CN108052456A - A kind of electricity data storage method, system and a kind of electricity data storage device - Google Patents
A kind of electricity data storage method, system and a kind of electricity data storage device Download PDFInfo
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- CN108052456A CN108052456A CN201711463338.0A CN201711463338A CN108052456A CN 108052456 A CN108052456 A CN 108052456A CN 201711463338 A CN201711463338 A CN 201711463338A CN 108052456 A CN108052456 A CN 108052456A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
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Abstract
The invention discloses a kind of electricity data storage methods to include：When generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part integer storage number of pages, and according to integer part calculate electricity data fractional part decimal store number of pages；The integer part of electricity data is stored to integer and stores number of pages, fractional part stores to decimal and stores number of pages；Wherein, the integer part of electricity data is stored in N pages in flash, and fractional part is stored in M pages in the flash, and M, N are the integer more than 1, and M is the integral multiple of N.Electricity data storage method disclosed by the invention, using having the function of the flash stored programs of IAP and energy data, it is ensured that electricity data security.The invention also discloses a kind of electricity data storage system and a kind of electricity data storage device and a kind of computer readable storage mediums, equally can realize above-mentioned technique effect.
Description
Technical field
The present invention relates to electric energy meter technical field, more specifically to a kind of electricity data storage method, system and one
Kind electricity data storage device and a kind of computer readable storage medium.
Background technology
In electric energy meter design, most important data are exactly electricity data, in the typical design, can all be used dedicated outer
Portion's storaging chip, such as EEPROM (English full name：Electrically-Erasable Programmable Read-Only
Memory, Chinese full name：The electronics formula of erasing can make carbon copies read-only memory) store these data.But as IAP technologies are in core
Popularization in piece, while chip is used for flash (a kind of storage chip, the English full name of stored program：Flash EEPROM
Memory while) space is also increasing, price does not accordingly increase, and many designers are intended to (applying by IAP
It is programmable, English full name：In-Application programmable) function, electricity data is stored in internal flash.
Cost so can be both greatlyd save, can also improve the reliability of data-storing.
Since flash can only carry out page erasing, usual 512 byte of one page can not carry out some data repeatedly erasable.
In addition the erasable numbers of flash usually only 2~100,000 times compare the erasable number of EEPROM as 1,000,000 times, therefore store similary
Electricity, it is necessary to use more flash spaces.In the prior art when electric energy meter has electricity, internal RAM (English full name is utilized：
Random access memory, Chinese full name：Random access memory) storage electricity data, when detect will have a power failure when,
Electricity data in RAM is copied in flash.
In the prior art, when program has little time to respond power loss event, the loss of electricity data, and this be will result in
The electricity data of loss is uncontrollable, that is to say, that the time for having electricity operation is longer, if having little time to store when power down
Electricity data, the then electricity lost will be more.
Therefore, even if how to ensure that the erasing of flash does not interfere with depositing for electricity data when frequently electrically operated up and down
Storage is those skilled in the art's problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of electricity data storage method, system and a kind of electricity data storage device and
A kind of computer readable storage medium, it is ensured that even if when frequently electrically operated up and down, the erasing of flash does not all interfere with electricity
Measure the storage of data.
To achieve the above object, an embodiment of the present invention provides a kind of electricity data storage method, including：
When generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part integer storage number of pages,
And the decimal that the fractional part of the electricity data is calculated according to the integer part stores number of pages；
The integer part of the electricity data is stored to the integer and stores number of pages, fractional part is stored to the decimal
Store number of pages；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part of the electricity data
M pages be stored in the flash, M, N are the integer more than 1, and M is the integral multiple of N.
Wherein, the integer part of the electricity data is stored to the integer and stores number of pages, fractional part is stored to institute
Decimal storage number of pages is stated, including：
S221：The first address and offset address of number of pages are stored according to the decimal, obtains the fractional part of the electricity data
The storage address divided, and the fractional part is stored into the storage address；
S222：Judge whether the integer part changes；If so, into S223, if it is not, then entering S224；
S223：The integer storage number of pages of the integer part is inquired about, the integer part is stored to the integer and is stored
In the offset address of number of pages；
S224：Detect whether the integer storage number of pages is filled with；If so, put the erasing mark of the integer storage number of pages
Position.
