CN106326029A - Data storage method for electric power meter - Google Patents
Data storage method for electric power meter Download PDFInfo
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- CN106326029A CN106326029A CN201610654545.3A CN201610654545A CN106326029A CN 106326029 A CN106326029 A CN 106326029A CN 201610654545 A CN201610654545 A CN 201610654545A CN 106326029 A CN106326029 A CN 106326029A
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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
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1048—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using arrangements adapted for a specific error detection or correction feature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
-
- 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
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
The invention discloses a data storage method for an electric power meter. A memory is divided into a main storage data region and a backup storage data region; in addition, a plurality of storage data modules with the identical byte length are divided; data of each storage data module contains a data region and a check code; when the data is read, the data of the data region and the check code of the main storage data block are firstly read out; when the check data is correct, the read-out data is output; otherwise, the data of the data region and the check code of the backup storage data region are read out; when the check data is correct, the read-out data is output; otherwise, the read-out error information is output; during data storage, the storage data is read by the method; the storage data is written into the corresponding position of the data of the data region; then, the check data of the data of the data region is calculated; then, the data of the data region and the check data form one data block to be stored in the main storage data block and the backup storage data block. Compared with a triple module redundant data storage method, the method has the advantage that the space utilization rate of the memory is higher.
Description
Technical field
The present invention relates to electrotechnical measurement technology technical field, especially relate to a kind of data storage side for electric instrument
Method.
Background technology
Electric instrument is used for the power consumption of measuring power user, and as the important evidence of electricity consumption charging, therefore, electric power instrument
The storage of power consumption data in table, meter parameter, logout etc. data, it is desirable to there is the highest reliability.
As shown in fig. 1, conventional high reliability data storage method has triple redundance data to store, and data are stored in three
Memory block, when reading data every time, first reads the data of three memory blocks, then obtains data by voting machine, for triple redundance
Data-storage system, when there being the corrupted data of a data field, does not affect the correctness obtaining data, data storage needs 3
Times memory space, the utilization rate of memorizer is relatively low.
Application publication number is that the patent of invention " a kind of electric quantity data storage method of electric energy meter " of CN105334383A is open
A kind of date storage method, is respectively stored in the check code of data block and data block two memory blocks, reads data every time
Time, first read data block and the check code thereof of a data field, and data are verified, if verification is correct, output is read
Data, if check errors, then read data block and the check code thereof of second data field, and verify data block, if school
Test the data that second data field of correct then output is read, if verification check errors, export reading data error message.Using should
During date storage method, if having the corrupted data of a data field, not affecting the correctness obtaining data, data storage needs
2 times of memory spaces, compared with triple redundance date storage method, the patent of invention " electricity of a kind of electric energy meter of CN105334383A
Amount date storage method " the utilization rate of memorizer higher than above-mentioned triple redundance date storage method, and have the highest
Reliability.
Due to the data in electric instrument, in addition to electric quantity data, the data such as parameter and logout are also set and all attach most importance to
Wanting data, it is also desirable to have the storage of high reliability, the size of the data block of each kind differs, and some data block only has 2
Individual byte, only has 2 bytes as data are designated 04000801 and 04000802 data block formed, according to
The storage method described in patent of invention " a kind of electric quantity data storage method of electric energy meter " of CN105334383A, such as number
According to the parameter of a length of 4 bytes, if check code is 1 byte, the space availability ratio of the most total memorizer is: 4/ [(4+1) x2]
=0.4=40%, compares close with space availability ratio 1/3=0.333=33% of triple redundance date storage method, and its reason is
Check code occupies too much space, thus reduces the utilization rate of memorizer.Even current forward active energy data
Block, also due to the time-division charge rate number that used is different and the size of data block is the most different, when using 4 rate, current forward has
The data length of merit electric energy data block is 20 bytes, and when rate number is 63 rate, current forward active energy data
The data length of block is 256 bytes, therefore the utilization rate of its memorizer with data block vary in size and different.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, technical problem to be solved is to provide a kind of number for electric instrument
According to storage method, reliability high as having with triple redundance date storage method, and have than triple redundance data storage side
The utilization rate of the higher memorizer of method.
The present invention is to make above-mentioned technical problem be addressed by the following technical programs.
