CN114911426B - Data storage method, storage device and overhead truck - Google Patents
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- 238000003745 diagnosis Methods 0.000 claims description 5
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- G06—COMPUTING; CALCULATING OR COUNTING
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- 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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- 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
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0616—Improving the reliability of storage systems in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
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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
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
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Abstract
The invention provides a data storage method, a storage device and a high-altitude vehicle, and belongs to the field of engineering machinery. The data storage method comprises the steps of dividing the storage space of the storage device into a plurality of storage sectors, setting a reading priority and a writing priority for each storage sector according to a priority initialization rule, and then executing corresponding operation according to the type of an operation instruction received by the storage device; when the operation instruction is a reading instruction, comparing the reading priorities of different storage sectors and reading the data to be read in the storage sector with the highest reading priority; and when the operation instruction is a write instruction, comparing the write priorities of different storage sectors, writing the data to be written into the storage sector with the highest write priority, and updating the read priority and the write priority of the storage sector according to a priority modification rule. The data storage method provided by the invention can prolong the service life of the storage device and enable the erasing and writing of the storage device to be balanced.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a data storage method, a storage device and a high-altitude vehicle.
Background
In an application system of a high-altitude vehicle, data which needs to be stored and updated frequently, such as working time data, fault diagnosis data, system state data and the like, can be frequently updated and erased in a short time, so that the function failure of a nonvolatile memory device is easily caused, and data loss and function abnormality are caused. Meanwhile, the existing nonvolatile memory devices such as EEPROM or FLASH have certain erasing and writing life, and when the erasing and writing times exceed the erasing and writing life, the nonvolatile memory devices also have function failure and cannot normally store data.
Therefore, how to provide a data storage method to overcome the above-mentioned defects in the prior art is becoming one of the technical problems to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a data storage method, a storage device and an overhead working truck, which aim to solve the problems of function failure and data loss of a nonvolatile storage device caused by frequent data updating and erasing in a short time in the prior art.
In order to achieve the above object, the present invention provides a data storage method, comprising the steps of:
s1: dividing the storage space of a storage device into a plurality of storage sectors, and setting a reading priority and a writing priority for each storage sector according to a priority initialization rule;
s2: executing corresponding operations according to the types of the operation instructions received by the storage device:
when the operation instruction is a read instruction, comparing the read priorities of different storage sectors and reading the data to be read in the storage sector with the highest read priority;
and when the operation instruction is a write instruction, comparing the write priorities of different storage sectors, writing the data to be written into the storage sector with the highest write priority, and updating the read priority and the write priority of the storage sector according to a priority modification rule.
Optionally, the dividing the storage space of the storage device into a plurality of storage sectors in step S1, and setting a read priority and a write priority for each storage sector according to the priority initialization rule, includes:
s11: dividing a storage space of the storage device into a preset number of storage sectors, wherein each storage sector comprises a plurality of bytes;
s12: setting a sector ID of each storage sector for storing a first byte of the storage sector, wherein the value range of the sector ID is from zero to a preset maximum threshold value, and the larger the value of the sector ID is, the higher the reading priority is; the smaller the value of the sector ID is, the higher the writing priority is;
s13: the sector ID of each of the memory sectors is set to 0 according to the priority initialization rule.
Optionally, when the operation instruction in step S2 is a read instruction, comparing read priorities of different storage sectors and reading data to be read in the storage sector with the highest read priority, the method includes:
s211: comparing the sector IDs of the different storage sectors to determine the storage sector with the largest sector ID;
s212: and reading the data to be read out in the storage sector with the largest sector ID.
Optionally, when the operation instruction in step S2 is a write instruction, comparing write priorities of different storage sectors, writing data to be written into the storage sector with the highest write priority, and updating a read priority and a write priority of the storage sector according to a priority modification rule, including:
s221: comparing the sector IDs of the different storage sectors to determine the storage sector with the smallest sector ID;
s222: writing the data to be written into the storage sector with the minimum sector ID;
s223: updating the minimum sector ID to a maximum sector ID +1 in the storage device.
Optionally, initializing the storage device when the maximum sector ID in the storage device reaches the preset maximum threshold;
wherein the initializing comprises: the sector IDs of all storage sectors are set to 0.
Optionally, the method further includes:
when the initialized storage device is subjected to first data writing, selecting one storage sector as a first sector, writing first data to be written into the first sector, and updating the sector ID of the first sector to be 1; when data is written for the second time, taking a storage sector adjacent to the first sector as a second sector, writing the data to be written into the second sector, and updating the sector ID of the second sector to 2; and in the same way, setting the sector ID of the storage sector written in each time as the maximum sector ID +1, and initializing the storage device again when the sector ID written in the storage sector currently reaches the preset maximum threshold value.
