CN107276845A - A kind of real time data dispatching method with fault tolerance of field of track traffic - Google Patents
A kind of real time data dispatching method with fault tolerance of field of track traffic Download PDFInfo
- Publication number
- CN107276845A CN107276845A CN201710417001.XA CN201710417001A CN107276845A CN 107276845 A CN107276845 A CN 107276845A CN 201710417001 A CN201710417001 A CN 201710417001A CN 107276845 A CN107276845 A CN 107276845A
- Authority
- CN
- China
- Prior art keywords
- data
- real
- real time
- fault tolerance
- fault
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0736—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function
- G06F11/0739—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function in a data processing system embedded in automotive or aircraft systems
-
- 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
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/112—Switch control, e.g. arbitration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/40—Constructional details, e.g. power supply, mechanical construction or backplane
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/557—Error correction, e.g. fault recovery or fault tolerance
Abstract
The invention provides a kind of real time data dispatching method with fault tolerance of field of track traffic, it is characterised in that：It is characterized in that comprising the following steps：Step 1, the real-time ethernet switch system with fault tolerance is initialized；Step 2, monitoring exchange fault；Step 3, response exchange fault, when CPU board detects exchange fault around, CPU sends the instruction for opening fault tolerance to power board, so as to open the fault tolerance of connecting fault switch ports themselves；Step 4, judge whether arbitration modules are opened according to the fault tolerance of each port；Step 5, when reach packet reception window when, control logic module is according to stream identification field, determine the address space of the packet, the present invention can effectively prevent from doing sth. in advance to reach next interchanger by the real time data of the failed switches originally, so as to cause the corresponding reception time window of data to mismatch, and then the problem of cause Network Packet Loss.
Description
Technical field
The present invention relates to a kind of real time data dispatching method based on ethernet technology of field of track traffic, more particularly to
A kind of real time data dispatching method with fault-tolerant ability of field of track traffic.
Background technology
EPA refers to the related elements that Ethernet is applied in the Automated condtrol of industrial environment and programme-control
And technology, provide certainty and real-time for industrial network.EPA is compatible with the standards of IEEE 802.3, and with logical
Letter speed is fast, be widely used, develop and production cost is low, the characteristics of be easily integrated, be widely used in aviation, railway traffic,
The fields such as industry manufacture.
Real-time ethernet interchanger is the skeleton of the Real Time Communication Network based on Ethernet, its mutually interconnection with terminal device
Connect and constitute whole Ethernet topological structure.Real time data dispatching method is responsible for carrying out the data produced by terminal in network
Forwarding, and ensure the real-time of real time data.The real-time of data refers to ensure that data needs are reached within the defined time
Purpose terminal, the data with requirement of real-time are referred to as real time data.Real time data dispatching method is to ensure that EPA is real
The key of when property.
Domestic existing real time data dispatching method is concentrated mainly on guarantee real-time function, can not tolerate that interchanger is sent out
Raw failure.In train network, the interchanger broken down is shorted, and causes the real time data for passing through the failed switches originally
Next interchanger is reached ahead of time, so as to cause the corresponding reception time window of data to mismatch, and then causes network to be lost
Bag problem.On train, the problems such as loss of real time data can cause such as brake failure, serious consequence is in turn resulted in.Therefore,
The real time data dispatching method with fault tolerance for inventing a kind of field of track traffic is very necessary.
The content of the invention
It can tolerate the real time data dispatching method that interchanger breaks down it is an object of the invention to provide a kind of.
Technical program of the present invention lies in the tune of the real time data with fault tolerance there is provided a kind of field of track traffic
Degree method, it is characterised in that：It is characterized in that comprising the following steps：
Step 1, the real-time ethernet switch system with fault tolerance is initialized；After hardware-initiated, to holding
Mismatch block is initialized, and empties the data in memory resource pool, and the value of address list is all set into 1；
Step 2, monitoring exchange fault；The linux system carried on CPU board, by being handed over around heartbeat data packets monitoring
Change planes and whether break down, when certain port of interchanger does not receive the heartbeat data packets specified, CPU judges that corresponding ports connect
The interchanger connect breaks down；When not detecting exchange fault, arbitration modules are directly by data frame transfer to real-time tune
Spend in module；
Step 3, response exchange fault, when CPU board detects exchange fault around, CPU sends to power board and beaten
The instruction of fault tolerance is opened, so as to open the fault tolerance of connecting fault switch ports themselves；
Step 4, judge whether arbitration modules are opened according to the fault tolerance of each port, determine from each port data bag
Flow direction；If the fault tolerance of port is closed, the data from the port are forwarded a packet to real-time tune by arbitration modules
Spend module；If the fault tolerance of port is in opening, the data from the port are forwarded a packet to storage by arbitration modules
Resource distribution module；
Step 5, when reach packet reception window when, control logic module according to stream identification field, it is determined that should
The address space of packet；If the address space is sky, what control logic module was switched to next packet fetches operation；
Otherwise, control logic module fetches the data in the space of change of address, then sets the value of the corresponding address list of the address space
It is set to 0.
