CN209182816U - A kind of trigger-type dual redundant network - Google Patents
A kind of trigger-type dual redundant network Download PDFInfo
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- CN209182816U CN209182816U CN201822143759.1U CN201822143759U CN209182816U CN 209182816 U CN209182816 U CN 209182816U CN 201822143759 U CN201822143759 U CN 201822143759U CN 209182816 U CN209182816 U CN 209182816U
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- interface card
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- logic switch
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Abstract
The utility model discloses a kind of trigger-type dual redundant networks, including CPU processor, cpci bus, logic switch module and board, CPU processor is electrically connected logic switch module and board by cpci bus, board includes primary network interface card and backup network interface card in parallel, and logic switch module and primary network interface card and backup network interface card are separately connected and read primary network interface card link state and backup network interface card link state；The method that the utility model reads double netcard status information by using logic switch module and carries out exception information confirmation and circuit switching control by CPU processor, it can reduce occupied bus data bandwidth when link detecting net card failure, guarantee network high-speed, efficient transmission performance, and it is fast to automatically switch response, the bit error rate is low, effectively meets current network communications field high speed, efficient and high performance requirement.
Description
Technical field
The utility model relates to automatic control technology field more particularly to a kind of trigger-type dual redundant networks.
Background technique
Currently, Ethernet is as high speed, efficient and high performance communication party with the continuous development of network communication technology
Formula will be used wider and wider general.Meanwhile in space flight and the application in Military Application field, to the reliable of network data transmission
More stringent requirements are proposed for property and stability.
The malfunction monitoring of traditional network interface card mainly include link detecting, from ring detection and data exchange detect these three modes its
In, link detecting judges network interface card current connection state by inquiring the value of link register, refers to that network interface card passes through from ring detection
Internal loopback data check the connection status of network, and data exchange detection is similar to from ring detects, unlike network interface card be not
Internal loopback, but data are sent and received for another fixing address in network.
In three kinds of traditional malfunction monitoring modes, Netowrk tape is typically taken up from ring detection and data exchange detection pattern
Width, to influence the performance of network, therefore preferred link detecting under normal circumstances.But traditional link detecting is generally logical
The mode of overpolling carries out data I/O operation, and the I/O operation is usually total with the same data of the transmission of network data occupancy
Line greatly occupies the transmission bandwidth of data, greatly reduces network high-speed, efficient transmission performance.
Utility model content
The purpose of the utility model is to provide a kind of trigger-type dual redundant networks, when can reduce link detecting net card failure
Occupied bus data bandwidth guarantees network high-speed, efficient transmission performance, and automatically switches response fastly, and the bit error rate is low, effectively
Meet current network communications field high speed, efficient and high performance requirement.
The technical solution adopted in the utility model are as follows:
A kind of trigger-type dual redundant network, including CPU processor, cpci bus, logic switch module and board, at CPU
It manages device and is electrically connected cpci bus one end, the cpci bus other end is electrically connected logic switch module and board, and board connection is outer
Portion's network communication equipment, board include primary network interface card and backup network interface card, logic switch module and major network in parallel
Network interface card and backup network interface card are separately connected and read primary network interface card link state and backup network interface card chain
Line state.
Further, the logic switch module uses FPGA.
Further, the logic switch module model HWD1270M.
Further, the primary network interface card and backup network interface card include sequentially connected mac controller,
PHY chip, network transformer and connector, mac controller connect cpci bus, and connector connects external network communication equipment；
Mac controller includes that status register, transmitter register, receiving register and control register, logic switch module read shape
State content of registers.
