CN108647278A - A kind of file management method and system - Google Patents
A kind of file management method and system Download PDFInfo
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- CN108647278A CN108647278A CN201810415462.8A CN201810415462A CN108647278A CN 108647278 A CN108647278 A CN 108647278A CN 201810415462 A CN201810415462 A CN 201810415462A CN 108647278 A CN108647278 A CN 108647278A
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Abstract
The invention discloses a kind of file management method and system, which includes：Host computer, FPGA, time service module and data memory module, data memory module include ROM bit cell and FLASH storage units；ROM bit cell storage unit is divided into configuring area and address area, and FLASH storage units are divided into data field and free area, and the configuration information of configuring area memory module for storing data, address area is used to store the starting block address of user file, user file occupies block number；Data field is for storing user file；Free area is for storing date information；Time service module is used to provide date information to the FPGA.The present invention is by obtaining file date information, obtain file date information list, the starting block address of user file storage is read in file date information list, it is that can determine that the storage location of required user file to occupy block number according to the corresponding starting block address of the date information and user file, to realize that host computer selectively reads the visualization of user data.
Description
Technical field
The present invention relates to art file management technology field, more particularly to a kind of file management method and system.
Background technology
Develop with the high speed development of modern science and technology, the storage of Large Volume Data with read space flight, exploration,
The various fields such as medical treatment have obtained extensive utilization.In the actual environment, people always want to through a large amount of data come more preferable
Contact between ground data, or pinpoint the problems to avoid the problem that being likely to occur in time by the comparison of data, into
And direct experience is provided in PRACTICE OF DESIGN from now on.So the research of mass storage is never halted.
It needs to handle more and more multidate informations in scientific research and industrial production, the data volume studied is needed also to get over
Come more, correspondingly, reading speed, reading manner to the memory capacity of memory, storage speed and to memory are also
More stringent requirements are proposed.At this moment, the document handling system of direct relation just seems exceptionally important with reading speed.
In terms of the application field of data acquisition storage, according to the resource environment of system, file system is roughly divided into base
File management system under operating system and the file management system without operating system.File management system without operating system
It is relatively easy suitable for function, in the stronger storage device of specificity.This file management has very strong flexibility, also,
Its function can accordingly be changed according to the difference of application environment, optimal performance is realized with minimum cost to reach
Purpose.
Nowadays, the file management method for being directed to memory makes rapid progress.But on the whole, existing file management side
Method is mostly that several pieces are reserved in the data fields NAND FLASH, these blocks are used for the index information of storage file, index letter
Breath generally comprises the specific of some user files such as total number of files, file size, file renewal time, file storage first and last address
Information, and the operation such as timely update is carried out to these information.Finally, by host computer read index information list come realize to
The visualization of user data is read.But it additionally opens up certain capacity memory due to this kind of file management method needs to store index to believe
Breath, and storage data all need to be updated the file in index area every time, and not only update mode is relatively complicated, programming
It is also more complicated, moreover frequently the operations such as is wiped, is written to the block for reserving storage file information, can makes the part
Block memory space loss cannot access good equilibrium.
Invention content
In view of the deficiencies of the prior art, it is an object of the present invention to provide it is a kind of it is simple and effective, can be to Large Volume Data
The file management method effectively managed.
A kind of file management method, this method include：
What FPGA reception host computers were sent writes date information request, and date information request is write from ROM storage lists according to described
The address area of member obtains the starting block address of this storage, obtains date information from time service module, and by the date information of acquisition
The free area of FLASH storage units is written；
The FPGA receives the user file of writing that host computer is sent and asks, and is asked from described according to the user file of writing
The address area of ROM bit cell obtains the starting block address of this storage, and according to the starting block address of acquisition by user file
The data field of FLASH storage units is written in order；
The FPGA receives the reading file date information request that host computer is sent, according to the reading file date information request
File date information is read from the free area of FLASH storage units；
The host computer carries out analysis and arrangement to the file date information of reading, obtains file date information list；
The host computer finds the date information and starting block address of required user file from the fileinfo list,
And user is read from the data field of the FLASH storage units according to the date information of the user file found and starting block address
File.
As a further improvement on the present invention, described to ask it in the written document date information for receiving host computer transmission for the first time
Before, the address area of ROM bit cell is written in the first address information of FLASH storage units by FPGA；
In N (N is more than or equal to 1 integer) the secondary data field that user file is written to FLASH storage units in order
Later, the address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage by FPGA.
