CN106569921A - Metering core clock processing method and apparatus for dual-core intelligent electric energy meter - Google Patents
Metering core clock processing method and apparatus for dual-core intelligent electric energy meter Download PDFInfo
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- CN106569921A CN106569921A CN201610902932.4A CN201610902932A CN106569921A CN 106569921 A CN106569921 A CN 106569921A CN 201610902932 A CN201610902932 A CN 201610902932A CN 106569921 A CN106569921 A CN 106569921A
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- Prior art keywords
- clock
- external clock
- internal clocking
- external
- electric energy
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Classifications
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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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1604—Error detection or correction of the data by redundancy in hardware where the fault affects the clock signals of a processing unit and the redundancy is at or within the level of clock signal generation hardware
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
Abstract
The invention provides a metering core clock processing method and apparatus for a dual-core intelligent electric energy meter. According to the metering core clock processing method and apparatus for the dual-core intelligent electric energy meter, a clock is obtained and then an effective initialized clock is obtained before the current clock is obtained, so that a judgment basis is provided for metering data after fault occurrence; and meanwhile, after an external clock is obtained, whether the external clock is abnormal or not is judged, so that a basis is provided for obtaining the effective and accurate current clock. The clock accuracy of the electric energy meter is ensured and a basis is provided for electric energy tariffing of subsequent time-of-use electricity price.
Description
Technical field
The present invention relates to the studying technological domain of intelligent electric energy meter, and more particularly, to a kind of twin-core intelligence electric energy
The metering core clock processing method and processing device of table.
Background technology
Intelligent electric energy meter is the instrument for recording power information, is that the power information of measure user is made that indelible tribute
Offer.
With the variation of record power information, the clock accuracy of intelligent electric energy meter can accurately be recorded for electric energy meter
Power information has great meaning, for example, for the power mode for collecting electric energy to user according to rate electric energy, accurately
Can the moment of record power consumption and generation electricity consumption be directly connected to and correctly calculate the information such as the electricity cost of user.
However, managing core and metering core as two independent functional process unit metering core masters of twin-core intelligent electric energy meter
Complete the metering of basic data, including forward and reverse electric energy and present clock etc., management core mainly completes charging, expense control, aobvious
Show, the function such as logout, and manage core and realize billing function according to the present clock that metering core is obtained, thus, metering core is obtained
The reliability for taking clock is particularly important, and in prior art, cannot obtain and work as when the peripheral RTC for being arranged at metering core is abnormal
During the front moment, electric energy meter will be unable to obtain present clock, so that there is the phenomenon of misregister.
Therefore, how to make metering core accurately be obtained the electricity consumption moment becomes the disaster that those skilled in the art face
Topic.
The content of the invention
To solve the above problems, according to an aspect of the present invention, there is provided during a kind of metering core of twin-core intelligent electric energy meter
Clock processing method, it is characterised in that include：
An external clock is obtained at the preset time period of interval；
Read internal clocking；
Judge whether the external clock obtains successfully；
If the external clock is obtained successfully, judge whether the external clock is abnormal；
If the external clock exception, the external clock is updated using the internal clocking, otherwise, when using outside
Clock updates the internal clocking.
Preferably, methods described also includes, if the external clock is not obtained successfully, and does not obtain successful number of times accumulation
During to a preset value, it is judged as external clock failure, electric energy meter recording clock event of failure, and active reporting.
Preferably, methods described also includes, if cannot successfully obtain external clock and cannot at the preset time period of interval
The internal clocking is read, then when using the current external clock of effective initialization clock recovery of memory storage and inside
Clock, traces to the source for metering core continuous data, while carrying out external clock and internal clocking failure active reporting.
Preferably, it is described to judge whether external clock is abnormal, including：
The reading number of success of the record of external clock is added 1；
Whether the reading number of success for judging the record reaches predetermined threshold value n；
If so, judge the difference of the external clock and initial time for obtaining whether less than (n/2-1) second：If so, when then outside
Clock exception；Wherein, the initial time is the time of the external clock for successfully reading for the first time；
Otherwise, external clock is without exception.