The present invention has also carried a kind of real-time ether of the real time data dispatching method with fault tolerance of use track traffic
Network switch system, including CPU board, power board and PHY plates；It is characterized in that：
CPU board is controlled interacting for information and data message by PCI-e interfaces and power board, and power board passes through interface
Interacting for data message is carried out with PHY editions；
CPU board includes central processing unit, memory cell and PCI-e interfaces；
Real-time Linux system is run on CPU board, and exchanging for data is carried out with power board by PCI-e interfaces；
Power board is the hardware plate for realizing the real-time scheduling with fault tolerance；
PHY asic chips are included on PHY plates, is physical interface transceiver, is responsible for realizing physical layer.
The beneficial effects of the present invention are：It is effectively anti-when being shorted the invention enables the interchanger broken down in train
Only do sth. in advance to reach next interchanger by the real time data of the failed switches originally, so as to cause data are corresponding to connect
The problem of receiving time window to mismatch, and then cause Network Packet Loss.
Brief description of the drawings
Fig. 1 is that the real time data with fault tolerance of field of track traffic of the present invention dispatches the principle of system
Figure；
Fig. 2 two mouthfuls of switching cards internal structure exemplary plots of the present invention；
Fig. 3 four appearances of a street mismatch block structure exemplary plots of the present invention；
The appearance of the real time data dispatching method with fault tolerance of field of track traffic described in Fig. 4 inventions
Mismatch block program flow diagram；
Embodiment
Technical scheme is described further 1-4 below in conjunction with the accompanying drawings.
As shown in figure 4, this embodiment offers a kind of scheduling of the real time data with fault tolerance of field of track traffic
Method, it specifically includes following steps：
Step 1, the real-time ethernet switch system with fault tolerance is initialized；
After hardware-initiated, fault-tolerant module is initialized, the data in memory resource pool are emptied, by the value of address list
All it is set to 1；
Step 2, monitoring exchange fault；
The linux system carried on CPU board, monitors whether surrounding interchanger breaks down by heartbeat data packets, works as friendship
When certain port changed planes does not receive the heartbeat data packets specified, CPU judges that the interchanger of corresponding ports connection breaks down；When
When not detecting exchange fault, arbitration modules are directly by data frame transfer into Real-Time Scheduling module；
Step 3, response exchange fault, when CPU board detects exchange fault around, CPU sends to power board and beaten
The instruction of fault tolerance is opened, so as to open the fault tolerance of connecting fault switch ports themselves.
The instruction includes the value of one 32, and 1-32 port is corresponded to respectively from low level to high-order.When port opens fault-tolerant
During function, the position of the corresponding command value in the port is set to 1；When port shutdown fault tolerance, the corresponding command value in the port
Position be set to 0.
Whether step 4, arbitration modules are opened according to the fault tolerance of each port, determine the stream from each port data bag
To.If the fault tolerance of port is closed, the data from the port are forwarded a packet to Real-Time Scheduling by arbitration modules
Module；If the fault tolerance of port is in opening, the data from the port are forwarded a packet to storage money by arbitration modules
Source distribute module.
Storage resource distribute module, according to stream identification field, is that real time data bag distribution storage resource pool address is empty
Between.If data storage in the corresponding address space of data flow attribute field, storage resource distribute module empties the ground
The data in location space, and the value in its corresponding address list is set to 0, then enter row address to the real time data again empty
Between distribution；If the corresponding address space of data flow attribute field is sky, storage resource distribute module is stored data in
In the address space, and the value of its corresponding address list is set to 1.
Step 5, when reach packet reception window when, control logic module according to stream identification field, it is determined that should
The address space of packet.If the address space is sky, what control logic module was switched to next packet fetches operation；
Otherwise, control logic module fetches the data in the space of change of address, then sets the value of the corresponding address list of the address space
It is set to 0.