As a further improvement on the present invention, this method further includes：By matching for ROM bit cell and FLASH storage units
The configuring area of confidence breath write-in ROM bit cell.
As a further improvement on the present invention, the configuration information includes at least ROM bit cell and FLASH storage units
Capacity, configuring area capacity, configuring area initial address, address area capacity, address area initial address, data field capacity, data field
Initial address, a complete frame structure byte number, frame structure table, controlling of sampling rate.
As a further improvement on the present invention, described and starting block address according to acquisition by user file data in order
The data field that FLASH storage units are written, specifically includes：
When writing a block, judge whether next piece of memory space is empty, if so, after the data of next piece of erasing,
User file is written to the data field of FLASH storage units in order, otherwise, directly user file data are written in order
The data field of FLASH storage units.
As a further improvement on the present invention, when the stop recording order or unexpected power down for receiving host computer transmission, electricity
Source module provides electric energy and writes the user file cached in the data field of FLASH storage units and update ROM bit cell
Address information in address area, described address information include starting block address, user file occupancy block number.
As a further improvement on the present invention, described and according to the date information of the user file found and starting block address
User file is read from the data field of the FLASH storage units, is specifically included：When reading a block, judge whether it is most
Latter piece, if so, stopping reading after running through the block；Otherwise, after running through the block, continue to read next piece.
The second purpose of the present invention is to provide it is a kind of it is simple and effective, can be to file pipe that Large Volume Data is effectively managed
Reason system.
A kind of file management system, the system include：Including：Host computer, FPGA, time service module and data memory module,
The data memory module includes ROM bit cell and FLASH storage units；
The ROM bit cell storage unit is divided into configuring area and address area, and the FLASH storage units are divided into data field
And free area, the configuring area are used to store the configuration information of the data memory module, described address area is for storing user
The starting block address of file, user file occupy block number；The data field is for storing user file；The free area is for depositing
Store up date information；
The host computer is used to write date information request to FPGA transmissions；
The FPGA is asked for receiving the date information of writing, and date information request is write from described address area according to described
The starting block address for obtaining this storage obtains date information from time service module, and the sky is written in the date information of acquisition
In the correspondence page in not busy area；
The time service module is for providing date information；
The host computer is additionally operable to write user file request to FPGA transmissions；
The FPGA, which is additionally operable to receive, writes user file request, asks to obtain from described address area according to the user file of writing
The starting block address for taking this to store, and user file is written according to the starting block address of acquisition by the data field in order；
The host computer, which is additionally operable to send to the FPGA, reads file date information request；
The FPGA is additionally operable to receive the reading file date information request, according to the reading file date information request from
Read date information in the free area；
The host computer is additionally operable to carry out analysis and arrangement to the date information of reading, obtains file date information list；
The host computer is additionally operable to find the date information of required user file with from the file date information list
Beginning block address reads user file according to the date information of the user file found and starting block address from the data field.
As a further improvement on the present invention, the FPGA is additionally operable to：
Before receiving the written document date information request that host computer is sent for the first time, by the first address of FLASH storage units
The address area of ROM bit cell is written in information；
In N (N is more than or equal to 1 integer) the secondary data field that user file is written to FLASH storage units in order
Later, the address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage.
As a further improvement on the present invention, which further includes：Power module receives stopping for host computer transmission for working as
When only recording order or unexpected power down, electric energy is provided and writes the user file cached in the data field of FLASH storage units simultaneously
Update the address information in the address area of ROM bit cell.
Beneficial effects of the present invention：
The present invention stores user file by using the data fields FLASH, using the free areas FLASH come the storage file date
Information is stored the starting block address of user file using the address areas ROM, passed through using the configuring areas ROM come storage configuration information
Free area file date information is obtained, user file information list is obtained, user file storage is read in fileinfo list
Block initial address, be that can determine that the storage location of required user file according to the corresponding initial address of the date information, from
And it realizes host computer and the visualization of user data is selectively read.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the schematic diagram of file management method in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of FLASH storage units in the embodiment of the present invention.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, in the embodiment of the present invention, this approach includes the following steps：
Step S110, FPGA receive host computer send write date information request, according to it is described write date information request from
The address area of ROM bit cell obtains the starting block address of this storage, obtains date information from time service module, and by acquisition
The free area of FLASH storage units is written in date information；
Wherein, date information is stored in corresponding each piece of the every page of user data.The date address of acquisition is write
The free area entered is the free area corresponding to the starting block address of acquisition；Time service module is GPS time service modules, the lattice of date information
Formula be date Hour Minute Second millisecond, year occupy 11, the moon occupy 4bit, day occupy 5bit, when occupy 5bit, point occupy 6bit,
Second occupies 6bit, and millisecond occupies 6bit, and every page of free area writes date information and occupies 43, i.e. six bytes of most occupancy.