The utility model has the following beneficial effects:
(1) by being integrated with logic switch module and board, the integrated of Network Interface Module is realized, and cut by logic
Logic circuit is realized that the state of dual network reports automatically and is automatically switched with route between mold changing block and board, does not occupy data additionally
Transmission line reduces occupied bus data bandwidth when link detecting net card failure, guarantees network high-speed, efficient transporting
Can, and automatically switching response fastly, the bit error rate is low, effectively meets current network communications field high speed, efficient and high performance use
It is required that；
(2) by using logic switch module reading double netcard status information and true by CPU processor progress exception information
Recognize the method with circuit switching control, avoids additionally occupying data transmission link, Logistics networks while realizing link monitoring
Transmission efficiency, meanwhile, automatically switch response fastly, the bit error rate is low, ensures data transmission efficiency and quality.
Detailed description of the invention
Fig. 1 is the schematic block circuit diagram of dual redundant network in the utility model.
Specific embodiment
As shown in Figure 1, the utility model includes a kind of trigger-type dual redundant network, including CPU processor, cpci bus,
Logic switch module and board, CPU processor are electrically connected cpci bus one end, and the cpci bus other end is electrically connected logic and cuts
Block and board are changed the mold, board connects external network communication equipment, and board includes that primary network interface card and backup network in parallel connect
Mouth card, logic switch module and primary network interface card and backup network interface card are separately connected and read primary network interface card link
State and backup network interface card link state.
The utility model in order to better understand with reference to the accompanying drawing does furtherly the technical solution of the utility model
It is bright.
The utility model discloses a kind of trigger-type dual redundant networks, as shown in Figure 1, trigger-type dual redundant network includes
CPU processor, cpci bus, FPGA module and board, CPU processor are electrically connected cpci bus one end.
Primary network interface card and backup network interface card include sequentially connected mac controller, PHY chip, network change
Depressor and connector, mac controller connect cpci bus, and connector connects external network communication equipment；Mac controller includes shape
State register, transmitter register, receiving register and control register, logic switch module read status register content.
When the link state of network changes, the value of status register will change current communication control chip
Become, for the feature, the utility model constructs the logic switch mould for switching communication network card on the board at dual redundant network
Block.The cpci bus other end is electrically connected logic switch module and board, and board connects external network communication equipment, board packet
Include primary network interface card and backup network interface card in parallel, logic switch module and primary network interface card and backup network interface
Card is separately connected and reads primary network interface card link state and backup network interface card link state.
Under the increasingly urgent background of currently production domesticization application demand, the design is based on production domesticization parts selection and CPCI is total
Hardware device has been carried out production domesticization type selecting by the High Availabitity hot pluggable characteristics of line, and proposes that trigger-type redundant network automatically switches
Design, to solve bus bandwidth occupation problem, is greatly improved rate, wherein PGA module model preferably uses HWD1270M, PHY
Chip preferably use in electricity 32 JEM88E1111 chip, network transformer and connector preferably use Han Ren electronics corporation
HR618801E chip.
The application method of trigger-type dual redundant network disclosed in the utility model the following steps are included:
A, select work network interface card: select it is any for work network interface card in primary network interface card and backup network interface card, preferably
Primary network interface card is default work network interface card；
B, the status information of logic switch module timing read work network interface card, and record network card status；
If the network card status that works is normal, logic switch module records work network card status and is normal and repeats step B；
If the network card status that works is abnormal, logic switch module updates work network card status and is abnormal and enters in next step；
The status register contents of primary network interface card and backup network interface card are read in logic switch module timing；
C, logic switch module proposes interrupt requests to CPU processor by cpci bus；
D, whether CPU processor read work network card status information is abnormal, if normal, then return step B, if abnormal,
Switch operating network interface card simultaneously enters in next step；Detailed process is as follows:
If the network state of CPU processor read work network interface card is normal, logic switch module updates work network card status
Information is normal and return step B；
If CPU processor read work network card status is abnormal, CPU processor will work network interface card be switched to it is another in board
Road network interface card simultaneously enters in next step, meanwhile, report the abnormal network information of original work network interface card；
E, whether the work network card status information that CPU processor is read after switching is normal；If normal, then return step B；If
Abnormal, then CPU processor interrupts data and transmits and report Network Abnormal information, meanwhile, into next step；
F, the status information of primary network interface card and backup network interface card is read in logic switch module timing, and in major network
In network interface card and backup network interface card it is any restore it is normal when by cpci bus to CPU processor propose interrupt requests；
G, CPU reads whether primary network interface card and the state of backup network interface card are exception, if so, returning to step
Rapid F, if it is not, then return step A.