It is topic to reduce data contention caused by serial access memory resource pool, control logic module is carried out to packet
Prefetch, i.e., in advance take out data in given reception time window certain time.
The embodiment additionally provides a kind of real time data dispatching method with fault tolerance of use track traffic, this method
Realized by the real-time ethernet switch system with fault tolerance, wherein, the real-time ethernet with fault tolerance is handed over
System of changing planes includes CPU board, power board and PHY plates.
As shown in figure 1, wherein：CPU board is controlled the friendship of information and data message by PCI-e interfaces and power board
Mutually, power board carries out interacting for data message by S3MII interfaces with PHY editions.
CPU board includes central processing unit (CPU), memory cell and the PCI-e interface of PowerPC frameworks.Run on CPU board
Real-time Linux system, and exchanging for data is carried out with power board by PCI-e interfaces.
Power board is the hardcore board for realizing the real-time scheduling with fault tolerance, including physical device sum
Word circuit.The physical device of power board includes the chips of Xilinx vertex 7, Flash Rom, QDR external memorizers etc.；Exchange
The digital circuit of plate is burnt in Xilinx chips by FPGA design.
Broadcom PHY asic chips are included on PHY plates, is physical interface transceiver, is responsible for realizing physical layer.
Fig. 2 is the power board cut-away view of the present invention, and control physical equipment realizes the forwarding of normal data frame, ensures real
When data frame real-time transmission, and provide fault tolerance.
The internal structure of switching card includes MAC, grader, general data caching, clock data caching, real time data and led to
Road, ordinary data channel, MUX and PCI-E interface, wherein：
MAC is the interface of data, is responsible for sending and receiving the data frame in Ethernet.
Grader distinguishes the type of ethernet data frame according to the EtherType fields of ethernet frame data.0x88D7 is
Real-time data types, 0x8801 is clock data type.
The type of data frame be normal data frame, real time data frame and when unite data frame.Real time data frame is directly transmitted
To real-time data channel；Normal data frame is stored in general data caching；When system data storage clock data caching in.
General data caching is responsible for the incoming normal data frame of storage grader.
Clock data caching be responsible for storage grader it is incoming when unite data frame.
Real-time data channel is responsible for forwarding real time data, and provides fault tolerance.
It includes fault-tolerant module, Real-Time Scheduling module and time synchronized module.Fault-tolerant module is responsible for realizing that interchanger is fault-tolerant
Function；Real-Time Scheduling module is responsible for dispatching real time data frame, is transmitted with the real-time for ensureing data frame；Clock synchronization module is responsible for
The global clock of synchronization is provided for the equipment of whole network.
Ordinary data channel is responsible for realizing the forwarding capability of normal data frame.
MUX is responsible for according to priority, selects the data frame that send.The wherein priority of real time data frame
Highest, the priority of normal data frame is minimum.
Fig. 3 is the fault-tolerant function structure chart of the present invention, wherein realizing the module of fault tolerance includes arbitration modules, storage money
Source allocation logic module, memory resource pool and control logic module.
The function of arbitration modules is the flow direction for determining to enter fault-tolerant module data.Arbitration modules respond the life of central processing unit
Order, opens or closes fault tolerance.When fault tolerance is opened, arbitration modules transfer data to storage resource distribution mould
Block.When fault tolerance is closed, data are transmitted directly to real time data scheduler module by arbitration modules.
Storage resource distribute module is responsible for its position in memory resource pool of data distribution.In real time data, often
There is individual data flow a specific field to be identified, and field value is 1-4096.The module by parse identification field come
Storage location of the determination data stream in memory resource pool.
Memory resource pool, which is responsible for caching, to be needed to carry out fault-tolerant real time data.Memory resource pool in the present invention passes through external
Storage device QDR is realized.Address space in storage pool is 1-4096, and each space and can be only capable of one Ethernet of storage
Most long frame.Memory address space is corresponded with stream identification field.The address of maintenance one 4096 in memory resource pool
List, for recording in 1-4096 address spaces whether stored data.If address space stores data, in list
In the address bit be designated 1, be otherwise designated 0；
Control logic module is responsible for fetching data from memory resource pool in the defined time.Each real time data correspondence one
Reception time window and the transmission time of the data are recorded in the entry of individual timetable, entry.Each real time data should be in rule
Reach, and sent at defined time point in fixed time window.When reaching the reception time window of data, the mould
Block obtains stream identification field, and the data are obtained from memory resource pool.In acquisition process, the module inquires about address first
List, if the address column tabular value of data flow field corresponding address is 1, the module obtains data from memory resource pool, afterwards
Transfer data to Real-Time Scheduling module.Otherwise, what the module was not responding to the data fetches request.
