CN108337114A - Network state processing equipment, method and train - Google Patents
Network state processing equipment, method and train Download PDFInfo
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- CN108337114A CN108337114A CN201810040708.8A CN201810040708A CN108337114A CN 108337114 A CN108337114 A CN 108337114A CN 201810040708 A CN201810040708 A CN 201810040708A CN 108337114 A CN108337114 A CN 108337114A
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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
- H04L41/14—Network analysis or design
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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
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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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
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
-
- 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
- H04L41/14—Network analysis or design
- H04L41/147—Network analysis or design for predicting network behaviour
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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- Environmental & Geological Engineering (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a kind of network state processing equipment, method and trains.Wherein, which includes：To the collector that the train network signal of communication of the network port on train is acquired, and, according to the train network signal of communication that the collector acquires, the abort situation of the train is predicted and obtains the processor of prediction result.The present invention solves the technical issues of train network monitoring and diagnostic system can not predict network incipient fault in the related technology.
Description
Technical field
The present invention relates to train communication fields, in particular to a kind of network state processing equipment, method and train.
Background technology
Train communication system TCN (Train Communication Network) be trains distributing formula control system it
On grow up Train Control, diagnostic message data communication network, assume responsibility for the exhausted big of Train Control and operation safety monitoring
Part works, and the health status of its own is directly related to the reliability of train.The fault diagnosis of TCN and maintenance are complicated
System engineering, and current train network monitoring and diagnostic system have hysteresis quality, are reported mainly for the failure having occurred and that
Alert and processing, and for the prediction of potential problems still without effective method.
For above-mentioned problem, currently no effective solution has been proposed.
Invention content
An embodiment of the present invention provides a kind of network state processing equipment, method and trains, at least to solve the relevant technologies
The technical issues of middle train network monitoring and diagnostic system can not predict network incipient fault.
One side according to the ... of the embodiment of the present invention provides a kind of network state processing equipment, including：To on train
The collector that the train network signal of communication of the network port is acquired；The train network according to collector acquisition is logical
Believe signal, the abort situation of the train is predicted and obtains the processor of prediction result.
Optionally, the equipment further includes：By the port numbers of the network port, in the corresponding institute of the port numbers
The signal of communication obtained on the network port is stated to be filtered to obtain the filter of the train network signal of communication.
Optionally, the equipment further includes：The train network signal of communication of collector acquisition is cached
Buffer.
Optionally, the equipment is additionally provided with carries out unloading to the train network signal of communication of the buffer
USB interface.
Optionally, the equipment further includes having the Ethernet output interface for exporting the prediction result.
Optionally, the equipment is provided with according to the network topology of the rain model and the train to the train
The program development interface that abort situation is positioned.
Optionally, the equipment further includes：The pre- of early warning processing is carried out to the abort situation included by the prediction result
Alert device.
Optionally, the processor is additionally operable to when the network port to the train determines whether to occur abnormal, according to
Exception occur is determined whether at least two-way train network signal of communication of the network port, whether determines the network port
There is abnormal prediction result.
Optionally, the equipment is mounted on the double-unit traction controller of train traction unit.
Another aspect according to the ... of the embodiment of the present invention, additionally provides a kind of train, including described in any of the above-described it is network-like
State processing equipment.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of network state processing method, including：To on train
The train network signal of communication of the network port be acquired；According to the train network signal of communication of acquisition, to the row
The abort situation of vehicle is predicted and obtains prediction result.
In embodiments of the present invention, by the way of being acquired processing to train network signal of communication, by network-like
The collector that the train network signal of communication of the network port on train is acquired in state processing equipment, and, according to described
The train network signal of communication of collector acquisition, predicts the abort situation of the train and obtains prediction result
Processor achieved the purpose that predict train fault and can confirm that abort situation by the network state processing equipment,
To realize the technique effect for improving train security reliability, and then solve train network monitoring and diagnosis in the related technology
The technical issues of system can not predict network incipient fault.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 2 is the preferred structure schematic diagram one of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 3 is the preferred structure schematic diagram two of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 4 is the preferred structure schematic diagram three of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 5 is the preferred structure schematic diagram four of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 6 is the preferred structure schematic diagram five of network state processing equipment according to the ... of the embodiment of the present invention；
Fig. 7 is the train network system health monitoring and fault pre-alarming network topology knot according to the preferred embodiment of the invention
Composition；
Fig. 8 is a kind of train network system health monitoring and fault pre-alarming equipment according to the preferred embodiment of the invention
Structure diagram；
Fig. 9 is the flow chart of network state processing method according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
It includes to be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment to cover non-exclusive
Those of clearly list step or unit, but may include not listing clearly or for these processes, method, product
Or the other steps or unit that equipment is intrinsic.
