CN112040026A - Intelligent address allocation management device, system and method based on train Ethernet - Google Patents
Intelligent address allocation management device, system and method based on train Ethernet Download PDFInfo
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- CN112040026A CN112040026A CN202010948267.9A CN202010948267A CN112040026A CN 112040026 A CN112040026 A CN 112040026A CN 202010948267 A CN202010948267 A CN 202010948267A CN 112040026 A CN112040026 A CN 112040026A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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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
Abstract
The invention discloses an intelligent address allocation management device based on train Ethernet, a system and a method thereof, wherein the device comprises: the central processing unit determines the device number and the port number according to the actual scene and allocates IP address information for the direct connection terminal; the central processing unit is connected with the direct connection terminal through the interface unit, and acquires information required by the distribution of the direct connection terminal through the interface unit. The method comprises the following steps: each intelligent address allocation management device determines the device number of the carriage direction according to the port connection of the interface unit; the terminal requests a terminal address from the intelligent address allocation management device, the device determines the connection relation of the terminal and sends terminal address information containing the device number and port number information of the device in the direction of the carriage to the terminal; the terminal address information is bound according to the device number and the port number of the connection device. The invention integrates the exchange function and the intelligent address allocation management into a whole, and intelligently and automatically allocates addresses for a plurality of subsystem terminals of the train by planning and designing an IP address mapping rule through the device number and the connection port number.
Description
Technical Field
The invention relates to the technical field of train Ethernet communication, in particular to an intelligent address allocation management device, system and method based on train Ethernet.
Background
The IP address and subnet mask of a conventional train on-board terminal Device (ED) are set by the subsystem. With the increasing number of vehicle-mounted terminal devices, situations of communication failure, IP conflict or non-communication and the like often occur in field management and debugging, and part of the reasons are that the terminal devices allocate addresses, IP gateways and the like to network cards, and if the devices are more, the devices are related to each other, and network communication is easy to generate errors. The terminal devices are provided by a plurality of different manufacturers and are provided in a distributed manner, and are implemented according to own protocols, so that the problem of distribution can occur at a certain probability.
In actual debugging, the situation of allocation errors is often found, and when devices of the same type are replaced, uncertainty may be introduced by artificially allocating address information, and there is also a risk of errors. Even if a general Dynamic Host Configuration Protocol (DHCP) technology exists, there are many subsystems in a train consist, an address needs to be automatically and uniformly planned, and the workload is not enough by the traditional DHCP technology.
In the aspect of train communication, the existing address management mode is that respective address management (self-allocation of an IP address and a mask) is performed through each system terminal device, and the phenomenon of wrong allocation of the IP address and the subnet mask is often found during debugging, so that the debugging and troubleshooting progress of the device is influenced.
Disclosure of Invention
In view of the above technical problems, the present invention provides a management method and apparatus for planning in advance during allocation without performing configuration on site, which can reduce the workload of development and debugging personnel, improve the communication debugging efficiency, and facilitate the popularization of the scheme.
In order to solve the above technical problem, the present invention provides an intelligent address allocation management device based on train ethernet, which is characterized in that the device comprises:
the central processing unit determines the device number and the port number according to the actual scene and allocates IP address information for the direct connection terminal;
and the central processing unit is connected with the direct connection terminal through the interface unit, and acquires the information required by the distribution of the direct connection terminal through the interface unit.
Preferably, the invention further provides an intelligent address allocation management device based on train Ethernet, which is characterized in that,
the device further comprises a switching unit, and the central processing unit is communicated with an industrial Ethernet special M12 switching port which is included in the interface unit through the switching unit.
Preferably, the invention further provides an intelligent address allocation management device based on train ethernet, which is characterized in that the industrial ethernet dedicated M12 switching port comprises a plurality of ports.
Preferably, the present invention further provides an intelligent address allocation management device based on train ethernet, wherein the device further comprises:
and the storage unit is used for providing read, operated and stored data for the central processing unit.
