CN109521954A - A kind of distribution FTU fixed point file management method and device - Google Patents
A kind of distribution FTU fixed point file management method and device Download PDFInfo
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- G—PHYSICS
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- 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
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- 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
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- G06F3/064—Management of blocks
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- 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
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Abstract
The present invention relates to a kind of distribution FTU fixed point file management method and devices, belong to electric power project engineering field.Data field and temporary file area are established in memory, by fixed-point data storage into data field;When needing send in fixed-point data, the fixed-point data is searched within a data area and in the fixed point file that formats the fixed-point data found, and store into temporary file area, will be sent on the fixed point file by temporary file area.By only storing the dynamic data of needs, disk space occupancy is effectively reduced;And the xml model manipulation for expending very much memory source is converted into the operation directly to memory, the storage and management of fixed-point data is realized with minimum memory overhead, the complexity and resource consumption that file management is reduced under the premise of guaranteeing high performance, effectively reduce product cost.
Description
Technical field
The present invention relates to a kind of distribution FTU fixed point file management method and devices, belong to electric power project engineering field.
Background technique
FTU, that is, Feeder Terminal Unit, feeder terminal unit.With remote control, remote signalling, fault detection capability, and
It is communicated with power distribution automation main station, distribution system operating condition and various parameters is provided and monitor control information needed.In order to just
It is parsed in main website, fixed-point data and other data, such as fixed-point data, SOE data, remote-control data, reverse power frozen value number
According to, daily record data, extreme value data, freeze electric energy data day etc., be the format Shang Song main website with xml document.FTU belongs to embedding
Entering formula, low-power consumption, low cost device, storage resource especially memory source only has several hundred KB, and it is very limited, if directly pressing xml
Format operation file, when read-write, can occupy biggish memory headroom, can also occupy a large amount of memory spaces, resource in storage to medium
Consumption also adds the complexity of file management while increasing, so that product cost rises.Therefore, it is badly in need of a kind of FTU fixed point
File management method occupies that a large amount of memories, file management complexity are high to ask to solve file management process in the prior art
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of distribution FTU fixed point file management method and devices, for solving existing skill
File management process in art occupies the high problem of a large amount of memories, file management complexity.
To achieve the above object, the technical solution of the present invention is as follows:
The present invention provides a kind of distribution FTU to pinpoint file management method, includes the following steps:
1) data field and temporary file area are established in memory, by fixed-point data storage into data field;
2) when needing send in fixed-point data, the fixed-point data searching the fixed-point data within a data area and will find
It, will be on the fixed point file by temporary file area in the fixed point file for formatting, and storing into temporary file area
It send.
By establishing data field and temporary file area in memory in the present invention, by the dynamic number for only storing needs
According to effectively reducing the occupancy of disk space, and the xml model manipulation for expending very much memory source is converted to directly to depositing
The storage and management of fixed-point data is realized in the operation of reservoir with minimum memory overhead, is reduced under the premise of guaranteeing high performance
The complexity and resource consumption of file management, effectively reduces product cost.
Further, the data in FLASH are transferred for convenience, does not use file system, in blocks directly
Operation memory is connect, disk fragments will not be generated, the data field is divided into an information data block and N number of file data blocks,
Daily fixed-point data occupies a file data blocks, and each file data blocks are used to store fixed-point data, each entry by entry
The attribute information of storage file data block, the category are used for including fixed-point data itself and corresponding acquisition time, information data block
Property information includes the acquisition date of current file data block and has deposited entry number, and the position subscript of attribute information is as each file
The index of data block, N >=1.
Further, carry out by date data transfer and on when sending, for improve data transfer efficiency, when needing to carry out
When being sent in fixed-point data, as needed on send the date of data to search the corresponding number of files of the fixed-point data from information data block
According to the index of block, corresponding file data blocks are found further according to index.
