CN110245038A - Data cross backup and restorer and method - Google Patents
Data cross backup and restorer and method Download PDFInfo
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- CN110245038A CN110245038A CN201910546287.0A CN201910546287A CN110245038A CN 110245038 A CN110245038 A CN 110245038A CN 201910546287 A CN201910546287 A CN 201910546287A CN 110245038 A CN110245038 A CN 110245038A
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- 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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
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- 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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The present invention provides a kind of backups of data cross and restorer and method, including the main part machine of bus control unit, remote terminal, remote terminal backup machine and bus coupler；Target data is imported Backup Data for timing and organizes packet and be sent to bus control unit by the main part machine of remote terminal；The bus control unit receives and judges the data recovery request of the remote terminal backup machine for receiving and saving the Backup Data, send the Backup Data to remote terminal backup machine；The remote terminal backup machine receives the Backup Data of bus control unit transmission, and then the Backup Data is exported for obtaining the rear to bus control unit transmission data recovery request of control.The present invention solve the problems, such as in spaceborne 1553B network after crucial single machine or subsystem collapse backup machine it is autonomous, it is seamless be restored to normal operating conditions and workflow before failure occurs, achieve the beneficial effect for improving satellite key single machine reliability in orbit.
Description
Technical field
The present invention relates to satellite data communications and technology of data copy, and in particular, to a kind of backup of data cross with it is extensive
Multiple device and method.
Background technique
There are factors such as High energy particles Radiation, vacuum, elemental oxygen and the big temperature difference in space environment, space may cause
There is all kinds of instantaneous or permanent failure in electronic product, in this case, the critical computer in satellite carried network, and such as
Attitude and orbit control computer, integrated electronics computer etc. configure two single machines of A, B in order to improve system reliability and make hot and cold backup,
Wherein A machine default is usually mutually sent out just as main part machine when powering on, B machine as backup machine, the identical software of two single-unit operations
Regular signal, when catastrophe failure occurs for main part machine, sends normal signal without normal direction backup machine whithin a period of time, backup machine can be incited somebody to action
Control switches to backup machine, and computer is made to continue to execute scheduled normal tasks.
Computer for a long time in orbit during, since two mutually redundant single machine controls are different, under warm back-up
Difference, such as system time, the track root of Attitude and orbit control computer may also occur in standby machine program circuit and important process state
Number, control model and sensor selection parameter etc., standby host brings into operation from original state under cold standby, data and former main part machine
Data difference it is bigger, after switching in this way, must just realize to the recovery of the data of original normal operating conditions.
Data recovery relies primarily on ground and injects after existing failure, after running a period of time, passes through persistently in-orbit data
Number adjustment is monitored and continues to infuse, system just can enter normal operating conditions, and this mode quickly, independently, can not be realized seamlessly
System is restored.It is main part machine directly by data backup to backup machine there are also kind of a scheme, but this scheme is only applicable to warm back-up system
It unites, the public caching or interface cable of large capacity is needed between A, B machine, overhead is very big, and since A, B machine are generally in object
In reason and electric position relatively, or even on same board, it is thus possible to while by external environment influence, lead to data
Reliability it is not high.Therefore, a kind of method of data cross backup and recovery using the existing spaceborne 1553B network architecture is studied
Can solve in two-unit standby system after system crash data from advocate peace seamless recovery the problem of.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of backups of data cross and restorer and side
Method, is able to solve in spaceborne 1553B network that backup machine after crucial single machine or subsystem collapse is autonomous, seamless is restored to failure
The problem of preceding normal operating conditions and workflow, realizes the purpose of spaceborne computer fault detection, isolation and recovery.
The data cross backup provided according to the present invention and restorer, including the main part machine of bus control unit, remote terminal,
Remote terminal backup machine and bus coupler；
Target data is imported Backup Data for timing and organizes packet and be sent to bus marco by the main part machine of remote terminal
Device；
The bus control unit, for receiving and save the Backup Data, receiving and judging the remote terminal backup
The data recovery request of machine sends the Backup Data to remote terminal backup machine；
The remote terminal backup machine, for sending data recovery request to bus control unit in the rear of acquisition control,
The Backup Data of bus control unit transmission is received, and then the Backup Data is exported.