Wherein, the idle fractional part of the electricity data is stored in Q pages in the flash, and Q is the integer more than 1.
Wherein, further include：
When detecting power down failure, the CF mantissa parts of the electricity data are stored into the flash.
Wherein, the unit quantity of electricity is 0.01 degree.
Wherein, if N=2, the electricity data storage method further includes：
S401：It detects after recovering data command, judging the integer data of the peak excursion address of integer storage number of pages is
It is no legal, if so, into S402, if it is not, then subtracting one by the peak excursion address, and reenter S401；
S402：Recover the integer data of the peak excursion address of integer storage number of pages；
S403：The decimals of page two that corresponding fraction data is calculated according to the integer data store number of pages, and described in recovery
Decimal stores the fraction data of number of pages.
Wherein, the fraction data of the decimal storage number of pages is recovered, including：
Judge whether the fraction data of the peak excursion address of the second page in the decimal of page two storage number of pages is legal；
If so, the first page in the detection decimal of page two storage number of pages whether there is valid data, if so, recovering
The legal fraction data of offset address maximum, the erasing flag bit of second page described in juxtaposition, if it is not, then recovering the second page
The legal fraction data of offset address maximum, the erasing flag bit of first page described in juxtaposition；
If it is not, the second page then detected in the decimal of page two storage number of pages whether there is valid data, if so, recovering
The legal fraction data of offset address maximum, the erasing flag bit of first page described in juxtaposition, if it is not, then set to 0 fraction data, and
Put the erasing flag bit of the first page and the second page.
To achieve the above object, an embodiment of the present invention provides a kind of electricity data storage system, including：
Computing module, for when generate unit quantity of electricity it is cumulative when, inquire about the integer part of current time electricity data
Integer stores number of pages, and stores number of pages according to the decimal of the fractional part of the integer part calculating electricity data；
Memory module stores number of pages, fractional part for storing the integer part of the electricity data to the integer
It stores to the decimal and stores number of pages；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part of the electricity data
M pages be stored in the flash, M, N are the integer more than 1, and M is the integral multiple of N.
To achieve the above object, an embodiment of the present invention provides a kind of electricity data storage device, including：
Memory, for storing computer program；
Processor is realized such as the step of above-mentioned electricity data storage method during for performing the computer program.
To achieve the above object, an embodiment of the present invention provides a kind of computer readable storage medium, the computer can
It reads to be stored with computer program on storage medium, be realized when the computer program is executed by processor as above-mentioned electricity data is deposited
Method for storing.
By above scheme, a kind of electricity data storage method provided in an embodiment of the present invention includes：It is single when generating
Position electricity it is cumulative when, the integer storage number of pages of the integer part of current time electricity data is inquired about, and according to the integer portion
Divide the decimal storage number of pages for the fractional part for calculating the electricity data；The integer part of the electricity data is stored to described
Integer stores number of pages, and fractional part stores to the decimal and stores number of pages；Wherein, the integer part of the electricity data is stored in
N pages in flash, the fractional part of the electricity data is stored in M pages in the flash, and M, N are the integer more than 1.
Electricity data storage method provided by the invention, using having the function of the flash of IAP, while stored program
Store energy data, often generate unit quantity of electricity it is cumulative when store an electricity data, it is ensured that the security of electricity data；It is right
It in the integer part and fractional part of electricity data, is stored respectively at least page two of flash, it is ensured that even if above and below frequently
When electrically operated, the erasing of flash does not all interfere with the storage of electricity data, and the electricity data stored will not occupy it is too many
Flash memory spaces.The invention also discloses a kind of electricity data storage system and a kind of electricity data storage devices and one kind
Computer readable storage medium equally can realize above-mentioned technique effect.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow chart of electricity data storage method disclosed by the embodiments of the present invention；
Fig. 2 is the flow chart of another electricity data storage method disclosed by the embodiments of the present invention；
Fig. 3 is the flow chart of flash disclosed by the embodiments of the present invention erasings；
Fig. 4 is the flow chart of another electricity data storage method disclosed by the embodiments of the present invention；
Fig. 5 is the flow chart of the recovery of another electricity data storage method fractional part disclosed by the embodiments of the present invention；
Fig. 6 is a kind of structure chart of electricity data storage system disclosed by the embodiments of the present invention；
Fig. 7 is a kind of structure chart of electricity data storage device disclosed by the embodiments of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
The embodiment of the invention discloses a kind of electricity data storage methods, it is ensured that even if when frequently electrically operated up and down,
The erasing of flash does not all interfere with the storage of electricity data.
Referring to Fig. 1, a kind of flow chart of electricity data storage method disclosed by the embodiments of the present invention, as shown in Figure 1, bag
It includes：
S101：When generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part integer storage
Number of pages, and number of pages is stored according to the decimal of the fractional part of the integer part calculating electricity data；
In specific implementation, electricity often generates the cumulative of unit quantity of electricity, can all store an electricity data, it is ensured that electricity
Data can never lose.In general, unit quantity of electricity is 0.01 degree, i.e., often generates cumulative, the storage one of 0.01 degree of electricity
Secondary electricity data.The concrete numerical value of unit quantity of electricity is not defined herein, those skilled in the art can be according to actual conditions
Flexibly set.
S102：The integer part of the electricity data is stored to the integer and stores number of pages, fractional part is stored to institute
State decimal storage number of pages；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part of the electricity data
M pages be stored in the flash, M, N are the integer more than 1, and M is the integral multiple of N.
In specific implementation, the integer part of electricity data and fractional part are respectively stored in depositing more than page 1 in flash
Storage is spatially, it is ensured that even if when frequently electrically operated up and down, the erasing of flash does not interfere with the storage of electricity data, that is, works as
When flash carries out the also erasing operation of certain one page, other storage numbers of pages can continue the storage operation of electricity data.
It is understood that since identical integer can correspond to multiple fractional parts, even unit quantity of electricity is 0.01 degree, phase
Same integer corresponds to 100 fractional parts, therefore, can be grouped fractional part according to integer part, is preferably five groups,
Each group of occupy flash memory spaces respectively at least page two.
When generate unit quantity of electricity it is cumulative when, first according to the integer part of electricity data inquire about integer part it is current whole
Number storage number of pages, and the corresponding decimal of fractional part is calculated according to integer part and stores number of pages, further according to decimal storage number of pages
First address and offset address calculate the storage address of fractional part, and the fractional part is stored into the storage address,
The integer part of number of pages storing electricity data is finally stored according to current integer.
The integer part of storing electricity data, it is necessary first to judge to generate unit quantity of electricity it is cumulative after, electricity data it is whole
Whether number part changes, if so, storing the integer part after variation to the offset address of integer storage number of pages, and adjusts
Whole offset address, will the offset address add one, and check the need for skipping；If the integer part of electricity data does not occur
Variation is then directly entered and the step of whether integer storage number of pages skips is checked, if so, putting the erasing of the integer storage number of pages
Flag bit, if it is not, then terminating flow.
On the basis of above-described embodiment, preferably, the idle fractional part storage of the electricity data
Q pages in the flash, Q is the integer more than 1.
When detecting power down failure, the CF mantissa parts of the electricity data are stored into the flash.
Electricity data storage method provided in an embodiment of the present invention, using having the function of the flash of IAP, in stored program
While store energy data, often generate unit quantity of electricity it is cumulative when store an electricity data, it is ensured that the peace of electricity data
Quan Xing；For the integer part and fractional part of electricity data, stored respectively at least page two of flash, it is ensured that even if
When frequently electrically operated up and down, the erasing of flash does not all interfere with the storage of electricity data, and the electricity data stored will not account for
With too many flash memory spaces.
The embodiment of the invention discloses a kind of electricity data storage methods, and compared with a upper embodiment, the present embodiment is to skill
Art scheme has made further instruction and optimization.Specifically：
Referring to Fig. 2, the flow chart of another kind electricity data storage method provided in an embodiment of the present invention, as shown in Fig. 2, bag
It includes：
S201：When generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part integer storage
Number of pages, and number of pages is stored according to the decimal of the fractional part of the integer part calculating electricity data；
For example, electricity data is made of six integer parts and two-decimal part, the storage mode of integer part is as follows
Shown in table, it is divided into the storages of page two, every page is stored 25 times, every time 3 parts of storage.
Table 1 has, idle integer part storage mode
The storage mode of active fractional part is as shown in the table, is divided into five groups, every group page two, page totally ten.
The correspondence of 2 active decimal of table and integer：
Idle fractional part occupies the memory spaces of page two of flash altogether, in addition, there are two the mantissa for being less than 0.01 degree
(CF mantissa) occupies one page memory space of flash altogether, is only preserved in power down.Storage format is：First character section is deposited
The CF0 mantissa of power component are stored up, the CF1 mantissa of the second section byte storage reactive component, the 3rd byte is CF0+CF1+0x33.
By mode stored above, for the maximum storage electricity of power component, integer part 25*2*20000
=10000000 times (degree), fractional part are 512*2*20000*5=102400000 times, i.e., 10240000 degree；For idle portion
The maximum storage electricity divided, idle decimal can only store 512*2*20000=20480000 times, i.e., 204800 degree.Idle portion
It point can only ensure 200,000 degree of memory space, power-off event have occurred after capacity of idle power is more than 200,000 degree, then fractional part
It may malfunction, in normal use, since power factor all can be very high, an idle simply small data, 200,000 degree
The idle requirement for being enough to ensure that user.
In conclusion for storing the FLASH space sizes of electricity for page 15, wherein electricity integer page 2, active decimal 10
Page, idle decimal page 2, CF mantissa page 1.To the different piece of electricity data using different storage modes, so since, even if
Electricity data of every 0.01 degree of storage, can also occupy less flash memory spaces.
S221：The first address and offset address of number of pages are stored according to the decimal, obtains the fractional part of the electricity data
The storage address divided, and the fractional part is stored into the storage address；
S222：Judge whether the integer part changes；If so, into S223, if it is not, then entering S224；
S223：The integer storage number of pages of the integer part is inquired about, the integer part is stored to the integer and is stored
In the offset address of number of pages；
S224：Detect whether the integer storage number of pages is filled with；If so, put the erasing mark of the integer storage number of pages
Position；If otherwise terminate flow.
In specific implementation, the erasing flow of flash is as shown in figure 3, for the reliability service of program, the wiping to flash
Division operation is completed by special module in program, and it is per second an erasing operation can only be at most done to flash, every time erasing before all
It to be severe in judgment to erasing voltage and address.The integer and decimal of electricity have page two to store data in turn simultaneously, so its
When middle one page is as data-storing page, have sufficient time to another page of progress erasing operation.
The embodiment of the invention discloses a kind of electricity data storage method, the recovery to electricity data after power down is further included,
Specifically, work as N=2, and referring to Fig. 4, the flow chart of another electricity data storage method provided in an embodiment of the present invention, such as Fig. 4
It is shown, including：
S401：It detects after recovering data command, judging the integer data of the peak excursion address of integer storage number of pages is
It is no legal, if so, into S402, if it is not, then subtracting one by the peak excursion address, and reenter S401；
S402：Recover the integer data of the peak excursion address of integer storage number of pages；
S403：The decimals of page two that corresponding fraction data is calculated according to the integer data store number of pages, and described in recovery
Decimal stores the fraction data of number of pages.
In specific implementation, to power on the recovery of data can be divided into three parts, i.e. the recovery of integer part, fractional part
Recover and recover less than the data of unit quantity of electricity.In the present embodiment, since integer part is divided to the storages of page two, and the mode stored
To be stored from low address to high address, when recovering integer part, it is necessary to be inquired about from high address to low address, first inquired
Part valid data is the integer part of the electricity data of last time storage, in the present embodiment, takes and judges to verify sum
Mode judges whether integer data is legal.
When recovering the electricity data of fractional part, the decimals of page two for calculating fractional part according to integer part first are deposited
Number of pages is stored up, then recovers the fraction data in this decimal storage number of pages of page two.Wherein, the decimal number of the decimal storage number of pages is recovered
According to, as shown in figure 5, including：
S501：Judge whether the fraction data of the peak excursion address of the second page in the decimal of page two storage number of pages closes
Method；If so, into S502；If it is not, then enter S503；
In specific implementation, whether can be that binary-coded decimal is sentenced by the fraction data for the peak excursion address for judging second page
Whether the disconnected fraction data is legal, since the data format after the erasing of flash is 0xff, if the fraction data is
Binary-coded decimal is then valid data, otherwise is illegal data.
S502：The first page in the decimal of page two storage number of pages is detected with the presence or absence of valid data, if so, recovering inclined
Move the legal fraction data of address maximum, the erasing flag bit of second page described in juxtaposition, if it is not, then recovering the inclined of the second page
Move the legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition；
In with implementation, if the fraction data of the peak excursion address of second page is valid data, illustrate second page
It is filled with, it is necessary to first page be retrieved from low address to high address with the presence or absence of valid data, if in the presence of the last one valid data
The as fractional part of the electricity data of last time storage, recovers the data, the erasing flag bit of juxtaposition second page；If it does not deposit
, then the legal fraction data of the offset address maximum of second page as last time storage electricity data fractional part,
The erasing flag bit of juxtaposition first page.
S502：The second page in the decimal of page two storage number of pages is detected with the presence or absence of valid data, if so, recovering inclined
Move the legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition, if it is not, then setting to 0 fraction data, juxtaposition
The erasing flag bit of the first page and second page.
In with implementation, if the fraction data of the peak excursion address of second page is not valid data, illustrate second page
It is not filled with, it is necessary to second page be retrieved from high address to low address with the presence or absence of valid data, if in the presence of first valid data
The as fractional part of the electricity data of last time storage, recovers the data, the erasing flag bit of juxtaposition first page；If it does not deposit
Then fraction data is being set to 0, the erasing flag bit of juxtaposition first page and second page.
It is understood that since CF mantissa are stored in fixed position, when recovering CF mantissa, if the 3rd byte=the first
A+the second byte+0x33 of byte, then it is assumed that data are legal, recover the data, juxtaposition erasing flag bit.
A kind of electricity data storage system provided in an embodiment of the present invention is introduced below, a kind of electricity described below
Measuring data-storage system can be cross-referenced with a kind of above-described electricity data storage method.
Referring to Fig. 6, a kind of structure chart of electricity data storage system provided in an embodiment of the present invention, as shown in fig. 6, bag
It includes：
Computing module 601, for when generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part
Integer storage number of pages, and the decimal for calculating according to the integer part fractional part of the electricity data stores number of pages；
Memory module 602 stores number of pages, fractional part for storing the integer part of the electricity data to the integer
Divide to store to the decimal and store number of pages；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part of the electricity data
M pages be stored in the flash, M, N are the integer more than 1.
Electricity data storage system provided in an embodiment of the present invention, using having the function of the flash of IAP, in stored program
While store energy data, often generate unit quantity of electricity it is cumulative when store an electricity data, it is ensured that the peace of electricity data
Quan Xing；For the integer part and fractional part of electricity data, stored respectively at least page two of flash, it is ensured that even if
When frequently electrically operated up and down, the erasing of flash does not all interfere with the storage of electricity data, and the electricity data stored will not account for
With too many flash memory spaces.
On the basis of above-described embodiment, preferably, the memory module 602 includes：
First storage unit for storing the first address and offset address of number of pages according to the decimal, obtains the electricity
The storage address of the fractional part of data, and the fractional part is stored into the storage address；
Judging unit, for judging whether the integer part changes；If so, start the work of the second storage unit
Make flow, if it is not, then starting the workflow of detection unit；
For inquiring about the integer of integer part storage number of pages, the integer part is deposited for second storage unit
It stores up into the offset address of integer storage number of pages；
The detection unit, for detecting whether the integer storage number of pages is filled with；If so, put the integer memory page
Several erasing flag bits.
On the basis of above-described embodiment, preferably, further include：
Power down module, for when detecting power down failure, storing the CF mantissa parts of the electricity data to described
In flash.
On the basis of above-described embodiment, preferably, if M=N=2, the electricity data storage system
System further includes：
Recover integer module, after detecting recovery data command, judge the peak excursion address of integer storage number of pages
Integer data it is whether legal, if so, recover integer storage number of pages peak excursion address integer data, if it is not, then will
The peak excursion address subtracts one, and restarts the workflow of the recovery integer module, until integer storage number of pages
The integer data of peak excursion address is legal, starts the workflow for recovering decimal module；
Recover decimal module, for calculating the decimal memory pages of page two of corresponding fraction data according to the integer data
Number, and recover the fraction data of the decimal storage number of pages.
On the basis of above-described embodiment, preferably, the recovery decimal module includes：
Computing unit stores number of pages for calculating the decimals of page two of corresponding fraction data according to the integer data；
Judging unit, for judging the decimal number of the peak excursion address of the second page in the decimal of page two storage number of pages
According to whether legal；
First recovery unit, for working as the decimal of the peak excursion address of the second page in the decimal of page two storage number of pages
When data are legal, the first page in the decimal of page two storage number of pages is detected with the presence or absence of valid data, if so, recovering offset
The legal fraction data of address maximum, the erasing flag bit of second page described in juxtaposition, if it is not, then recovering the offset of the second page
The legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition；
Second recovery unit, for working as the decimal of the peak excursion address of the second page in the decimal of page two storage number of pages
When data are illegal, the second page in the decimal of page two storage number of pages is detected with the presence or absence of valid data, if so, recovering inclined
Move the legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition, if it is not, then setting to 0 fraction data, juxtaposition
The erasing flag bit of the first page and second page.
Present invention also provides a kind of electricity data storage devices, referring to Fig. 7, a kind of electricity provided in an embodiment of the present invention
The structure chart of data storage device, as shown in fig. 7, comprises：
Memory 701, for storing computer program；
Processor 702, for performing computer program when, can realize the step of above-described embodiment provides.Certainly
The electricity data storage device can also include the components such as various network interfaces, power supply.
Electricity data storage device provided in an embodiment of the present invention, using having the function of the flash of IAP, in stored program
While store energy data, often generate unit quantity of electricity it is cumulative when store an electricity data, it is ensured that the peace of electricity data
Quan Xing；For the integer part and fractional part of electricity data, stored respectively at least page two of flash, it is ensured that even if
When frequently electrically operated up and down, the erasing of flash does not all interfere with the storage of electricity data, and the electricity data stored will not account for
With too many flash memory spaces.