It further, further include the process of CRC check in step 1) in order to improve the accuracy of data management, initialization
When from data field read information data block content and CRC check value into internal storage structure, calculate information data block where memory
The CRC check value of structure compares the CRC check value in the CRC check value and data field of the internal storage structure, if unanimously, then it is assumed that
Data are effective, if inconsistent, illustrate error in data, using default value initialization data area;In memory in information data block
When appearance changes, the CRC check value of internal storage structure is recalculated, and write number together with the information data block content in memory
According to area.
Further, it in order to make fixed-point data monitoring process more be bonded practical application, in step 2), will pinpoint accordingly
Data are converted to xml format, store in the fixed point file of the xml format into temporary file area.
Further, for improve data transfer efficiency, the fixed-point data in temporary file area in a manner of binary stream on
It send.
The present invention also provides a kind of distribution FTU to pinpoint document management apparatus, including memory, memory interface, access connect
Mouth and file conversion module;Data field and temporary file area are established in the memory;What the memory interface was used to acquire
Fixed-point data is transmitted in the data field in memory;The access interface is for receiving the control command sent in fixed-point data;
The file conversion module is used for when needing send in fixed-point data, is searched the fixed-point data within a data area and will be found
The fixed-point data fixed point file that formats, and store into temporary file area in;It the temporary file area will be described
It is sent on fixed point file.
By establishing data field and temporary file area in memory in the present invention, by the dynamic number for only storing needs
According to effectively reducing the occupancy of disk space, and the xml model manipulation for expending very much memory source is converted to directly to depositing
The storage and management of fixed-point data is realized in the operation of reservoir with minimum memory overhead, is reduced under the premise of guaranteeing high performance
The complexity and resource consumption of file management, effectively reduces product cost.
Further, the data in FLASH are transferred for convenience, does not use file system, in blocks directly
Operation memory is connect, disk fragments will not be generated, the data field is divided into an information data block and N number of file data blocks,
Daily fixed-point data occupies a file data blocks, and each file data blocks are used to store fixed-point data, each entry by entry
The attribute information of storage file data block, the category are used for including fixed-point data itself and corresponding acquisition time, information data block
Property information includes the acquisition date of current file data block and has deposited entry number, and the position subscript of attribute information is as each file
The index of data block, N >=1.
Further, carry out by date data transfer and on when sending, for improve data transfer efficiency, when needing to carry out
When being sent in fixed-point data, as needed on send the date of data to search the corresponding number of files of the fixed-point data from information data block
According to the index of block, corresponding file data blocks are found further according to index.
Further, a kind of way of realization of specific fixed point document management apparatus, the memory are in order to obtain
FLASH。
Detailed description of the invention
Fig. 1 is the schematic diagram of the distribution FTU fixed point file management in embodiment of the present invention method;
Fig. 2 is fixed-point data storage format schematic diagram in data field in embodiment of the present invention method.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawing.
The present invention provides a kind of distribution FTU fixed point file management method and device, establish in memory data field and
Temporary file area, by fixed-point data storage into data field;When needing send in fixed-point data, searching within a data area should
In fixed-point data and the fixed point file for formatting the fixed-point data found, and storing into temporary file area, pass through
Temporary file area will be sent on the fixed point file.
Embodiment of the method
Specifically, within one day fixed-point data storage and on pass through journey, fixed point file is xml formatted file, is stored
For device is FLASH, distribution FTU fixed point file management method of the invention is introduced.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.
As shown in Figure 1, memory is FLSAH, data field and temporary file area are established in memory;Memory interface is used for
The fixed-point data of acquisition is transmitted in the data field in memory;Access interface is used to receive the control life sent in fixed-point data
It enables;File conversion module is used for when needing send in fixed-point data, is searched the fixed-point data within a data area and will be found
The fixed-point data fixed point file that formats, and store into temporary file area in;It the temporary file area will be described
It is sent on fixed point file.
According to the standard of FTU industry, every 15 minutes fixed points is generally required to record, daily fixed point file, therefore,
Contain 96 (60/15*24) a entries in one fixed point file, fixed point file number is not less than 31.It is special to guarantee data validity
One file data blocks of redundancy distribute 32 file data blocks altogether.
