CN107884608A - A kind of electric energy meter control system and clock correction method - Google Patents
A kind of electric energy meter control system and clock correction method Download PDFInfo
- Publication number
- CN107884608A CN107884608A CN201711082139.5A CN201711082139A CN107884608A CN 107884608 A CN107884608 A CN 107884608A CN 201711082139 A CN201711082139 A CN 201711082139A CN 107884608 A CN107884608 A CN 107884608A
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- temperature
- clock
- value
- module
- correction method
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
- G04F8/02—Apparatus for measuring unknown time intervals by electromechanical means using an electromechanical oscillator
Abstract
The present invention relates to technical field of semiconductors, more particularly to a kind of electric energy meter control system and clock correction method, including：The MEMS crystal oscillators of interior envelope, temperature sampling module, clock compensation module, clock measurement module and memory module；And a kind of clock correction method, including：Step S1, under the test environment of one first preset temperature value, handle to obtain corresponding temperature value and frequency compensation value by processing module；Step S2, the temperature of master chip is improved to one second preset temperature value, and in temperature-rise period, temperature value and frequency compensation value corresponding to record when often rising a fixed value；Step S3, standard curve is adjusted according to the temperature compensation value of record, fitting forms frequency compensation value in preset temperature range and corresponds to the actual curve of each temperature value, and actual curve is stored in memory module；Easily the real-time clock of chip can be compensated and corrected while realizing and sealed in crystal oscillator.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to a kind of interior envelope MEMS electric energy meters control system and clock school
Correction method.
Background technology
Electric energy meter is the instrument for measuring electric energy, also known as kilowatt-hour meter, energy meter, kilowatt-hour table, refers to the various electricity of measurement
The instrument of amount.
Current electric energy meter control chip typically all uses external crystal oscillator, because if using the crystal oscillator of interior envelope, crystal oscillator body
The shortcomings of product is bigger, packaging technology flow is more, clock accuracy correction is complex, long-time stability are poor.Specifically, electric energy
When the censorship of table real-time clock is given a mark, the real-time clock of interior envelope crystal oscillator chip, which need to pass through Supplements, could meet censorship clock accuracy
It is required that and correction environmental requirement harshness, temperature are needed the long period stable, could carry out real-time clock precision correction.Secondly
The volume of interior envelope crystal oscillator is relatively large, can not be encapsulated in small package chip.Finally by being placed on low temperature or height for a long time
Under warm environment, easily cause clock accuracy to be deteriorated, and be not easy to recover.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of electric energy meter control system, including a master chip, wherein, the master
The MEMS crystal oscillators for producing initial clock signal are packaged with chip；Also include：
Temperature sampling module, for gathering the temperature of the master chip and exporting the temperature letter for the size for reflecting the temperature
Number；
Clock compensation module, the MEMS crystal oscillators and the temperature sampling module are connected respectively, it is described initial for receiving
Clock signal and the temperature signal, and the initial clock signal is compensated according to the temperature signal, output one is mended
Clock signal is repaid, while exports the temperature signal；
Clock measurement module, it is connected with the standard time clock module outside the master chip, for by the standard time clock
The standard clock signal output of module output；
Memory module；
Processing module, the clock compensation module, the clock measurement module and the memory module is connected respectively, to connect
Receive and be fitted to form corresponding each temperature value according to the compensating clock signal, the temperature signal and the standard clock signal
Frequency compensation value actual curve, and stored in the memory module；
The processing module is also connected with the load blocks of outside, with described actual bent according to what is stored in the memory module
The operation of load blocks described in the clock frequency control that line obtains.
Above-mentioned electric energy meter control system, wherein, the load blocks pass through a bus extender and the processing module
Connection.
Above-mentioned electric energy meter control system, wherein, the MEMS crystal oscillators are MEMS crystal oscillators.
A kind of clock correction method, wherein, applied to as above any described electric energy meter control system, the electric energy meter control
The frequency compensation value in a preset temperature range is prestored in the memory module of system processed and corresponds to the temperature value
Standard curve；The clock correction method includes：
Step S1, under the test environment of one first preset temperature value, handle to obtain by the processing module corresponding to
The temperature value and the frequency compensation value；
Step S2, the temperature of the master chip is improved to one second preset temperature value, and in temperature-rise period, often risen
The temperature value and the frequency compensation value corresponding to record during one fixed value；
Step S3, the standard curve is adjusted according to the temperature compensation value of record, fitting forms described pre-
If the frequency compensation value corresponds to the actual curve of each temperature value in temperature range, and the actual curve is stored
In the memory module.
Above-mentioned clock correction method, wherein, in the step S2, the specific method for controlling heating is：
Control the load capacity of the load blocks at the uniform velocity to increase, at regular intervals the time recorded so that during record
The temperature value that the temperature value of the master chip once records earlier above rises a fixed value.
Above-mentioned clock correction method, wherein, the preset temperature range is [- 40 DEG C, 80 DEG C].
Above-mentioned clock correction method, wherein, first preset temperature value is 22~24 DEG C.
Above-mentioned clock correction method, wherein, second preset temperature value is 27~29 DEG C.
Beneficial effect：A kind of electric energy meter control system proposed by the present invention and clock correction method, realize envelope in crystal oscillator
Easily the real-time clock of chip can be compensated and corrected simultaneously.
Brief description of the drawings
Fig. 1 is the structure principle chart of electric energy meter control system in one embodiment of the invention；
Fig. 2 is the step schematic diagram of clock correction method in one embodiment of the invention.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment one
In a preferred embodiment, as shown in Figure 1, it is proposed that a kind of electric energy meter control system, including a master chip,
Wherein, the MEMS crystal oscillators 1 for producing initial clock signal are packaged with master chip；It can also include：
Temperature sampling module 10, for gathering the temperature of master chip and exporting the temperature signal of the size of reflection temperature；
Clock compensation module 20, MEMS crystal oscillators 1 and temperature sampling module 10 is connected respectively, for receiving initial clock signal
And temperature signal, and initial clock signal is compensated according to temperature signal, a compensating clock signal is exported, while export temperature
Spend signal；
Clock measurement module 30, it is connected with the standard time clock module outside master chip, for standard time clock module is defeated
The standard clock signal output gone out；
Memory module 40；
Processing module 50, clock compensation module 20, clock measurement module 30 and memory module 40 are connected respectively, to receive simultaneously
The reality for the frequency compensation value to form corresponding each temperature value is fitted according to compensating clock signal, temperature signal and standard clock signal
Border curve, and stored in memory module 40；
Processing module 50 be also connected with outside load blocks, with arrived according to the actual curve stored in memory module 40 when
The operation of clock FREQUENCY CONTROL load blocks.
In above-mentioned technical proposal, the standard clock signal that clock measurement module 30 gathers can be used as reference, and clock is mended
The compensating clock signal of the output of module 20 is repaid compared with standard clock signal, MEMS crystal oscillators 1 can be obtained and mended through excess temperature
Repay later situation；Standard curve of the frequency compensation value on temperature value can also be stored with memory module, actual curve can
Be according to compensating clock signal, temperature signal and standard clock signal gather limited quantity temperature value and frequency compensation value
What is obtained is adjusted to standard curve；Based on the real-time clock electric energy meter control chip of encapsulation technique in MEMS, the core
Piece can provide very high clock accuracy in technical grade temperature range, and another side is easy to encapsulation and packaging cost is than common interior envelope
Crystal oscillator is low.Because of the small volume of MEMS crystal oscillators 1, interior being enclosed in small package chip, key closely can be attached in chip die, and
The function of chip is not influenceed.And the temperature hysteresis influence amount of the electric energy meter control chip of interior envelope MEMS crystal oscillators 1 0.02ppm with
Interior, intense environment temperature change influences very little to clock accuracy, so clock accuracy can be corrected quickly；On interior envelope MEMS crystal oscillators
Electric energy meter control chip technology：MEMS crystal oscillators 1 are encapsulated on the wafer of chip and by its close contact of colloid, purpose is in order to protect
Card MEMS changes with the environmental change of chip die, such as the temperature and the temperature one of MEMS crystal oscillators 1 of temperature sensor collection
Cause.(volume is because the small volume of MEMS crystal oscillators 1 again：420um*380um*120um), the temperature of MEMS crystal oscillators 1 can ring quickly
The temperature change of the wafer of chip is answered, therefore high/low-temperature impact is smaller on the influence of MEMS crystal oscillator frequencies.In MEMS drive modules
Containing with frequency compensation module, can regulating frequency offset in time, so as to export accurately frequency values.
In a preferred embodiment, load blocks can be connected by a bus extender 60 with processing module 50.
In a preferred embodiment, MEMS crystal oscillators 1 can be MEMS (Micro-electromechanical
Systems microelectromechanical systems, abbreviation MEMS) crystal oscillator.
Embodiment two
In a preferred embodiment, as shown in Figure 2, it is also proposed that a kind of clock correction method, wherein it is possible to using
It can be prestored in electric energy meter control system as shown in Figure 1, the memory module 40 of electric energy meter control system in a default temperature
Spend the standard curve that range of frequencies offset corresponds to temperature value；Clock correction method can include：
Step S1, under the test environment of one first preset temperature value, handled by processing module 50 and obtain corresponding temperature
Angle value and frequency compensation value；
Step S2, the temperature of master chip is improved to one second preset temperature value, and in temperature-rise period, it is solid often to rise one
Temperature value and frequency compensation value corresponding to record during definite value；
Step S3, standard curve is adjusted according to the temperature compensation value of record, fitting is formed in preset temperature range
Frequency compensation value corresponds to the actual curve of each temperature value, and actual curve is stored in memory module 50.
Solve variety of problems of the interior envelope crystal oscillator in terms of clock correction using above-mentioned clock correction method, so that interior
The technology of envelope crystal oscillator is able to be applied in electric energy meter control chip.
In a preferred embodiment, in step S2, the specific method for controlling heating is：
Control load blocks load capacity at the uniform velocity increase, at regular intervals the time recorded so that main core during record
The temperature value that the temperature value of piece once records earlier above rises a fixed value.
In a preferred embodiment, preset temperature range is [- 40 DEG C, 80 DEG C], in the temperature range, it is desirable to every
Individual temperature value is required for being corresponding with a temperature compensation value, so that having corresponding clock frequency under each temperature value.
In a preferred embodiment, the first preset temperature value can be 22~24 DEG C, for example, 22 DEG C, or 23 DEG C,
Or 24 DEG C etc..
In a preferred embodiment, the second preset temperature value is 27~29 DEG C, for example, 27 DEG C, or 28 DEG C, or 29
DEG C etc..
In summary, a kind of electric energy meter control system proposed by the present invention and clock correction method, including：Temperature sampling mould
Block, clock compensation module, clock measurement module and memory module；And a kind of clock correction method, above-mentioned electric energy meter control system
Unite, the frequency compensation value in a preset temperature range is prestored in the memory module of electric energy meter control system and corresponds to temperature value
Standard curve；Clock correction method includes：Step S1, under the test environment of one first preset temperature value, pass through processing module
Processing obtains corresponding temperature value and frequency compensation value；Step S2, the temperature of master chip is improved to one second preset temperature value,
And in temperature-rise period, temperature value and frequency compensation value corresponding to record when often rising a fixed value；Step S3, according to record
Temperature compensation value is adjusted to standard curve, and fitting forms frequency compensation value in preset temperature range and corresponds to each temperature value
Actual curve, and actual curve is stored in memory module；Can be easily to chip while realizing and sealed in crystal oscillator
Real-time clock is compensated and corrected.
By explanation and accompanying drawing, the exemplary embodiments of the specific structure of embodiment are given, it is smart based on the present invention
God, it can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, after reading described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.Weighing
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (7)
1. a kind of electric energy meter control system, including a master chip, it is characterised in that be packaged with the master chip for producing just
The MEMS crystal oscillators of beginning clock signal；Also include：
Temperature sampling module, for gathering the temperature of the master chip and exporting the temperature signal for the size for reflecting the temperature；
Clock compensation module, the MEMS crystal oscillators and the temperature sampling module is connected respectively, for receiving the initial clock
Signal and the temperature signal, and the initial clock signal is compensated according to the temperature signal, when output one compensates
Clock signal, while export the temperature signal；
Clock measurement module, it is connected with the standard time clock module outside the master chip, for by the standard time clock module
The standard clock signal output of output；
Memory module；
Processing module, the clock compensation module, the clock measurement module and the memory module are connected respectively, to receive simultaneously
The frequency to form corresponding each temperature value is fitted according to the compensating clock signal, the temperature signal and the standard clock signal
The actual curve of rate offset, and stored in the memory module；
The processing module is also connected with the load blocks of outside, to be obtained according to the actual curve stored in the memory module
The operation of load blocks described in the clock frequency control arrived.
2. electric energy meter control system according to claim 1, it is characterised in that the load blocks pass through a bus extension
Device is connected with the processing module.
3. a kind of clock correction method, it is characterised in that control system applied to the electric energy meter as described in claim 1~2 is any
Unite, the frequency compensation value pair in a preset temperature range is prestored in the memory module of the electric energy meter control system
The standard curve of temperature value described in Ying Yu；The clock correction method includes：
Step S1, under the test environment of one first preset temperature value, by the processing module handle to obtain corresponding to it is described
Temperature value and the frequency compensation value；
Step S2, the temperature of the master chip is improved to one second preset temperature value, and in temperature-rise period, it is solid often to rise one
The temperature value and the frequency compensation value corresponding to record during definite value；
Step S3, the standard curve is adjusted according to the temperature compensation value of record, fitting forms the default temperature
The frequency compensation value corresponds to the actual curve of each temperature value in the range of degree, and the actual curve is stored in into institute
State in memory module.
4. clock correction method according to claim 3, it is characterised in that in the step S2, control the specific of heating
Method is：
Control the load capacity of the load blocks at the uniform velocity to increase, at regular intervals the time recorded so that described in during record
The temperature value that the temperature value of master chip once records earlier above rises a fixed value.
5. clock correction method according to claim 3, it is characterised in that the preset temperature range for [- 40 DEG C, 80
℃]。
6. clock correction method according to claim 3, it is characterised in that first preset temperature value is 22~24
℃。
7. clock correction method according to claim 3, it is characterised in that second preset temperature value is 27~29
℃。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082139.5A CN107884608B (en) | 2017-11-02 | 2017-11-02 | Electric energy meter control system and clock correction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082139.5A CN107884608B (en) | 2017-11-02 | 2017-11-02 | Electric energy meter control system and clock correction method |
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| Publication Number | Publication Date |
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| CN107884608A true CN107884608A (en) | 2018-04-06 |
| CN107884608B CN107884608B (en) | 2020-10-23 |
Family
ID=61779128
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Cited By (7)
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|---|---|---|---|---|
| CN110729985A (en) * | 2018-07-17 | 2020-01-24 | 中芯国际集成电路制造(北京)有限公司 | Clock signal generating circuit and electronic equipment |
| CN111796235A (en) * | 2020-06-28 | 2020-10-20 | 司浩天 | Assessment method for gateway table with high utilization rate |
| CN111934678A (en) * | 2020-09-28 | 2020-11-13 | 深圳英集芯科技有限公司 | Method for automatically calibrating clock frequency in chip and related product |
| CN112229469A (en) * | 2020-10-20 | 2021-01-15 | 苏州工业园区清源华衍水务有限公司 | Remote-transmission valve-controlled water meter |
| CN112383301A (en) * | 2020-10-16 | 2021-02-19 | 歌尔科技有限公司 | Method and device for calibrating clock frequency of crystal oscillator and electronic equipment |
| CN114089258A (en) * | 2021-11-10 | 2022-02-25 | 许继集团有限公司 | Clock acceleration simulation operation method and system for intelligent electric energy meter |
| CN114167343A (en) * | 2021-12-03 | 2022-03-11 | 深圳友讯达科技股份有限公司 | Smart electric meter crystal oscillator frequency adjusting method based on exhaustion |
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| CN110729985A (en) * | 2018-07-17 | 2020-01-24 | 中芯国际集成电路制造(北京)有限公司 | Clock signal generating circuit and electronic equipment |
| CN110729985B (en) * | 2018-07-17 | 2023-04-25 | 中芯国际集成电路制造(北京)有限公司 | Clock signal generation circuit and electronic equipment |
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| CN114089258A (en) * | 2021-11-10 | 2022-02-25 | 许继集团有限公司 | Clock acceleration simulation operation method and system for intelligent electric energy meter |
| CN114089258B (en) * | 2021-11-10 | 2023-12-26 | 河南源网荷储电气研究院有限公司 | Clock acceleration simulation operation method and system for intelligent electric energy meter |
| CN114167343A (en) * | 2021-12-03 | 2022-03-11 | 深圳友讯达科技股份有限公司 | Smart electric meter crystal oscillator frequency adjusting method based on exhaustion |
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| CN107884608B (en) | 2020-10-23 |
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