Data reach grader by the reception of mac modules.Grader is by parsing the EtherType of Ethernet data
Field, fault-tolerant module is forwarded to by field value for 0x88D7 real time data.Real time data is first by arbitration modules, if should
The corresponding input port fault tolerance of real time data is closed, then is forwarded to Real-Time Scheduling module by arbitration modules；If this is real-time
The corresponding input port fault tolerance of data is opened, then is forwarded to by arbitration modules in storage resource distribute module.Storage resource
Distribute module is that the real time data distributes memory space in memory resource pool according to data identification field.Work as control logic module
When judging that the reception time of the real time data reaches, the real time data is taken out from memory resource pool, and be sent to real-time tune
Spend module.When opening the fault tolerance of port, factor data is advanceed to be buffered in resource storage pool up to real time data, and in regulation
The reception time be removed, so real time data will not because of advance to up to Real-Time Scheduling module and be dropped, it is achieved thereby that
Fault tolerance.
Although the principle of the present invention is described in detail above in conjunction with the preferred embodiments of the present invention, this area skill
Art personnel are it should be understood that above-described embodiment is only the explanation of the exemplary implementation to the present invention, not to present invention bag
Restriction containing scope.Details in embodiment is simultaneously not meant to limit the scope of the invention, in the spirit without departing substantially from the present invention and
In the case of scope, any equivalent transformation based on technical solution of the present invention, simple replacement etc. are obvious to be changed, and is all fallen within
Within the scope of the present invention.
Claims (6)
1. a kind of real time data dispatching method with fault tolerance of field of track traffic, it is characterised in that：It is characterized in that
Comprise the following steps：
Step 1, the real-time ethernet switch system with fault tolerance is initialized；After hardware-initiated, to fault-tolerant mould
Block is initialized, and empties the data in memory resource pool, and the value of address list is all set into 1；
Step 2, monitoring exchange fault；The linux system carried on CPU board, surrounding interchanger is monitored by heartbeat data packets
Whether break down, when certain port of interchanger does not receive the heartbeat data packets specified, CPU judges corresponding ports connection
Interchanger breaks down；When not detecting exchange fault, arbitration modules are directly by data frame transfer to Real-Time Scheduling mould
In block；
Step 3, response exchange fault, when CPU board detects exchange fault around, CPU sends to open to power board to be held
The instruction of wrong function, so as to open the fault tolerance of connecting fault switch ports themselves；
Step 4, judge whether arbitration modules are opened according to the fault tolerance of each port, determine the stream from each port data bag
To；If the fault tolerance of port is closed, the data from the port are forwarded a packet to Real-Time Scheduling by arbitration modules
Module；If the fault tolerance of port is in opening, the data from the port are forwarded a packet to storage money by arbitration modules
Source distribute module；
Step 5, when reach packet reception window when, control logic module determines the data according to stream identification field
The address space of bag；If the address space is sky, what control logic module was switched to next packet fetches operation；It is no
Then, control logic module fetches the data in the space of change of address, then sets the value of the corresponding address list of the address space
For 0.
2. the real time data dispatching method with fault tolerance of field of track traffic according to claim 1, its feature
It is, in step 4, storage resource distribute module, according to stream identification field, is real time data bag distribution memory resource pool
Location space；
If data storage in the corresponding address space of data flow attribute field, storage resource distribute module empties the ground
The data in location space, and the value in its corresponding address list is set to 0, then enter row address to the real time data again empty
Between distribution；
If the corresponding address space of data flow attribute field is sky, storage resource distribute module stores data in the address
In space, and the value of its corresponding address list is set to 1.
3. a kind of real time data dispatching method with fault tolerance for the use track traffic realized described in claim 1 is real-time
Ethernet switch system, including CPU board, power board and PHY plates；It is characterized in that：
CPU board is controlled interacting for information and data message by PCI-e interfaces and power board, power board by interface with
The interaction of PHY editions progress data messages；
CPU board includes central processing unit, memory cell and PCI-e interfaces；
Real-time Linux system is run on CPU board, and exchanging for data is carried out with power board by PCI-e interfaces；
Power board is the hardware plate for realizing the real-time scheduling with fault tolerance；
PHY asic chips are included on PHY plates, is physical interface transceiver, is responsible for realizing physical layer.