Data cross provided by the invention backup and restoration methods, using the data cross backup and restorer,
Include the following steps:
Step S1: target data is imported Backup Data by the timing of remote terminal main part machine, so by Backup Data group packet to
Bus control unit sends Backup Data；
Step S2: bus control unit receives the Backup Data；
Step S3: remote terminal backup machine sends recovery request data to bus control unit after obtaining control；
Step S4: bus control unit sends Backup Data to remote terminal backup machine.
Preferably, further include following either step:
Step S5: after remote terminal backup machine judges that data recovery request interrupts, setting data recovering mark is effective；
Step S6: when remote terminal backup machine judge data recovering mark for effectively after, the Backup Data received is led
Out.
It preferably, further include following steps before step S1
The main part machine of remote terminal is with obtaining in the Backup Data storage of each data element in a computer
Location, length, data type and all data element put in order.
Preferably, in step sl, the main part machine of the remote terminal is when by the Backup Data group packet, to collected
After target data sequence plus at least verification of a byte and；
It is described verification and be to target data sequence by byte carry out one by one exclusive or calculate.
Preferably, the step S1 further includes following steps:
Step S101: the main part machine of remote terminal will be written corresponding to data backup subaddressing after Backup Data group packet
Caching is sent, and predefined data backup service request position in vector font is set；
Step S102: when the bus control unit judges vector font data backup service request position and the predefined number
Position position consistency is requested according to backup services, thens follow the steps S2.
Preferably, the Backup Data received is saved in the storage inside of bus control unit by the bus control unit
In medium.
Preferably, the step S3 includes the following steps:
Step S301: the remote terminal backup machine timing judges the state of control power of the machine, when this judges control
State is to have the right, and last state of control power is to have no right, then requests position by the data recovery services in setting vector font,
Recovery request is sent to bus control unit；
Step S302: when the bus control unit judges data recovery services request position and the remote terminal in vector font
When the data recovery services of backup machine setting request position position consistency, S4 is thened follow the steps.
Preferably, the bus control unit is sent to the remote terminal backup machine Backup Data length and described long-range
Terminal main part machine sends in the length of Backup Data and the internal storage medium of bus control unit to bus control unit and saves
Backup Data total length is consistent.
Preferably, the step S6 specifically, the remote terminal backup machine is in periodicity or in main program, sentence by poll
Whether disconnected data recovering mark is effective, and when data recovering mark is effective, the Backup Data received is exported, while will count
It is set as invalid according to recovering mark.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the present invention is under the conditions of cold standby, after remote terminal main part machine system crash, the power-up of remote terminal backup machine
Afterwards can also autonomous recovery system collapse before main part machine working condition, meanwhile, it is total that original spaceborne 1553B is utilized to greatest extent
Line Internet resources, without increasing interface circuit or public caching between master backup machine thus.
2, backup machine is autonomous, seamless extensive after the present invention solves in spaceborne 1553B network crucial single machine or subsystem collapse
The problem of preceding normal operating conditions and workflow occur for failure is arrived again, and it is reliable in orbit to achieve raising satellite key single machine
The beneficial effect of property.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the block diagram of data cross backup and restorer in the present invention；
Fig. 2 is the flow chart of data cross backup and restoration methods in the present invention.
In figure:
1 is 1553B bus coupler.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Fig. 1 is the block diagram of data cross backup and restorer in the present invention, as shown in Figure 1, data provided by the invention
Intersect backup and restorer, including the main part machine of bus control unit, remote terminal, remote terminal backup machine and bus coupler；
Target data is imported Backup Data for timing and organizes packet and be sent to bus marco by the main part machine of remote terminal
Device；
The bus control unit, it is long-range for receiving and save the Backup Data of the main part machine of remote terminal, receiving and judging
The data recovery request of terminal backup machine sends Backup Data to remote terminal backup machine；
The remote terminal backup machine sends data recovery request to bus control unit for obtaining the rear of control, connects
The Backup Data for receiving bus control unit transmission, Backup Data is exported to scheduled critical data.
