CN106896792A - Method of data synchronization and device - Google Patents
Method of data synchronization and device Download PDFInfo
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- CN106896792A CN106896792A CN201710060410.9A CN201710060410A CN106896792A CN 106896792 A CN106896792 A CN 106896792A CN 201710060410 A CN201710060410 A CN 201710060410A CN 106896792 A CN106896792 A CN 106896792A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33273—DCS distributed, decentralised controlsystem, multiprocessor
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
Abstract
The embodiment of the present invention provides a kind of method of data synchronization and device.Methods described includes：After any control station fault recovery, the control station of failure in the dcs of the nuclear power station is carried out into output locking, so that the control station of the failure is in bypass state；The variable of the control station of failure is compared with the variable of the control station of selected non-failure, data to be synchronized are determined；Data transmission channel is set up with the control station of the failure, and based on the data transmission channel set up, data syn-chronization is carried out to the data to be synchronized.In the embodiment of the present invention, realize the control station of data syn-chronization to failure accurately and reliably, it is simple to operate, while ensure that the security and availability of dcs.
Description
Technical field
The present invention relates to technical field of data processing, more particularly to a kind of method of data synchronization and device.
Background technology
Dcs (Distributed Control System, DCS) is a kind of collection control technology, computer
Technology, the communication technology, network technology are in the new control system of one.It is used for decentralised control and centralized management, specifically multiple
The control task of miscellaneous industrial process is distributed on several control stations and completes.The protection system of nuclear power station be most important system it
One, realized using dcs, it is reactor stabilization, the powerful guarantee of safe and reliable operation.Protection system is available
Analogue technique is realized using digitizing technique.
When the inconsistent situation of data occur in two control stations, between generally solving control station by following two modes
Data synchronization problems.One is that equipment is adjusted manually, reaches the purpose of data syn-chronization；Two can be carried out when being inconsistent data
Alarm, when restarting to one of control station, using the means of communication between two control stations automatically by another control station number
Come according to synchronous.
Second method is typically to be provided with status register between two control stations, and includes voting machine part,
Each control station is connected in parallel to voting machine part, is also connected by status register replicate data passage portion, voting machine portion
Divide and replicate passage portion connection with the corresponding status register on each control station respectively.After control station breaks down, it is
Voting machine in system is positioned to the control station for breaking down, and then notifies control of the external status register to breaking down
System station is updated by partial reconfiguration technology, and the control station after renewal can be just operated in addition system again.
However, above two mode has following weak point：First, first way complex operation, error are big, while
Risk can be brought to the execution of system security function；Secondly, the second way needs to restart control station, so that influence system can
The property used.Further, since having means of communication between control station, therefore system operation reliability is had a certain impact.
The content of the invention
It is an object of the present invention to provide a kind of method of data synchronization and device, accurately and reliably same by data to realize
Walk to the control station of failure, it is simple to operate, while ensure that the security and availability of dcs.
According to an aspect of the present invention, there is provided a kind of method of data synchronization.Methods described includes：In any control station
After fault recovery, the control station of failure in the dcs of the nuclear power station is carried out into output locking, so that the event
The control station of barrier is in bypass state；The variable of the control station of failure is compared with the variable of the control station of selected non-failure
It is right, determine data to be synchronized；Data transmission channel is set up with the control station of the failure, and is passed based on the data set up
The data to be synchronized are carried out data syn-chronization by defeated passage.
Preferably, the variable of the control station by failure is compared with the variable of the control station of selected non-failure,
Determine that data to be synchronized include：
Obtain the online value of the first variable and the control of the failure of at least one variable of the control station of the non-failure
The second variable for making the relevant variable at station is worth online；
It is worth online and institute by by the first variable of each at least one variable of the control station of the non-failure
The online value of the second variable for stating the relevant variable of the control station of failure is compared, and determines the data to be synchronized.
Preferably, the first variable of at least one variable of the control station of non-failure described in the acquisition is worth and institute online
The online value of the second variable for stating the relevant variable of the control station of failure includes：
Non- failure described in reduced parameters's list of the variable compared for needs is obtained according to reduced parameters's list
Control station each variable the first variable online value and reduced parameters's list described in failure control station it is corresponding
Second variable of variable is worth online.
Preferably, the data transmission channel set up between the control station based on the failure and engineer station, it is right
The data to be synchronized are carried out after data syn-chronization, are also included：
Disconnect the data transmission channel, and release the bypass state residing for the control station of the failure.
