CN108279852A - Method for improving NORFLASH service lifes in intelligent electric energy meter - Google Patents
Method for improving NORFLASH service lifes in intelligent electric energy meter Download PDFInfo
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- CN108279852A CN108279852A CN201711446814.8A CN201711446814A CN108279852A CN 108279852 A CN108279852 A CN 108279852A CN 201711446814 A CN201711446814 A CN 201711446814A CN 108279852 A CN108279852 A CN 108279852A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 241001269238 Data Species 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 8
- 238000013500 data storage Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Read Only Memory (AREA)
Abstract
The invention discloses a kind of methods for improving NORFLASH service lifes in intelligent electric energy meter, include the following steps：Sector divides, and sector is divided into N number of sliding sector and buffer sectors, the round numbers of N >=1；Data are written, and first sliding sector is write data into after wiping first sliding sector, erasing and the data write-in of next sliding sector are carried out after writing completely successively, until being filled with all sliding sectors；The startup of buffer sectors wipes buffer sectors before new data is written；New data is written, and writes new data into buffer sectors, until being filled with entire buffer sectors；Data are deleted, and the data in first sector are deleted；Current latest data write-in, repeats step 25 and latest data is written in sector.Present invention reduces the erasing times of sector, the time of every data write-in is saved, a traditional sector is avoided and how many data write must undergo the reading rewriting of the entire sector of this how many times and nuzzle up journey so that entire NORFLASH service lifes greatly improve.
Description
Technical field
The invention belongs to technical field of power systems, and in particular to one kind carries in being realized for intelligent electric energy meter load record
The method of high NORFLASH service lifes.
Background technology
In order to effectively record data in intelligent electric meter, need that corresponding storage load record is arranged in electric energy meter.Needle at present
Load record storage to intelligent electric meter, national grid is " load record to the load record memory requirement of intelligent electric energy meter
Memory space should at least ensure record forward and reverse active total electric energy, idle total electric energy, four-quadrant is idle and interval time be 1 point
40 days data volumes are no less than in the case of clock ".Amount of storage calculates as follows：32*24*60*40=1843200B=1.76M therefore
The general NORFLASH chips for selecting 4M capacity can meet above-mentioned memory requirement.And NORFLASH write the characteristics of data be
Data are wiped before writing data, and the minimum data block of its operation is 1 sector, therefore mostly use side below in the prior art
Method is handled：
The data first read in original block or sector are gone to ram buffer, are then revised as new data, and state's net provides
Load record data will ensure that newest N datas can be read at any time, therefore often write a data and be intended to original sector first
In data reading backup in RAM, after having changed a data in RAM, wipe that sector, then amended data are read
Go out to be written in RAM and go repeatedly, until the new data in entire sector is write completely.
But the above method often writes a data in this way, is just subjected to read (NORFLASH) -- changing (RAM) -- wiping
(NORFLASH) -- (NORFLASH) process is write, the writeable how many data in sector must undergo this how many times and read -- changing --
Write -- it wipes, namely how many times is wiped to NORFLASH, therefore read, change, writing, wiping and do not only take up regular hour and space, it more can be right
The erasing and writing life of the limit 100,000 times of NORFLASH can cause damages.
Invention content
The purpose of the present invention is to solve the above problems, provide during one kind is realized for intelligent electric energy meter load record and carry
The method of high NORFLASH service lifes can be greatly decreased the number of the sectors erasing NORFLASH, improve making for NORFLASH
Use the service life.
In order to reach foregoing invention purpose, the present invention uses following technical scheme：
Method for improving NORFLASH service lifes in intelligent electric energy meter, includes the following steps：
1, sector divides, and sector is divided into N number of sliding sector and buffer sectors, the round numbers of N >=1；
2, data are written, and first sliding sector is write data into after wiping first sliding sector, write it is full after successively into
The erasing and data write-in of the next sliding sector of row, until being filled with all sliding sectors；
3, the startup of buffer sectors wipes buffer sectors before new data is written；
4, new data is written, and writes new data into buffer sectors, until being filled with entire buffer sectors；
5, data are deleted, and delete the data in first sector；
6, current latest data write-in repeats step 2-5 and latest data is written in sector.
Further, the step 1 further includes, and initializes NORFLASH, head pointer Head and tail pointer Tail are set to-
1, first sector of data will be written in erasing.
Further, the step 2 specifically includes, and S1, setting head pointer Head are 0, tail pointer Tail is n, the roundings of n >=1
Number；Data are not filled with also, do not recycle storage, until data write completely all sliding sectors.
Further, the step 2 further includes, S2, after data write completely all sliding sectors, and setting head pointer Head is
1, setting tail pointer Tail is the last item data MAX'sNext positionThat is MAX+1.
Further, the step 3 includes wiping and starting buffer sectors, willNew dataBuffer sectors are written to, until
The data storage of buffer sectors is full, and setting head pointer Head is n, and tail pointer Tail is Head+Max.