The storage format of middle entry according to fig. 2, each target structure is defined as:
Table 1
Seen from table 1, each entry occupied space is 1B+3B+36B=40B, and a file data blocks occupied space is
40B*96=3840B.
The storage format of middle information data block according to fig. 2, the structure of information data block is defined as:
Table 2
Field | Type | Space | Description |
crc | unsigned int | 4B | CRC32 value |
sectornums | unsigned char | 1B | Data occupy total block data (32) |
lastsector | unsigned char | 1B | Current block index |
daystotal | unsigned char | 1B | Entire memory block maximum storage number of days |
dayscnt | unsigned char | 1B | Number of days is deposited in entire memory block |
itemsize | unsigned char | 1B | Entry occupies byte number |
day_items | unsigned char | 1B | Entry number (96) can be deposited daily |
days[32] | FIXPT_SECT_INFO | 4B*32=128B | Block message |
Wherein, the structure of FIXPT_SECT_INFO is defined as:
Table 3
Field | Type | Space | Description |
itemcnt | unsigned char | 1B | Entry number is deposited |
date[3] | unsigned char | 3B | Date (date) |
By the above table 2 and table 3 as it can be seen that information data block occupied space is 4B+1B+1B+1B+1B+1B+1B+4B*32=
138B。
Based on above data, and since the erasing operation of FLASH is as unit of 4K, be each file data blocks and
Information data block respectively distributes the memory space of 4KB.
When the fixed-point data of file data blocks switchs to the fixed point file of xml format, DataFile root node, fixed-point number are created
Be stored as one using DataFile as the DataAttr node of father node according to attribute, each attribute be stored as be with DataAttr
The DI node of father node.Each entry of fixed-point data is stored as one using DataFile as the DataRec node of father node,
The sect attribute of DataRec node corresponds to the entry number of the entry, tm attribute by file data attribute the acquisition date and item
Purpose acquisition time is composed.Each fixed-point data value is stored as one using DataRec as the DI of father node section in entry
Point, attribute val are fixed-point data value.
The fixed point file example of the xml format of temporary file area storage is as follows:
Wherein, each child node has a newline behind each node than being retracted two spaces before its father node;
It is calculated according to xml format and each file containing 96 entries, the fixed point file of xml format is up to
Therefore 25454B distributes the memory space of 28KB for temporary file area.
When program initialization, the content of information data block is read in into memory, memory-resident when program is run occupies 138B's
Memory headroom.
To sum up, fixed point file management facilities are realized, it is only necessary to occupy the memory in the space 4KB*33+28KB=160KB, 138B.
If directly 31 xml format fixed point files of storage at least need 28KB*31=868KB.
By establishing above-mentioned fixed-point data storage format, the present embodiment uses following fixed-point data storage method, specifically
Including following storing process:
1) defining address data area is HDS_FIXPT_ADDR=0x1000000;
2) information data block in data field is loaded to internal storage structure hdr_info;
3) content for removing crc field in hdr_info is calculated into CRC32 value val_crc32, compares hdr_info.crc
Illustrate error in data if inconsistent with val_crc32, uses the data field of default value initialization FLASH;
4) the fixed-point data value pix_info and date cur_date of an entry are received;
5) currently stored piece of index information in memory is obtained, the date in index is compared with cur_date, if
It is inconsistent, it indicates that data are not belonging to current file block, then terminates the fixed-point data storage on the same day, and recalculate current file block
Index;
6) index of current file data block, method are calculated are as follows: current data block index+1 occupies total divided by file data
Then the remainder that block number 32 obtains, i.e. (hdr_info.lastsector+1) %32 wipe the data block legacy data, simultaneously will
The data block has deposited entry hdr_info.days [hdr_info.lastsector] .itemcnt and has been set as 0;
7) current data storage address, method are calculated are as follows: index hdr_ according to the resulting file data blocks of calculating first
Info.lastsector positions current block first address: HDS_CUR_ADDR=HDS_FIXPT_ADDR+4K* (1+hdr_
info.lastse ctor);Entry number has been deposited further according to current block, has positioned current entries writing address, it may be assumed that ITEM_CUR_
ADDR=HDS_CUR_ADDR+hdr_info.days [hdr_info.lastsector] .itemcnt*40, wherein 40 be each
Entry is taken up space;
8) by the fixed-point data value pix_info received according to storage format defined above, writing address ITEM_
CUR_ADDR;
9) it updates in memory and has deposited number of days and date information, method are as follows: if hdr_info.days [hdr_
Info.lasts ector] value of .itemcnt is 0, it indicates that cur_ will be updated on the date when proparea is the data block newly enabled
Date, if having deposited number of days to reach maximum storage number of days is that will deposit number of days simultaneously to add 1, i.e. hdr_info.dayscnt+=1;
10) entry information of current block in memory, method are as follows: hdr_info.days [hdr_ are updated
Info.lastsector] value of .itemcnt adds 1;
11) data field in FLASH is written in hdr_info by the crc for recalculating internal storage data.
