CN109407498A - A kind of clock of power meter test method and clock of power meter test device - Google Patents
A kind of clock of power meter test method and clock of power meter test device Download PDFInfo
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- CN109407498A CN109407498A CN201810007231.3A CN201810007231A CN109407498A CN 109407498 A CN109407498 A CN 109407498A CN 201810007231 A CN201810007231 A CN 201810007231A CN 109407498 A CN109407498 A CN 109407498A
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- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
- G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
- G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
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- 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
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Abstract
The application belongs to electric energy meter testing field, provides a kind of clock of power meter test method, clock of power meter test device, test equipment and computer readable storage medium.Wherein, the clock of power meter test method, comprising: count counted number of pulses of the common crystals of non-constant temperature within the first clock cycle, obtain the first counted number of pulses；Counted number of pulses of the common crystals within the second clock period is counted, the second counted number of pulses is obtained；Based on first counted number of pulses and second counted number of pulses, the clocking error of the electric energy meter is calculated.Technical solution provided herein is not needed using constant-temperature crystal oscillator, therefore is not necessarily to preheating before testing；And test benchmark is the 1PPS clock output signal of GPS module, is influenced by annual aging characteristic lower, therefore can guarantee the long-term measuring accuracy to clock of power meter error.
Description
Technical field
The application belongs to electric energy meter testing field more particularly to a kind of clock of power meter test method, clock of power meter are surveyed
Trial assembly sets, test equipment and computer readable storage medium.
Background technique
The construction dynamics of smart grid is continued to increase recently as country, the quantity explosive growth of intelligent electric energy meter,
Clock of power meter precision is the foundation of intelligent electric energy meter timing, and quality determines the accuracy of intelligent electric energy meter complete machine timing,
Therefore, clock of power meter accuracy test is the key link of factory test.
Currently, each electric energy meter manufacturer mainly realizes clock of power meter accuracy test by purchase high end frequency meter,
Most high end frequency meter needs longer preheating time before to clock of power meter accuracy test using constant-temperature crystal oscillator；And
Using the frequency meter of constant-temperature crystal oscillator, due to influence factors such as annual aging characteristics, after long-time service, for clock of power meter error
Measuring accuracy not can guarantee.
Summary of the invention
In view of this, this application provides a kind of clock of power meter test method, clock of power meter test device, tests to set
Standby and computer readable storage medium, it is ensured that the long-term measuring accuracy of clock of power meter error, and do not need compared with
Long preheating time.
The application first aspect provides a kind of clock of power meter test method, comprising:
Counted number of pulses of the common crystals of non-constant temperature within the first clock cycle is counted, the first counted number of pulses is obtained,
Wherein, first clock cycle is the 1PPS of GPS (Global Positioning System, global positioning system) module
The output period of (1Pulse Per Second, a pulse per second) signal；
Counted number of pulses of the common crystals within the second clock period is counted, the second counted number of pulses is obtained, wherein
The second clock period is the electric energy meter current clock cycle；
Based on first counted number of pulses and second counted number of pulses, the clocking error of the electric energy meter is calculated.
The application second aspect provides a kind of clock of power meter test device, comprising:
First statistic unit is obtained for counting counted number of pulses of the common crystals of non-constant temperature within the first clock cycle
To the first counted number of pulses, wherein first clock cycle is the output period of the 1PPS signal of GPS module；
Second statistic unit obtains for counting counted number of pulses of the common crystals within the second clock period
Two counted number of pulses, wherein the second clock period is the electric energy meter current clock cycle；
First error computing unit is calculated for being based on first counted number of pulses and second counted number of pulses
The clocking error of the electric energy meter.
The application third aspect provides a kind of test equipment, including memory, processor and is stored in the storage
In device and the computer program that can run on the processor, which is characterized in that the processor executes the computer journey
The step of method as described above is realized when sequence.
The application fourth aspect provides a kind of computer readable storage medium, the computer-readable recording medium storage
There is computer program, which is characterized in that the step of computer program realizes method as described above when being executed by processor.
Therefore counted number of pulses of the common crystals of non-constant temperature within the first clock cycle is counted first, obtain
One counted number of pulses, and counted number of pulses of the statistics common crystals within the second clock period, obtain the second pulsimeter
Numerical value, wherein first clock cycle is the output period of the 1PPS signal of GPS module, and the second clock period is electric energy meter
The current clock cycle calculates the clocking error of electric energy meter secondly, being based on the first counted number of pulses and the second counted number of pulses.
The 1PPS signal of GPS module is the high precision clock that frequency is 1Hz, error is 20ns, and the clock frequency of electric energy meter is also 1Hz,
Therefore, in technical scheme, using 1PPS signal as benchmark signal, the clocking error of electric energy meter is tested, is counted
1PPS signal exports the count value of the common crystals in the period and the count value of the common crystals in the clock of power meter period, leads to
Two count values are crossed, to calculate the clocking error of electric energy meter.Technical solution provided herein is not needed using constant-temperature crystal oscillator,
Therefore without preheating before testing；And test benchmark be GPS module 1PPS clock output signal, by annual aging characteristic influenced compared with
It is low, therefore can guarantee the long-term measuring accuracy to clock of power meter error.
Detailed description of the invention
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the application
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of clock of power meter test macro provided by the present application；
Fig. 2 is the implementation process schematic diagram for the clock of power meter test method that the embodiment of the present application one provides；
Fig. 3 is the implementation process schematic diagram for the clock of power meter test method that the embodiment of the present application two provides；
Fig. 4 is the structural schematic diagram for the clock of power meter test device that the embodiment of the present application three provides；
Fig. 5 is the structural schematic diagram for the test equipment that the embodiment of the present application four provides.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, so as to provide a thorough understanding of the present application embodiment.However, it will be clear to one skilled in the art that there is no these specific
The application also may be implemented in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, so as not to obscure the description of the present application with unnecessary details.
In order to illustrate the technical solution of the application, the following is a description of specific embodiments.
Attached drawing 1 provides clock of power meter test macro, as shown in Figure 1, the clock of power meter test macro includes test
Equipment 101, GPS module 102, the common crystals 104 of electric energy meter to be measured 103 and non-constant temperature, test equipment 101 have been internally integrated
Counter 105, the 1PPS signal output port of GPS module pass through the input of the input terminal linkage counter 105 of test equipment 101
End, the clock output port of electric energy meter to be measured pass through another input of another input terminal linkage counter 105 of test equipment 101
End, non-constant temperature common crystals 104 pass through 101 linkage counter 105 of test equipment as the clock input of counter 105.Wherein,
Above-mentioned counter 105 also can be set outside test equipment 101, and GPS module and non-constant temperature common crystals also can integrate
Inside test equipment.Electric energy meter to be measured can pass through jockey connecting test equipment.When electric energy meter provided herein
Clock test method is applied in test equipment 101.
Embodiment one
The clock of power meter test method provided below the embodiment of the present application one is described, and please refers to attached drawing 2, this Shen
Please clock of power meter test method include: in embodiment
Step S201: counted number of pulses of the common crystals of non-constant temperature within the first clock cycle is counted, the first arteries and veins is obtained
Rush count value；
In the embodiment of the present application, above-mentioned first clock cycle is the output period of the 1PPS signal of GPS module.In general,
GPS module 1PPS signal is period 1s, error 20ns, that is, 0.02PPM (Part PerMillion, hundred a ten thousandths)
High precision clock, in actual test, the standard time clock precision tested the clock of electric energy meter has to reach
0.1PPM, therefore, the 1PPS signal accuracy of GPS module can be used as reference signal and come pair much higher than 0.1PPM needed for test
The clock signal of electric energy meter is tested.
In the embodiment of the present application, test equipment counts pulse of the common crystals within the output period of 1PPS signal first
Count value.To guarantee measuring accuracy, the frequency of common crystals is the bigger the better, and in actual test, the frequency of common crystals is general
For 1MHz or more.
Step S202: counted number of pulses of the above-mentioned common crystals within the second clock period is counted, the second pulsimeter is obtained
Numerical value；
In the embodiment of the present application, above-mentioned second counted number of pulses is the electric energy meter current clock cycle.Due to common brilliant
The frequency of oscillation of vibration can be different in different moments frequency of oscillation with time drift, therefore, in order to guarantee the reliability of test,
When the counted number of pulses to common crystals counts, when the output period and electric energy meter current clock cycle of 1PPS signal
Between registration it is bigger, test result is more reliable.
Step S203: it is based on above-mentioned first counted number of pulses and above-mentioned second counted number of pulses, calculates above-mentioned electric energy meter
Clocking error；
In the embodiment of the present application, it is based on the first counted number of pulses and the second counted number of pulses, it can be according to error meter
Formula is calculated to calculate the present clock error of electric energy meter, it is preferable that above-mentioned error calculation formula can be with are as follows:
Such as: the frequency of common crystals is 10MHz, and the first counted number of pulses is 10M+50, and the second counted number of pulses is
10M+70 is a, then the current clock frequency test result of electric energy meter are as follows:Compared to the 1Hz with standard, electric energy meter
Present clock error are as follows:
Further, after calculating the present clock error of electric energy meter, it can also judge that the clock of the electric energy meter misses
Whether difference, when testing out clock of power meter error not in preset error range, can show in default range
Screen output prompt information can also export alarm, prompt tester's clock of power meter error unqualified.For example, general feelings
Under condition, the requirement to clock of power meter error is to be less than 0.5s daily therefore to calculate to obtain each clock to electric energy meter
Error requirements range is [- 5.79PPM, 5.79PPM], when test equipment tests out clock of power meter error not within the above range
When, prompt information can be exported and prompt the clocking error of the electric energy meter unqualified.
In the embodiment of the present application, step-by-step counting of the common crystals of non-constant temperature within the first clock cycle is counted first
Value, obtains the first counted number of pulses, and counted number of pulses of the above-mentioned common crystals of statistics within the second clock period, obtains the
Two counted number of pulses calculate the clocking error of electric energy meter secondly, being based on the first counted number of pulses and the second counted number of pulses.GPS
The 1PPS signal of module is the high precision clock that frequency is 1Hz, error is 20ns, and the clock frequency of electric energy meter is also 1Hz, because
This, using 1PPS signal as benchmark signal, tests the clocking error of electric energy meter in technical scheme, statistics
1PPS signal exports the count value of the common crystals in the period and the count value of the common crystals in the clock of power meter period, leads to
Two count values are crossed, to calculate the clocking error of electric energy meter.Technical solution provided herein is not needed using constant-temperature crystal oscillator,
Therefore without preheating before testing；And test benchmark be GPS module 1PPS clock output signal, by annual aging characteristic influenced compared with
It is low, therefore can guarantee the long-term measuring accuracy to clock of power meter error.
Embodiment two
The clock of power meter test method provided below the embodiment of the present application two is described, and please refers to attached drawing 3, this Shen
Please clock of power meter test method include: in embodiment
Step S301: counted number of pulses of the common crystals of non-constant temperature within the first clock cycle is counted, the first arteries and veins is obtained
Rush count value；
Step S302: counted number of pulses of the above-mentioned common crystals within the second clock period is counted, the second pulsimeter is obtained
Numerical value；
In embodiments of the present invention, above-mentioned steps S301 and S302 is identical as above-mentioned steps S201 and S202 respectively, specifically
It can be found in the associated description of above-mentioned steps S201 to S202, details are not described herein again.
Step S303: judge above-mentioned first counted number of pulses whether in preset count range；
In the embodiment of the present application, above-mentioned preset count range receives the good feelings of signal in GPS module to indicate
Under condition, the range of the first counted number of pulses.When GPS module receive signal it is good in the case where, the 1PPS signal of GPS module can be with
Frequency 1Hz, the high precision clock of error 20ns are remained, but in the case where working as GPS module reception poor signal, 1PPS signal
It is possible that biggish error, if using 1PPS signal as test benchmark again at this time, it is clear that be unreasonable.Therefore, at this
Apply in embodiment, in order to avoid occurring to the test of clock of power meter error in the case where GPS module receives poor signal
Biggish deviation can carry out reasonable evaluation to the first counted number of pulses first.In the embodiment of the present application, it is preset with counting model
Enclose, when the first counted number of pulses is in count range, then represent at this time GPS module receive signal it is good, may be used as testing
Benchmark；When the first counted number of pulses is not in count range, then represents GPS module at this time and receive signal difference, 1PPS at this time
Signal not can be used as test benchmark.