The first technical scheme that the present invention is taked, a kind of date storage method for electric instrument, including following step
Rapid:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: equal by being divided into several byte lengths in main memory data region and backup storage data area
Storage data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is
Main memory data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in main memory
Storage data block and backup storage data block；
Step 3: the packet of each storage data block contains data field and check code, check code is the cumulative of Data Area data
With, whether check code has damage for the data verifying the data field of this storage data block；
Step 4: when reading data, first reads Data Area data and check code, the calculation data area number of main memory data block
According to cumulative and and compare with check code, if identical, think that to read data correct and by defeated for the Data Area data that reads
Go out, otherwise it is assumed that the Data Area data of main memory data block damages, read when the Data Area data of main memory data block damages
The backup storage Data Area data of data block and check code, calculation data area data cumulative and and compare with check code,
If identical, think and read the Data Area data output that data are correct and will read, otherwise it is assumed that the data of backup storage data block
District's corrupted data, and export readout error information；
Step 5: during storage data, the first data field of the storage data block as corresponding to step 4 reads storage data address
Data, it would be desirable to the relevant position of the data write storage of storage Data Area data corresponding to data address, then calculate number
According to the cumulative of district's data and check code, then Data Area data and cumulative and check code one data block of composition are stored in primary storage
In data block and backup storage data block.
The second technical scheme that the present invention is taked, a kind of date storage method for electric instrument, including following step
Rapid:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: equal by being divided into several byte lengths in main memory data region and backup storage data area
Storage data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is
Main memory data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in main memory
Storage data block and backup storage data block；
Step 3: the packet of each storage data block contains bebinning character, data field, check code, termination character, check code
For the cumulative of Data Area data and, whether check code has damage for the data verifying the data field of this storage data block, initiates
Character and termination character are for judging that this storage data block is whether by the mistake write operation of other write operation；
Step 4: when reading data, first reads the total data of main memory data block, calculation data area data cumulative and
And compare with check code, if identical and bebinning character and termination character do not change, think that reading data correctly and will be read
The Data Area data output taken, otherwise it is assumed that the Data Area data of main memory data block damages, when the data of main memory data block
The total data of backup storage data block is read, calculation data area data cumulative and and carrying out with check code during district's corrupted data
Relatively, if identical and bebinning character and termination character do not change, think and read the Data Area data that data are correct and will read
Output, otherwise it is assumed that the Data Area data of backup storage data block damages, and exports readout error information；
Step 5: during data storage, the first data field of the storage data block as corresponding to step 4 reads address data memory
Data, it would be desirable to the relevant position of the data write of storage Data Area data corresponding to address data memory, then calculate number
According to the cumulative of district's data and check code, then by Data Area data, cumulative and check code, bebinning character and termination character composition one
Data block is stored in main memory data block and backup storage data block.
The 3rd technical scheme that the present invention is taked, a kind of date storage method for electric instrument, including following step
Rapid:
Step 1: the memory read/write provided by the 1st technical scheme or the 2nd technical scheme is operated as hardware layer；
Step 2: by re-mapping be by the address data area of the storage data block in each main memory data region of hardware layer
Linear logical layer address；
Step 3: when reading data, goes out data to be read at hardware layer according to the logical layer Address Resolution reading data
Address in each storage data block and data length, the method provided by the 1st technical scheme or the 2nd technical scheme reads number
According to the data in each storage data block, finally these data are spliced, then export data；
Step 4: during data storage, according to data length and the logical layer address of data to be stored, calculates at hardware
Layer storage data block in address and storage data block in storable data length, data to be stored are resolved into many
Individual data block to be stored, will resolve into many according to the date storage method described in the first technical scheme or the second technical scheme
Individual data block to be stored stores in each storage data block.
When using the first technical scheme storage data, when the byte length of storage data block is equal to 64 bytes, and check code is 2
During byte, memorizer utilization rate is: [(64-2)/(16x2)] x100%=48.4%.
When using the first technical scheme storage data, when the byte length storing data block is equal to 64 byte, check code
Being 2 bytes, when 1 byte header character and 1 byte termination character, memorizer utilization rate is: [(64-4)/(64x2)] x100%=
46.8%.
Described on end, far above the memorizer utilization rate of triple redundance date storage method 33.3%.
Sum it up, a kind of date storage method for electric instrument of the present invention, with triple redundance date storage method
There is the highest reliability, and there is the utilization rate of memorizer more higher than triple redundance date storage method.
Accompanying drawing explanation
Fig. 1 is the triple redundance date storage method theory diagram of prior art；
Fig. 2 is the theory diagram of the 1st specific embodiment of the present invention；
Fig. 3 is the theory diagram of the 2nd specific embodiment of the present invention；
Fig. 4 is the theory diagram of the 3rd specific embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described in detail.