Further, the step 6 is specifically, write-in latest data to the first sector, is often written one, accordingly end to end
Pointer also moves down a position therewith.
Further, the buffer sectors are on-fixed sector, are to slide sector relative to occupied by newest MAX datas
Except another sector.
Further, any one described sliding sector, the storage size of buffer sectors are identical.
Further, the data of any one sliding sector storage are load record data, the load record data
For same type or different type.
Further, the data of the alternate sector storage are load record data, and the load record data are same class
Type or different type.
Compared with prior art, the present invention advantageous effect is：
1. reducing the erasing times of sector, traditional data record often writes a data and is required for wiping primary entire
The sectors NORFLASH, and the present invention is used for a plurality of data in the same sector of write-in, as long as wiping a NORFLASH
Row；
2. saving the time of every data write-in, the time used greatly shortens the process for be written per data more
Simply, the write-in of single data needs multiple steps for wiping-write by read-alter-in traditional approach, using the present invention for
The write-in of arbitrary a data in the same sector of NORFLASH only needs to wipe primary, a plurality of data dependence before writing
According to sequentially writing direct until writing the sector at completely entire place just, the single data write-in time used greatly shortens；
3. avoiding a traditional sector writes that how many data must undergo the reading of the entire sector of this how many times -- changing --
Write -- journey of nuzzling up so that entire NORFLASH service lifes greatly improve；
4. the newest several load record data of division Coutinuous store according to each sector, meet national grid requirement
The requirement of newest several numbers load record data can be read by the load record period at any time so that memory space has obtained very well
Utilization.
Description of the drawings
Fig. 1 is the main-process stream schematic diagram of the write-in sector of the load record data of the present invention.
Fig. 2 is that the NORFLASH of the present invention initializes schematic diagram.
Fig. 3 is the storage section schematic diagram data of the present invention.
Fig. 4 is that the data of the present invention are filled with space enabling buffer sectors schematic diagram.
Fig. 5 is that the buffer sectors of the present invention initialize schematic diagram.
Fig. 6 starts the cycle over record schematic diagram for the present invention's.
Fig. 7 is the schematic diagram of the embodiment of the present invention 2.
Specific implementation mode
Explanation is further described to technical scheme of the present invention below by specific embodiment.
Embodiment 1
Present embodiment discloses a kind of method for improving NORFLASH service lifes in intelligent electric energy meter, entire methods
Flow chart as shown in Figure 1, including the following steps：
1. sector is divided into several sliding sectors and buffer sectors, NORFLASH is first initialized, and by head pointer
Head and tail pointer Tail is set to -1, and first sector of data, data, that is, writable, the step such as Fig. 2 will be written in erasing
It is shown；
2. when data also do not write full designated sector number, head pointer Head is 0 (being directed toward the first data), tail pointer Tail
For n (being directed toward nth bar data), the round numbers of n >=1 when data are not filled with also, does not recycle storage, and the step is as shown in Figure 3；
3. when data write full designated sector number, head pointer Head is 1 (the first data for being directed toward current state), and tail refers to
Needle Tail is next position of (current state) the last item data MAX, i.e. MAX+1, data, which have been write, at this time expires last
A sector starts buffer sectors, i.e. alternate sector, buffer sectors is wiped before new data is written.The step is as shown in Figure 4；
4. data are persistently written to buffer sectors, until the data storage of buffer sectors is full, head pointer Head is that n (is directed toward
The first data under current state), tail pointer Tail is Head+Max (being directed toward the last item data under current state).It should
Step is as shown in Figure 5；
5. buffer sectors are recycled with first sector formation sequence, former first sector data is wiped, write-in new data to the
One sector is often written one, and pointer also moves down a position therewith end to end accordingly；In this way, load record data start the cycle over
Storage.The step is as shown in Figure 6.
Data write-in in above-mentioned steps 2 writes data into first sliding fan after wiping first sliding sector first
Area is filled with first sliding sector；Then N number of sliding sector is wiped and is written one by one successively, until being filled with entire sliding sector.
The present embodiment solves the problems, such as that traditional single data storage just needs single to wipe entire sector, avoids and deposits every time
Sector erasable serious the problem of reducing the service life repeatedly when storing up a data, using the method for " sliding sector+alternate sector ",
Specifically using memory space=+ 1 sector of data occupancy sector number is opened up, there are one sectors forever when such datacycle stores
Spare, after the sector is filled with can storage of the entire sector erasing without influencing normal data, while in storage data
Shi Caiyong end to end move to ensure newest N items (round numbers of N >=1) data of storage by the corresponding of pointer.Especially to illustrate that
The spare sector is not fixed a certain sector, be relative to another sector except sector occupied by newest N datas,
Its essence is buffer sectors, are judged new and old sector with the movement of pointer end to end and relationship, often detect old sector and are remained with
When newest N items (round numbers of N >=1) data, then often wiped once before carrying out write-in new data to old sector.In addition, all
The sector i.e. size of the memory space of any one sliding sector and alternate sector is the same.And any one sliding sector
Load record data with alternate sector can be of a sort, can also be inhomogeneous.