By establishing above-mentioned fixed point file memory format, in the present embodiment when to fixed point file access, specifically include
Following procedure:
1) fixed-point data of communication service module accesses scheduled date;
2) file date for reading each of memory block index, can pass through traversal information data block according to the date
File data blocks attribute list, the index number of file data blocks where finding, further according to index number and starting first address meter
The offset address for calculating corresponding file data blocks obtains corresponding data block, according to the date of the data block and specified day
Phase is compared, if unanimously, indicating that the data block is the fixed-point data to be accessed;
3) entry data in file data blocks is read in order, and xml format is converted to by operation interface, is stored to facing
When file area xml format fixed point file in;
4) initial address, file size of xml document in temporary file area are returned into communication service module;
5) communication service module reads the xml document in temporary file area by access interface in a manner of binary stream.
In above-described embodiment, by the area storage medium FLASH Fen Weiliangge: data field and temporary file area.Data field includes
One information data block and multiple file data blocks, a file data blocks contain multiple entries, only needed for storage fixed point file
Dynamic data information.Temporary file area stores the complete fixed point file of an xml format.When receiving fixed-point data, according to memory
In index information recurrent wrIting FLASH.When communication service module accesses pinpoint file, it is corresponding that this document is positioned by the date
Data block, and data therein are converted to the fixed-point data of xml format, are stored in the temporary file of fixed space size
Area.Communication service module reads the fixed point file of the xml format in temporary file area by access interface in the method for binary stream.
As other embodiments, the file format in the temporary file area is not limited to xml format, can also be with
It is CSV, DAT format etc..The indexed mode is also not limited to the date as index, can also be believed with location information, type
Breath is as index.The data field is also not limited to be stored using data block, the form that can also be stored with object.Memory
Can also using other than FLASH other are other with read-write storage medium, such as solid state hard disk, mechanical hard disk etc.
Nonvolatile storage etc..The fixed-point data stores the fixed point in temporary file area into data field with binary system small end format
File on the format of binary stream to send.
Installation practice
As shown in Figure 1, the invention also provides a kind of distribution FTU to pinpoint document management apparatus, including memory, storage connect
Mouth, access interface and file conversion module;The work original of the memory, memory interface, access interface and file conversion module
Reason is identical as what is introduced in above method embodiment, therefore details are not described herein again.
Distribution FTU fixed point file management method and device based on the above method, do not use file system, in blocks
Memory is directly operated, disk fragments will not be generated;Memory is written according to genesis sequence when storage, it is suitable not depend on absolute time
Sequence, will not jump because of the time causes data out-of-order;By only storing the dynamic data in xml, disk space is effectively reduced
It occupies;And the xml model manipulation for expending very much memory source is converted into the operation directly to memory, with minimum memory
Expense realizes the storage and management of fixed point file, and the complexity and resource of file management are reduced under the premise of guaranteeing high performance
Consumption, effectively reduces product cost.