In the present embodiment, the present invention is under the conditions of cold standby, after remote terminal main part machine system crash, remote terminal
After backup machine power-up can also autonomous recovery system collapse before main part machine working condition, meanwhile, be utilized to greatest extent original
Spaceborne 1553B bus network resource, without increasing interface circuit or public caching between master backup machine thus.
Fig. 2 is the flow chart of data cross backup and restoration methods in the present invention, as shown in Fig. 2, number provided by the invention
According to backup and restoration methods are intersected, using above-mentioned data cross backup and restorer, the main part machine of remote terminal needs
Storage address, length, data type and each item number of each data element of importing Backup Data in a computer are obtained in advance
According to putting in order for element, include the following steps:
Step S1: target data is imported Backup Data by the timing of remote terminal main part machine, so by Backup Data group packet to
Bus control unit sends Backup Data；
In step sl, the main part machine of the remote terminal is when by the Backup Data group packet, to collected number of targets
According to after sequence add 1 byte verification and；
It is described verification and be to target data sequence by byte carry out one by one exclusive or calculate.
More specifically, hair corresponding to data backup subaddressing will be written in the main part machine of remote terminal after Backup Data group packet
Caching is sent, and it is 1 that predefined data backup service request position in vector font, which is arranged,；
When bus control unit judges that vector font data backup service request position is asked with the predefined data backup service
A position consistency is sought, that is, when judging that the data backup service request position is 1, thens follow the steps S2.
Step S2: bus control unit receives the Backup Data；
Wherein, it is to acquire in step S1 that the bus control unit, which receives data sequence length in the Backup Data of remote terminal,
To target data sequence total length add 1.
The bus control unit will receive the Backup Data and be saved in the internal storage medium of bus control unit.
Step S3: remote terminal backup machine sends recovery request data to bus control unit after obtaining control；
In an embodiment of the present invention, in step S3, the remote terminal backup machine timing judges the control shape of the machine
State, when this judges state of control power for " having the right ", and last state of control power is " having no right ", then passes through setting vector font
In data recovery services request position be 1, to bus control unit send recovery request.
The bus control unit judges that data recovery services request position and the remote terminal backup machine are arranged in vector font
Data recovery services when requesting position position consistency, i.e., when judge that vector font data recovery services request position as 1, then follow the steps
S4。
Step S4: bus control unit sends Backup Data to remote terminal backup machine；
In an embodiment of the present invention, the Backup Data that the bus control unit is sent to the remote terminal backup machine is long
Degree sends the length of Backup Data and the storage inside of bus control unit with the main part machine of the remote terminal to bus control unit
The Backup Data total length saved in medium is consistent.
Step S5: after remote terminal backup machine judges that data recovery request interrupts, setting data recovering mark is effective；
Step S6: when remote terminal backup machine judge data recovering mark for effectively after, the Backup Data received is led
Out.
The present invention solves in spaceborne 1553B network that backup machine after crucial single machine or subsystem collapse is autonomous, seamless recovery
The problem of preceding normal operating conditions and workflow occurs to failure achieves and improves satellite key single machine reliability in orbit
Beneficial effect.
In an embodiment of the present invention, the subaddressing that data backup and data are restored is disposed as 12, data backup and extensive
The corresponding 1553B of subaddressing caches first address as 0x400 again, and in vector font, data backup service request position is B5, and data are restored
Service request bit is B6.
In an embodiment of the present invention, the step S6 specifically, the remote terminal backup machine periodically or in master
Poll judges whether data recovering mark is effective in program, when data recovering mark is effective, the Backup Data that will receive
Export, while setting invalid for data recovering mark.
Byte exclusive or one by one is pressed to the Backup Data before remote terminal backup machine exports Backup Data, when exclusive or result
When being zero, Backup Data is exported.
When each data element storage address, length, data type and items in a computer of export Backup Data
Storage address, the length of each data element in a computer in the Backup Data imported with step S1 that puts in order of data element
Degree, data type and all data element put in order it is completely the same.