Preferably, the preset time period is 500ms.
Preferably, described before external clock of acquisition, also to include at the preset time period of interval, the electric energy meter is performed
Power on operation, obtains effectively initialization clock.
Preferably, the method for obtaining effectively initialization clock, including：
When upper electric, the power down time of external clock, internal clocking and internal storage storage is obtained；
Effectively initialization clock is determined in the external clock, the internal clocking and the power down time.
Preferably, it is described that effectively initialization is determined in the external clock, the internal clocking and the power down time
Clock, including：
Determine whether the power down time is effective；
Whether effectively initialization clock is effectively determined according to the power down time.
Preferably, it is described to determine efficient clock when power down time is effective, including：
Judge whether the internal clocking and the external clock are legal：
If the internal clocking and external clock are illegal, the power down time is effectively initialization clock；
If the external clock or the internal clocking are legal, the legal clock in external clock and internal clocking is determined；
If the legal clock is earlier than the power down time, or the power down time was earlier than the legal clock 6 months
More than, then the power down time is effective initialization clock, otherwise, when the legal clock is effective initialization
Clock；
If the external clock, the internal clocking are legal,：
If the external clock is later than the power down time, and the external clock is less than with the difference of the power down time
6 months, then external clock is effectively to initialize clock, otherwise, if internal clocking deducted the difference of external clock less than three months,
Internal clocking is effectively initialization clock.
Preferably, it is described when power down time is invalid, it is determined that clock is effectively initialized, including：
Judge whether the external clock is legal with the internal clocking；
If one of them is legal in the external clock and the internal clocking, the external clock with it is described internal when
Legal clock is effectively initialization clock in clock；
If the external clock is legal with the internal clocking, judge that internal clocking deducts the difference of external clock and is less than three
Individual month, if so, then external clock was effectively initialization clock, and otherwise, internal clocking is effectively initialization clock.
Preferably, when external power power-off cannot obtain internal clocking and external clock, access energy storage device, for for
Obtain the internal clocking and provide electric energy with external clock.
According to a further aspect in the invention, there is provided a kind of metering core clock processing meanss of twin-core intelligent electric energy meter, including：
External clock acquiring unit, for obtaining external clock；
Internal clocking reading unit, for reading internal clocking；
Judging unit, for judging to update internal clocking using external clock or updating external clock using internal clocking；
And
Refresh unit, for updating the external clock or internal clocking.
Preferably, described device also includes energy storage device, for being the acquisition internal clocking and outer during external power power-off
Portion's clock provides electric energy, and the energy storage device is Clock battery or super capacitor.
Preferably, present invention additionally comprises a kind of twin-core intelligent electric energy meter, it is characterised in that include：
Metering core, for completing the metering of forward and reverse electric energy；And
Metering core clock processing meanss, including：
External clock acquiring unit, for obtaining external clock；
Internal clocking reading unit, for reading internal clocking；
Judging unit, for judging to update internal clocking using external clock or updating external clock using internal clocking；
And
Refresh unit, for updating the external clock or internal clocking.
The metering core clock processing method and processing device of the twin-core intelligent electric energy meter that the present invention is provided, in interval preset time period
Obtain internal clocking and external clock simultaneously afterwards, and determine whether to obtain the whether success of external clock and internal clocking, when obtaining
Take external clock success, and external clock is not when having abnormal, refreshes internal clocking using external clock, otherwise, using inside
Clock refreshing external clock.Intelligent electric energy meter gets effective current time using effective guarantee of the present invention, is follow-up pipe
The charging of reason core provides effective reference frame.
Description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the flow process of the metering core clock management method of the twin-core intelligent electric energy meter according to the preferred embodiment of the present invention
Figure；
Fig. 2 is the flow chart of the method for judging that the external clock is whether abnormal according to the preferred embodiment of the present invention；
Fig. 3 is the flow chart of the acquisition effectively method of initialization clock according to the preferred embodiment of the present invention；And
The structural representation of the metering core Clock management device of Fig. 4 twin-core intelligent electric energy meters according to the preferred embodiment of the invention
Figure.
Specific embodiment
With reference now to accompanying drawing, the illustrative embodiments of the present invention are introduced, however, the present invention can be with many different shapes
Formula is not limited to embodiment described herein implementing, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.For showing for being illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements are attached using identical
Icon is remembered.
Unless otherwise stated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with the dictionary being usually used, is appreciated that and it
The linguistic context of association area has consistent implication, and is not construed as Utopian or excessively formal meaning.
Fig. 1 is the flow process of the metering core clock management method of the twin-core intelligent electric energy meter according to the preferred embodiment of the present invention
Figure.As shown in figure 1, the metering core clock management method of twin-core intelligent electric energy meter is from the beginning of step 101.In a step 101, twin-core
The metering core clock of intelligent electric energy meter obtains an external clock at the preset time period of interval.Preferably, the Preset Time
Section is 500ms.
Preferably, in a step 102, the internal clocking of reading power meters.It will be appreciated that the internal clocking is to set
The clock that the internal clocking acquiring unit inside MCU gets is equipped with, when MCU obtains internal while external clock is obtained
Clock, carries out judgement renewal, improves the accuracy rate for getting effective present clock.
Preferably, when external clock cannot be successfully obtained at the preset time period of interval and cannot read described internal
Clock, then using the current external clock of effective initialization clock recovery of memory storage and internal clocking, based on metering core
Amount data are traced to the source, while carrying out external clock and internal clocking failure active reporting.
Preferably, judge whether the external clock obtains successfully in step 103, if obtaining successfully, carry out step
104, if the external clock is not obtained successfully, and when not obtaining successful number of times and being accumulate to a preset value, when being judged as outside
Clock failure, electric energy meter recording clock event of failure, and active reporting.
Preferably, in step 104, judge whether the external clock is abnormal, if the external clock exception, using institute
State internal clocking to update the external clock, otherwise, with external clock the internal clocking is updated.
Fig. 2 is the flow chart of the method for judging that the external clock is whether abnormal according to the preferred embodiment of the present invention.Such as
Shown in Fig. 2, whether abnormal method 200 is from the beginning of step 201 to judge the external clock.In step 201, by external clock
The reading number of success of record add 1.Preferably, when being defined as into starting the time of the external clock for successfully reading for the first time
Between.
Preferably, in step 203, whether the reading number of success for judging the record reaches predetermined threshold value n, if so,
Step 204 is then carried out, otherwise, external clock is without exception.
Preferably, in step 204, whether the difference of the external clock and initial time for obtaining is judged less than (n/2-1) second,
If so, then external clock exception, otherwise, external clock is without exception.
Fig. 3 is the flow chart of the acquisition effectively method of initialization clock according to the preferred embodiment of the present invention.Such as Fig. 3 institutes
Show, the method 300 of acquisition effectively initialization clock is from the beginning of step 301.In step 301, twin-core intelligent electric energy meter is carried out
During power on operation, the power down time of the external clock, internal clocking and internal storage storage of electric energy meter is obtained.
Preferably, in step 302, determine have in the external clock, the internal clocking and the power down time
Effect initialization clock.
Preferably, it is described that effectively initialization is determined in the external clock, the internal clocking and the power down time
Clock, including：
Determine whether the power down time is effective；
Whether effectively initialization clock is effectively determined according to the power down time.