Preferably, methods described also includes：
The respective variable information of the multiple control station is obtained, and the contrast is set up according to the variable information for getting and become
Amount list.
Preferably, the variable information includes at least one of：Data name, data type and online value.
Preferably, described after any control station fault recovery, by event in the dcs of nuclear power station
Before the control station bypass of barrier, also include：
The data for needing synchronization respective to the multiple control station carry out variable-definition.
Preferably, the data for needing synchronous data to include following at least one logical transport：Rest-set flip-flop, Z triggerings
Device, self-sustaining logical sum delayer.
According to another aspect of the present invention, there is provided a kind of data synchronization unit.Described device includes：Control station locking mould
Block, for after any control station fault recovery, by the control station of failure in the dcs of the nuclear power station
Output locking is carried out, so that the control station of the failure is in bypass state；Variable comparing module, for by the control station of failure
Variable compare with the variable of the control station of selected non-failure, determine data to be synchronized；Path Setup and data are same
Step module, data transmission channel is set up for the control station with the failure, and based on the data transmission channel set up, it is right
The data to be synchronized carry out data syn-chronization.
Preferably, the variable comparing module includes：
Variable is worth acquiring unit online, the first variable of at least one variable of the control station for obtaining the non-failure
Second variable of the relevant variable of the control station of online value and the failure is worth online；
Synchrodata determining unit, for by by each at least one variable of the control station of the non-failure
The online value of second variable of the relevant variable of the control station of the online value of the first variable and the failure is compared, it is determined that described
Data to be synchronized.
Preferably, the variable is worth acquiring unit and compares for needs for being obtained according to reduced parameters's list online
Variable reduced parameters's list described in non-failure control station each variable the first variable online value and the contrast
Second variable of the relevant variable of the control station of failure described in variable list is worth online.
Preferably, described device also includes：Passage disconnects and bypass releases module, leads to for disconnecting the data transfer
Road, and release the bypass state residing for the control station of the failure.
Preferably, described device also includes：Module is set up in list, for obtaining the respective variable letter of the multiple control station
Breath, and reduced parameters's list is set up according to the variable information for getting.
Preferably, the variable information includes at least one of：Data name, data type and online value.
Preferably, described device also includes：Variable-definition module, for the respective need synchronization of the multiple control station
Data carry out variable-definition.
Preferably, the data for needing synchronous data to include following at least one logical transport：Rest-set flip-flop, Z triggerings
Device, self-sustaining logical sum delayer.
The method of data synchronization and device for providing according to embodiments of the present invention, by after any control station fault recovery,
The control station of failure is carried out into output locking, so that the control station of failure is in bypass state；Further by the control station of failure
Variable compare with the variable of the control station of selected non-failure, determine data to be synchronized；Based on the control with failure
Stand set up data transmission channel, data syn-chronization is carried out to data to be synchronized.It is achieved thereby that accurately and reliably that data are same
Walk to the control station of failure, it is simple to operate, while ensure that the security and availability of dcs.
Brief description of the drawings
Fig. 1 is the flow chart of the method for data synchronization for showing according to embodiments of the present invention；
Fig. 2 is the flow chart of the method for data synchronization for showing according to embodiments of the present invention two；
Fig. 3 is the logic diagram of the data synchronization unit for showing according to embodiments of the present invention three；
Fig. 4 is the logic diagram of the data synchronization unit for showing according to embodiments of the present invention four.
Specific embodiment
(identical label represents identical element in some accompanying drawings) and embodiment below in conjunction with the accompanying drawings, to tool of the invention
Body implementation method is described in further detail.Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
It will be understood by those skilled in the art that the term such as " first ", " second " in the present invention to be only used for difference asynchronous
Suddenly, equipment or module etc., neither represent any particular technology implication, also do not indicate that the inevitable logical order between them.
Embodiment one
Fig. 1 is the flow chart of the method for data synchronization for showing according to embodiments of the present invention.Can be stood in such as service engineer
Etc. performing methods described in equipment.The method of data synchronization is used for the dcs of nuclear power station, the distribution of nuclear power station
Control system includes being configured as multiple control stations of parallel redundancy.
Reference picture 1, in step S110, after any control station fault recovery, by the dcs of nuclear power station
The control station of failure carries out output locking, so that the control station of failure is in bypass state.
Specifically, after the control station of failure restarts system, the control station of failure is bypassed, that is, by whole control station
Output locking, i.e., do not exported.