Optionally, the data to be written includes: fault diagnostic data, operating time data, and system status data.
Optionally, when writing the fault diagnosis data, the operating time data, or the system status data, a preset time interval is provided between the write command and the next write command.
In order to achieve the above object, the present invention further provides a memory device including a data read/write unit that performs data read/write by using the data storage method described in any one of the above.
In order to achieve the above object, the present invention further provides a high-altitude vehicle including the above-described storage device.
Compared with the prior art, the data storage method, the storage device and the overhead crane provided by the invention have the following beneficial effects:
the invention provides a data storage method, which comprises the steps of dividing the storage space of a storage device into a plurality of storage sectors, and setting read-out priority and write-in priority for each storage sector according to a priority initialization rule; then, executing corresponding operation according to the type of the operation instruction received by the storage device; when the operation instruction is a read instruction, comparing the read priorities of different storage sectors and reading the data to be read in the storage sector with the highest read priority; and when the operation instruction is a write instruction, comparing the write priorities of different storage sectors, writing the data to be written into the storage sector with the highest write priority, and updating the read priority and the write priority of the storage sector according to a priority modification rule. The data storage method provided by the invention divides the storage space of the storage device into the storage sectors with different reading priorities and writing priorities, and changes the writing priority of the storage sector which is subjected to the writing operation after each writing operation. Therefore, when the next data reading and writing are carried out on the storage device, the data to be written are distributed to different sectors for storage according to the new writing priority of the storage sectors, and the purpose of erasing balance is achieved. Meanwhile, when data storage is carried out, the data to be written is only written into one of the storage sectors each time, so that the storage device can carry out data erasing and writing operations more frequently, and the storage device has longer service life.
Because the storage device provided by the invention adopts the data storage method and the high-altitude vehicle comprises the storage device adopting the data storage method, the high-altitude vehicle at least has the same beneficial effects, and the details are not repeated.
Drawings
FIG. 1 is a flowchart of a data storage method according to an embodiment of the present invention;
FIG. 2 is an allocation diagram of a memory cell provided by a method according to an embodiment of the present invention.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is provided for the purpose of facilitating and clearly illustrating embodiments of the present invention. It should be understood that the drawings are not necessarily to scale, showing the particular construction of the invention, and that illustrative features in the drawings, which are used to illustrate certain principles of the invention, may also be somewhat simplified. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and environment of use. In the embodiments described below, the same reference numerals are used in common between different drawings to denote the same portions or portions having the same functions, and a repetitive description thereof will be omitted. In this specification, like reference numerals and letters are used to designate like items, and therefore, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.
Example one
The present embodiment provides a data storage method, and specifically, please refer to fig. 1 and fig. 2, where fig. 1 is a flowchart of a data storage method according to an embodiment of the present invention; FIG. 2 is a diagram of an allocation of memory cells provided in a method according to an embodiment of the present invention; as is apparent from fig. 1 and 2, the data storage method includes dividing a storage space of a storage device into a plurality of storage sectors, and setting a read priority and a write priority for each of the storage sectors according to a priority initialization rule; and then executing corresponding operations according to the operation instruction types received by the storage device: when the operation instruction is a reading instruction, comparing the reading priorities of different storage sectors and reading the data to be read in the storage sector with the highest reading priority; and when the operation instruction is a write instruction, comparing the write priorities of different storage sectors, writing the data to be written into the storage sector with the highest write priority, and updating the read priority and the write priority of the storage sector according to a priority modification rule.
With this arrangement, the data storage method provided by the present invention divides the storage space of the storage device into storage sectors having different read priorities and write priorities, and changes the write priority of the storage sector having undergone a write operation after each write operation. Therefore, when the next data reading and writing are carried out on the storage device, the data to be written are distributed to different sectors for storage according to the new writing priority of the storage sectors, and the purpose of erasing balance is achieved. Meanwhile, when data storage is carried out, the data to be written is only written into one of the storage sectors each time, so that the storage device can carry out data erasing and writing operations more frequently, and the storage device has longer service life.
It is specifically noted that the present invention is not limited to the type of memory device, including but not limited to FLASH or EEPROM, as will be appreciated by those skilled in the art.
Preferably, the dividing the storage space of the storage device into a plurality of storage sectors and setting the read priority and the write priority for each storage sector according to the priority initialization rule in step S1 includes:
s11: dividing a storage space of the storage device into a preset number of storage sectors, wherein each storage sector comprises a plurality of bytes;
s12: setting a sector ID of each storage sector for storing a first byte of the storage sector, wherein the value range of the sector ID is from zero to a preset maximum threshold value, and the larger the value of the sector ID is, the higher the reading priority is; the smaller the value of the sector ID is, the higher the writing priority is;
s13: the sector ID of each of the memory sectors is set to 0 according to the priority initialization rule.