According to embodiments of the present invention, a kind of equipment of network state processing is provided.Fig. 1 is according to the ... of the embodiment of the present invention
The structural schematic diagram of network state processing equipment, as shown in Figure 1, the equipment includes：Collector 12, processor 14.Below to this
Network state processing equipment illustrates.
Collector 12 is acquired for the train network signal of communication to the network port on train；
Processor 14 is connected to above-mentioned collector 12, the train network signal of communication for being acquired according to collector, to row
The abort situation of vehicle is predicted and obtains prediction result.
In embodiments of the present invention, by the way of being acquired processing to train network signal of communication, by network-like
The collector that the train network signal of communication of the network port on train is acquired in state processing equipment, and, according to acquisition
The train network signal of communication of device acquisition, predicts the abort situation of train and is obtained the processor of prediction result, reached
It is predicted train fault and be can confirm that the purpose of abort situation by the network state processing equipment, carried to realize
The technique effect of high train security reliability, so solve in the related technology train network monitoring and diagnostic system can not be to net
The technical issues of network incipient fault is predicted.Network state processing equipment through the embodiment of the present invention, realizes to train
Network state be monitored, achieve the effect that be issued by early warning before the failure occurs, go out in failure relative to the relevant technologies
The drawbacks of could being handled failure after now, this method have not only ensured the security reliability of train network, but also effectively
Improve train operation efficiency.
To improve treatment effeciency, it is preferred that the network state processing equipment can also include：Pass through the port of the network port
Number, the signal of communication obtained on the corresponding network port of port numbers is filtered to obtain the filtering of train network signal of communication
Device.The signal obtained on port is filtered to above-mentioned by filter, in the case where guaranteeing to embody signal quality,
Avoid to whole signals analyzed caused by the low problem of analyzing processing efficiency.By after filtering just for obtained train
The mode that network communication signal is handled, further improves diagnosis efficiency.Fig. 2 is according to the ... of the embodiment of the present invention network-like
The preferred structure schematic diagram one of state processing equipment, as shown in Fig. 2, further including in addition to containing all structures of Fig. 1 in the equipment：Filtering
Device 22 is connected to above-mentioned collector 12 and processor 14, wherein the function of filter 22 is specifically as above, and details are not described herein.
For ease of being inquired gathered data and being assessed, it is preferred that the network state processing equipment can also include：It is right
The buffer that the train network signal of communication of collector acquisition is cached.To improve equipment application convenience and compatibility, if
It is standby to be also provided with the USB interface that unloading is carried out to the train network signal of communication of buffer.Fig. 3 is according to the present invention
The preferred structure schematic diagram two of the network state processing equipment of embodiment, as shown in figure 3, removing all structures containing Fig. 1 in the equipment
Outside, further include：Buffer 32, USB interface 34 are connected to above-mentioned collector 12.It can be realized acquisition by buffer 32
Network communication signal is used for example, being used as notice, is used with being for data processing as other purposes, used as layout of roads etc., and lead to
Automatic download unloading of the above-mentioned USB interface to signal in caching is crossed, the signal of the multifunctional application and caching of realizing the equipment is more
Mode application can be also used for for example, not only using the network communication signal of caching ON TRAINS on other non-trains
Purposes.
Visualization for prediction result and apply facilitation, it is preferred that the network state processing equipment can also include
There is the Ethernet output interface of output prediction result.Pass through above-mentioned Ethernet output interface, the prediction of network state processing equipment
As a result it can externally export and give train operator room display interface, such as vehicle-mounted man-machine interface HMI (Human Machine
Interface) display, or export to vehicle mounted failure prognostics and health management system PHM (Prognostic and
Health Management), device diagnostic data and diagnostic result can also be inquired by upper computer software.It is above-mentioned
The processing that prediction result is exported so that train monitoring personnel can dynamically know prediction result, and then convenient for timely locating
Manage the failure being likely to occur.Fig. 4 is the preferred structure schematic diagram three of network state processing equipment according to the ... of the embodiment of the present invention, such as
Shown in Fig. 4, in the equipment in addition to containing all structures of Fig. 1, further include：Ethernet output interface 42 is connected to above-mentioned processor 14,
Wherein, the function of Ethernet output interface 42 is specifically as above, and details are not described herein.
Train communication network is respectively had any different caused by train model and function difference, therefore preferred, at the network state
Reason equipment can be provided with the program positioned to the abort situation of train according to the network topology of rain model and train and open
Send out interface.By the program development interface, make that user passes through relevant configuration and function call can be thus achieved for specific vehicle
The functional development of type and network topology structure, have preferable versatility and can expansion capability, be furthermore achieved using compatibility
The strong technique effect of property.Fig. 5 is the preferred structure schematic diagram four of network state processing equipment according to the ... of the embodiment of the present invention, is such as schemed
Shown in 5, in the equipment in addition to containing all structures of Fig. 1, further include：Program development interface 52, it should be noted that the program development
Interface can be different according to the difference of the program of specific choice, for example, different development languages may correspond to different programs
Development interface needs easily to adopt because the network topology of different rain models and train may be different according to specific requirement
It is developed with different programs.