Preferably, it is described to determine efficient clock when power down time is effective, including：
Judge whether the internal clocking and the external clock are legal：
If the internal clocking and external clock are illegal, the power down time is effectively initialization clock；
If the external clock or the internal clocking are legal, the legal clock in external clock and internal clocking is determined；
If the legal clock is earlier than the power down time, or the power down time was earlier than the legal clock 6 months
More than, then the power down time is effective initialization clock, otherwise, when the legal clock is effective initialization
Clock；
If the external clock, the internal clocking are legal,：
If the external clock is later than the power down time, and the external clock is less than with the difference of the power down time
6 months, then external clock is effectively to initialize clock, otherwise, if internal clocking deducted the difference of external clock less than three months,
Internal clocking is effectively initialization clock.
Preferably, it is described when power down time is invalid, it is determined that clock is effectively initialized, including：
Judge whether the external clock is legal with the internal clocking；
If one of them is legal in the external clock and the internal clocking, the external clock with it is described internal when
Legal clock is effectively initialization clock in clock；
If the external clock is legal with the internal clocking, judge that internal clocking deducts the difference of external clock and is less than three
Individual month, if so, then external clock was effectively initialization clock, and otherwise, internal clocking is effectively initialization clock.
Preferably, when external power power-off cannot obtain internal clocking and external clock, access energy storage device, for for
Obtain the internal clocking and provide electric energy with external clock.
The twin-core intelligent electric energy meter metering core clock processing method, cannot successfully obtain upon power-up internal clocking and outer
During portion's clock, using the internal data store time, recover present clock and trace to the source for metering core continuous data, while entering row clock
Failure active reporting.In outer power cut-off, powered using energy storage device, energy storage device includes the Clock battery of low-power consumption and surpasses
Level capacitance energy storage equipment, dual power supply, low-power consumption battery is replaceable, it is ensured that clock power reliable power supply.Effectively prevent metering
Core obtain present clock mode is single or extraneous power-off and the caused problem that cannot obtain present clock, at the same time,
Effectively initialization clock is obtained before present clock is obtained, for the continuous data after breaking down basis for estimation is provided, and for number
According to offer node of tracing to the source, meanwhile, after external clock is obtained, judge whether external clock is abnormal, it is to obtain effectively accurately to work as
Front clock provides foundation.
The structural representation of the metering core Clock management device of Fig. 4 twin-core intelligent electric energy meters according to the preferred embodiment of the invention
Figure.As shown in figure 4, the metering core Clock management device 400 of twin-core intelligent electric energy meter is by external clock acquiring unit 401, inside
Clockreading unit 402, judging unit 403 and refresh unit 404 are constituted.Wherein, the external clock acquiring unit 401,
For obtaining external clock.
Preferably, the internal clocking reading unit 402, for reading internal clocking
Preferably, the judging unit 403, for judging to update internal clocking using external clock or adopting internal clocking
Update external clock；
Preferably, refresh unit 404, for updating the external clock or internal clocking.
Preferably, the metering core Clock management device 400 of the twin-core intelligent electric energy meter also includes energy storage device 405, uses
Electric energy is provided for the acquisition internal clocking and external clock when external power power-off, the energy storage device is Clock battery or super
Level electric capacity.
The clock processing meanss of the twin-core intelligent electric energy meter, arrange internal clocking acquiring unit, effectively more in metering core
Having mended caused intelligent electric energy meter when external clock acquiring unit cannot obtain present clock cannot obtain the defect of present clock,
Meanwhile, energy storage device is set, efficiently solve external power power-off and lead to not obtain the technical problem of effective present clock.
Preferably, present invention additionally comprises a kind of twin-core intelligent electric energy meter, including metering core and metering core clock process dress
Put, wherein, metering core, for completing the metering of forward and reverse electric energy；The metering core clock processing meanss, including：
External clock acquiring unit, for obtaining external clock；
Internal clocking reading unit, for reading internal clocking；
Judging unit, for judging to update internal clocking using external clock or updating external clock using internal clocking；
And
Refresh unit, for updating the external clock or internal clocking.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms for using in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly defined in addition wherein.It is all of to be all opened ground with reference to " one/described/be somebody's turn to do [device, component etc.] "
At least one of described device, component etc. example is construed to, unless otherwise expressly specified.Any method disclosed herein
Step all need not be run with disclosed accurate order, unless explicitly stated otherwise.
