CN108458771A - A kind of method that dynamic eliminates the interference of plum blossom pointer - Google Patents
A kind of method that dynamic eliminates the interference of plum blossom pointer Download PDFInfo
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- CN108458771A CN108458771A CN201810156308.3A CN201810156308A CN108458771A CN 108458771 A CN108458771 A CN 108458771A CN 201810156308 A CN201810156308 A CN 201810156308A CN 108458771 A CN108458771 A CN 108458771A
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- laser pulse
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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Abstract
The method that a kind of dynamic of the present invention eliminates the interference of plum blossom pointer, including N number of laser pulse is first extracted before S1, calibration, calculate the average time of each laser pulse；S2, execute calibration operation, using before calibration the average time of each laser pulse be used as dynamic pulse prover time, time of each laser pulse and compared with dynamic pulse prover time in first second after acquisition calibration, according to comparison result amendment laser pulse；S3, above one second the last one laser pulse are starting point, back extract N number of laser pulse, calculate the average time of upper one second each laser pulse；S4, above one second each laser pulse average time as dynamic pulse prover time, obtain in next second the time of each laser pulse and compared with dynamic pulse prover time, laser pulse corrected according to comparison result；S5, judge whether calibration operation is completed, if it is not, then entering S3；If so, terminating.The present invention can dynamically eliminate hand and be interfered by water meter or when there is bubble caused by calibration.
Description
Technical field
The present invention relates to water meters to verify field, the more particularly to method that a kind of dynamic eliminates the interference of plum blossom pointer.
Background technology
During carrying out calibration using auto-adjustment machine, due to being difficult to accomplish all to fill water, and do not fill water in water meter
Place can there are bubbles, and have substantial portion of bubble that can be adhered on the plum blossom pointer of water meter, this makes laser exist
It will appear scattering phenomenon when reading umber of pulse, and cause to read umber of pulse inaccuracy.In addition, during calibration, need by
Verification personnel take down the water meter verified with hand, and during being taken with hand, hand can inevitably block laser, and cause
Laser leakage meter umber of pulse.The accuracy of calibration can be all interfered with due to both the above, therefore, it is necessary to by both the above original
It interferes and is eliminated caused by, just can ensure that the accuracy of auto-adjustment.
Invention content
The technical problem to be solved in the present invention is to provide a kind of method that dynamic eliminates the interference of plum blossom pointer, by this
Method dynamically eliminates hand by water meter or the interference caused by calibration process when there is bubble, it can be ensured that auto-adjustment it is accurate
Property.
The invention is realized in this way：A kind of method that dynamic eliminates the interference of plum blossom pointer, the method includes walking as follows
Suddenly：
Step S1, enter calibration program before, extract N number of laser pulse in advance, read N number of laser pulse it is total when
Between, and calculating the average time of each laser pulse, wherein N is positive integer；
Step S2, start to execute calibration program and carry out calibration operation, obtain each laser pulse in first second after calibration
Time, and using the average time of calculated each laser pulse before entrance calibration program as dynamic pulse prover time,
The time of each laser pulse in first second is compared with dynamic pulse prover time, meanwhile, according to comparison result pair
Laser pulse carries out dynamic corrections；
Step S3, above one second the last one laser pulse is starting point, back extracts N number of laser pulse successively, reads N
The total time of a laser pulse, and calculate the average time of one second each laser pulse；
Step S4, the time of each laser pulse in next second is obtained, and with each laser arteries and veins of calculated upper one second
The average time of punching calibrates with dynamic pulse as dynamic pulse prover time, by the time of each laser pulse in next second
Time is compared, meanwhile, dynamic corrections are carried out to laser pulse according to comparison result；
Step S5, judge whether calibration operation is completed, if it is not, then entering step S3；If so, terminating.
Further, described to be specially to laser pulse progress dynamic corrections according to comparison result：
During comparison, when the time for comparing some laser pulse be one times of dynamic pulse prover time or
When more times of person, the just automatic laser pulse for supplementing corresponding multiple inside；It is dynamic when the time for comparing some laser pulse
At 0.6 times or less of the pulse matching time, it is just automatically deleted the laser pulse；When the time for continuously comparing two laser pulses
When being 0.6 times or less of dynamic pulse prover time, the two laser pulses are just automatically deleted, while supplementing one inside automatically
A complete laser pulse.
Further, in the N number of laser pulse of the extraction, the value range of N：50≦N≦100.
Further, described before entering calibration program, extracting N number of laser pulse in advance is specially：
Enter calibration program starting within first 5 seconds read laser pulse, and extract from the laser pulse of reading and N number of to swash
Light pulse.