Preferably, which can also include：Abort situation included by prediction result is carried out pre-
The precaution device of alert processing.The precaution device can break down when alert, optionally, above-mentioned warning message can pass through
The form of train operator room display interface, the form or auditory tone cues that send out duration light or anchor icon flicker carries out in advance
Alert prompt, can also connect network, train control platform or concrete operations personnel are sent in the form of the network information or short message
Communicating terminal, and then to user carry out early warning.Fig. 6 is the excellent of network state processing equipment according to the ... of the embodiment of the present invention
Structural schematic diagram five is selected, as shown in fig. 6, further including in addition to containing all structures of Fig. 1 in the equipment：Precaution device 62 is connected to above-mentioned
Processor 14, wherein the function of precaution device 62 is specifically as above.
To avoid single channel from acquiring and handling the case where there are random errors, it is preferred that processor 14 can be also used for
When determining whether to occur abnormal to the network port of train, sentenced according at least two-way train network signal of communication to the network port
It is fixed whether exception occur, determine whether the network port abnormal prediction result occurs.Sentenced according to the above-mentioned signal at least two-way
It is disconnected, effectively avoid the random error in single channel acquisition and processing.
Preferably, which can be mounted on the double-unit traction controller of train traction unit
(Multifunction Vehicle Bus).By being mounted on MVB networks, the processing of any of the above-described network state can be made to set
It is standby that on-line monitoring and early warning are carried out to the health status of network system during train operation.
According to embodiments of the present invention, a kind of train is additionally provided, wherein the train may include the network of any of the above-described
State processing equipment.According to above-mentioned network state processing equipment, which can be to vehicle netbios in train travelling process
Health status assessed, predictive analysis is carried out to incipient fault, and then improve the security reliability of train.While because
The network state processing equipment can also provide state instruction and general Ethernet output interface, and prediction result is allow to lead to
The man-machine interface display HMI for crossing In-vehicle networking subsystem shows early warning, can also be output to vehicle mounted failure prediction and be managed with health
It is managed, and then realizes efficient, convenient, quick during train operation to the health of network system in reason system PHM
State carries out on-line monitoring and early warning.Simultaneously because program development interface can be provided, train user is made to pass through relevant configuration and letter
Number calls the functional development that can be thus achieved for specific network topology structure, is furthermore achieved using the strong technology of compatibility
Effect enhances the security reliability and multifunctionality of train operation.
Based on above-described embodiment and preferred embodiment, in a preferred embodiment of the invention, a kind of train net is additionally provided
Network system health monitors and fault pre-alarming equipment, the equipment can be mounted on double-unit traction controller, and Fig. 7 is according to this hair
The train network system health monitoring of bright preferred embodiment and fault pre-alarming network topology structure figure, as shown in fig. 7, MVB nets
Each traction unit installs an above equipment in network.The equipment is mounted on MVB networks, and is connected to full-vehicle control unit VCU
(Vehicle Control Unit), can during train operation to the health status of network system carry out on-line monitoring and
Early warning.
Fig. 8 is a kind of train network system health monitoring and fault pre-alarming equipment according to the preferred embodiment of the invention
Structure diagram, as shown in figure 8, mainly containing the following steps when the equipment is run：
(1) port capture and waveform acquisition：The equipment has port capture and waveform acquisition ability, according to specific vehicle
Network topology structure and port setting have configured port polling periodic table in advance, carry out signal capture to the network port, and will adopt
The waveform deposit equipment caching collected；Simultaneously the equipment can also by general USB interface to the port waveform in caching into
Row is automatic to download unloading；
(2) A, B the road port data captured are decoded and waveform analysis, the wrong frame of progress counts, and to the port
The distortion degree of waveform is assessed, including the analysis of time domain and frequency domain and the comparative analysis etc. on the road A, B；
(3) port status information obtained in the previous step is stored, and then obtains the status data of whole network port；
(4) the port status data of TCN networks are analyzed in conjunction with network topology structure, to train network control system
In incipient fault that may be present predicted and positioned；
(5) analysis prediction result is output to vehicle-mounted man-machine interface display HMI or vehicle mounted failure by Ethernet interface
Prognostics and health management system PHM.