In step S120, the variable of the control station of failure is compared with the variable of the control station of selected non-failure,
Determine data to be synchronized.
In concrete implementation mode, complete to set up the process of reduced parameters's list generally in factory according to the right of foundation
Variable watch is carried out to two parallel redundancy control stations (i.e. the control station of the control station of failure and non-failure) than variable list, is obtained
Variable comparison result is obtained, for follow-up data syn-chronization step provides data basis.
In step S130, data transmission channel is set up with the control station of failure, and based on the data transmission channel set up, it is right
Data to be synchronized carry out data syn-chronization.
In actual applications, service engineer station connects not event by safety bus, data transmission station and gateway simultaneously
The control station of barrier, in order to obtain the data of the variable of the control station of non-failure, and is synchronized to the control station of failure.
Additionally, the connected mode between service engineer station and control station can be communicated according to platform character using other
Medium or communications protocol carry out data interaction, and the present embodiment is not especially limited to this.
Method of data synchronization provided in an embodiment of the present invention, by after any control station fault recovery, by the control of failure
Station processed carries out output locking, so that the control station of failure is in bypass state；Further by the variable of the control station of failure and choosing
The variable of the control station of fixed non-failure is compared, and determines data to be synchronized；Based on the number that the control station with failure is set up
According to transmission channel, data syn-chronization is carried out to data to be synchronized.It is achieved thereby that accurately and reliably by data syn-chronization to failure
Control station, it is simple to operate, while ensure that the security and availability of dcs.Additionally, need not between control station
Means of communication, further improves dcs reliability of operation.
Embodiment two
Fig. 2 is the flow chart of the method for data synchronization for showing according to embodiments of the present invention two, and the embodiment can be considered Fig. 1
Another concrete implementation scheme.Methods described can be performed in data synchronization unit as shown in Figure 4.
Reference picture 2, in step S210, after any control station fault recovery, by the dcs of nuclear power station
The control station of failure carries out output locking, so that the control station of failure is in bypass state.
Wherein, content is identical the step of step S110 with above-described embodiment one for the step of above-mentioned steps S210 contents,
This is repeated no more.
According to alternative embodiment of the present invention, before step S210, the method for data synchronization also includes：To multiple control stations
The respective data for needing synchronization carry out variable-definition.
It should be noted that needing data of the synchronous data including following at least one logical transport：Rest-set flip-flop, Z are touched
Hair device, self-sustaining logical sum delayer, but not limited to this.
The process of above-mentioned variable-definition is generally completed in factory.Variable-definition means and prison synchronous to the need in control station
Depending on data carry out configuration definition, that is, control station is carried out to apply Logical Configuration.It is control to need synchronous and monitoring data
The data of operation, that is, operate in the input of software logic (such as foregoing rest-set flip-flop) in control station and the number of output end in system station
According to.Application software logic in control station is used to realize control or the defencive function of nuclear power station.Wherein, the data that need to be monitored i.e. RS
The data of the output end of trigger, Z triggers, self-sustaining or time delay logic, the purpose of monitoring is to determine that two control stations are
It is no consistent, if inconsistent, it is necessary to carry out data syn-chronization operation.The input that synchronous data are above logic is needed, by same
The method for walking (such as compulsive means, i.e. assignment) input, reaches the consistent purpose of output data.
Illustrated by taking rest-set flip-flop logic as an example below.First, during parallel redundancy control station configuration, by rest-set flip-flop
R ends and S ends are done or logic with configuration definition point IN1 and IN2 respectively；Secondly, two output end results of control station are read, is carried out
Compare, if inconsistent, it is necessary to synchronize；Again, the output valve of the control station according to non-failure, forces the control station of failure
Input point IN1 or IN2, force to be namely IN1 and IN2 assignment, so that the output of two control stations is consistent.For example, IN1 and
IN2 assignment 0 or 1.Wherein, the result that specific force values can be exported according to the control station of non-failure, by redundant synchronization instrument
Configuration file realize.Finally, the pressure to the control station of failure is released.
In step S220, the first variable value and the failure online of at least one variable of the control station of non-failure are obtained
Second variable of the relevant variable of control station is worth online.
According to an exemplary embodiment of the present, step S220 may include：According to reduced parameters's list obtain for need into
Value and contrast become the first variable of each variable of the control station of non-failure online in reduced parameters's list of the variable that row is compared
The second variable of the relevant variable of the control station of failure is worth online in amount list.