The invention also discloses an intelligent address allocation management system, which comprises a plurality of intelligent address allocation management devices and a plurality of terminals, wherein the intelligent address allocation management devices are connected in pairs,
the intelligent address allocation management devices correspond to the terminals one by one;
the intelligent address allocation management device comprises a first link aggregation group and a second link aggregation group, wherein the first link aggregation group comprises at least one port used for being connected with the forward intelligent address allocation management device, and the second link aggregation group comprises at least one port used for being connected with the backward intelligent address allocation management device.
Preferably, the invention further discloses a method for intelligent address allocation management based on train ethernet, which is applied to the intelligent address allocation management system and is characterized in that the method comprises the following steps:
step one, each intelligent address allocation management device determines the device number of the carriage direction according to the port connection of the interface unit;
step two, the terminal requests a terminal address from the intelligent address allocation management device, the device determines the connection relation of the terminal and sends the terminal address information containing the device number and the port number information of the device in the direction of the carriage to the terminal;
and step three, the terminal address information is bound according to the device number and the port number of the connected device.
Preferably, the invention further discloses a method for intelligent address allocation management based on train ethernet, which is characterized in that the second step further comprises:
step 21, the intelligent address allocation management device monitors whether port links other than the first and second link aggregation groups in the interface unit are in a connected state, and detects an "address discovery packet" broadcast by the terminal on the link;
step 22, after the intelligent address allocation management device detects the "address discovery message", replying information including the device number and the port number to the terminal, and determining that the terminal is a direct connection device according to the received first intelligent address allocation management device;
step 23, the terminal replies an address response message to the direct connection device and requests IP address information from the direct connection device;
step 24, after receiving the address request message, the direct connection device checks and determines whether the address of the intelligent address allocation management device is the address of the direct connection device?
If the address of the intelligent address allocation management device is judged to be the address of the intelligent address allocation management device, sending address confirmation information containing the IP address information provided before to the terminal to inform the terminal that the terminal is authorized to use the address, and the lease period of the allocated address is not aged;
if the terminal is judged not to be the self address, the allocated address is recovered, and the terminal directly connected with the allocated address is waited to send an address resource request.
Preferably, the invention further discloses a method for intelligent address allocation management based on train ethernet, which is characterized in that the first step further comprises:
and step 12, if the first link aggregation group is judged to have link connection, the intelligent address allocation management device is not in the head position, and then the device number of each device is obtained according to the connection link between the intelligent address allocation management devices.
Preferably, the invention further discloses a method for intelligent address allocation management based on train ethernet, which is characterized in that the third step further comprises:
and the terminal binds the TCP/IP protocol with the allocated IP address, the subnet mask and the gateway information.
Preferably, the invention further discloses a method for intelligent address allocation management based on train ethernet, which is characterized in that the IP address information allocated by the terminal comprises the device number and the port number of the direct connection device.
Preferably, the present invention further discloses a method for intelligent address allocation management based on train ethernet, wherein the first and second link aggregation groups each include two ports.
Compared with the prior art, the invention has the following advantages: according to the application scene of the train, based on the Ethernet technology, a design implementation method of the intelligent address management and distribution device is provided, the exchange function and the intelligent address distribution management are integrated, and the IP address mapping rule is planned and designed through the device number and the connection port number, so that the addresses are intelligently and automatically distributed to the terminals of a plurality of subsystems of the train.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the principle of the invention. In the drawings:
FIG. 1 is a block diagram of the components of the intelligent address assignment management device of the present invention;
FIG. 2 is a schematic diagram of the apparatus of FIG. 1 constituting a first embodiment of a system;
FIG. 3 is a flow chart of a method for implementing intelligent address allocation management using the system of FIG. 2;
fig. 4 is a schematic view of a second embodiment of the present invention.
Reference numerals
10-intelligent address assignment management device
11-central processing unit
12-exchange unit
13-interface unit
14-power supply unit
15-memory cell
20-terminal ED
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations are added to or removed from these processes.
Referring to fig. 1, a block diagram of an intelligent address allocation management device according to the present invention is shown.
The device 10 comprises five major parts, a central processing unit 11, a switching unit 12, an interface unit 13, a power supply unit 14 and a storage unit 15.
The central processing unit 11 is mainly composed of a CPU processing chip, is the most core part of the apparatus 10, and is used for performing determination processing on data information, including but not limited to determining an apparatus number, determining a port number, intelligently allocating IP address information to a terminal device according to a mapping relationship, and the like. In order to facilitate debugging and monitoring of the device, a serial port 131 and a network port 132 for debugging are led out.