Preferably, further comprising the steps of before executing step S110 for the first time：
ROM bit cell and the configuration information of FLASH storage units are written to the configuring area of ROM bit cell；
Specifically, the configuration information includes the capacity of ROM bit cell and FLASH storage units, configuring area capacity, matches
Set area's initial address, address area capacity, address area initial address, data field capacity, data field initial address, a whole frame knot
Structure byte number, frame structure table etc..
Preferably, further comprising the steps of before executing step S110 for the first time：
The address area of ROM bit cell is written in the first address information of FLASH storage units by the FPGA.
Wherein, due to including the starting block address of user file storage in the fileinfo list that gets, and free area
In there is no the first address for storing user file, this requires the first address information by data storage at the beginning of being most written back to
In listed files.
Step S120, the described FPGA receives the user file of writing that host computer is sent and asks, and is asked according to the user file of writing
The address area from the ROM bit cell is asked to obtain the starting block address of this storage, and will according to the starting block address of acquisition
The data field of FLASH storage units is written in user file in order；
Preferably, after the write-in of user file each time, if not writing full block memory space, the lower number after power down
It is directly written from next BOB(beginning of block) according to storage.
Wherein, in N (N is more than or equal to 1 integer) the secondary number that user file is written to FLASH storage units in order
After area, the address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage by FPGA.
Wherein, FLASH storage units are written in user file data by described and starting block address according to acquisition in order
Data field, specifically include：When writing a block, judge whether next piece of memory space is empty, if so, next piece of erasing
Data after, user file is written to the data field of FLASH storage units in order, otherwise, is directly pressed user file data
It is sequentially written in the data field of FLASH storage units.
Step S130, the described FPGA receives the reading file date information request that host computer is sent, according to the reading file day
Phase information request reads file date information from the free area of FLASH storage units；
Step S140, the described host computer carries out analysis and arrangement to the file date information of reading, obtains file date information
List；
Wherein, the first address that file date information list is stored by initial time, end time, the data of writing user file
Deng composition.
Step S150, the described host computer from the date information that required user file is found in the fileinfo list and
Beginning block address, and according to the date information of the user file found and starting data of the block address from the FLASH storage units
Read user file in area.
Wherein, described and single from FLASH storages according to the date information of the user file found and starting block address
User file is read in the data field of member, specifically includes：When reading a block, judge whether it is last block, if so, reading
Stop reading after the complete block；Otherwise, after running through the block, continue to read next piece.
Preferably, this method is further comprising the steps of：
When the stop recording order or unexpected power down for receiving host computer transmission, power module provides electric energy and deposits FLASH
The user file cached in the data field of storage unit writes and updates the address information in the address area of ROM bit cell.It is described
Address information includes starting block address.
Preferably, the FLASH storage units are NAND FLASH mass storages.
The invention also includes file management system, which includes：Host computer, FPGA, time service module and data store mould
Block, the data memory module include ROM bit cell and FLASH storage units.
ROM bit cell storage unit is divided into configuring area and address area, and memory module is matched for storing data for configuring area
Confidence ceases, and address area is used to store the starting block address of user file, user file occupies block number；
As shown in Fig. 2, FLASH storage units include several pieces, each block includes several pages, every page again comprising data field and
Free area, data field is for storing user file, and free area is for storing date information.
Host computer is used to write date information request to FPGA transmissions；Time service module is for providing date information；
FPGA is used to receive the date information of writing and asks, and asks to obtain this from address area according to above-mentioned date information of writing
The starting block address of storage obtains date information from time service module, and the date information of acquisition is written to the correspondence page of free area
In；
Wherein, date information is stored in corresponding each piece of the every page of user data.The date address of acquisition is write
The free area entered is the free area corresponding to the starting block address of acquisition；Time service module is GPS time service modules, the lattice of date information
Formula be date Hour Minute Second millisecond, year occupy 11, the moon occupy 4bit, day occupy 5bit, when occupy 5bit, point occupy 6bit,
Second occupies 6bit, and millisecond occupies 6bit, and every page of free area writes date information and occupies 43, i.e. six bytes of most occupancy.