4. real-time ethernet switch system according to claim 3, it is characterised in that：The internal structure of switching card includes
MAC, grader, general data caching, clock data caching, real-time data channel, ordinary data channel, MUX, its
In：
MAC is the interface of data, is responsible for sending and receiving the data frame in Ethernet；
Grader distinguishes the type of ethernet data frame according to the EtherType fields of ethernet frame data；
The type of data frame be normal data frame, real time data frame and when unite data frame；Real time data frame is transmitted directly to reality
When data channel；Normal data frame is stored in general data caching；When system data storage clock data caching in；
General data caching is responsible for the incoming normal data frame of storage grader；
Clock data caching be responsible for storage grader it is incoming when unite data frame；
Real-time data channel is responsible for forwarding real time data, and provides fault tolerance；
MUX is responsible for according to priority, selects the data frame that send；The wherein highest priority of real time data frame,
The priority of normal data frame is minimum.
5. real-time ethernet switch system according to claim 4, it is characterised in that：Realize the module bag of fault tolerance
Include arbitration modules, storage resource allocation logic module, memory resource pool and control logic module；
Wherein, the function of arbitration modules is the flow direction for determining to enter fault-tolerant module data；Arbitration modules response central processing unit
Order, opens or closes fault tolerance；When fault tolerance is opened, arbitration modules transfer data to storage resource distribution mould
Block；When fault tolerance is closed, data are transmitted directly to real time data scheduler module by arbitration modules；
Storage resource distribute module is responsible for its position in memory resource pool of data distribution；
Memory resource pool, which is responsible for caching, to be needed to carry out fault-tolerant real time data；Control logic module is responsible in the defined time from depositing
Data are fetched in storage resource pool；
Reception time window and the transmission of the real time data are recorded in the entry of one timetable of each real time data correspondence, entry
Time；Each real time data should be reached in defined time window, and be sent at defined time point.
6. real-time ethernet switch system according to claim 5, it is characterised in that：Real time data passes through arbitration first
Module, if the corresponding input port fault tolerance of the real time data is closed, Real-Time Scheduling module is forwarded to by arbitration modules；
If the corresponding input port fault tolerance of the real time data is opened, storage resource distribution mould is forwarded to by arbitration modules
In block；
Storage resource distribute module is that the real time data distributes memory space in memory resource pool according to data identification field；
When control logic module judges that the reception time of the real time data reaches, the real time data is taken from memory resource pool
Go out, and be sent to Real-Time Scheduling module；
When opening the fault tolerance of port, factor data is advanceed to be buffered in resource storage pool up to real time data, and defined
The reception time is removed, so real time data will not be dropped because of advanceing to up to Real-Time Scheduling module, it is achieved thereby that holding
Wrong function.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417001.XA CN107276845B (en) | 2017-06-06 | 2017-06-06 | A kind of real time data dispatching method with fault tolerance of field of track traffic |
| PCT/CN2018/095177 WO2018224052A1 (en) | 2017-06-06 | 2018-07-10 | Real-time data scheduling method having fault tolerance function for use in field of rail transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710417001.XA CN107276845B (en) | 2017-06-06 | 2017-06-06 | A kind of real time data dispatching method with fault tolerance of field of track traffic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107276845A true CN107276845A (en) | 2017-10-20 |
| CN107276845B CN107276845B (en) | 2019-11-15 |
Family
ID=60064647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710417001.XA Active CN107276845B (en) | 2017-06-06 | 2017-06-06 | A kind of real time data dispatching method with fault tolerance of field of track traffic |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107276845B (en) |
| WO (1) | WO2018224052A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224052A1 (en) * | 2017-06-06 | 2018-12-13 | 清华大学 | Real-time data scheduling method having fault tolerance function for use in field of rail transportation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140022912A1 (en) * | 2012-07-23 | 2014-01-23 | Broadcom Corporation | Flexray communications using ethernet |