Embodiment 1
As shown in Figure 2, a kind of date storage method for electric instrument, comprise the following steps:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: equal by being divided into several byte lengths in main memory data region and backup storage data area
Storage data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is
Main memory data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in main memory
Storage data block and backup storage data block；
Step 3: the packet of each storage data block contains data field and check code, check code is the cumulative of Data Area data
With, whether check code has damage for the data verifying the data field of this storage data block；
Step 4: when reading data, first reads Data Area data and check code, the calculation data area number of main memory data block
According to cumulative and and compare with check code, if identical, think that to read data correct and by defeated for the Data Area data that reads
Go out, otherwise it is assumed that the Data Area data of main memory data block damages, read when the Data Area data of main memory data block damages
The backup storage Data Area data of data block and check code, calculation data area data cumulative and and compare with check code,
If identical, think and read the Data Area data output that data are correct and will read, otherwise it is assumed that the data of backup storage data block
District's corrupted data, and export readout error information；
Step 5: during storage data, the first data field of the storage data block as corresponding to step 4 reads storage data address
Data, it would be desirable to the relevant position of the data write storage of storage Data Area data corresponding to data address, then calculate number
According to the cumulative of district's data and check code, then Data Area data and cumulative and check code one data block of composition are stored in primary storage
In data block and backup storage data block.
The byte length of storage data block is 64 bytes, and check code is 2 bytes, and memorizer utilization rate is: [(64-2)/
(64x2)] x100%=48.4%
Embodiment 2
As shown in Figure 3, a kind of date storage method for electric instrument, comprise the following steps:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: equal by being divided into several byte lengths in main memory data region and backup storage data area
Storage data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is
Main memory data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in main memory
Storage data block and backup storage data block；
Step 3: the packet of each storage data block contains bebinning character, data field, check code, termination character, check code
For the cumulative of Data Area data and, whether check code has damage for the data verifying the data field of this storage data block, initiates
Character and termination character are for judging that this storage data block is whether by the mistake write operation of other write operation；
Step 4: when reading data, first reads the total data of main memory data block, calculation data area data cumulative and
And compare with check code, if identical and bebinning character and termination character do not change, think that reading data correctly and will be read
The Data Area data output taken, otherwise it is assumed that the Data Area data of main memory data block damages, when the data of main memory data block
The total data of backup storage data block is read, calculation data area data cumulative and and carrying out with check code during district's corrupted data
Relatively, if identical and bebinning character and termination character do not change, think and read the Data Area data that data are correct and will read
Output, otherwise it is assumed that the Data Area data of backup storage data block damages, and exports readout error information；
Step 5: during data storage, the first data field of the storage data block as corresponding to step 4 reads address data memory
Data, it would be desirable to the relevant position of the data write of storage Data Area data corresponding to address data memory, then calculate number
According to the cumulative of district's data and check code, then by Data Area data, cumulative and check code, bebinning character and termination character composition one
Data block is stored in main memory data block and backup storage data block.
The byte length of storage data block is 64 bytes, and check code is 2 bytes, the stem character 0x68 and of 1 byte
The termination character 0x16 of individual byte, memorizer utilization rate is: [(64-4)/(64x2)] x100%=46.8%.
Embodiment 3
As shown in Figure 4, a kind of date storage method for electric instrument, comprise the following steps:
Step 1: the memory read/write provided by the 1st technical scheme or the 2nd technical scheme is operated as hardware layer；
Step 2: by re-mapping be by the address data area of the storage data block in each main memory data region of hardware layer
Linear logical layer address；
Step 3: when reading data, goes out data to be read at hardware layer according to the logical layer Address Resolution reading data
Address in each storage data block and data length, the method provided by the 1st technical scheme or the 2nd technical scheme reads number
According to the data in each storage data block, finally these data are spliced, then export data；
Step 4: during data storage, according to data length and the logical layer address of data to be stored, calculates at hardware
Layer storage data block in address and storage data block in storable data length, data to be stored are resolved into many
Individual data block to be stored is multiple to be stored by resolving into according to the date storage method described in embodiment 1 or embodiment 2
Data block stores in each storage data block.
The present invention is not limited to above-described preferred implementation, can know based on those skilled in the art
Known technology or use in prior art is caned the various deformation and the embodiment of change that equivalence replaces, every based on
The spirit of invention or technology design, should be included within the scope of the present invention.