The switching unit 12 is used to implement network data switching and two-layer forwarding functions, and may perform traffic monitoring management, address learning, and the like, and is mainly used to complete data link layer functions. The device is connected with the special M12 switching port of the industrial Ethernet through the switching chip, so that the connection of terminal equipment and the function expansion of the device are facilitated.
The interface unit 13 is widely covered, and comprises a debugging serial port 131 which is led out and connected by the central processing unit 11 and is used for debugging, accessing and the like to the device; there is also an M12 interface 133 connected to the switching unit 12 for connecting the terminal ED20 to implement data exchange and device communication.
The power supply unit 14 is used for converting the train-mounted direct current 110V power supply into a 5V voltage which is commonly used by the central processing unit 11, the switching unit 12 and the storage unit 15 through a single board, so as to realize the power supply function of the device.
The storage unit 15 provides data reading, running, and storing functions by a random access RAM for running programs and a ROM for storing information read-only memory.
The intelligent address allocation management apparatus (hereinafter, referred to as the present apparatus) of the present invention has both the switch and the intelligent address allocation management function, and is called an intelligent address allocation management apparatus in order to highlight the address allocation management function. In the scheme of the invention, the intelligent address allocation management function of the connection terminal equipment is finally realized by adopting a mode of combining the device number and the port number.
Example 1
Fig. 2 shows a preferred embodiment of address allocation by the intelligent address allocation management system for explaining the construction of the apparatus of the present invention.
The system of the embodiment comprises 1-4 carriages which form a marshalling, and the intelligent address allocation is not in a network topology, so that only the linear connection among the devices is taken as an example. For the sake of brevity, the number of terminal devices is not too large, and the working principle and process of the device and the method are discussed heavily.
Each carriage is provided with 1 intelligent address allocation management device which is respectively numbered 1, 2, 3 and 4. The 1 port of the intelligent address allocation management apparatus 1 is connected to the terminal device ED1, the 5 port of the intelligent address allocation management apparatus 2 is connected to the ED20, the 11 port of the intelligent address allocation management apparatus 3 is connected to the ED3, and the 12 port of the intelligent address allocation management apparatus 4 is connected to the ED 4.
Since the industrial M12 interface adopted in this embodiment is 18 ports in total, the ports 1 to 18 are allocated in advance in the present apparatus, that is, the mapping relationship between the apparatus port number and the allocation of the IP address and subnet mask of the connection device is as follows:
TABLE 1 mapping relationship
In the preferred embodiment, ports 15-18 are used as the ports for interconnection between two devices, while the remaining ports 1-14 are used as the connecting devices.
It should be noted that, in the preferred embodiment, two sets of ports are used as the ingress port or the egress port, which is based on the consideration of redundancy and reliability, it is fully possible to use only one set of ports, that is, 17 to 18 ports as the inter-device connection ports, and the remaining 1 to 16 ports as the connection devices.
In a specific application, the invention also provides a method for determining the number of the device, which comprises the following steps:
in the device connection ports, 15 and 16 ports are divided into a first link aggregation group, and the first link aggregation group is marked as a device direction 1; 17. the 18 ports are divided into a second link aggregation group, denoted as device direction 2.
When the devices are connected in pairs, the devices are connected with the adjacent vehicle devices in sequence in a 17-15 mode and a 18-16 mode from the head vehicle. In this way, the ports 15, 16 of the head car device are left empty and not connected, i.e. no link connection is detected by the device direction 1. Thus, device number 1 is determined, followed by other device numbers 2, 3, 4 within the consist in a sequential connection. With the device number and the port number, the mapping relation of the IP address can be determined.
In the scenario of fig. 2, the IP of the terminal ED1 is assigned to be 10.0.1.1, the IP of the terminal ED2 is assigned to be 10.0.2.5, the IP of the terminal ED3 is assigned to be 10.0.3.11, and the IP of the terminal ED4 is assigned to be 10.0.4.12, so that the subnet mask and the gateway can be configured in a unified management manner or in a differentiated management manner.