Above-mentioned count range can be arranged according to the frequency values of common crystals and error amount, for example, if common crystals
Nominal frequency value be fMHz, nominal frequency error is δ PPM, the then frequency error of the common crystals are as follows: f δ Hz, if assuming
The time error of a cycle of 1PPS is 20ns, then count range can be set are as follows: [f × 106-fδ-20×10-9(f×
106- f δ), f × 106+fδ+20×10-9(f×106+fδ)].Count range can also be according to the history come out before
First counted number of pulses is arranged, for example, first pulsimeter in a clock cycle on measuring electric energy meter can be stored in advance
Numerical value of NA upper period, and default fluctuation range Δ, then count range are as follows: [NA upper periodΔ, NA upper period+ Δ], if measured by current
First counted number of pulses is in above-mentioned count range, then it is assumed that GPS module reception signal at this time is good, otherwise it is assumed that GPS mould
Block receives signal difference, and 1PPS signal at this time not can be used as test benchmark.
If above-mentioned first counted number of pulses thens follow the steps S304 in preset count range, otherwise, step is executed
S305。
Step S304: it is based on above-mentioned first counted number of pulses and above-mentioned second counted number of pulses, calculates above-mentioned electric energy meter
Clocking error；
In embodiments of the present invention, above-mentioned steps S304 is identical as above-mentioned steps S203, and for details, reference can be made to above-mentioned steps
The associated description of S203, details are not described herein again.
Step S305: it is based on third counted number of pulses and above-mentioned second counted number of pulses, calculates the clock of above-mentioned electric energy meter
Error.
In the embodiment of the present application, above-mentioned third counted number of pulses is pre-stored common crystals in GPS module
Counted number of pulses in the output period of 1PPS signal.When the first counted number of pulses is not in preset count range, then not
It can calculate the error of electric energy meter present clock period according to the first counted number of pulses at this time, but with pre-stored third
Counted number of pulses replaces the first counted number of pulses, tests the error of electric energy meter present clock period.Above-mentioned third arteries and veins
Rushing count value can be arranged according to the first counted number of pulses of history in count range come out before, example
It such as, can be the first counted number of pulses N on measurement electric energy meter when a clock cycleA upper periodIt is stored in advance, as third arteries and veins
Rush count value.
In the embodiment of the present application, step-by-step counting of the common crystals of non-constant temperature within the first clock cycle is counted first
Value, obtains the first counted number of pulses, and counted number of pulses of the above-mentioned common crystals of statistics within the second clock period, obtains the
Two counted number of pulses, secondly, judge the first counted number of pulses whether in preset count range, if in default range,
It is then based on the first counted number of pulses and the second counted number of pulses, calculates the clocking error of electric energy meter, if not within a preset range,
Based on third counted number of pulses and the second counted number of pulses, the clocking error of electric energy meter is calculated.By judging the first step-by-step counting
Whether value is in preset count range, it is ensured that only in the case where GPS module reception signal is good, just utilizes 1PPS
Signal tests clock of power meter, and compared to embodiment one, technical solution provided by embodiment two can further really
The reliability of test result is protected, and technical solution provided herein is not needed using constant-temperature crystal oscillator, therefore tests preceding nothing
It needs to preheat；And test benchmark is the 1PPS clock output signal of GPS module, is influenced by annual aging characteristic lower, therefore can be protected
Demonstrate,prove the long-term measuring accuracy to clock of power meter error.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present application constitutes any limit
It is fixed.
Embodiment three
The embodiment of the present application three also provides a kind of clock of power meter test device, as shown in figure 4, clock of power meter test dress
Setting 400 includes the first statistic unit 401, the second statistic unit 402 and first error computing unit 403.
First statistic unit 401, for counting counted number of pulses of the common crystals of non-constant temperature within the first clock cycle,
Obtain the first counted number of pulses, wherein above-mentioned first clock cycle is the output period of the 1PPS signal of GPS module；
Second statistic unit 402 is obtained for counting counted number of pulses of the above-mentioned common crystals within the second clock period
Second counted number of pulses, wherein the above-mentioned second clock period is the electric energy meter current clock cycle；
First error computing unit 403, for being based on above-mentioned first counted number of pulses and above-mentioned second counted number of pulses, meter
Count stating the clocking error of electric energy meter in.