It is crucial in spaceborne 1553B network when carrying out using data cross provided by the invention backup and restorer method
When single machine or subsystem back up, the main part machine software timing of remote terminal is performed the following operations every 8s:
Acquire Satellite attitude and orbit control key variables totally 255 byte；What 255 byte datas successively imported that address 0x400 starts deposits
It stores up in space；Calculate 255 bytes exclusive or and, be written the 256th byte units in；Set (the data backup clothes of position B5 in vector font
Business request position) it is 1.
The every 2s of bus control unit software is performed the following operations: the mode for sending " sending vector font " to each remote terminal refers to
It enables, query vector word；Whether the B5 (data backup service request position) of disconnected vector font is 1, if it is 1, receives Backup Data,
Write bus controller internal SRAM；Judge whether the B6 (data recovery services request position) of vector font is 1, it, will if it is 1
The Backup Data stored in SRAM is sent to remote terminal backup machine；
Remote terminal backup machine is performed the following operations in the every 0.5s of main task:
This period control and upper period control are judged, if this period control is " having the right ", upper period control
For " having no right ", then setting vector font B6 (data recovery services request position) is 1；
Remote terminal backup machine reads subaddressing control word, judges subaddressing, such as fruit in 1553B message interrupt
Address is 12, then setting data recovering mark is " effective "；
Remote terminal backup machine continues every 0.5s in main task and judges data recovering mark, if data recovering mark is
" effective " then reads subsequent 256 byte data that 1553B caching first address is 0x400；
Exclusive or is carried out for unit by byte to 256 byte datas, if result is equal to zero, by 255 byte of valid data
In the rail control key variables defined before with data type write-in in order.
The present invention can be realized crucial single machine in spaceborne network, the critical data backup of subsystem and after system crash
The function that data are restored, spaceborne network are based on the networking of 1553B bus standard, wherein at least include bus control unit, remote terminal
Main part machine and remote terminal backup machine, the main part machine timing of remote terminal is using the data of key variables in computer as target data
It is imported into Backup Data, by protocol groups packet, the data backup position in vector font is set, backup data package is sent to bus marco
Device；In the memory that Backup Data is stored in bus control unit after judging the data backup position in vector font by bus control unit,
When determining the data backup service request position in vector font, Backup Data is sent to remote terminal backup machine；It is long-range whole
End backup machine, which seizes power to start after teleterminal system collapse, restores process, and data recovery services in vector font are arranged and request position,
Data recovery request is sent to bus control unit, then waits bus data to receive and interrupts, is judging that data restore interruption
Afterwards, set data recovering mark be it is effective, when remote terminal backup machine main flow judges that data recovering mark is effective, will receive
Backup Data sequence by definition export back the key variables of computer.To which the present invention has been able to solve in spaceborne network
Because after failure system collapse, the backup machine for replacing main part machine quickly, cannot be returned to independently before system crash crucial single machine
System mode the problem of.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of backup of data cross and restorer, which is characterized in that including bus control unit, the main part machine of remote terminal, remote
Journey terminal backup machine and bus coupler；
Target data is imported Backup Data for timing and organizes packet and be sent to bus control unit by the main part machine of remote terminal；
The bus control unit, for receiving and save the Backup Data, receiving and judging the remote terminal backup machine
Data recovery request sends the Backup Data to remote terminal backup machine；
The remote terminal backup machine is received for obtaining the rear to bus control unit transmission data recovery request of control
The Backup Data sent to bus control unit, and then the Backup Data is exported.
2. a kind of backup of data cross and restoration methods, using data cross described in claim 1 backup and restorer,
It is characterized in that, includes the following steps:
Step S1: target data is imported Backup Data by the timing of remote terminal main part machine, and then by Backup Data group packet to bus
Controller sends Backup Data；
Step S2: bus control unit receives the Backup Data；
Step S3: remote terminal backup machine sends recovery request data to bus control unit after obtaining control；
Step S4: bus control unit sends Backup Data to remote terminal backup machine.