| CN103608762A (en) * | 2013-05-09 | 2014-02-26 | 华为技术有限公司 | Store device, storage system, and data transmission method |
| CN204272154U (en) * | 2014-12-31 | 2015-04-15 | 北京纵横机电技术开发公司 | The Ethernet switch of EMU network system |
| CN104796356A (en) * | 2015-04-16 | 2015-07-22 | 青岛四方车辆研究所有限公司 | Vehicle-mounted Ethernet switch and signal transceiving and train reconnecting method for railway vehicles |
| CN106330377A (en) * | 2016-08-25 | 2017-01-11 | 中车青岛四方车辆研究所有限公司 | Real-time data transmission system and method for rail train broadband network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978762B (en) * | 2016-04-27 | 2019-02-01 | 刘巍 | Redundant Ethernet data transmission set, system and method |
| CN107276845B (en) * | 2017-06-06 | 2019-11-15 | 清华大学 | A kind of real time data dispatching method with fault tolerance of field of track traffic |
-
2017
- 2017-06-06 CN CN201710417001.XA patent/CN107276845B/en active Active
-
2018
- 2018-07-10 WO PCT/CN2018/095177 patent/WO2018224052A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140022912A1 (en) * | 2012-07-23 | 2014-01-23 | Broadcom Corporation | Flexray communications using ethernet |
| CN103608762A (en) * | 2013-05-09 | 2014-02-26 | 华为技术有限公司 | Store device, storage system, and data transmission method |
| CN204272154U (en) * | 2014-12-31 | 2015-04-15 | 北京纵横机电技术开发公司 | The Ethernet switch of EMU network system |
| CN104796356A (en) * | 2015-04-16 | 2015-07-22 | 青岛四方车辆研究所有限公司 | Vehicle-mounted Ethernet switch and signal transceiving and train reconnecting method for railway vehicles |
| CN106330377A (en) * | 2016-08-25 | 2017-01-11 | 中车青岛四方车辆研究所有限公司 | Real-time data transmission system and method for rail train broadband network |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018224052A1 (en) * | 2017-06-06 | 2018-12-13 | 清华大学 | Real-time data scheduling method having fault tolerance function for use in field of rail transportation |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018224052A1 (en) | 2018-12-13 |
| CN107276845B (en) | 2019-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110109872B (en) | Unified storage management device for remote sensing satellite heterogeneous data | |
| CN105406998A (en) | Dual-redundancy gigabit ethernet media access controller IP core based on FPGA | |
| CN102035688B (en) | Design method for rapidly controlling network link access | |
| CN105933162B (en) | Low time delay ethernet repeater and method based on T-type structure | |
| CN104683201B (en) | A kind of remaining method of FlexRay bus communications four | |
| CN105516292A (en) | Hot standby method of cloud platform of intelligent substation | |
| CN104009976B (en) | A kind of real-time communication method being used between more main station systems and its equipment | |
| CN106773928A (en) | A kind of gigabit TTE end system controllers based on FPGA | |
| CN102724092A (en) | Profibus-DP communication protocol redundancy master station | |
| CN102412990B (en) | Remote sensing satellite raw data recording system with centralized management and real-time transmission functions | |
| CN103179178A (en) | Method and device for expanding member ports of aggregation groups among clusters | |
| CN101707629A (en) | Synchronous communication method of mirror images for self organization information of safety and stability control device of electric network | |
| CN103746927A (en) | Priority-based fluid control PFC (Power Factor Correction) method, transmitting device and receiving device | |
| CN107332794B (en) | Dynamic time slot locking method for time-triggered communication | |
| CN109946955A (en) | A kind of double-network redundant ethernet controller Linux trawl performance controller | |
| CN104639358B (en) | batch network port switching method and switching system | |
| CN105530157B (en) | The multiple virtual links of the AFDX network switch share the framework and method of credit | |
| CN106168933B (en) | A method of virtual dual-port shared drive is realized based on high-speed serial communication | |
| CN107276845B (en) | A kind of real time data dispatching method with fault tolerance of field of track traffic | |
| CN1545244A (en) | Method for implementing switching between main and standby port by network processor | |
| CN101247663B (en) | Considerable routing system and its forwarding table generation method | |
| CN104079460A (en) | Inter-board communication component based on POWERLINK technology | |
| CN103384225B (en) | Based on the flow control methods of input intersection cache fast packet switching network | |
| CN106411616B (en) | A kind of device and method by 1553B bus management ethernet terminal | |
| CN109361587A (en) | Intelligent station station level group network system and method based on HSR looped network and PRP redundant network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |