CN105389125A - High temperature protection method and apparatus for EMMC - Google Patents
High temperature protection method and apparatus for EMMC Download PDFInfo
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- CN105389125A CN105389125A CN201510688000.XA CN201510688000A CN105389125A CN 105389125 A CN105389125 A CN 105389125A CN 201510688000 A CN201510688000 A CN 201510688000A CN 105389125 A CN105389125 A CN 105389125A
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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
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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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
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Abstract
The present invention discloses a high temperature protection method and apparatus for an EMMC. The method comprises: creating a virtual joint file system in memory of a terminal device, wherein the joint file system comprises a backup file directory and an embedded memory EMMC file directory, the EMMC file directory is corresponding to a data storage path in the EMMC of the terminal device, and the backup file directory is corresponding to a data storage path in the memory of the terminal device; and when detecting temperature of the EMMC is a first temperature value, controlling the joint file system to store application-generated data into the memory corresponding to the backup file directory, and simultaneously interrupting the joint file system to carry out a data reading or storage operation based on the EMMC file directory, wherein the first temperature value exceeds a preset temperature threshold value. The method and apparatus disclosed by the embodiments of the invention can improve heat resistance of an ordinary EMMC from a software level, thereby improving production efficiency.
Description
Technical field
The embodiment of the present invention relates to technical field of information storage, particularly relates to a kind of embedded memory (EmbeddedMultiMediaCard, EMMC) high-temperature protection method and device.
Background technology
Along with the high speed development of science and technology, the product of field of industrial automation control and consumer electronics field is constantly grown at top speed.At present, the EMMC that the EMMC used for the product (such as electrical equipment, space equipment and core grid equipment etc.) of field of industrial automation control and the product of consumer electronics field use produces respectively.
Due to field of industrial automation control product operationally, likely can produce higher temperature owing to running for a long time, this has higher high-temperature resistance with regard to the EMMC requiring field of industrial automation control to use; And the temperature that the product of consumer electronics field (such as smart mobile phone, panel computer and PC etc.) operationally produces is lower, the EMMC that therefore consumer electronics field uses just does not need to possess higher high-temperature resistance.Therefore, above-mentioned difference just brings EMMC that automation control area uses and the difference of EMMC in manufacture craft that consumer electronics field uses, the EMMC used due to field of industrial automation control need have higher high-temperature resistance, therefore its manufacturing process is more complicated, production cycle is also longer, cause production cost higher, production efficiency is also relatively low.
Summary of the invention
The embodiment of the present invention provides a kind of EMMC high-temperature protection method and device, improves the heat-resisting quantity of common EMMC, enhance productivity from software view.
First aspect, embodiments provides a kind of EMMC high-temperature protection method, comprising:
Virtual union file system is created in the internal memory of terminal device, backup file catalogue and EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
When temperature EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
Second aspect, the embodiment of the present invention also provides a kind of EMMC high temperature protection device, comprising:
Union file system creation module, for creating virtual union file system in the internal memory of terminal device, backup file catalogue and EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
Control module, for when the temperature described EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
The embodiment of the present invention by creating virtual union file system in the internal memory of terminal device, when detecting that the temperature of described EMMC exceedes preset temperature threshold value, by controlling in described union file system, the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupting described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation.That is, when temperature exceedes preset temperature threshold value, only carry out file read-write operations based on backup file catalogue, and the EMMC that stopped using, therefore also just avoid and read-write operation is carried out to it and the constant temperature that causes raises due to frequent, so just can compensate for the defect of the heat-resisting quantity deficiency of common EMMC from software view, avoid high temperature to the injury of common EMMC, and without the need to adopting complicated manufacture craft to make resistant to elevated temperatures EMMC specially, thus enhance productivity.
Accompanying drawing explanation
The schematic flow sheet of the EMMC high-temperature protection method that Fig. 1 provides for the embodiment of the present invention one;
The first the application scenarios schematic diagram of the EMMC high-temperature protection method that Fig. 2 A provides for the embodiment of the present invention two;
The second application scenarios schematic diagram of the EMMC high-temperature protection method that Fig. 2 B provides for the embodiment of the present invention two;
The structural representation of the EMMC high temperature protection device that Fig. 3 provides for the embodiment of the present invention three.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
The executive agent of the EMMC high-temperature protection method that the embodiment of the present invention provides; can be the EMMC high temperature protection device that the embodiment of the present invention provides; or be integrated with the terminal device of EMMC high temperature protection device (such as; smart mobile phone, panel computer etc.); or be integrated with the central processing unit of the terminal device of EMMC high temperature protection device; or be integrated with the industrial automation equipment (such as electrical equipment, space equipment and core grid equipment etc.) of EMMC high temperature protection device, this EMMC high temperature protection device can adopt the mode of hardware or software to realize.