Therefore, the data storage method provided by the invention can determine the reading priority and the writing priority of the storage sector according to the size of the sector ID, thereby ensuring the smooth writing of the data to be written and the smooth reading of the data to be read. In one preferred embodiment, the preset maximum threshold is 255.
Preferably, when the operation instruction in step S2 is a read instruction, the comparing the read priorities of different storage sectors and reading the data to be read in the storage sector with the highest read priority specifically includes:
s211: comparing the sector IDs of the different storage sectors to determine the storage sector with the largest sector ID;
s212: and reading the data to be read out in the storage sector with the largest sector ID.
In step S2, when the operation instruction is a write instruction, comparing write priorities of different storage sectors, writing data to be written into the storage sector with the highest write priority, and updating a read priority and a write priority of the storage sector according to a priority modification rule, including:
s221: comparing the sector IDs of the different storage sectors to determine the storage sector with the smallest sector ID;
s222: writing the data to be written into the storage sector with the smallest sector ID;
s223: updating the minimum sector ID to a maximum sector ID +1 in the storage device.
Thereby, the maximum sector ID and the minimum sector ID in the storage device are changed by writing the data to be written in the storage sector having the minimum sector ID and updating the sector ID of the storage sector to which the data to be written to the maximum sector ID +1 in the storage device, so that when the next data read/write operation is performed, the next data to be written is written in the storage sector of the updated new minimum sector ID and the data in the storage sector of the updated new maximum sector ID is read out.
Preferably, when the maximum sector ID in the storage device reaches the preset maximum threshold, the storage device is initialized, wherein the initializing includes: setting the sector IDs of all storage sectors to be 0, selecting one of the storage sectors as a first sector when performing first data writing on the initialized storage device, writing first data to be written into the first sector, and updating the sector ID of the first sector to be 1; when data is written for the second time, taking a storage sector adjacent to the first sector as a second sector, writing the data to be written into the second sector, and updating the sector ID of the second sector to 2; and in the same way, setting the sector ID of the storage sector written in each time as the maximum sector ID +1, and initializing the storage device again when the sector ID written in the storage sector currently reaches the preset maximum threshold value. Therefore, when the memory device is written, the data to be written is distributed to different memory sectors for storage along with the updating of the sector ID, and the purpose of erase and write balance is achieved. And because the data to be written is only written into one of the memory sectors each time when data storage is carried out, the memory device can carry out more frequent data erasing operations, thereby leading the memory device to have longer service life.
Preferably, the data to be written includes: fault diagnostic data, operating time data, and system status data. When writing fault diagnosis data, working time data or system state data, a preset time interval is formed between the writing instruction and the next writing instruction. Therefore, the storage device only needs to perform the next data reading and writing under the condition of meeting the time interval, and the data erasing and writing updating is not frequently performed, so that the erasing and writing frequency of the storage device is reduced, and the service life of the storage device is prolonged. In one preferred embodiment, the preset time interval is 2 hours, and the memory device performs the operation of updating the fault diagnosis data 12 times a day.
Example two
The embodiment provides a storage device, which comprises a data storage device and a data reading and writing device, wherein the data storage device adopts any one of the data storage methods for data reading and writing. Since the storage device adopts the data storage method according to any of the above embodiments, at least the same beneficial effects are achieved, and no further description is given here.
Specifically, an EEPROM having a storage space of 2048 bytes is taken as an example to describe a memory device that performs data reading and writing by using the data storage method provided by the present invention. First, the EEPROM is divided into 128 memory sectors, and if the memory update is performed once per second, the operation is performed for 6 hours a day, and 21600 (6 × 3600) memory operations are required a day. The service life of the memory device which does not adopt the data storage method provided by the invention is 0.126839 (1000000/(21600 × 365)) year. The service life of the memory device provided by the invention can reach 16.24 (128000000/(21600X 365)) years. Compared with the storage device which does not adopt the data storage method provided by the invention and can only carry out 100 ten thousand times of erasing and writing operations, the service life of the storage device which is divided into 128 storage sectors provided by the invention is prolonged by 128 times.
EXAMPLE III
The embodiment provides an overhead vehicle which comprises the storage device. Therefore, at least the same beneficial effects are obtained, and the detailed description is omitted.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example.
In summary, the data storage method provided by the present invention divides the storage space of the storage device into storage sectors with different read priorities and write priorities, and changes the write priority of the storage sector that has undergone a write operation after each write operation. Therefore, when the next data reading and writing are carried out on the storage device, the data to be written are distributed to different sectors for storage according to the new writing priority of the storage sectors, and the purpose of erasing balance is achieved. Meanwhile, when data storage is carried out, the data to be written are only written into one of the storage sectors each time, so that the storage device can carry out more frequent data erasing and writing operations, and the storage device has longer service life.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. Any person skilled in the art can make any equivalent substitutions or modifications on the technical solutions and technical contents disclosed in the present invention without departing from the scope of the technical solutions of the present invention, and still fall within the protection scope of the present invention without departing from the technical solutions of the present invention.