Preferably, above-mentioned clock of power meter test device 400 further include:
Judging unit, for judging above-mentioned first counted number of pulses whether in preset count range；
Above-mentioned first error computing unit is specifically used for:
When above-mentioned first counted number of pulses is in above-mentioned count range, based on above-mentioned first counted number of pulses and above-mentioned the
Two counted number of pulses calculate the clocking error of above-mentioned electric energy meter.
Preferably, above-mentioned clock of power meter test device 400 further include:
Second error calculation unit is used for when above-mentioned first counted number of pulses is not in above-mentioned count range, based on third
Counted number of pulses and above-mentioned second counted number of pulses, calculate the clocking error of above-mentioned electric energy meter, wherein above-mentioned third step-by-step counting
Value is counted number of pulses of the pre-stored common crystals within the output period of the 1PPS signal of GPS module.
Preferably, above-mentioned first error computing unit 403 is specifically used for:
Based on above-mentioned first counted number of pulses and above-mentioned second counted number of pulses, electric energy meter is calculated according to error calculation formula
Clocking error, above-mentioned error calculation formula are as follows:
Further, above-mentioned clock of power meter test device 400 further include:
Error judgment unit, for judging the clocking error of above-mentioned electric energy meter whether in preset error range；
Prompt unit, if the clocking error for above-mentioned electric energy meter exports prompt information not in above-mentioned error range,
Above-mentioned prompt information is unqualified to prompt the clocking error of above-mentioned electric energy meter.
It should be noted that the contents such as information exchange, implementation procedure between each module/unit of above-mentioned apparatus, due to
Embodiment of the present invention method is based on same design, concrete function and bring technical effect, and for details, reference can be made to embodiments of the method
Part, details are not described herein again.
Example IV
Fig. 5 is the schematic diagram for the test equipment that the embodiment of the present application four provides.As shown in figure 5, the test of the embodiment is set
Standby 5 include: processor 50, memory 51 and are stored in the meter that can be run in above-mentioned memory 51 and on above-mentioned processor 50
Calculation machine program 52.Above-mentioned processor 50 realizes the step in above-mentioned each embodiment when executing above-mentioned computer program 52, such as
Step S201 to S203 shown in Fig. 2.Alternatively, above-mentioned processor 50 realizes above-mentioned each device when executing above-mentioned computer program 52
The function of each unit in embodiment, such as the function of module 401 to 403 shown in Fig. 4.
Above-mentioned test equipment 5 may include, but be not limited only to, processor 50, memory 51.Those skilled in the art can manage
Solution, Fig. 5 is only the example of test equipment 5, does not constitute the restriction to test equipment 5, may include more or more than illustrating
Few component perhaps combines certain components or different components, such as above-mentioned test equipment can also be set including input and output
Standby, network access equipment, bus etc..
Alleged processor 50 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
Above-mentioned memory 51 can be the internal storage unit of above-mentioned test equipment 5, such as the hard disk or interior of test equipment 5
It deposits.Above-mentioned memory 51 is also possible to the External memory equipment of above-mentioned test equipment 5, such as be equipped in above-mentioned test equipment 5
Plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card dodge
Deposit card (Flash Card) etc..Further, above-mentioned memory 51 can also both include the storage inside list of above-mentioned test equipment 5
Member also includes External memory equipment.Above-mentioned memory 51 is for storing needed for above-mentioned computer program and above-mentioned test equipment
Other programs and data.Above-mentioned memory 51 can be also used for temporarily storing the data that has exported or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of above-mentioned apparatus is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In embodiment provided herein, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, on
The division of module or unit is stated, only a kind of logical function partition, there may be another division manner in actual implementation, such as
Multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be through some interfaces, device
Or the INDIRECT COUPLING or communication connection of unit, it can be electrical property, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If above-mentioned integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the application realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, above-mentioned meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, above-mentioned computer program includes computer program code, above-mentioned computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..Above-mentioned computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry above-mentioned computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that above-mentioned
The content that computer-readable medium includes can carry out increasing appropriate according to the requirement made laws in jurisdiction with patent practice
Subtract, such as does not include electric carrier signal and electricity according to legislation and patent practice, computer-readable medium in certain jurisdictions
Believe signal.