In actual applications, the process for setting up above-mentioned reduced parameters's list is generally completed in factory.Correspondingly, the data
Synchronous method can also include：The respective variable information of multiple control stations is obtained, and sets up right according to the variable information for getting
Compare variable list.
Here, variable information may include, but be not limited at least one of：Data name, data type and online value.
In step S230, by by the first variable of each at least one variable of the control station of non-failure online value and
The online value of second variable of the relevant variable of the control station of failure is compared, and determines data to be synchronized.
In step S240, data transmission channel is set up with the control station of failure, and based on the data transmission channel set up, it is right
Data to be synchronized carry out data syn-chronization.
Wherein, content is identical the step of step S130 with above-described embodiment one for the step of above-mentioned steps S240 contents,
This is repeated no more.
In step S250, turn-off data transmission channel, and release the bypass state residing for the control station of failure.
Below in conjunction with specific processing example, come further that more intuitively illustratively the embodiment of the present invention specifically should
With.
Assuming that the control station of failure is Target Station, the control station of non-failure is reference station.Bypass Target Station after, Target Station with
Service engineer station communication connection, service engineer station is equipped with redundant synchronization instrument, and the workflow of the redundant synchronization instrument is
Perform the method flow of the present embodiment.FE field engineering teacher personnel log in, input project file path, user's name and close
Code, lookup user right information correctly parses project file afterwards in database.After parsing is correct, run on service engineer station
System can return to all control stations.FE field engineering's teacher personnel selection reference station and Target Station, system can load reference station
With the respective variable information of Target Station, the online value of variable is included on interface.According to reference station and the respective change of Target Station
Amount information, selects the variable for needing contrast so as to set up reduced parameters's list, exemplarily, following table from reference station and Target Station
1 is reduced parameters's list.
Table 1
Referring to table 1, the variable in reduced parameters's list is foregoing data (the i.e. number of the output end of logic that need to be monitored
According to), each variable can order a name.Such as：HZRIS099MD.FE field engineering teacher personnel can be at service engineer station
" starting monitoring " button is clicked on system interface, two control stations enter monitored state simultaneously, above-mentioned reduced parameters's row can be shown
The online value of the variable of contrast is needed in table.Now, " data syn-chronization button " is clicked on, according to patrolling for being configured in algorithmic block configuration file
Volume, the inconsistent part of synchronous comparing result, until all inconsistent parts all synchronously complete.If clicking on " stopping monitoring "
Button, reference station and Target Station all terminate the communication with redundant synchronization instrument.
Method of data synchronization provided in an embodiment of the present invention, on the basis of previous embodiment, also imitates with following technology
Really：
On the one hand, by setting up reduced parameters's list, and the change of the control station of non-failure is obtained according to reduced parameters's list
The variable of the relevant variable of the control station of the online value of amount and failure is worth online, so as to accurately determine out data to be synchronized；
On the other hand, in the present embodiment, turn-off data transmission channel after data syn-chronization, and release the control of failure
Bypass state residing for standing, it is ensured that the control station of failure recovers normal operation；
Another further aspect, by the way that before data syn-chronization, data that need to be synchronous respective to multiple control stations carry out variable and determine
Justice, for follow-up data synchronizing step provides technical foundation；
Another aspect, only sets up data transmission channel with the control station of failure, and the control station with non-failure is not direct
It is connected, so as to ensure that the safe operation of control station.
Embodiment three
Based on identical technology design, Fig. 3 is the box of the data synchronization unit for showing according to embodiments of the present invention three
Figure.May be used to perform the method for data synchronization flow as described in embodiment one.
Reference picture 3, data synchronization unit is used for the dcs of nuclear power station, the dcs of nuclear power station
Multiple control stations including being configured as parallel redundancy, the data synchronization unit includes：Control station lock modules 310, variable ratio
To module 320 and Path Setup and data simultaneous module 330.
Control station lock modules 310 are used for after any control station fault recovery, by the dcs of nuclear power station
The control station of middle failure carries out output locking, so that the control station of failure is in bypass state.
Variable comparing module 320 is used to enter the variable of the control station of failure with the variable of the control station of selected non-failure
Row is compared, and determines data to be synchronized.
Path Setup and data simultaneous module 330, data transmission channel is set up for the control station with failure, and based on building
Data to be synchronized are carried out data syn-chronization by vertical data transmission channel.