With reference to the embodiment shown in fig. 2, the following describes in detail the method of the intelligent address allocation management system for controlling the intelligent address allocation management, and the following steps are followed:
step 1, powering on a train, and powering on devices 1-4 corresponding to carriages 1-4;
the foregoing steps 1 to 4 are intended to implement the determination of the direction order and port number of each device number, and may also be performed by other methods.
here, the ED terminal assigns the management device with the first intelligent address received (direct connection device responds fastest).
According to the mapping relationship set in table 1, the terminal ED1 is connected to port 1 of the device 10 and has an assigned IP address of 10.0.1.1; the terminal ED20 is connected at the 5 port of the device 2 and is assigned an IP address of 10.0.2.5; the terminal ED3 is connected at the 11 port of the device 3 and is assigned an IP address of 10.0.3.11; the terminal ED4 is connected to the 12 port of the device 4 and is assigned an IP address 10.0.4.12. The subnet mask of the terminal device can be uniformly configured to be 255.255.0.0, and the gateway can be uniformly configured to be 10.0.0.1 (which can be adaptively adjusted according to the actual application scenario).
and step 12, ending the whole address allocation process.
In summary, the apparatus of the present invention detects whether there is an address discovery message (intended to search for a server for address allocation) sent by the terminal ED in the link; the first step of the terminal determining the address is to find the address, and the terminal running the DHCP issues an address discovery message and sends the message in a broadcast manner to find the intelligent address allocation management device.
Example 2
The system of the embodiment is composed of two marshalling of 8 cars, namely, an identical marshalling is added on the basis of the embodiment 1, as shown in figure 4.
In the intelligent address assignment for the second group, exactly the same way as for the first one is used. This embodiment 2 is similar to embodiment 1, the newly added 5, 6, 7, 8 cars are another group, the device numbers of the devices of the equal 4, 3, 2, 1 cars respectively, that is, the device numbers distributed in the 8, 7, 6, 5 cars are 1, 2, 3, 4 respectively, and the intelligent address allocation process is similar to embodiment 1. It should be noted that the IP addresses of the terminal devices in different groups may be the same, and address translation and three-layer forwarding are performed between the groups through a three-layer switch.
The innovation points of the invention are as follows: according to the application scene of the train, based on the Ethernet technology, a design implementation method of an intelligent address management distribution device is provided, the switching function and the intelligent address distribution management are integrated, an IP address mapping rule is planned and designed through a device number and a connecting port number, the intelligent automatic address distribution is carried out on a plurality of subsystem terminals of the train, terminal equipment connected with a certain port is replaced in the day or at the end of a lease period, the intelligent distribution of the same address can be achieved, the operation is simple and convenient, and the maintenance is easy.
The invention has the beneficial effects that: by means of unified planning and intelligent management and distribution of the address information, the problem of non-standardization possibly introduced by respective address resource management (self-distributing IP addresses, masks and gateways) of the subsystem equipment can be solved, and therefore train debugging progress is promoted, troubleshooting efficiency is improved, and workload of development and debugging personnel is reduced. Moreover, the scheme is convenient and quick and is beneficial to popularization.
The intelligent address allocation device comprises the device number and the port number information which are allocated to the IP address information in advance, so that the IP information comprises the device number information in the carriage direction, the binding of the device number and the vehicle number is realized, and the problem that many traditional addresses are allocated with a term and are subjected to address allocation errors once the addresses are expired is solved.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. The processor may be one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), digital signal processing devices (DAPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or a combination thereof. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips … …), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD) … …), smart cards, and flash memory devices (e.g., card, stick, key drive … …).
The computer readable medium may comprise a propagated data signal with the computer program code embodied therein, for example, on a baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, and the like, or any suitable combination. The computer readable medium can be any computer readable medium that can communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or device. Program code on a computer readable medium may be propagated over any suitable medium, including radio, electrical cable, fiber optic cable, radio frequency signals, or the like, or any combination of the preceding.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.
Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.
Claims (11)
1. Intelligent address allocation management device based on train Ethernet, characterized in that, the device includes:
the central processing unit determines the device number and the port number according to the actual scene and allocates IP address information for the direct connection terminal;
and the central processing unit is connected with the direct connection terminal through the interface unit, and acquires the information required by the distribution of the direct connection terminal through the interface unit.