Above above-described embodiment is only to illustrate the technical solution of the application, rather than its limitations；Although referring to aforementioned reality
Example is applied the application is described in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution should all
Comprising within the scope of protection of this application.
Claims (10)
1. a kind of clock of power meter test method characterized by comprising
Counted number of pulses of the common crystals of non-constant temperature within the first clock cycle is counted, the first counted number of pulses is obtained, wherein
First clock cycle is the output period of the 1PPS signal of GPS module；
Counted number of pulses of the common crystals within the second clock period is counted, obtains the second counted number of pulses, wherein described
The second clock period is the electric energy meter current clock cycle；
Based on first counted number of pulses and second counted number of pulses, the clocking error of the electric energy meter is calculated.
2. clock of power meter test method as described in claim 1, which is characterized in that the common crystals of the non-constant temperature of statistics
After the counted number of pulses in the first clock cycle, further includes:
Judge first counted number of pulses whether in preset count range；
It is described to be based on first counted number of pulses and second counted number of pulses, calculate the clocking error of the electric energy meter
Are as follows: when first counted number of pulses is in the count range, it is based on first counted number of pulses and second arteries and veins
Count value is rushed, the clocking error of the electric energy meter is calculated.
3. clock of power meter test method as claimed in claim 2, which is characterized in that judgement first step-by-step counting
After whether value is in preset count range, further includes:
When first counted number of pulses is not in the count range, it is based on third counted number of pulses and second pulse
Count value calculates the clocking error of the electric energy meter, wherein the third counted number of pulses is that pre-stored common crystals exist
Counted number of pulses in the output period of the 1PPS signal of GPS module.
4. clock of power meter test method as described in claim 1, which is characterized in that described to be based on first step-by-step counting
Value and second counted number of pulses, calculate the clocking error of the electric energy meter, comprising: based on first counted number of pulses and
Second counted number of pulses calculates the clocking error of electric energy meter, the error calculation formula according to error calculation formula are as follows:
5. clock of power meter test method according to any one of claims 1 to 4, which is characterized in that described based on described
First counted number of pulses and second counted number of pulses, after the clocking error for calculating the electric energy meter, further includes:
Judge the clocking error of the electric energy meter whether in preset error range；
If the clocking error of the electric energy meter not in the error range, exports prompt information, the prompt information to
Prompt the clocking error of the electric energy meter unqualified.
6. a kind of clock of power meter test device characterized by comprising
First statistic unit obtains for counting counted number of pulses of the common crystals of non-constant temperature within the first clock cycle
One counted number of pulses, wherein first clock cycle is the output period of the 1PPS signal of GPS module；
Second statistic unit obtains the second arteries and veins for counting counted number of pulses of the common crystals within the second clock period
Rush count value, wherein the second clock period is the electric energy meter current clock cycle；
First error computing unit, for being based on first counted number of pulses and second counted number of pulses, described in calculating
The clocking error of electric energy meter.
7. clock of power meter test device as claimed in claim 6, which is characterized in that the clock of power meter test device is also
Include:
Judging unit, for judging first counted number of pulses whether in preset count range；
The first error computing unit is specifically used for:
When first counted number of pulses is in the count range, it is based on first counted number of pulses and second arteries and veins
Count value is rushed, the clocking error of the electric energy meter is calculated.
8. clock of power meter test device as claimed in claim 7, which is characterized in that the clock of power meter test device is also
Include:
Second error calculation unit is used for when first counted number of pulses is not in the count range, based on third pulse
Count value and second counted number of pulses, calculate the clocking error of the electric energy meter, wherein the third counted number of pulses
Are as follows: counted number of pulses of the pre-stored common crystals within the output period of the 1PPS signal of GPS module.
9. a kind of test equipment, including memory, processor and storage are in the memory and can be on the processor
The computer program of operation, which is characterized in that the processor realizes such as claim 1 to 5 when executing the computer program
The step of any one the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as claim 1 to 5 of realization the method.
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| CN114609891A (en) * | 2022-03-10 | 2022-06-10 | 深圳市轱辘车联数据技术有限公司 | Method and device for determining time, electronic equipment and storage medium |
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