Embodiment one
The schematic flow sheet of the EMMC high-temperature protection method that Fig. 1 provides for the embodiment of the present invention one, as shown in Figure 1, specifically comprises:
Step 11, in the internal memory of terminal device, create virtual union file system, backup file catalogue and EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
In the present embodiment, because the terminal device easily producing high temperature during work mostly is some industrial automation equipments (such as electrical equipment, space equipment and core grid equipment etc.), so the described terminal device of the present embodiment is preferably industrial automation equipment.In the prior art, need the resistant to elevated temperatures EMMC for industrial automation equipment special configuration complex manufacturing technology, and the described EMMC not resistant to elevated temperatures EMMC in the present embodiment, but the EMMC of common making, such as, can be the EMMC that the product of consumer electronics field and smart mobile phone, panel computer use, due to this type of EMMC, to make not only technique simple, and cost is lower, thus can be cost-saving and enhance productivity.
Step 12, when temperature EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
Wherein, described first temperature value is the temperature value of the current generation of described EMMC, and described preset temperature threshold value specifically normally can to work down the maximum temperature value that can bear according to the EMMC configured in terminal device.That is; when detecting that the temperature value of the current generation of described EMMC exceedes the maximum temperature value that can bear; then for the described EMMC of protection can not be burnt by high temperature; then control described union file system to interrupt carrying out digital independent based on described EMMC file directory or storing operation; simultaneously in order to ensure that the data that application program produces are not lost; can work normally, then control described union file system and the data that application program produces are stored in internal memory corresponding to described backup file catalogue.
The present embodiment by creating virtual union file system in the internal memory of terminal device, when detecting that the temperature of described EMMC exceedes preset temperature threshold value, by controlling described union file system, the data that application program produces being stored in internal memory corresponding to described backup file catalogue, interrupting described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation.That is, when temperature exceedes preset temperature threshold value, only carry out file read-write operations based on backup file catalogue, and the EMMC that stopped using, therefore also just avoid and read-write operation is carried out to it and the constant temperature that causes raises due to frequent, so just can compensate for the defect of the heat-resisting quantity deficiency of common EMMC from software view, avoid high temperature to the injury of common EMMC, and without the need to adopting complicated manufacture craft to make resistant to elevated temperatures EMMC specially, thus enhance productivity.
Exemplary, on the basis of above-described embodiment, when temperature EMMC being detected is the first temperature value, described method also comprises:
Control described union file system and from internal memory, read data required when described application program is run according to described backup file catalogue.
Concrete, when detecting that the temperature value of the current generation of described EMMC exceedes the maximum temperature value that can bear, the internal memory that now can only control described union file system corresponding to described backup file catalogue reads and stores operation, until after the temperature value of the current generation of described EMMC returns to below maximum temperature value, the data that in this time period, described application program produces, and the data of the reading needed all are stored by the internal memory that described backup file catalogue is corresponding.
Exemplary, on the basis of above-described embodiment, when the temperature described EMMC being detected is the second temperature value, control described union file system according to reading data required when described application program is run in described backup file catalogue and/or described EMMC file directory; Wherein, described second temperature value is less than or equal to described preset temperature threshold value.
Wherein, described second temperature value is the temperature value of the current generation of described EMMC, and the EMMC that described preset temperature threshold value specifically can be set to configure in terminal device normally works down the maximum temperature value that can bear.That is, when the temperature value of the current generation of described EMMC being detected less than or equal to the maximum temperature value that can bear, then illustrate that described EMMC can normally work, then now can control described union file system from described EMMC file directory, read data required when described application program is run.
Concrete, can produce the second temperature value at described EMMC in following two stages: the first stage, when described terminal device is just started shooting, the temperature value that now described EMMC is current is general lower, now can trigger the associative operation of the present embodiment; Subordinate phase, when EMMC has the first temperature value to drop to the second temperature, when being namely down to normal temperature by high temperature, then recovers described union file system to the reading of described EMMC file directory and storage operation.
Exemplary, on the basis of above-described embodiment, when the temperature described EMMC being detected is the second temperature value, described method also comprises:
Control the data that application program produces by described union file system to be stored in internal memory according to described backup file catalogue, and control according to described backup file catalogue described data to be sent in EMMC corresponding to described EMMC file directory in real time to back up;
Empty the data in described backup file catalogue, return and perform storage operation.
Concrete, when the temperature described EMMC being detected is the second temperature value, that is, the current temperature value of described EMMC lower than or when equaling the maximum temperature value that can bear, now both can control described union file system the data that application program produces to be stored in described backup file catalogue and to be stored in internal memory, from the internal memory that described backup file catalogue is corresponding, read data, data can be read from EMMC corresponding to described EMMC file directory again.
Data in described EMMC back up to EMMC corresponding to described EMMC file directory by the data syn-chronization that controls described backup file catalogue and described application program produced.Simultaneously, in order to make described backup file catalogue corresponding in there is high temperature time have enough storage spaces to store data, need to control described backup file catalogue described data to be sent in real time in EMMC corresponding to described EMMC file directory, empty the data in described backup file catalogue simultaneously.
In addition, when backing up in the EMMC that the data syn-chronization described application program produced is corresponding to described EMMC file directory, realize by inotify mechanism.Wherein, described inotify is a linux kernel characteristic, and in the present embodiment, it can monitor the change of the backup file catalogue in union file system, when determining that described backup file catalogue has data variation, then the data of synchronous respective change are in EMMC corresponding to EMMC file directory.
Exemplary, on the basis of above-described embodiment, described union file system is aufs file system;
Accordingly, described backup file catalogue is tmpfs file directory.
Wherein, described aufs is a file system, can different file directorys is united, makes the file in different file directorys jointly be presented on newly-built aufs union file system, such as, sets up aufs file system by such as giving an order:
mount-taufs-obr＝/a＝rw:/b/c
Accordingly, on the basis creating above-mentioned aufs file system, then set up a tmpfs file directory.Described tmpfs file directory is a kind of file system based on internal memory, is also based on the best file system of random access memory (randomaccessmemory, RAM).And it is different from most standard file system, such as third generation extended file system (Thirdextendedfilesystem, and ReiserFS file system etc. ext3), tmpfs is present in above a bottom block device, but be directly based upon on virtual memory, just can create tmpfs file directory with a simple mount order below:
mount-ttmpfs-osize＝10Mtmpfs/tmpfs
Therefore, use aufs file system as union file system, just can simply and easily by described tmpfs file directory and described EMMC file directory united.Meanwhile, also facilitate the reading of data and store operation.
The various embodiments described above equally by creating virtual union file system in the internal memory of terminal device, when detecting that the temperature of described EMMC exceedes preset temperature threshold value, by controlling described union file system, the data that application program produces being stored in internal memory corresponding to described backup file catalogue, interrupting described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation.That is, when temperature exceedes preset temperature threshold value, only carry out file read-write operations based on backup file catalogue, and the EMMC that stopped using, therefore also just avoid and read-write operation is carried out to it and the constant temperature that causes raises due to frequent, so just can compensate for the defect of the heat-resisting quantity deficiency of common EMMC from software view, avoid high temperature to the injury of common EMMC, and without the need to adopting complicated manufacture craft to make resistant to elevated temperatures EMMC specially, thus enhance productivity.
Embodiment two
The present embodiment is for aufs file system and tmpfs file directory, and for the different temperatures stage that described EMMC produces, the operating process of the described aufs file system of control to described tmpfs file directory and EMMC file directory is described in detail respectively.
As shown in Figure 2 A, when described terminal device is just started shooting, the temperature value that now described EMMC is current is general lower, now, can control described aufs file system can be stored in internal memory corresponding to described tmpfs file directory by the data that application program produces, and described aufs file system can be controlled from described tmpfs file directory and described EMMC file directory, read required data when described application program is run, simultaneously in order to ensure described tmpfs file directory corresponding in there is high temperature time have enough storage spaces to store data, needing to control described tmpfs file directory is transferred in EMMC corresponding to described EMMC file directory in real time by described data, empty the data in described tmpfs file directory.
As shown in Figure 2 B, when the temperature value that EMMC is current is about to exceed the maximum temperature value that can bear, then interrupts described aufs file system and carry out digital independent based on described EMMC file directory or store operation.Only allow described aufs file system the data that application program produces to be stored in internal memory corresponding to described tmpfs file directory, and read the data needed when application program is run by described tmpfs file directory.
When the temperature value that EMMC is current returns to below the maximum temperature value that can bear, then from recovery described aufs file system, the reading of described EMMC file directory and storage are operated.As shown in Figure 2 B, meanwhile, the data variation in described tmpfs file directory is synchronized in described EMMC file directory.