Claims (14)
1. the metering core clock processing method of a kind of twin-core intelligent electric energy meter, it is characterised in that include：
External clock is obtained at the preset time period of interval；
Read internal clocking；
Judge whether the external clock obtains successfully；
If the external clock is obtained successfully, judge whether the external clock is abnormal；
If the external clock exception, the external clock is updated using the internal clocking, otherwise, with external clock more
The new internal clocking.
2. metering core clock processing method according to claim 1, it is characterised in that if also including the external clock not
When obtaining successfully, and not obtaining successful number of times and be accumulate to a preset value, it is judged as external clock failure, electric energy meter recording clock
Event of failure, and active reporting.
3. metering core clock processing method according to claim 1, it is characterised in that also include：
If cannot successfully obtain external clock at the preset time period of interval and the internal clocking cannot be read, using storage
The current external clock of effective initialization clock recovery and internal clocking of device storage, traces to the source, together for metering core continuous data
Shi Jinhang external clocks and internal clocking failure active reporting.
4. metering core clock processing method according to claim 1, it is characterised in that described to judge whether external clock is different
Often, including：
The reading number of success of the record of external clock is added 1；
Whether the reading number of success for judging the record reaches predetermined threshold value n；
If so, judge the difference of the external clock and initial time for obtaining whether less than (n/2-1) second：If so, then external clock is different
Often；Wherein, the initial time is the time of the external clock for successfully reading for the first time；
Otherwise, external clock is without exception.
5. the metering core clock processing method of twin-core intelligent electric energy meter according to claim 1, it is characterised in that described default
Time period is 500ms.
6. metering core clock processing method according to claim 1, it is characterised in that described at the preset time period of interval
Before obtaining an external clock, also include：
The electric energy meter performs power on operation, obtains effectively initialization clock.
7. the metering core clock processing method of twin-core intelligent electric energy meter according to claim 6, it is characterised in that the acquisition
The method for effectively initializing clock, including：
When upper electric, the power down time of external clock, internal clocking and internal storage storage is obtained；
Effectively initialization clock is determined in the external clock, the internal clocking and the power down time.
8. metering core clock processing method according to claim 7, it is characterised in that described in the external clock, institute
State and determine in internal clocking and the power down time effectively initialization clock, including：
Determine whether the power down time is effective；
Whether effectively initialization clock is effectively determined according to the power down time.
9. metering core clock processing method according to claim 8, it is characterised in that characterized in that, described in power down
When time is effective, efficient clock is determined, including：
Judge whether the internal clocking and the external clock are legal：
If the internal clocking and external clock are illegal, the power down time is effectively initialization clock；
If the external clock or the internal clocking are legal, the legal clock in external clock and internal clocking is determined；
If the legal clock is earlier than the power down time, or the power down time was earlier than the legal clock more than 6 months,
Then the power down time is effective initialization clock, and otherwise, the legal clock is effective initialization clock；
If the external clock, the internal clocking are legal,：
If the external clock is later than the power down time, and the external clock is less than 6 with the difference of the power down time
Month, then external clock is effectively initialization clock, otherwise, interior if internal clocking deducted the difference of external clock less than three months
Portion's clock is effectively initialization clock.
10. metering core clock processing method according to claim 8, it is characterised in that described when power down time is invalid,
It is determined that clock is effectively initialized, including：
Judge whether the external clock is legal with the internal clocking；
If one of them is legal in the external clock and the internal clocking, in the external clock and the internal clocking
Legal clock is effectively initialization clock；
If the external clock is legal with the internal clocking, judge that internal clocking deducts the difference of external clock and is less than three
Month, if so, then external clock is effectively initialization clock, and otherwise, internal clocking is effectively initialization clock.