Claims (3)
1. the date storage method for electric instrument, it is characterised in that comprise the following steps:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: be divided into, in main memory data region and backup storage data area, the storage that several byte lengths are equal
Data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is for hosting
Storage data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in primary storage number
According to block and backup storage data block；
Step 3: the packet of each storage data block contains data field and check code, check code be the cumulative of Data Area data and,
Whether check code has damage for the data verifying the data field of this storage data block；
Step 4: when reading data, first reads Data Area data and the check code of main memory data block, calculation data area data
Cumulative and and compare with check code, if identical, think and read the Data Area data output that data are correct and will read, no
Then think that the Data Area data of main memory data block damages, read backup when the Data Area data of main memory data block damages and deposit
The storage Data Area data of data block and check code, calculation data area data cumulative and and compare with check code, if identical
Then think and read the Data Area data output that data are correct and will read, otherwise it is assumed that the Data Area data of backup storage data block
Damage, and export readout error information；
Step 5: during storage data, the first Data Area data of the storage data block as corresponding to step 4 reads storage data address,
The data write needing storage is stored the relevant position of the Data Area data corresponding to data address, then calculation data area number
According to cumulative and check code, then Data Area data and cumulative and check code one data block of composition are stored in main memory data block
Store in data block with backup.
2. the date storage method for electric instrument, it is characterised in that comprise the following steps:
Step 1: the memory area of memorizer is divided into main memory data region and backup storage data area；
Step 2: be divided into, in main memory data region and backup storage data area, the storage that several byte lengths are equal
Data block, the byte length of storage data block is more than or equal to 16 bytes, and the storage data block in main memory data region is for hosting
Storage data block, the storage data block of backup storage data area is backup storage data block, and data are stored simultaneously in primary storage number
According to block and backup storage data block；
Step 3: the packet of each storage data block contains bebinning character, data field, check code, termination character, check code is number
According to the cumulative of district's data and, whether check code has damage, bebinning character for the data verifying the data field of this storage data block
With termination character for judging that this storage data block is whether by the mistake write operation of other write operation；
Step 4: when reading data, first reads the total data of main memory data block, calculation data area data cumulative and and with
Check code compares, if identical and bebinning character and termination character do not change, thinks that to read data correct and will read
Data Area data exports, otherwise it is assumed that the Data Area data of main memory data block damages, when the data field number of main memory data block
According to reading the total data of backup storage data block when damaging, calculation data area data cumulative and and comparing with check code
Relatively, if identical and bebinning character and termination character do not change, think that to read data correct and by defeated for the Data Area data that reads
Go out, otherwise it is assumed that the Data Area data of backup storage data block damages, and export readout error information；
Step 5: during data storage, the first Data Area data of the storage data block as corresponding to step 4 reads address data memory,
The data needing storage are write the relevant position of the Data Area data corresponding to address data memory, then calculation data area number
According to cumulative and check code, then by Data Area data, cumulative and check code, bebinning character and termination character one data block of composition
It is stored in main memory data block and backup storage data block.
3. the date storage method for electric instrument, it is characterised in that comprise the following steps:
Step 1: the memory read/write provided by the 1st technical scheme or the 2nd technical scheme is operated as hardware layer；
Step 2: the address data area of the storage data block in each main memory data region of hardware layer is pressed re-mapping is linear
Logical layer address；
Step 3: read data time, according to read data logical layer Address Resolution go out data to be read hardware layer each
Address in storage data block and data length, it is each that the method provided by the 1st technical scheme or the 2nd technical scheme reads data
These data are finally spliced by the data in individual storage data block, then export data；
Step 4: during data storage, according to data length and the logical layer address of data to be stored, calculates and deposits at hardware layer
Storage data block in address and storage data block in storable data length, data to be stored are resolved into multiple want
The data block of storage is multiple to be stored by resolving into according to the date storage method described in claim 1 or claim 2
Data block stores in each storage data block.
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| CN108572883A (en) * | 2017-04-19 | 2018-09-25 | 北京金山云网络技术有限公司 | A kind of data correctness method of calibration and device |
| CN109358981A (en) * | 2018-09-25 | 2019-02-19 | 珠海市杰理科技股份有限公司 | Memory read error correcting method, system, computer equipment and storage medium |
| CN110333387A (en) * | 2019-06-13 | 2019-10-15 | 宁波三星医疗电气股份有限公司 | A kind of electric quantity metering method of electric energy meter |
| CN114242150A (en) * | 2022-02-23 | 2022-03-25 | 石家庄科林电气股份有限公司 | Method for detecting data storage function of electric energy meter |
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| CN109358981B (en) * | 2018-09-25 | 2022-07-05 | 珠海市杰理科技股份有限公司 | Memory read error correction method, system, computer device, and storage medium |
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