CN109752642A - A kind of clock module calibration method and its system, equipment, storage medium - Google Patents
A kind of clock module calibration method and its system, equipment, storage medium Download PDFInfo
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- CN109752642A CN109752642A CN201811592645.3A CN201811592645A CN109752642A CN 109752642 A CN109752642 A CN 109752642A CN 201811592645 A CN201811592645 A CN 201811592645A CN 109752642 A CN109752642 A CN 109752642A
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Abstract
The invention discloses a kind of clock module calibration method and its systems, equipment, storage medium, the present invention is by obtaining by multiple time errors of correcting time clock module and reference clock, and after rejecting the exceptional value in time error, it is compensated according to time error and by the compensation rate calculation formula acquisition compensation rate of correcting time clock module, overcome and clock module calibration exists in the prior art success rate is low and the technical problem with high costs of clock module, it realizes and clock module is calibrated, and due to eliminating exceptional value, improve calibration success rate, the cost of clock module can also be reduced.
Description
Technical field
The present invention relates to clock domain, especially a kind of clock module calibration method and its system, equipment, storage medium.
Background technique
The abbreviation of real-time clock is RTC (Real_Time Clock).RTC is integrated circuit, commonly referred to as clock chip.
With the progress of mankind's science and technology, miscellaneous electronic product has come into huge numbers of families.And in these types
In numerous electronic products, clock circuit is one of essential module.Such as the electric energy meter in electric instrument industry,
Collector, terminal and concentrator devices.And real-time timepiece chip is the consumer electronics being most widely used in daily life
One of product.It provides accurate real-time time for people, or provides accurate time reference for electronic system, in real time at present
Clock chip mostly uses greatly the higher crystal oscillator of precision as clock source.Some clock chips are in order in main power source power down
When, it can also work, external battery is needed to power.But the core of any real-time clock is all crystal oscillator, crystal oscillator frequency is
32768Hz.It provides the accurately real base signal with low-power consumption for frequency counter.It can be used for generating the second, point, when, day
Etc. information.In order to ensure the long-term accuracy of clock, crystal oscillator must be worked normally, and be not adequately protected against interference.The crystal oscillator of RTC divides again
Are as follows: external crystal-controlled oscillation and built-in crystal oscillator.But the characteristic --- -- temperature compensation curve no matter which kind of crystal oscillator has its exclusive is in factory
Preceding and correct time is set time.Usual producer is that point carries out modified R TC clock chip on the basis of temperature is 23 degrees Celsius
Exact value.
At present there are two types of the calibration methods of clock chip:
One, the clock chip being calibrated directly is bought, is welded in instrument, it is with high costs.
Two, the module chip circuit pin to school is accessed in standard time clock error metric source, waits dozens of instrument to be measured
After the Watch Error period (- 40 seconds or so about 20 seconds times), offset is calculated by standard clock source, it is then soft by computer
The value is read compensation in by school instrument by part control.The dozens of meters under test error period why is waited, is because logical
Normal crystal oscillator frequency is 32768Hz, and this crystal oscillator advantage is cheap, and small power consumption, and the disadvantage is that frequency is excessively slow, it needs to compensate
Number is more to be can be only achieved accurately.And according to the Lap Time of the fixed tested instrument of sampling, pass through common apparatus clocking error instrument
It calculates, return error value.It is accurate that this method requires the equipment clock circuit module being calibrated to stablize, and there can be no the busts that jumps
Value, and requirement of the such case obviously to civilian instrumentation is excessively high.Often by calibration equipment by itself embedded software program
With the limitation of hardware circuit, once it will appear maximum and minimum in varying numbers in the period of school.Cause finally to count
The result of calculation will be overproof, and this mistake is just found when instrument is by subsequent detection, is largely influenced in this way
Production efficiency.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to provide a kind of clock module calibration method and its system, equipment, storage medium, for calibrating clock module, with
Calibration success rate is improved, cost is reduced.
The technical scheme adopted by the invention is that:
In a first aspect, the present invention provides a kind of clock module calibration method, comprising the following steps:
Error obtaining step is obtained by multiple time errors of correcting time clock module and reference clock；
Different value rejects step, rejects the exceptional value in the time error；
Offset obtaining step is obtained according to described by the compensation rate calculation formula of correcting time clock module and the time error
The compensation rate by correcting time clock module；
Calibration steps, according to the compensation rate to it is described compensated by correcting time clock module it is described by correcting time clock mould to calibrate
Block.
Further, the offset obtaining step specifically includes:
Obtain the average value of multiple time errors；
It is obtained according to the average value and the compensation rate calculation formula by correcting time clock module described by correcting time clock module
Compensation rate.
Second aspect, the present invention provide a kind of clock module calibration system, comprising:
Error acquiring unit, for obtaining multiple time errors by correcting time clock module and reference clock；
Different value culling unit, for rejecting the exceptional value in the time error；
Offset acquiring unit, for according to the compensation rate calculation formula and the time error by correcting time clock module
Obtain the compensation rate by correcting time clock module；
Calibration unit, for according to the compensation rate to it is described compensated by correcting time clock module with calibrate it is described by school when
Clock module.
Further, the error acquiring unit is clocking error instrument, the clocking error instrument and described by correcting time clock mould
Block connection.
Further, the clock module calibration system further includes serial server, and the clocking error instrument passes through described
Serial server described is connect with multiple by correcting time clock module.
Further, described to be arranged by correcting time clock module in electric energy meter, concentrator, data collector or distribution transformer
In.
Further, described by correcting time clock module includes 7406RTC single module, 7406RTC Dual module or 8990RTC mould
Block.
Further, the different value culling unit, the offset acquiring unit, the calibration unit are computer.
The third aspect, the present invention provide a kind of clock module calibrator (-ter) unit, comprising:
At least one processor；And the memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes, so that at least one described processor is able to carry out the clock module calibration method.
Fourth aspect, the present invention provide a kind of computer readable storage medium, the computer-readable recording medium storage
There are computer executable instructions, the computer executable instructions are used to that computer to be made to execute the clock module calibration side
Method.
The beneficial effects of the present invention are:
The present invention is by obtaining by multiple time errors of correcting time clock module and reference clock, and in rejecting time error
Exceptional value after, according to time error and by correcting time clock module compensation rate calculation formula obtain compensation rate compensate, overcome
Clock module calibration exists in the prior art, and success rate is low and the technical problem with high costs of clock module, realizes to clock
Module is calibrated, and due to eliminating exceptional value, improves calibration success rate, moreover it is possible to reduce the cost of clock module.
In addition, the present invention is also connect with multiple by correcting time clock module by using serial server, it can be simultaneously to multiple
It is calibrated by correcting time clock module, improves calibration efficiency.
Detailed description of the invention
Fig. 1 is an a kind of specific embodiment flow chart of clock module calibration method in the present invention；
Fig. 2 is an a kind of specific embodiment structural schematic diagram of clock module calibration system in the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Embodiment 1
It is an a kind of specific embodiment flow chart of clock module calibration method, Yi Zhongshi in the present invention with reference to Fig. 1, Fig. 1
Clock modular calibration method, comprising the following steps:
Error obtaining step is obtained by multiple time errors of correcting time clock module and reference clock；
Different value rejects step, rejects the exceptional value in multiple time errors, weed out because equipment poor contact or by
Unreasonable time error value caused by correcting time clock module performance is bad；
Offset obtaining step, according to by the compensation rate calculation formula and time error (excluding outlier of correcting time clock module
Time error afterwards) it obtains by the compensation rate of correcting time clock module；Specifically, the average value for obtaining multiple time errors, according to meter
It obtained average value and is obtained by the compensation rate calculation formula of correcting time clock module by the compensation rate of correcting time clock module；
Calibration steps is compensated according to compensation rate to by correcting time clock module to calibrate by correcting time clock module.
It is realized by above-mentioned calibration method and clock module is calibrated, due to eliminating exceptional value, improve clock
The calibration success rate of module, improves the quality of clock module, does not need to buy the high clock module of calibrated good price, when reduction
The cost of clock module overcomes and clock module calibration exists in the prior art success rate is low and the skill with high costs of clock module
Art problem.
Embodiment 2
It is proposed that embodiment 2, embodiment 2 provide a kind of clock module calibration system based on embodiment 1, comprising:
Error acquiring unit, for obtaining multiple time errors by correcting time clock module and reference clock；
Different value culling unit, for rejecting the exceptional value in time error；
Offset acquiring unit, for obtaining according to by the compensation rate calculation formula and time error of correcting time clock module by school
The compensation rate of clock module；
Calibration unit, for being compensated according to compensation rate to by correcting time clock module to calibrate by correcting time clock module.
It is an a kind of specific embodiment structural schematic diagram of clock module calibration system in the present invention with reference to Fig. 2, Fig. 2, accidentally
Poor acquiring unit uses clocking error instrument, and different value culling unit, offset acquiring unit, calibration unit are computer, computer
It is connect with clocking error instrument, computer, clocking error instrument are connect with by correcting time clock module.Include by correcting time clock module
7406RTC single module, 7406RTC Dual module or 8990RTC module.Program when being stored with the school RTC in computer, and support more
The concurrent communication modes (UDP/IP, serial ports) of kind.The RTC backoff algorithm of different clocks module is different, i.e., different clock modules
Compensation rate calculation formula is different.Clock compensation is targetedly carried out according to different clock modules, is avoided to clocking error
The excessively high dependence of instrument.It can be and be arranged in electric energy meter, concentrator, data collector or distribution transformer by correcting time clock module
In clock module.In addition, clock module calibration system further includes serial server (not shown), clocking error instrument passes through serial ports
Server is connect with multiple by correcting time clock module.It is connect with multiple by correcting time clock module by using serial server, Ke Yitong
When calibrated to multiple by correcting time clock module, improve calibration efficiency.
With reference to Fig. 2, during actual alignment, according to the time error data that clocking error instrument provides, computer selects automatically
It takes the time error value for participating in offset operation to obtain compensation rate, is compensated further according to compensation rate to by correcting time clock module.
Operating process when specific multi-clock module school is as follows:
1, it reads by the address of correcting time clock module
2, the parameter information of clocking error instrument, such as number of channel, bus address, meter constant, worst error value, error are set
Lap Time.Here different with traditional method to be, error Lap Time is that fixation writes 1, rather than writes 30 or bigger number.
3, calculate the error finally to be compensated: computer controls the cycle operation of clocking error instrument 30 times, and clocking error instrument obtains
The time error by correcting time clock module and reference clock is taken, number is more, calibrates timeliness that is more accurate, but considering production operation
Property, generally according to clock module the characteristics of, can just calibrate completely for the operation of clocking error instrument 20 times.Get 20 times mistakes
After difference, the software of computer weed out because equipment poor contact or by correcting time clock module performance it is bad caused by it is unreasonable
Time error value, then carry out remaining time error value that final offset is calculated.Specifically, when calculating remaining
Between error amount mean value, then the compensation rate calculation formula according to different by correcting time clock module calculate compensation rates.Such as 7406RTC
The compensation rate calculation formula of single module is (tValue*32768*20) %0xFF, and the compensation rate of 7406RTC Dual module calculates public affairs
Formula is (tValue*32768*336) %0xFF, and the compensation rate calculation formula of another 8990RTC module is tValue*
86400/-0.08, wherein tValue is the mean value of the time error after excluding outlier.
Embodiment 3
A kind of clock module calibrator (-ter) unit, comprising:
At least one processor；And the memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
A processor executes, so that at least one described processor is able to carry out the clock module calibration method.Clock module school
The specific descriptions of quasi- method are repeated no more referring to the description of embodiment 1.
Embodiment 4
A kind of computer readable storage medium, the computer-readable recording medium storage have computer executable instructions,
The computer executable instructions are used to that computer to be made to execute the clock module calibration method.Clock module calibration method
The description referring to embodiment 1 is specifically described, is repeated no more.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of clock module calibration method, which comprises the following steps:
Error obtaining step is obtained by multiple time errors of correcting time clock module and reference clock；
Different value rejects step, rejects the exceptional value in the time error；
Offset obtaining step, according to described described in the compensation rate calculation formula of correcting time clock module and time error acquisition
By the compensation rate of correcting time clock module；
Calibration steps, according to the compensation rate to it is described compensated by correcting time clock module it is described by correcting time clock module to calibrate.
2. clock module calibration method according to claim 1, which is characterized in that the offset obtaining step specifically wraps
It includes:
Obtain the average value of multiple time errors；
According to the average value and described the benefit by correcting time clock module is obtained by the compensation rate calculation formula of correcting time clock module
The amount of repaying.
3. a kind of clock module calibration system characterized by comprising
Error acquiring unit, for obtaining multiple time errors by correcting time clock module and reference clock；
Different value culling unit, for rejecting the exceptional value in the time error；
Offset acquiring unit, for being obtained according to described by the compensation rate calculation formula of correcting time clock module and the time error
The compensation rate by correcting time clock module；
Calibration unit, for according to the compensation rate to it is described compensated by correcting time clock module it is described by correcting time clock mould to calibrate
Block.
4. clock module calibration system according to claim 3, which is characterized in that the error acquiring unit is clock mistake
Poor instrument, the clocking error instrument are connect with described by correcting time clock module.
5. clock module calibration system according to claim 4, which is characterized in that the clock module calibration system is also wrapped
Include serial server, the clocking error instrument described is connect by the serial server with multiple by correcting time clock module.
6. according to the described in any item clock module calibration systems of claim 3 to 5, which is characterized in that described by correcting time clock mould
Block is arranged in electric energy meter, concentrator, data collector or distribution transformer.
7. according to the described in any item clock module calibration systems of claim 3 to 5, which is characterized in that described by correcting time clock mould
Block includes 7406RTC single module, 7406RTC Dual module or 8990RTC module.
8. according to the described in any item clock module calibration systems of claim 3 to 5, which is characterized in that the different value is rejected single
First, the described offset acquiring unit, the calibration unit are computer.
9. a kind of clock module calibrator (-ter) unit characterized by comprising
At least one processor；And the memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
It manages device to execute, so that at least one described processor is able to carry out such as the described in any item clock module calibrations of claim 1 to 2
Method.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer can
It executes instruction, the computer executable instructions are for making computer execute such as the described in any item clock moulds of claim 1 to 2
Block calibration method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811592645.3A CN109752642A (en) | 2018-12-20 | 2018-12-20 | A kind of clock module calibration method and its system, equipment, storage medium |
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| CN201811592645.3A CN109752642A (en) | 2018-12-20 | 2018-12-20 | A kind of clock module calibration method and its system, equipment, storage medium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110958071A (en) * | 2019-10-30 | 2020-04-03 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN111665431A (en) * | 2020-04-26 | 2020-09-15 | 江西联智集成电路有限公司 | Method, device, equipment and medium for calibrating clock source in chip |
| CN114138056A (en) * | 2021-11-04 | 2022-03-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Display terminal clock calibration method and device and display terminal |
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Application publication date: 20190514 |