3. data cross backup according to claim 2 and restoration methods, which is characterized in that further include following either step
Step S5: after remote terminal backup machine judges that data recovery request interrupts, setting data recovering mark is effective；
Step S6: when remote terminal backup machine judge data recovering mark for effectively after, by the Backup Data received export.
4. data cross backup according to claim 2 and restoration methods, which is characterized in that further include before step S1
Following steps
The main part machine of remote terminal obtains storage address, the length of each data element in a computer in the Backup Data
Degree, data type and all data element put in order.
5. data cross backup according to claim 2 and restoration methods, which is characterized in that in step sl, described remote
The main part machine of journey terminal is when by the Backup Data group packet, to the school for adding an at least byte after collected target data sequence
Test and；
It is described verification and be to target data sequence by byte carry out one by one exclusive or calculate.
6. data cross according to claim 2 backup and restoration methods, which is characterized in that the step S1 further include as
Lower step:
Step S101: transmission corresponding to data backup subaddressing will be written in the main part machine of remote terminal after Backup Data group packet
Caching, and predefined data backup service request position in vector font is set；
Step S102: when the bus control unit judges that vector font data backup service request position and the predefined data are standby
Part service request bit position consistency, thens follow the steps S2.
7. data cross backup according to claim 2 and restoration methods, which is characterized in that the bus control unit will connect
The Backup Data received is saved in the internal storage medium of bus control unit.
8. data cross backup according to claim 2 and restoration methods, which is characterized in that the step S3 includes as follows
Step:
Step S301: the remote terminal backup machine timing judges the state of control power of the machine, when this judges state of control power
To have the right, and last state of control power is to have no right, then requests position by the data recovery services in setting vector font, to total
Lane controller sends recovery request；
Step S302: when the bus control unit judges that data recovery services request position and the remote terminal back up in vector font
When the data recovery services of machine setting request position position consistency, S4 is thened follow the steps.
9. data cross according to claim 2 backup and restoration methods, which is characterized in that the bus control unit is to institute
The Backup Data length for stating the transmission of remote terminal backup machine sends backup number to bus control unit with the main part machine of the remote terminal
According to length and bus control unit internal storage medium in the Backup Data total length that saves it is consistent.
10. data cross according to claim 3 backup and restoration methods, which is characterized in that the step S6 specifically,
The remote terminal backup machine is poll judges whether data recovering mark is effective periodically or in main program, when data are restored
When mark is effective, the Backup Data received is exported, while setting invalid for data recovering mark.
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| CN201910546287.0A CN110245038B (en) | 2019-06-21 | 2019-06-21 | Data cross backup and recovery device and method |
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| CN113204188A (en) * | 2021-04-26 | 2021-08-03 | 中国人民解放军国防科技大学 | Multimode-driven quick-response satellite switching instruction system and design and application method thereof |
| CN113467990A (en) * | 2021-05-31 | 2021-10-01 | 上海卫星工程研究所 | Deep space exploration important data backup and recovery method and system |
| CN113672365A (en) * | 2021-08-04 | 2021-11-19 | 北京控制工程研究所 | Condition-triggered on-board computer backup scheduling method and system |
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| CN108847879A (en) * | 2018-06-14 | 2018-11-20 | 上海卫星工程研究所 | Two-shipper fault detection and restoration methods based on bus control unit |
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| CN113204188A (en) * | 2021-04-26 | 2021-08-03 | 中国人民解放军国防科技大学 | Multimode-driven quick-response satellite switching instruction system and design and application method thereof |
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| CN113467990B (en) * | 2021-05-31 | 2022-03-18 | 上海卫星工程研究所 | Deep space exploration important data backup and recovery method and system |
| CN113672365A (en) * | 2021-08-04 | 2021-11-19 | 北京控制工程研究所 | Condition-triggered on-board computer backup scheduling method and system |
| CN113672365B (en) * | 2021-08-04 | 2024-02-09 | 北京控制工程研究所 | Method and system for scheduling backup of conditional triggering type spaceborne computer |
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| CN110245038B (en) | 2023-08-18 |
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