It is arranged by above-mentioned operation, the train network system health monitoring and fault pre-alarming in the preferred embodiment of the present invention are set
It is standby that following functions may be implemented：
(1) equipment is inquired and is assessed by the physical layer communication state to each port, and stores diagnosis knot
Fruit can provide the original waveform of bottom diagnostic message and problem data frame for train network system diagnosis engineering teacher, contribute to
Improve diagnosis efficiency and analyzing failure cause；
(2) equipment can provide general Ethernet output interface, and diagnostic result can externally be exported to train operator
Room display interface, or export to vehicle-mounted PHM systems, it can also be by upper computer software to device diagnostic data and diagnostic result
It is inquired；
(3) equipment can provide application and development interface, and specific vehicle and network topology can be directed to by the interface
Corresponding application program is developed, there is preferable versatility and can expansion capability.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of embodiment of the method for network state processing, needs
Illustrate, step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It executes, although also, logical order is shown in flow charts, and it in some cases, can be with suitable different from herein
Sequence executes shown or described step.
Fig. 9 is the flow chart of network state processing method according to the ... of the embodiment of the present invention, as shown in figure 9, this method includes
Following steps：
Step S902 is acquired the train network signal of communication of the network port on train；
Step S904 predicts the abort situation of train and is obtained pre- according to the train network signal of communication of acquisition
Survey result.
In embodiments of the present invention, by the way of being acquired processing to train network signal of communication, by train
On the train network signal of communication of the network port be acquired, and, according to train network signal of communication to the fault bit of train
It sets and is predicted and obtained prediction result, achieved the purpose that predict train fault and can confirm that abort situation, to
The technique effect for improving train security reliability is realized, and then solves train network monitoring and diagnostic system in the related technology
The technical issues of network incipient fault can not being predicted.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of storage medium, which includes storage
Program, wherein equipment executes above-mentioned network state processing method where controlling storage medium when program is run.
Another aspect according to the ... of the embodiment of the present invention additionally provides a kind of processor, which is used to run program,
In, program executes above-mentioned network state processing method when running.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, for example, the unit division, Ke Yiwei
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
On unit.Some or all of unit therein can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part or the technical solution that contribute in other words to the relevant technologies can be in the form of software products
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of network state processing equipment, which is characterized in that including：
The collector that the train network signal of communication of the network port on train is acquired；
According to the train network signal of communication that the collector acquires, the abort situation of the train is predicted and obtained
To the processor of prediction result.
2. equipment according to claim 1, which is characterized in that the equipment further includes：Pass through the end of the network port
Slogan is filtered to obtain the train network to the signal of communication obtained on the corresponding network port of the port numbers
The filter of signal of communication.
3. equipment according to claim 1, which is characterized in that the equipment further includes：To the institute of collector acquisition
State the buffer that train network signal of communication is cached.
4. equipment according to claim 3, which is characterized in that the equipment is additionally provided with the institute to the buffer
State the USB interface that train network signal of communication carries out unloading.
5. equipment according to claim 1, which is characterized in that the equipment further include have the output prediction result with
Too net output interface.
6. equipment according to claim 1, which is characterized in that the equipment is provided with according to the rain model and described
The program development interface that the network topology of train positions the abort situation of the train.
7. equipment according to claim 1, which is characterized in that the equipment further includes：Included by the prediction result
Abort situation carry out early warning processing precaution device.
8. equipment according to claim 1, which is characterized in that the processor is additionally operable in the network to the train
When port determines whether to occur abnormal, determine whether according at least two-way train network signal of communication to the network port
It is now abnormal, determine whether the network port abnormal prediction result occurs.
9. equipment according to any one of claim 1 to 8, which is characterized in that the equipment is mounted on train traction list
The double-unit traction controller of member.
10. a kind of train, which is characterized in that including any one of claim 1 to 9 network state processing equipment.
11. a kind of network state processing method, which is characterized in that including：
The train network signal of communication of the network port on train is acquired；
According to the train network signal of communication of acquisition, the abort situation of the train is predicted and obtains prediction knot
Fruit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040708.8A CN108337114A (en) | 2018-01-16 | 2018-01-16 | Network state processing equipment, method and train |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040708.8A CN108337114A (en) | 2018-01-16 | 2018-01-16 | Network state processing equipment, method and train |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719197A (en) * | 2019-09-29 | 2020-01-21 | 中车青岛四方机车车辆股份有限公司 | Train-mounted Ethernet state prediction method and device |
| CN111824210A (en) * | 2020-07-14 | 2020-10-27 | 中车大连电力牵引研发中心有限公司 | Vehicle-mounted PHM data detection and processing system based on rail transit |
| CN112130029A (en) * | 2020-10-10 | 2020-12-25 | 中车青岛四方机车车辆股份有限公司 | Train network fault detection tool and detection method |
| CN112751720A (en) * | 2019-10-31 | 2021-05-04 | 中车株洲电力机车研究所有限公司 | Train backbone network system, fault detection method and storage medium |
| CN114338454A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | Network communication quality detection method, system, train display screen and storage medium |
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