2. The Ethernet over train intelligent address assignment management device of claim 1,
the device further comprises a switching unit, and the central processing unit is communicated with an industrial Ethernet special M12 switching port which is included in the interface unit through the switching unit.
3. The Ethernet over train intelligent address assignment management device of claim 2,
the industrial ethernet specific M12 switch port includes a number of ports.
4. The intelligent train ethernet-based address assignment management device according to claim 3, further comprising:
and the storage unit is used for providing read, operated and stored data for the central processing unit.
5. An intelligent address allocation management system comprising a plurality of intelligent address allocation management devices according to any one of claims 1 to 4 and a plurality of terminals, the intelligent address allocation management devices being connected in pairs,
the intelligent address allocation management devices correspond to the terminals one by one;
the intelligent address allocation management device comprises a first link aggregation group and a second link aggregation group, wherein the first link aggregation group comprises at least one port used for being connected with the forward intelligent address allocation management device, and the second link aggregation group comprises at least one port used for being connected with the backward intelligent address allocation management device.
6. A method for intelligent address allocation management based on train ethernet, which applies the intelligent address allocation management system of claim 5, the method comprising:
step one, each intelligent address allocation management device determines the device number of the carriage direction according to the port connection of the interface unit;
step two, the terminal requests a terminal address from the intelligent address allocation management device, the device determines the connection relation of the terminal and sends the terminal address information containing the device number and the port number information of the device in the direction of the carriage to the terminal;
and step three, the terminal address information is bound according to the device number and the port number of the connected device.
7. The method for intelligent address allocation management based on train ethernet according to claim 6, wherein said step two further comprises:
step 21, the intelligent address allocation management device monitors whether port links other than the first and second link aggregation groups in the interface unit are in a connected state, and detects an "address discovery packet" broadcast by the terminal on the link;
step 22, after the intelligent address allocation management device detects the "address discovery message", replying information including the device number and the port number to the terminal, and determining that the terminal is a direct connection device according to the received first intelligent address allocation management device;
step 23, the terminal replies an address response message to the direct connection device and requests IP address information from the direct connection device;
step 24, after receiving the address request message, the direct connection device checks and determines whether the address of the intelligent address allocation management device is the address of the direct connection device,
if the address of the intelligent address allocation management device is judged to be the address of the intelligent address allocation management device, sending address confirmation information containing the IP address information provided before to the terminal to inform the terminal that the terminal is authorized to use the address, and the lease period of the allocated address is not aged;
if the terminal is judged not to be the self address, the allocated address is recovered, and the terminal directly connected with the allocated address is waited to send an address resource request.
8. The method for train ethernet based intelligent address assignment management of claim 7, wherein said step one further comprises:
step 11, powering on an intelligent address allocation device corresponding to each carriage, detecting a port condition in the direction of the intelligent address allocation device, and judging the arrangement position of the intelligent address allocation device according to whether the first link aggregation group has link connection;
and step 12, if the first link aggregation group is judged to have link connection, the intelligent address allocation management device is not in the head position, and then the device number of each device is obtained according to the connection link between the intelligent address allocation management devices.
9. The method for train ethernet based intelligent address assignment management of claim 8, wherein said step three further comprises:
and the terminal binds the TCP/IP protocol with the allocated IP address, the subnet mask and the gateway information.
10. The method for intelligent train Ethernet-based address assignment management according to claim 9,
and the IP address information distributed by the terminal comprises the device number and the port number of the direct connection device.
11. The method for intelligent train Ethernet-based address assignment management according to claim 10,
the first and second link aggregation groups each include two ports.
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| CN202010948267.9A CN112040026A (en) | 2020-09-10 | 2020-09-10 | Intelligent address allocation management device, system and method based on train Ethernet |
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| CN202010948267.9A CN112040026A (en) | 2020-09-10 | 2020-09-10 | Intelligent address allocation management device, system and method based on train Ethernet |
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| CN202010948267.9A Pending CN112040026A (en) | 2020-09-10 | 2020-09-10 | Intelligent address allocation management device, system and method based on train Ethernet |
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