The invention has the advantages that：Verification personnel can be dynamically eliminated by the method for the invention takes water meter or water with hand
Occurs the interference caused by calibration process when bubble in table, you can with the quantity of dynamic corrections laser pulse so that in calibration
True laser pulse quantity can be got in the process, and then the accuracy of auto-adjustment can be improved.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the execution flow chart for the method that a kind of dynamic of the present invention eliminates the interference of plum blossom pointer.
Specific implementation mode
It please refers to shown in Fig. 1, a kind of dynamic of the present invention eliminates the preferred embodiment of the method for plum blossom pointer interference, the side
Method includes the following steps：
Step S1, enter calibration program before, extract N number of laser pulse in advance, read N number of laser pulse it is total when
Between, and calculating the average time (can be obtained by total time divided by N) of each laser pulse, wherein N is positive integer；
Present invention selection reads the purposes of a certain number of laser pulses in advance before entering calibration program is：Entire
During calibration, the flow velocity of flow is metastable, and the rotating speed of plum blossom pointer is also metastable, and into calibration
First 10 seconds of program be stability of flow and prepare commutation the change of current state, and in this state be typically all no hand take water meter or
The interference of person's bubble, therefore, the laser pulse during this period of time extracted is all true, can be used as the benchmark compared.
In order to further decrease interference, described before entering calibration program, extracting N number of laser pulse in advance is specially：
Enter calibration program starting within first 5 seconds read laser pulse, and extract from the laser pulse of reading and N number of to swash
Light pulse.
Step S2, start to execute calibration program and carry out calibration operation, obtain each laser pulse in first second after calibration
Time, and using the average time of calculated each laser pulse before entrance calibration program as dynamic pulse prover time,
The time of each laser pulse in first second is compared with dynamic pulse prover time, meanwhile, according to comparison result pair
Laser pulse carries out dynamic corrections；
Step S3, above one second the last one laser pulse is starting point, back extracts N number of laser pulse successively, reads N
The total time of a laser pulse, and calculate the average time of one second each laser pulse.In the specific implementation, if on
The lazy weight of one second laser pulse is N number of, continues to back extract laser pulse, until after extracting N number of laser pulse
Stop.For example, in first second of calibration only have 80 laser pulses, and the value of N be 100, then continue to back from into
Locate 20 laser pulses supplements of extraction before entering calibration program.
Step S4, the time of each laser pulse in next second is obtained, and with each laser arteries and veins of calculated upper one second
The average time of punching calibrates with dynamic pulse as dynamic pulse prover time, by the time of each laser pulse in next second
Time is compared, meanwhile, dynamic corrections are carried out to laser pulse according to comparison result；
Step S5, judge whether calibration operation is completed, if it is not, then entering step S3；If so, terminating.
It is described to be specially to laser pulse progress dynamic corrections according to comparison result in above-mentioned steps S2 and step S4：
During comparison, when the time for comparing some laser pulse be one times of dynamic pulse prover time or
When more times of person (in the specific implementation, only rounding several times to be calculated), then it can be determined that and take water to there is verification personnel's hand
Table or there are bubble interference, at this point, the just automatic laser pulse for supplementing corresponding multiple inside；When comparing some laser arteries and veins
It when the time of punching is 0.6 times of dynamic pulse prover time or less, then can be determined that there is bubble interference, at this point, just automatic
Delete the laser pulse；It is 0.6 times or less of dynamic pulse prover time when the time for continuously comparing two laser pulses
When, it is possible to determine that there is bubble interference, at this point, the two laser pulses are just automatically deleted, while automatic supplement one inside
Complete laser pulse.
In order to preferably eliminate interference, in the N number of laser pulse of the extraction, the value range of N：50≦N≦100.When
So, in the specific implementation, the value of N can be selected or replaced according to practical operation experience.
In conclusion the invention has the advantages that：Verification personnel can be dynamically eliminated by the method for the invention to be taken with hand
Occurs the interference caused by calibration process when bubble in water meter or water meter, you can with the quantity of dynamic corrections laser pulse, make
True laser pulse quantity can be got during calibration by obtaining, and then the accuracy of auto-adjustment can be improved.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field modification and variation equivalent made by the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (4)
1. a kind of method that dynamic eliminates the interference of plum blossom pointer, it is characterised in that：Described method includes following steps：
Step S1, before entering calibration program, N number of laser pulse is extracted in advance, is read the total time of N number of laser pulse, and
Calculate the average time of each laser pulse, wherein N is positive integer；
Step S2, start execute calibration program carry out calibration operation, obtain calibration after in first second each laser pulse time,
And using the average time into calculated each laser pulse before calibration program as dynamic pulse prover time, by first
The time of each laser pulse is compared with dynamic pulse prover time in second, meanwhile, according to comparison result to laser arteries and veins
Rush in Mobile state amendment；
Step S3, above one second the last one laser pulse is starting point, back extracts N number of laser pulse successively, is read N number of sharp
The total time of light pulse, and calculate the average time of one second each laser pulse；
Step S4, the time of each laser pulse in next second is obtained, and with each laser pulse of calculated upper one second
Average time as dynamic pulse prover time, by the time of each laser pulse in next second with dynamic pulse prover time
It is compared, meanwhile, dynamic corrections are carried out to laser pulse according to comparison result；
Step S5, judge whether calibration operation is completed, if it is not, then entering step S3；If so, terminating.