Embodiment 2
Concrete numerical value example explanation is lifted, referring to Fig. 7 embodiment schematic diagrams, with using the NORFLASH cores of MX25L3206EM2I
Piece, it is assumed that by taking the load record of the total electric energy of the presence or absence of three-phase intelligent electric-energy meter work(as an example, 16Byte, the core are occupied per data
The total memory space of piece is 4096K Bytes, is made of 1024 sectors, and the capacity of each sector is 4096Bytes, then a fan
Area can store 4096/16=256 datas, and assume that state's net requires such data that should be able to store newest 512 load records, because
It is 512/256=2 sector that sector is opened up needed for this.
256 new datas are such as written again after writing full 512 datas, is calculated, is then needed altogether by original technology method
It is 2+256=258 times to wipe the sectors NORFLASH, and the method for using the invention uses buffer sectors, then wipes altogether
The sectors NORFLASH only need 3 times, and erasing times are the 3/258=1/86 of original technology, greatly reduce NORFLASH fans
The erasing times in area, to improve the service life of NORFLASH.
It is above the preferred embodiment of the present invention, protection scope of the present invention is not limited, for people in the art
The deformation and improvement that member's mentality of designing according to the present invention is made, all should be considered as within protection scope of the present invention.
Claims (10)
1. the method for improving NORFLASH service lifes in intelligent electric energy meter, includes the following steps：
1, sector divides, and sector is divided into N number of sliding sector and buffer sectors, the round numbers of N >=1；
2, data are written, and write data into first sliding sector after wiping first sliding sector, are carried out down successively after writing completely
One erasing for sliding sector and data write-in, until being filled with all sliding sectors；
3, the startup of buffer sectors wipes buffer sectors before new data is written；
4, new data is written, and writes new data into buffer sectors, until being filled with entire buffer sectors；
5, data are deleted, and delete the data in first sector；
6, current latest data write-in repeats step 2-5 and latest data is written in sector.
2. the method according to claim 1 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In the step 1 further includes initializing NORFLASH, head pointer Head and tail pointer Tail is set to -1, erasing will be written
First sector of data.
3. the method according to claim 1 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In, the step 2 specifically includes,
S1, setting head pointer Head are 0, tail pointer Tail is n, the round numbers of n >=1；Data are not filled with also, do not recycle storage, directly
Completely all sliding sectors are write to data.
4. the method according to claim 3 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
Further include in, the step 2,
S2, after data write completely all sliding sectors, setting head pointer Head is 1, and setting tail pointer Tail is the last item number
According to next position, that is, MAX+1 of MAX.
5. the method according to claim 4 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In the step 3 includes wiping and starting buffer sectors, is write new data into buffer sectors, until the data of buffer sectors
Storage is full, and setting head pointer Head is n, and tail pointer Tail is Head+Max.
6. according to any methods for improving NORFLASH service lifes in intelligent electric energy meter of claim 1-5,
Be characterized in that, the step 6 specifically, write-in latest data is often written one to the first sector, accordingly end to end pointer also with
Move down a position.
7. the method according to claim 5 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In the buffer sectors are on-fixed sector, are relative to another fan slided occupied by newest MAX datas except sector
Area.
8. the method according to claim 1 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In any one described sliding sector, the storage size of buffer sectors are identical.
9. the method according to claim 1 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In, it is described any one sliding sector storage data be load record data, the load record data be same type or
Different type.
10. the method according to claim 1 for improving NORFLASH service lifes in intelligent electric energy meter, feature exists
In the data of the alternate sector storage are load record data, and the load record data are same type or different type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711446814.8A CN108279852A (en) | 2017-12-27 | 2017-12-27 | Method for improving NORFLASH service lifes in intelligent electric energy meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597580A (en) * | 2018-12-03 | 2019-04-09 | 烟台东方威思顿电气有限公司 | Flash operating method suitable for the storage of intelligent electric meter load curve |
| CN111208950A (en) * | 2020-01-15 | 2020-05-29 | 山西银河电子设备厂 | Method for improving NORFLASH service cycle based on single chip microcomputer |
| CN115470216A (en) * | 2022-11-01 | 2022-12-13 | 安徽南瑞中天电力电子有限公司 | FTL-based intelligent Internet of things table storage management method and storage medium |
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| CN109597580A (en) * | 2018-12-03 | 2019-04-09 | 烟台东方威思顿电气有限公司 | Flash operating method suitable for the storage of intelligent electric meter load curve |
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| CN115470216A (en) * | 2022-11-01 | 2022-12-13 | 安徽南瑞中天电力电子有限公司 | FTL-based intelligent Internet of things table storage management method and storage medium |
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