Present invention also provides a kind of computer readable storage mediums, are stored thereon with computer program, the computer
Program can realize the step of above-described embodiment provides when being executed by processor.The storage medium can include：USB flash disk, movement
Hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), the various media that can store program code such as magnetic disc or CD.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Each embodiment is described by the way of progressive in specification, the highlights of each of the examples are with other realities
Apply the difference of example, just to refer each other for identical similar portion between each embodiment.For system disclosed in embodiment
Speech, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related part is referring to method part illustration
.It should be pointed out that for those skilled in the art, on the premise of the application principle is not departed from, also
Can to the application, some improvement and modification can also be carried out, these improvement and modification also fall into the application scope of the claims
It is interior.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of electricity data storage method, which is characterized in that including：
When generate unit quantity of electricity it is cumulative when, inquire about the integer storage number of pages of the integer part of current time electricity data, and root
The decimal that the fractional part of the electricity data is calculated according to the integer part stores number of pages；
The integer part of the electricity data is stored to the integer and stores number of pages, fractional part is stored to the decimal and stored
Number of pages；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part storage of the electricity data
M pages in the flash, M, N are the integer more than 1, and M is the integral multiple of N.
2. electricity data storage method according to claim 1, which is characterized in that deposit the integer part of the electricity data
Storage to the integer stores number of pages, and fractional part stores to the decimal and stores number of pages, including：
S221：The first address and offset address of number of pages are stored according to the decimal, obtains the fractional part of the electricity data
Storage address, and the fractional part is stored into the storage address；
S222：Judge whether the integer part changes；If so, into S223, if it is not, then entering S224；
S223：The integer storage number of pages of the integer part is inquired about, the integer part is stored to the integer and stores number of pages
Offset address in；
S224：Detect whether the integer storage number of pages is filled with；If so, put the erasing flag bit of the integer storage number of pages.
3. electricity data storage method according to claim 1, which is characterized in that the idle fractional part of the electricity data
Q pages be stored in the flash, Q are the integer more than 1.
4. electricity data storage method according to claim 1, which is characterized in that further include：
When detecting power down failure, the CF mantissa parts of the electricity data are stored into the flash.
5. electricity data storage method according to claim 1, which is characterized in that the unit quantity of electricity is 0.01 degree.
6. according to any one of the claim 1-5 electricity data storage methods, which is characterized in that if N=2, the electricity
Date storage method further includes：
S301：It detects after recovering data command, judges whether the integer data of the peak excursion address of integer storage number of pages closes
Method if so, into S302, if it is not, then subtracting one by the peak excursion address, and reenters S301；
S302：Recover the integer data of the peak excursion address of integer storage number of pages；
S303：The decimals of page two that corresponding fraction data is calculated according to the integer data store number of pages, and recover the decimal
Store the fraction data of number of pages.
7. electricity data storage method according to claim 6, which is characterized in that recover the decimal of the decimal storage number of pages
Data, including：
Judge whether the fraction data of the peak excursion address of the second page in the decimal of page two storage number of pages is legal；
If so, the first page in the detection decimal of page two storage number of pages whether there is valid data, if so, recovering offset
The legal fraction data of address maximum, the erasing flag bit of second page described in juxtaposition, if it is not, then recovering the offset of the second page
The legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition；
If it is not, the second page then detected in the decimal of page two storage number of pages whether there is valid data, if so, recovering offset
The legal fraction data of address maximum, the erasing flag bit of first page described in juxtaposition, if it is not, then setting to 0 fraction data, juxtaposition institute
State the erasing flag bit of first page and the second page.
8. a kind of electricity data storage system, which is characterized in that including：
Computing module, for when generate unit quantity of electricity it is cumulative when, inquire about current time electricity data integer part integer
Number of pages is stored, and number of pages is stored according to the decimal of the fractional part of the integer part calculating electricity data；
Memory module stores number of pages, fractional part storage for storing the integer part of the electricity data to the integer
Number of pages is stored to the decimal；
Wherein, the integer part of the electricity data is stored in N pages in flash, the fractional part storage of the electricity data
M pages in the flash, M, N are the integer more than 1, and M is the integral multiple of N.
9. a kind of electricity data storage device, which is characterized in that including：
Memory, for storing computer program；
Processor realizes the electricity data storage side as described in any one of claim 1 to 7 during for performing the computer program
The step of method.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program realizes the electricity data storage side as described in any one of claim 1 to 7 when the computer program is executed by processor
Method.
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