the dynamic IP address of the target device.
Specifically, because the IP addresses of devices at the same position in different units are the same, the devices can only be connected to the unit in a fixed IP address access mode, and the devices of the whole train cannot be accessed. Causing difficulty in maintenance of the equipment.
In order to enable the Ethernet to have a control function and a single-point maintenance function, all Ethernet equipment of a whole train can be accessed through an Ethernet switch connected with any carriage, so that the equipment maintenance function is realized. The invention provides a train communication method, which comprises the following steps:
fig. 4 is a schematic diagram of a DNS protocol message format provided by the present invention, and as shown in fig. 4, in step S601, the client sends a communication request to the ETBN switch through the DNS protocol. The ETBN exchanger serves as a server, and after the ETBN exchanger receives a communication request sent by a client through a DNS protocol, the ETBN exchanger determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request.
It should be noted that one domain name corresponds to one IP address, and one IP address may correspond to a plurality of domain names. The domain name resolution protocol (DNS) maps host domain names and email addresses that are easy to remember to IP addresses that are easily recognized by computers. When the scheme is specifically applied, the structure setting and the resolution method of the domain name can be adjusted according to actual requirements, and the invention is not limited to this.
The ETBN exchanger calls a domain name resolution function, determines a dynamic IP address of the target equipment based on the acquired domain name of the target equipment, and sends the dynamic IP address of the target equipment to the client. In step S602, the client receives the dynamic IP address of the target device sent by the ETBN switch.
In step S603, the client communicates with the target device based on the received dynamic IP address of the target device.
It should be noted that the equipment maintenance is only used as a specific example of train network communication, and in addition, the train network also communicates based on different requirements, the train communication method provided by the present invention is widely applicable to a communication process requiring communication connection establishment based on an IP address, and can be adjusted based on actual conditions in actual applications, which is not limited by the present invention.
The train communication method provided by the invention realizes information transmission among units of the train and information transmission among carriages in the units through a train-level backbone network, a vehicle-level Ethernet and an internal Ethernet which are arranged in a train network. The ETBN exchanger is used as a server, a client sends a communication request to the ETBN exchanger through a DNS protocol, the ETBN exchanger determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request through a domain name resolution technology and sends the dynamic IP address to the client, and the client communicates with the target equipment based on the received dynamic IP address of the target equipment. The method can quickly and accurately determine the address of the target equipment during communication through the domain name resolution technology, realize cross-unit maintenance of the equipment, improve the speed and stability of train information transmission, realize train control information transmission, simultaneously perform functions of software upgrading, fault downloading, online monitoring and the like, and improve the efficiency of maintenance diagnosis.
The invention further provides a train, and the train is provided with the train network.
Specifically, the train provided by the invention is loaded with the train network. The train network includes: a train-level backbone network, an internal Ethernet network and a vehicle-level Ethernet network; the train-level backbone network comprises an ETBN exchanger configured by train subunits; the vehicle-level Ethernet comprises an ECNN switch configured by a carriage and equipment in the carriage; ETBN exchangers in the train-level backbone network are connected in a bus type topological structure; the ECNN switches in the vehicle-level Ethernet are connected in a ring topology structure, and the equipment is connected with the ECNN switches through Ethernet interfaces; all the equipment IP addresses in the subunits are different; IP addresses of devices with the same type and corresponding positions in different subunits are the same; the ETBN switch in the train-level backbone is connected to any one of the ECNN switches in the vehicle-level ethernet via an internal ethernet.
When equipment is maintained, the ETBN exchanger is used as a server, a client sends a communication request to the ETBN exchanger through a DNS protocol, the ETBN exchanger determines a dynamic IP address of target equipment based on a domain name of the target equipment in the communication request through a domain name resolution technology and sends the dynamic IP address to the client, and the client communicates with the target equipment based on the received dynamic IP address of the target equipment. The method can quickly and accurately determine the address of the target equipment during communication through the domain name resolution technology, realize cross-unit maintenance of the equipment, improve the speed and stability of train information transmission, realize train control information transmission, simultaneously perform functions of software upgrading, fault downloading, online monitoring and the like, and improve the efficiency of maintenance diagnosis.