Data synchronization unit provided in an embodiment of the present invention, by after any control station fault recovery, by the control of failure
Station processed carries out output locking, so that the control station of failure is in bypass state；Further by the variable of the control station of failure and choosing
The variable of the control station of fixed non-failure is compared, and determines data to be synchronized；Based on the number that the control station with failure is set up
According to transmission channel, data syn-chronization is carried out to data to be synchronized.It is achieved thereby that accurately and reliably by data syn-chronization to failure
Control station, it is simple to operate, while ensure that the security and availability of dcs.Additionally, need not between control station
Means of communication, further improves dcs reliability of operation.
Example IV
Based on identical technology design, Fig. 4 is the box of the data synchronization unit for showing according to embodiments of the present invention four
Figure.May be used to perform the method for data synchronization flow as described in embodiment two.
Reference picture 4, specifically, variable comparing module 320 can include：
Variable is worth the first variable that acquiring unit 3201 is used at least one variable of the control station for obtaining non-failure online
Second variable of the relevant variable of the control station of online value and failure is worth online.
Synchrodata determining unit 3202 is used for by by the first of each at least one variable of the control station of non-failure
The online value of second variable of the relevant variable of the control station of the online value of variable and failure is compared, and determines number to be synchronized
According to.
Wherein, variable is worth acquiring unit 3201 and can be carried out for needs specifically for being obtained according to reduced parameters's list online
The first variable of each variable of the control station of non-failure is worth and reduced parameters online in reduced parameters's list of the variable of comparison
The second variable of the relevant variable of the control station of failure is worth online in list.
Further, the data synchronization unit may also include：Passage disconnects and bypass releases module 340 and is used for turn-off data
Transmission channel, and release the bypass state residing for the control station of failure.
Alternatively, the data synchronization unit also includes：List sets up module (not shown) for obtaining multiple controls
Stand respective variable information, and reduced parameters's list is set up according to the variable information for getting.
Preferably, variable information may include, but be not limited at least one of：Data name, data type and online value.
Further, the data synchronization unit also includes：Variable-definition module (not shown) is used to control multiple
The respective data for needing synchronization in system station carry out variable-definition.
Here, needing synchronous data may include the data of following at least one logical transport：Rest-set flip-flop, Z triggers, from
Keep logical sum delayer, but not limited to this.
Data synchronization unit provided in an embodiment of the present invention, on the basis of previous embodiment, also imitates with following technology
Really：First, by setting up reduced parameters's list, and it is worth online according to the variable of the control station of reduced parameters's list non-failure of acquisition
And the variable of the relevant variable of the control station of failure is worth online, so as to accurately determine out data to be synchronized；Second, at this
In embodiment, turn-off data transmission channel after data syn-chronization, and release the bypass state residing for the control station of failure, it is ensured that
The control station of failure recovers normal operation；3rd, by before data syn-chronization, it is respective to multiple control stations need it is synchronous
Data carry out variable-definition, for follow-up data synchronizing step provides technical foundation.
It may be noted that the need for according to implementation, each step/part described in this application can be split as into more multistep
Suddenly/part, also can be combined into new step/part by the part operation of two or more step/parts or step/part,
To realize the purpose of the present invention.
Above-mentioned the method according to the invention can be realized in hardware, firmware, or be implemented as being storable in recording medium
Software or computer code in (such as CD ROM, RAM, floppy disk, hard disk or magneto-optic disk), or it is implemented through network download
Original storage in long-range recording medium or nonvolatile machine readable media and by the meter in being stored in local recording medium
Calculation machine code, so that method described here can be stored in uses all-purpose computer, application specific processor or programmable or special
With the such software processing in the recording medium of hardware (such as ASIC or FPGA).It is appreciated that computer, processor, micro-
Processor controller or programmable hardware include storing receive software or the storage assembly of computer code (for example, RAM,
ROM, flash memory etc.), when the software or computer code are by computer, processor or hardware access and execution, realize herein
The processing method of description.Additionally, when all-purpose computer accesses the code for the treatment for realizing being shown in which, the execution of code
All-purpose computer is converted into the special-purpose computer for performing the treatment being shown in which.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (16)
1. a kind of method of data synchronization, for the dcs of nuclear power station, the dcs of the nuclear power station
Multiple control stations including being configured as parallel redundancy, methods described includes：
After any control station fault recovery, the control station of failure in the dcs of the nuclear power station is carried out
Output locking, so that the control station of the failure is in bypass state；
The variable of the control station of failure is compared with the variable of the control station of selected non-failure, number to be synchronized is determined
According to；
Data transmission channel is set up with the control station of the failure, and based on the data transmission channel set up, is treated to described
Synchronous data carry out data syn-chronization.