The utility model is gone forward side by side enforcement for the building of the production domesticization component progress trigger-type dual redundant network of above-mentioned selection
With, by production domesticization operating system acceptance of the bid kylin under verified, trigger-type dual redundant network disclosed in this practical information from
Dynamic switching time and the bit error rate meet current requirement.The utility model not only to realize some device network inquiry,
Trigger redundant network and automatically switch that there is directive significance, also to the demonstration of production domesticization device and the operating system that domesticizes, design, grind
Certain basis has been established in hair, maintenance and tactics method research, adapts to future market demand.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that,
It can still modify to technical solution documented by previous embodiment, or to some or all of the technical features
It is equivalently replaced, and these are modified or replaceed, the utility model embodiment that it does not separate the essence of the corresponding technical solution
The range of technical solution.
Claims (4)
1. a kind of trigger-type dual redundant network, it is characterised in that: including CPU processor, cpci bus, logic switch module and plate
Card, CPU processor are electrically connected cpci bus one end, and the cpci bus other end is electrically connected logic switch module and board, plate
Card connection external network communication equipment, board include primary network interface card and backup network interface card in parallel, logic switch mould
Block and primary network interface card and backup network interface card are separately connected and read primary network interface card link state and backup network
Interface card link state.
2. trigger-type dual redundant network according to claim 1, it is characterised in that: the logic switch module uses
FPGA。
3. trigger-type dual redundant network according to claim 2, it is characterised in that: the logic switch module model
HWD1270M。
4. trigger-type dual redundant network according to claim 1 or 2 or 3, it is characterised in that: the primary network interface card and
Backup network interface card includes sequentially connected mac controller, PHY chip, network transformer and connector, mac controller
Cpci bus is connected, connector connects external network communication equipment；Mac controller includes status register, transmitter register, connects
Receive register and control register, logic switch module read status register content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822143759.1U CN209182816U (en) | 2018-12-20 | 2018-12-20 | A kind of trigger-type dual redundant network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822143759.1U CN209182816U (en) | 2018-12-20 | 2018-12-20 | A kind of trigger-type dual redundant network |
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| Publication Number | Publication Date |
|---|---|
| CN209182816U true CN209182816U (en) | 2019-07-30 |
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| CN201822143759.1U Active CN209182816U (en) | 2018-12-20 | 2018-12-20 | A kind of trigger-type dual redundant network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112199241A (en) * | 2020-09-28 | 2021-01-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dual-network-port multi-board network hot backup device |
| CN112235630A (en) * | 2020-09-28 | 2021-01-15 | 卡莱特（深圳）云科技有限公司 | Data backup transmission method, LED mesh loop backup system and electronic equipment |
| WO2021110013A1 (en) * | 2019-12-05 | 2021-06-10 | 中车大连电力牵引研发中心有限公司 | Discrete high-speed redundancy switching-based input/output device |
-
2018
- 2018-12-20 CN CN201822143759.1U patent/CN209182816U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021110013A1 (en) * | 2019-12-05 | 2021-06-10 | 中车大连电力牵引研发中心有限公司 | Discrete high-speed redundancy switching-based input/output device |
| CN112199241A (en) * | 2020-09-28 | 2021-01-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dual-network-port multi-board network hot backup device |
| CN112235630A (en) * | 2020-09-28 | 2021-01-15 | 卡莱特（深圳）云科技有限公司 | Data backup transmission method, LED mesh loop backup system and electronic equipment |
| CN112199241B (en) * | 2020-09-28 | 2023-06-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Double-network-port multi-board-card network hot backup device |
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