The metering core clock processing method of 11. twin-core intelligent electric energy meters according to claim 1, it is characterised in that work as dispatch from foreign news agency
Source power-off and when cannot obtain internal clocking and external clock, access energy storage device, for for the acquisition internal clocking with it is outer
Portion's clock provides electric energy.
A kind of metering core clock processing meanss of 12. twin-core intelligent electric energy meters, including：
External clock acquiring unit, for obtaining external clock；
Internal clocking reading unit, for reading internal clocking；
Judging unit, for judging to update internal clocking using external clock or updating external clock using internal clocking；And
Refresh unit, for updating the external clock or internal clocking.
13. metering core clock processing meanss according to claim 12, it is characterised in that also including energy storage device, be used for
Electric energy is provided for the acquisition internal clocking and external clock during external power power-off, the energy storage device is Clock battery or super
Electric capacity.
14. a kind of twin-core intelligent electric energy meters, it is characterised in that include：
Metering core, for completing the metering of forward and reverse electric energy；And
Metering core clock processing meanss, including：
External clock acquiring unit, for obtaining external clock；
Internal clocking reading unit, for reading internal clocking；
Judging unit, for judging to update internal clocking using external clock or updating external clock using internal clocking；And
Refresh unit, for updating the external clock or internal clocking.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610902932.4A CN106569921B (en) | 2016-10-17 | 2016-10-17 | A kind of metering core clock processing method and processing device of twin-core intelligent electric energy meter |
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|---|---|---|---|
| CN201610902932.4A CN106569921B (en) | 2016-10-17 | 2016-10-17 | A kind of metering core clock processing method and processing device of twin-core intelligent electric energy meter |
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Cited By (7)
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| CN106569164A (en) * | 2016-10-17 | 2017-04-19 | 国家电网公司 | Method and system for synchronization testing of electric quantity of double-core electric energy meter |
| CN107966673A (en) * | 2017-12-14 | 2018-04-27 | 宁波三星医疗电气股份有限公司 | A kind of simple effective clock of power meter management method |
| CN110736873A (en) * | 2019-10-29 | 2020-01-31 | 宁波三星医疗电气股份有限公司 | clock repairing method, power terminal and power system |
| CN111398675A (en) * | 2020-03-26 | 2020-07-10 | 杭州电瓦特信息技术有限责任公司 | Electric energy meter reading method, device and system |
| CN111856916A (en) * | 2019-04-30 | 2020-10-30 | 联合汽车电子有限公司 | External clock diagnosis method |
| CN112114616A (en) * | 2020-08-04 | 2020-12-22 | 深圳市宏电技术股份有限公司 | Switching method of real-time clock, electronic equipment and computer storage medium |
| CN114114134A (en) * | 2021-11-19 | 2022-03-01 | 广东电网有限责任公司汕尾供电局 | Time synchronization method of intelligent electric energy meter |
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| CN106569164A (en) * | 2016-10-17 | 2017-04-19 | 国家电网公司 | Method and system for synchronization testing of electric quantity of double-core electric energy meter |
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| CN111856916A (en) * | 2019-04-30 | 2020-10-30 | 联合汽车电子有限公司 | External clock diagnosis method |
| CN110736873A (en) * | 2019-10-29 | 2020-01-31 | 宁波三星医疗电气股份有限公司 | clock repairing method, power terminal and power system |
| CN110736873B (en) * | 2019-10-29 | 2022-02-25 | 宁波三星医疗电气股份有限公司 | Clock repairing method, power terminal and power system |
| CN111398675A (en) * | 2020-03-26 | 2020-07-10 | 杭州电瓦特信息技术有限责任公司 | Electric energy meter reading method, device and system |
| CN112114616A (en) * | 2020-08-04 | 2020-12-22 | 深圳市宏电技术股份有限公司 | Switching method of real-time clock, electronic equipment and computer storage medium |
| CN114114134A (en) * | 2021-11-19 | 2022-03-01 | 广东电网有限责任公司汕尾供电局 | Time synchronization method of intelligent electric energy meter |
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