2. method according to claim 1, it is characterised in that the variable of the control station by failure and it is selected not therefore
The variable of the control station of barrier is compared, and determines that data to be synchronized include：
Obtain the online value of the first variable and the control station of the failure of at least one variable of the control station of the non-failure
The second variable of relevant variable be worth online；
It is worth online and the event by by the first variable of each at least one variable of the control station of the non-failure
The online value of second variable of the relevant variable of the control station of barrier is compared, and determines the data to be synchronized.
3. method according to claim 2, it is characterised in that at least one of the control station of non-failure described in the acquisition
The online value of second variable of the relevant variable of the control station of the online value of the first variable of variable and the failure includes：
The control of non-failure described in reduced parameters's list of the variable compared for needs is obtained according to reduced parameters's list
The relevant variable of the control station of failure described in the online value of first variable of each variable at system station and reduced parameters's list
The second variable be worth online.
4. method according to claim 1, it is characterised in that in the control station based on the failure and engineer station
Between set up data transmission channel, the data to be synchronized are carried out after data syn-chronization, also include：
Disconnect the data transmission channel, and release the bypass state residing for the control station of the failure.
5. method according to claim 3, it is characterised in that methods described also includes：
The respective variable information of the multiple control station is obtained, and reduced parameters's row are set up according to the variable information for getting
Table.
6. method according to claim 5, it is characterised in that the variable information includes at least one of：Data name
Title, data type and online value.
7. the method according to any one of claim 1-6, it is characterised in that described in any control station failure
After recovery, before the control station of failure in the dcs of nuclear power station is bypassed, also include：
The data for needing synchronization respective to the multiple control station carry out variable-definition.
8. method according to claim 7, it is characterised in that described to need the synchronous data to include following at least one logic
The data of transmission：Rest-set flip-flop, Z triggers, self-sustaining logical sum delayer.
9. a kind of data synchronization unit, for the dcs of nuclear power station, the dcs of the nuclear power station
Multiple control stations including being configured as parallel redundancy, described device includes：
Control station lock modules, for after any control station fault recovery, by the distributed AC servo system system of the nuclear power station
The control station of failure carries out output locking in system, so that the control station of the failure is in bypass state；
Variable comparing module, for the variable of the control station of failure to be compared with the variable of the control station of selected non-failure
It is right, determine data to be synchronized；
Path Setup and data simultaneous module, data transmission channel is set up for the control station with the failure, and based on foundation
The data transmission channel, data syn-chronization is carried out to the data to be synchronized.
10. device according to claim 9, it is characterised in that the variable comparing module includes：
Variable is worth acquiring unit online, and the first variable of at least one variable of the control station for obtaining the non-failure is online
Second variable of the relevant variable of the control station of value and the failure is worth online；
Synchrodata determining unit, for by by the first of each at least one variable of the control station of the non-failure
The online value of second variable of the relevant variable of the control station of the online value of variable and the failure is compared, it is determined that described treat same
The data of step.
11. devices according to claim 10, it is characterised in that the variable is worth acquiring unit for according to contrast online
Variable list obtains each variable of the control station of non-failure described in the reduced parameters's list for being directed to the variable for needing to compare
The first variable second variable of relevant variable of the control station of failure exists described in value and reduced parameters's list online
Line value.
12. devices according to claim 9, it is characterised in that described device also includes：
Passage disconnects and bypass releases module, for disconnecting the data transmission channel, and releases the control station of the failure
Residing bypass state.
13. devices according to claim 11, it is characterised in that described device also includes：
Module is set up in list, for obtaining the respective variable information of the multiple control station, and according to the variable information for getting
Set up reduced parameters's list.
14. devices according to claim 13, it is characterised in that the variable information includes at least one of：Data
Title, data type and online value.
15. device according to any one of claim 9-14, it is characterised in that described device also includes：
Variable-definition module, for carrying out variable-definition to the respective data for needing synchronization of the multiple control station.
16. devices according to claim 15, it is characterised in that described to need synchronous data to be patrolled including following at least one
Collect the data of transmission：Rest-set flip-flop, Z triggers, self-sustaining logical sum delayer.
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