2. the method that a kind of dynamic according to claim 1 eliminates the interference of plum blossom pointer, it is characterised in that：It is described according to than
Relatively result carries out dynamic corrections to laser pulse：
During comparison, when the time for comparing some laser pulse is one times of dynamic pulse prover time or more
Times when, the just automatic laser pulse for supplementing corresponding multiple inside；It is dynamic pulse when the time for comparing some laser pulse
At 0.6 times or less of prover time, it is just automatically deleted the laser pulse；It is when the time for continuously comparing two laser pulses
At 0.6 times or less of dynamic pulse prover time, be just automatically deleted the two laser pulses, at the same it is automatic supplement inside one it is complete
Whole laser pulse.
3. the method that a kind of dynamic according to claim 1 eliminates the interference of plum blossom pointer, it is characterised in that：In the extraction
When N number of laser pulse, the value range of N：50≦N≦100.
4. the method that a kind of dynamic according to claim 1 eliminates the interference of plum blossom pointer, it is characterised in that：It is described to enter
Before calibration program, extracting N number of laser pulse in advance is specially：
Start within first 5 seconds reading laser pulse into calibration program, and extracts N number of laser arteries and veins from the laser pulse of reading
Punching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156308.3A CN108458771B (en) | 2018-02-24 | 2018-02-24 | Method for dynamically eliminating interference of plum-blossom-shaped pointer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156308.3A CN108458771B (en) | 2018-02-24 | 2018-02-24 | Method for dynamically eliminating interference of plum-blossom-shaped pointer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108458771A true CN108458771A (en) | 2018-08-28 |
| CN108458771B CN108458771B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810156308.3A Active CN108458771B (en) | 2018-02-24 | 2018-02-24 | Method for dynamically eliminating interference of plum-blossom-shaped pointer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02257021A (en) * | 1989-03-30 | 1990-10-17 | Ricoh Elemex Corp | Method for setting instrumental error of electronic display type gas meter |
| CN101893464A (en) * | 2010-06-23 | 2010-11-24 | 宁波明泰流量设备有限公司 | High-precision and fast pulse metering device and method thereof |
| CN102466500A (en) * | 2010-11-19 | 2012-05-23 | 中国电子科技集团公司第五十研究所 | Device and method for detecting quantity of output pulses of pulse type vortex shedding flowmeter, and device and method for determining abnormity of output pulses |
| CN203837783U (en) * | 2014-05-22 | 2014-09-17 | 北京瑞赛长城航空测控技术有限公司 | Detected pulse collection and comparison board based on FPGA |
| CN104501886A (en) * | 2014-12-13 | 2015-04-08 | 重庆市山城燃气设备有限公司 | Reed pipe pulse type fluid flow meter metering method |
| CN107643116A (en) * | 2017-09-14 | 2018-01-30 | 湖南省计量检测研究院 | A kind of water meter rotating speed scaling method, system and device |
-
2018
- 2018-02-24 CN CN201810156308.3A patent/CN108458771B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02257021A (en) * | 1989-03-30 | 1990-10-17 | Ricoh Elemex Corp | Method for setting instrumental error of electronic display type gas meter |
| CN101893464A (en) * | 2010-06-23 | 2010-11-24 | 宁波明泰流量设备有限公司 | High-precision and fast pulse metering device and method thereof |
| CN102466500A (en) * | 2010-11-19 | 2012-05-23 | 中国电子科技集团公司第五十研究所 | Device and method for detecting quantity of output pulses of pulse type vortex shedding flowmeter, and device and method for determining abnormity of output pulses |
| CN203837783U (en) * | 2014-05-22 | 2014-09-17 | 北京瑞赛长城航空测控技术有限公司 | Detected pulse collection and comparison board based on FPGA |
| CN104501886A (en) * | 2014-12-13 | 2015-04-08 | 重庆市山城燃气设备有限公司 | Reed pipe pulse type fluid flow meter metering method |
| CN107643116A (en) * | 2017-09-14 | 2018-01-30 | 湖南省计量检测研究院 | A kind of water meter rotating speed scaling method, system and device |
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| CN108458771B (en) | 2020-07-28 |
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