Host computer is additionally operable to write user file request to FPGA transmissions；
FPGA, which is additionally operable to receive, writes user file request, writes user file request according to above-mentioned and obtains this from address area and deposit
The starting block address of storage, and user file is written by data field according to the starting block address of acquisition in order；
Wherein, data field is written in user file data by described and starting block address according to acquisition in order, specific to wrap
It includes：When writing a block, judge whether next piece of memory space is empty, if so, after the data of next piece of erasing, by user
The data field of FLASH storage units is written in file in order, otherwise, FLASH is directly written in user file data in order and is deposited
The data field of storage unit.
Preferably, after the write-in of user file each time, if not writing full block memory space, the lower number after power down
It is directly written from next BOB(beginning of block) according to storage.
Host computer, which is additionally operable to send to FPGA, reads file date information request；
FPGA is additionally operable to receive above-mentioned reading file date information request, according to above-mentioned reading file date information request from the free time
Read date information in area；
Host computer is additionally operable to carry out analysis and arrangement to the date information of reading, obtains file date information list；
Wherein, the first address that file date information list is stored by initial time, end time, the data of writing user file
Deng composition.
Host computer is additionally operable to find the date information and starting block of required user file from above-mentioned file date information list
User file is read in address according to the date information of the user file found and starting block address from data field.
Wherein, described and single from FLASH storages according to the date information of the user file found and starting block address
User file is read in the data field of member, specifically includes：When reading a block, judge whether it is last block, if so, reading
Stop reading after the complete block；Otherwise, after running through the block, continue to read next piece.
Preferably, FPGA is additionally operable to：
For the first time receive host computer send write date information request before, by the first address information of FLASH storage units
The address area of ROM bit cell is written.
Wherein, due to including the starting block address of user file storage in the fileinfo list that gets, and free area
In there is no the first address for storing user file, this requires the first address information by data storage at the beginning of being most written back to
In listed files.
In N (N is more than or equal to 1 integer) the secondary data field that user file is written to FLASH storage units in order
Later, the address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage by FPGA.
Preferably, which further includes power module, and power module is used for when the stop recording life for receiving host computer transmission
It enables or when unexpected power down, electric energy is provided the user file cached in the data field of FLASH storage units is write and updates ROM and deposited
Address information in the address area of storage unit.
Preferably, the FLASH storage units are NAND FLASH mass storages.
Beneficial effects of the present invention：
The present invention stores user file by using the data fields FLASH, using the free areas FLASH come the storage file date
Information is stored the starting block address of user file using the address areas ROM, passed through using the configuring areas ROM come storage configuration information
Free area file date information is obtained, user file information list is obtained, user file storage is read in fileinfo list
Block initial address, block number is occupied according to the corresponding initial address of the date information and user file and can determine that required user
The storage location of file, to realize that host computer selectively reads the visualization of user data.
Above example is only to absolutely prove preferred embodiment that is of the invention and being lifted, and protection scope of the present invention is not
It is limited to this.Those skilled in the art on the basis of the present invention made by equivalent substitute or transformation, the present invention guarantor
Within the scope of shield.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of file management method, which is characterized in that including：
FPGA receives the date information of writing that host computer is sent and asks, and date information request is write from ROM bit cell according to described
Address area obtains the starting block address of this storage, obtains date information from time service module, and the date information of acquisition is written
The free area of FLASH storage units；
The FPGA receives the user file of writing that host computer is sent and asks, and asks to deposit from the ROM according to the user file of writing
The address area of storage unit obtain this storage starting block address, and according to the starting block address of acquisition by user file in order
The data field of FLASH storage units is written；
The FPGA receives the reading file date information request that host computer is sent, according to the reading file date information request from
Read file date information in the free area of FLASH storage units；
The host computer carries out analysis and arrangement to the file date information of reading, obtains file date information list；
The host computer finds the date information and starting block address of required user file, and root from the fileinfo list
According to the date information and starting block address of the user file found user's text is read from the data field of the FLASH storage units
Part.