Claims (10)
1. a kind of distribution FTU pinpoints file management method, which comprises the steps of:
1) data field and temporary file area are established in memory, by fixed-point data storage into data field;
2) when needing send in fixed-point data, the fixed-point data is searched within a data area and carries out the fixed-point data found
Format conversion, and in the fixed point file stored into temporary file area, it will be sent on the fixed point file by temporary file area.
2. distribution FTU according to claim 1 pinpoints file management method, which is characterized in that the data field is divided into
One information data block and N number of file data blocks, daily fixed-point data occupy a file data blocks, and each file data blocks are used
In storing fixed-point data by entry, each entry includes fixed-point data itself and corresponding acquisition time, and information data block is for depositing
The attribute information of file data blocks is stored up, the attribute information includes the acquisition date of current file data block and has deposited entry number,
Index of the position subscript of attribute information as each file data blocks, N >=1.
3. distribution FTU according to claim 2 pinpoints file management method, which is characterized in that when needing to carry out fixed-point number
When according to above sending, as needed on send the date of data to search the corresponding file data blocks of the fixed-point data from information data block
Index, finds corresponding file data blocks further according to index.
4. distribution FTU according to claim 2 pinpoints file management method, which is characterized in that in step 1), further include
The process of CRC check, the content and CRC check value for reading information data block from data field when initialization are into internal storage structure, meter
The CRC check value of internal storage structure, compares the CRC in the CRC check value and data field of the internal storage structure where calculating information data block
Check value, if unanimously, then it is assumed that data are effective, if inconsistent, illustrate error in data, using default value initialization data area;
When information data block content changes in memory, recalculate the CRC check value of internal storage structure, and with the information in memory
Data block contents write data field together.
5. distribution FTU according to claim 1 pinpoints file management method, which is characterized in that, will be corresponding in step 2)
Fixed-point data is converted to xml format, stores in the fixed point file of the xml format into temporary file area.
6. distribution FTU according to claim 5 pinpoints file management method, which is characterized in that the fixed point in temporary file area
Data in a manner of binary stream on give.
7. a kind of distribution FTU pinpoints document management apparatus, which is characterized in that including memory, memory interface, access interface and text
Part conversion module;Data field and temporary file area are established in the memory;The memory interface is used for the fixed-point number that will be acquired
According to being transmitted in the data field in memory;The access interface is for receiving the control command sent in fixed-point data;The text
Part conversion module is used for when needing send in fixed-point data, the fixed point searching the fixed-point data within a data area and finding
Data format, and in the fixed point file stored into temporary file area;The temporary file area is literary by the fixed point
It is sent on part.
8. distribution FTU according to claim 7 pinpoints document management apparatus, which is characterized in that the data field is divided into
One information data block and N number of file data blocks, daily fixed-point data occupy a file data blocks, and each file data blocks are used
In storing fixed-point data by entry, each entry includes fixed-point data itself and corresponding acquisition time, and information data block is for depositing
The attribute information of file data blocks is stored up, the attribute information includes the acquisition date of current file data block and has deposited entry number,
Index of the position subscript of attribute information as each file data blocks, N >=1.
9. distribution FTU according to claim 8 pinpoints document management apparatus, which is characterized in that when needing to carry out fixed-point number
When according to above sending, as needed on send the date of data to search the corresponding file data blocks of the fixed-point data from information data block
Index, finds corresponding file data blocks further according to index.
10. distribution FTU according to claim 7 pinpoints document management apparatus, which is characterized in that the memory is
FLASH。
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CN110769049A (en) * | 2019-10-17 | 2020-02-07 | 许继集团有限公司 | Power distribution terminal and SOE data uploading method thereof |
CN110769049B (en) * | 2019-10-17 | 2022-04-08 | 许继集团有限公司 | Power distribution terminal and SOE data uploading method thereof |
CN110765076A (en) * | 2019-10-25 | 2020-02-07 | 北京奇艺世纪科技有限公司 | Data storage method and device, electronic equipment and storage medium |
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