Embodiment three
The structural representation of the EMMC high temperature protection device that Fig. 3 provides for the embodiment of the present invention three, as shown in Figure 3, specifically comprises: union file system creation module 31 and control module 32;
Described union file system creation module 31 for creating virtual union file system in the internal memory of terminal device, backup file catalogue and EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
Described control module 32 is for when the temperature described EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
EMMC high temperature protection device described in the present embodiment is for performing the EMMC high-temperature protection method described in the various embodiments described above, and the technique effect of its know-why and generation is similar, is not repeated here.
Exemplary, on the basis of above-described embodiment, described control module 31 also for:
When the temperature described EMMC being detected is the second temperature value, control described union file system according to reading data required when described application program is run in described backup file catalogue and/or described EMMC file directory; Wherein, described second temperature value is less than or equal to described preset temperature threshold value.
Exemplary, on the basis of above-described embodiment, described control module 32 specifically for:
Control described union file system and from internal memory, read data required when described application program is run according to described backup file catalogue.
Exemplary, on the basis of above-described embodiment, described control module 32 specifically for:
Control the data that application program produces by described union file system to be stored in internal memory according to described backup file catalogue, and control according to described backup file catalogue described data to be sent in EMMC corresponding to described EMMC file directory in real time to back up;
Described device also comprises: data empty module 33;
Described data empty module 33 for emptying the data in described backup file catalogue, return the storage operation performing described control module 32.
Exemplary, on the basis of above-described embodiment, described union file system is aufs file system;
Accordingly, described backup file catalogue is tmpfs file directory.
EMMC high temperature protection device described in the various embodiments described above is equally for performing the EMMC high-temperature protection method described in the various embodiments described above, and the technique effect of its know-why and generation is similar, is not repeated here.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. an EMMC high-temperature protection method, is characterized in that, comprising:
Virtual union file system is created in the internal memory of terminal device, backup file catalogue and embedded memory EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
When temperature EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
2. method according to claim 1, is characterized in that, also comprises:
When the temperature described EMMC being detected is the second temperature value, control described union file system according to reading data required when described application program is run in described backup file catalogue and/or described EMMC file directory; Wherein, described second temperature value is less than or equal to described preset temperature threshold value.
3. method according to claim 1, is characterized in that, also comprises:
Control described union file system and from internal memory, read data required when described application program is run according to described backup file catalogue.
4. method according to claim 2, is characterized in that, also comprises:
Control the data that application program produces by described union file system to be stored in internal memory according to described backup file catalogue, and control according to described backup file catalogue described data to be sent in EMMC corresponding to described EMMC file directory in real time to back up;
Empty the data in described backup file catalogue, return and perform storage operation.
5. the method according to any one of Claims 1 to 4, is characterized in that, described union file system is aufs file system;
Accordingly, described backup file catalogue is tmpfs file directory.
6. an EMMC high temperature protection device, is characterized in that, comprising:
Union file system creation module, for creating virtual union file system in the internal memory of terminal device, backup file catalogue and EMMC file directory is comprised in described union file system, described EMMC file directory corresponds to the store path of data in described terminal device EMMC, and described backup file catalogue corresponds to the store path of described terminal device data in EMS memory;
Control module, for when the temperature described EMMC being detected is the first temperature value, control described union file system the data that application program produces to be stored in internal memory corresponding to described backup file catalogue, interrupt described union file system simultaneously and carry out digital independent based on described EMMC file directory or store operation; Wherein, described first temperature value exceedes preset temperature threshold value.
7. device according to claim 6, is characterized in that, described control module also for:
When the temperature described EMMC being detected is the second temperature value, control described union file system according to reading data required when described application program is run in described backup file catalogue and/or described EMMC file directory; Wherein, described second temperature value is less than or equal to described preset temperature threshold value.
8. device according to claim 6, is characterized in that, described control module specifically for:
Control described union file system and from internal memory, read data required when described application program is run according to described backup file catalogue.
9. device according to claim 7, is characterized in that, described control module specifically for:
Control the data that application program produces by described union file system to be stored in internal memory according to described backup file catalogue, and control according to described backup file catalogue described data to be sent in EMMC corresponding to described EMMC file directory in real time to back up;
Described device also comprises:
Data empty module, for emptying the data in described backup file catalogue, return the storage operation performing described control module.
10. the device according to any one of claim 6 ~ 9, is characterized in that, described union file system is aufs file system;
Accordingly, described backup file catalogue is tmpfs file directory.
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