2. file management method as described in claim 1, which is characterized in that further include：Receiving what host computer was sent for the first time
Before the request of written document date information, the address of ROM bit cell is written in the first address information of FLASH storage units by FPGA
Area；
N (N be more than or equal to 1 integer) is secondary the data field of FLASH storage units is written into user file in order after,
The address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage by FPGA.
3. file management method as described in claim 1, which is characterized in that further include：ROM bit cell and FLASH are deposited
The configuring area of the configuration information write-in ROM bit cell of storage unit.
4. file management method as claimed in claim 3, which is characterized in that it is single that the configuration information includes at least ROM storages
Member and the capacity of FLASH storage units, configuring area capacity, configuring area initial address, address area capacity, address area initial address,
Data field capacity, data field initial address, a complete frame structure byte number, frame structure table, controlling of sampling rate.
5. file management method as described in claim 1, which is characterized in that described and starting block address according to acquisition will be used
The data field of FLASH storage units is written in family file data in order, specifically includes：
When writing a block, judge whether next piece of memory space is empty, if so, after the data of next piece of erasing, will be used
The data field of FLASH storage units is written in family file in order, otherwise, FLASH is directly written in user file data in order
The data field of storage unit.
6. file management method as described in claim 1, which is characterized in that further include：When the stopping for receiving host computer transmission
When record order or unexpected power down, power module provides the user file that electric energy will cache in the data field of FLASH storage units
The address information in the address area of ROM bit cell is write and updates, described address information includes starting block address, user file
Occupy block number.
7. file management method as described in claim 1, which is characterized in that described and according to the date of the user file found
Information and starting block address read user file from the data field of the FLASH storage units, specifically include：When one block of reading
When, judge whether it is last block, if so, stopping reading after running through the block；Otherwise, after running through the block, after resuming studies
Remove one piece.
8. a kind of file management system, which is characterized in that including：Host computer, FPGA, time service module and data memory module, institute
It includes ROM bit cell and FLASH storage units to state data memory module；
The ROM bit cell storage unit is divided into configuring area and address area, and the FLASH storage units are divided into data field and sky
Not busy area, the configuring area are used to store the configuration information of the data memory module, and described address area is for storing user file
Starting block address, user file occupy block number；The data field is for storing user file；The free area is for storing day
Phase information；
The host computer is used to write date information request to FPGA transmissions；
The FPGA is asked for receiving the date information of writing, and date information request is write from the acquisition of described address area according to described
The starting block address of this storage obtains date information from time service module, and the free area is written in the date information of acquisition
Correspondence page in；
The time service module is used to provide date information to the FPGA；
The host computer is additionally operable to write user file request to FPGA transmissions；
The FPGA, which is additionally operable to receive, writes user file request, asks to obtain this from described address area according to the user file of writing
The starting block address of secondary storage, and user file is written according to the starting block address of acquisition by the data field in order；
The host computer, which is additionally operable to send to the FPGA, reads file date information request；
The FPGA is additionally operable to receive the reading file date information request, according to the reading file date information request from described
Read date information in free area；
The host computer is additionally operable to carry out analysis and arrangement to the date information of reading, obtains file date information list；
The host computer is additionally operable to find the date information and starting block of required user file from the file date information list
User file is read in address according to the date information of the user file found and starting block address from the data field.
9. file management system as claimed in claim 8, which is characterized in that the FPGA is additionally operable to：
Before receiving the written document date information request that host computer is sent for the first time, by the first address information of FLASH storage units
The address area of ROM bit cell is written；
N (N be more than or equal to 1 integer) is secondary the data field of FLASH storage units is written into user file in order after,
The address of the address area of ROM bit cell is updated to the starting block address of the N+1 times data storage.
10. file management system as claimed in claim 8, which is characterized in that further include：Power module is received for working as
When the stop recording order of position machine transmission or unexpected power down, the use that electric energy will cache in the data field of FLASH storage units is provided
Family file writes and updates the address information in the address area of ROM bit cell.
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| CN111061683A (en) * | 2019-12-30 | 2020-04-24 | 成都定为电子技术有限公司 | Method and device for storing and operating data stream at high speed |
| CN111159114A (en) * | 2019-12-30 | 2020-05-15 | 中国科学院寒区旱区环境与工程研究所 | File storage method and device and server |
| CN113342272A (en) * | 2021-06-07 | 2021-09-03 | 深圳数联天下智能科技有限公司 | Sitting posture data storage method, sitting posture data display method, intelligent cushion and system |
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