The train network provided by the invention is loaded, and the information transmission among the units of the train and the information transmission among the carriages in the units are realized by arranging the train network of the train level backbone network, the vehicle level Ethernet and the internal Ethernet. Through the domain name resolution technology, the address of the target equipment can be rapidly and accurately determined during communication, cross-unit maintenance of the equipment is realized, the speed and stability of train information transmission are improved, and the maintenance and diagnosis efficiency is improved.
Fig. 7 is a schematic physical structure diagram of an electronic device provided in the present invention, and as shown in fig. 7, the electronic device may include: a processor (processor)710, a communication interface (communication interface)720, a memory (memory)730 and a communication bus (bus)740, wherein the processor 710, the communication interface 720 and the memory 730 communicate with each other via the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to perform the train communication method described above, including: the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name; determining a target device dynamic IP address based on the target device domain name; and sending the dynamic IP address of the target equipment to the client so that the client communicates with the target equipment based on the dynamic IP address.
In addition, the logic instructions in the memory 730 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
In another aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the train communication method provided by the above-mentioned method embodiments, including: the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name; determining a target device dynamic IP address based on the target device domain name; and sending the dynamic IP address of the target equipment to the client so that the client communicates with the target equipment based on the dynamic IP address.
In still another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the above-mentioned methods for train communication, including: the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name; determining a target device dynamic IP address based on the target device domain name; and sending the dynamic IP address of the target equipment to the client so that the client communicates with the target equipment based on the dynamic IP address.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A train network, comprising: a train-level backbone network, an internal Ethernet network and a vehicle-level Ethernet network;
the train-level backbone network comprises ETBN exchangers configured by train subunits, and the ETBN exchangers are connected in a bus type topological structure; the train sub-unit comprises a plurality of carriages in a train and a central control unit; each compartment comprises a plurality of devices;
the vehicle-level Ethernet comprises an ECNN switch of the carriage configuration and equipment in the carriage; the ECNN switches are connected in a ring topology structure, and the device is connected with the ECNN switches through Ethernet interfaces; the central control unit is connected with the ECNN switch;
the ETBN switch in the train-level backbone network is connected with any ECNN switch in the vehicle-level Ethernet through the internal Ethernet; wherein,
all the equipment IP addresses in the same subunit are different; the IP addresses of the devices with the same type and corresponding positions in different subunits are the same.
2. The train network of claim 1, further comprising: an Ethernet repeater;
the ETBN exchanger and the Ethernet repeater in the train-level backbone network are connected in a bus type topology structure.
3. The train network of claim 1, wherein the train-level ethernet networks are connected with a two-channel data link.
4. The train network of any one of claims 1-3, wherein the ETBN switch is configured to determine a target device dynamic IP address based on a target device domain name and send the target device dynamic IP address to a client.
5. A train communication method implemented based on the train network according to any one of claims 1 to 4, comprising:
the ETBN exchanger receives a communication request sent by a client; the communication request comprises a target device domain name;
determining a target device dynamic IP address based on the target device domain name;
and sending the dynamic IP address of the target equipment to the client so that the client communicates with the target equipment based on the dynamic IP address.
6. The train communication method according to claim 5,
the domain name includes: a device domain name, a vehicle domain name, and a group domain name;
the grouped domain name is used for representing a target subunit corresponding to the target equipment; the vehicle domain name is used for representing a target compartment corresponding to target equipment; the device domain name is used to represent a target device.
7. A train communication method implemented based on the train network according to any one of claims 1 to 4, comprising:
a client sends a communication request to the ETBN exchanger so that the ETBN exchanger determines a target equipment dynamic IP address based on a target equipment domain name in the communication request;
receiving a dynamic IP address of target equipment sent by the ETBN exchanger;
communicating with the target device based on the target device dynamic IP address.
8. A train, characterized in that it is loaded with a train network according to any one of claims 1-4.
9. An electronic device, comprising a memory and a processor, wherein the processor and the memory communicate with each other via a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to enable performance of the train communication method of claim 5 or 6, or the train communication method of claim 7.
10. A non-transitory computer-readable storage medium on which a computer program is stored, the computer program being characterized by implementing the train communication method according to claim 5 or 6, or the train communication method according to claim 7 when executed by a processor.
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