Claims (8)
1. A method of storing data, comprising the steps of:
s1: dividing the storage space of the storage device into a plurality of storage sectors, and setting a read priority and a write priority for each storage sector according to a priority initialization rule, comprising:
s11: dividing a storage space of the storage device into a preset number of storage sectors, wherein each storage sector comprises a plurality of bytes;
s12: setting a first byte of each storage sector to store a sector ID of the storage sector; the value range of the sector ID is zero to a preset maximum threshold value, and the larger the value of the sector ID is, the higher the reading priority is; the smaller the value of the sector ID is, the higher the writing priority is;
s13: setting the sector ID of each storage sector to 0 according to a priority initialization rule;
s2: executing corresponding operations according to the types of the operation instructions received by the storage device:
when the operation instruction is a read instruction, comparing the read priorities of different storage sectors and reading the data to be read in the storage sector with the highest read priority;
when the operation instruction is a write instruction, comparing write priorities of different storage sectors, writing data to be written into the storage sector with the highest write priority, and updating the read priority and the write priority of the storage sector according to a priority modification rule, including:
s221: comparing the sector IDs of the different storage sectors to determine the storage sector with the smallest sector ID;
s222: writing the data to be written into the storage sector with the smallest sector ID;
s223: the minimum sector ID is updated to a maximum sector ID +1 in the storage device.
2. A data storage method as claimed in claim 1, wherein said step S2, when said operation command is a read command, comparing read priorities of different said storage sectors and reading out data to be read out in said storage sector having the highest read priority, comprises:
s211: comparing the sector IDs of the different storage sectors to determine the storage sector with the largest sector ID;
s212: and reading the data to be read out in the storage sector with the largest sector ID.
3. A data storage method according to claim 1, wherein the storage device is initialized when the maximum sector ID in the storage device reaches the preset maximum threshold;
wherein the initializing comprises: the sector IDs of all storage sectors are set to 0.
4. A data storage method according to claim 3, further comprising:
when the initialized storage device is subjected to data writing for the first time, selecting one storage sector as a first sector, writing data to be written for the first time into the first sector, and updating the sector ID of the first sector to be 1; when data writing is performed for the second time, taking a storage sector adjacent to the first sector as a second sector, writing the data to be written into the second sector, and updating the sector ID of the second sector to 2; and in the same way, setting the sector ID of the storage sector written in each time as the maximum sector ID +1, and initializing the storage device again when the sector ID written in the storage sector currently reaches the preset maximum threshold value.
5. A data storage method according to claim 1, wherein said data to be written comprises: fault diagnostic data, operating time data, and system status data.
6. A data storage method according to claim 1, wherein when writing of the failure diagnosis data, the operating time data or the system status data is performed, there is a predetermined time interval between the write command and the next write command.
7. A memory device comprising a data storage device for reading and writing data using the data storage method of any one of claims 1 to 6.
8. A high altitude vehicle comprising the storage device of claim 7.
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| US7315916B2 (en) * | 2004-12-16 | 2008-01-01 | Sandisk Corporation | Scratch pad block |
| JP2007109333A (en) * | 2005-10-14 | 2007-04-26 | Hitachi Global Storage Technologies Netherlands Bv | Magnetic disk device and data recording and reproducing method |
| KR101497074B1 (en) * | 2008-06-17 | 2015-03-05 | 삼성전자주식회사 | Non-volatile memory system and data manage method thereof |
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| US10528273B2 (en) * | 2017-11-07 | 2020-01-07 | Nxp Usa, Inc. | Dynamic compression in an electrically erasable programmble read only memory (EEPROM) emulation system |
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Address after: Building 1 and 1-3 floors of Building 2 of Jinan Energy Industry Park, No. 1815 Gangyuan 7th Road, High tech Zone, Jinan City, Shandong Province, 250104 Patentee after: Beigu Electronics Co.,Ltd. Patentee after: Beigu Electronics (Wuxi) Co.,Ltd. Patentee after: Luogu Technology (Shanghai) Co.,Ltd. Patentee after: Beigu Electronics Co.,Ltd. Shanghai Branch Address before: 250104 building 20, zhizaogu, 2966 Chunhui Road, high tech Zone, Jinan City, Shandong Province Patentee before: NORTH VALLEY ELECTRONICS Co.,Ltd. Patentee before: Beigu Electronics (Wuxi) Co.,Ltd. Patentee before: Luogu Technology (Shanghai) Co.,Ltd. Patentee before: Beigu Electronics Co.,Ltd. Shanghai Branch |
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