CN106289459A - Ultrasonic wave gas flow-meter dot factor correcting unit and method - Google Patents
Ultrasonic wave gas flow-meter dot factor correcting unit and method Download PDFInfo
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- CN106289459A CN106289459A CN201610621562.7A CN201610621562A CN106289459A CN 106289459 A CN106289459 A CN 106289459A CN 201610621562 A CN201610621562 A CN 201610621562A CN 106289459 A CN106289459 A CN 106289459A
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- ultrasonic wave
- monitor station
- gas meter
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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
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
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Abstract
The present invention relates to automatic gauge field, particularly to ultrasonic wave gas flow-meter dot factor correcting unit and method, data communication is carried out between monitor station and ultrasonic wave gas meter, obtain the gas instantaneous delivery value of gas meter, flow meter, the gas instantaneous delivery value recorded with monitor station carries out comparing calculation, obtaining the correlative flow point calibration coefficient of ultrasonic wave gas meter more efficiently, then new flow point calibration coefficient is sent to ultrasonic wave gas meter, ultrasonic wave gas meter updates flow point calibration coefficient.The check system solving existing diaphragm gas meter is not suitable for ultrasonic wave gas meter, and the check system used time of diaphragm gas meter is longer, inefficient, the problem not being suitable for batch production.
Description
Technical field
The present invention relates to automatic gauge field, in particular to ultrasonic wave gas flow-meter dot factor correcting unit and side
Method.
Background technology
Supersonic wave metering technology is due to features such as its degree of accuracy is high, highly sensitive, life-span length, in recent years at big flow gas meter
Being used widely in amount field, in terms of low discharge metering, ultrasonic wave gas meter is also developed rapidly, owing to having all-electronin
Formula, mechanical part, not by advantages such as mechanical wear fault are affected, it is contemplated that following in gas metering field by former for replacement progressively
Some diaphragm gas meters.
Ultrasonic wave gas meter needed to carry out exfactory inspection before dispatching from the factory, and carried out precision adjustment and accuracy detection.Original
Diaphragm gas meter is the flow being set flow point by diaphragm gas meter detection when detection, obtains preliminary survey error, finally by
Adjust diaphragm gas meter internal gear and carry out accuracy correction, to reach required precision of dispatching from the factory.Existing ultrasonic wave gas meter due to
Being total digitalization gas meter, flow meter, the most no longer have gear, the most original inspection bearing calibration is the most inapplicable.And due to ultrasound wave
The processing technology of gas meter, flow meter is higher, is affected by the diversity of housing, element and installation, cause every during manufacturing
The certainty of measurement of ultrasonic wave gas meter is respectively provided with difference, so when ultrasonic wave gas meter exfactory inspection, needing ultrasonic to every
Ripple gas meter, flow meter carries out precision adjustment, makes the certainty of measurement of the ultrasonic wave gas meter dispatched from the factory all in prescribed limit.At present, membrane type combustion
Ultrasonic wave gas meter is detected by the detection mode of gas meter, and the detection process used time is longer, inefficient, is not suitable for batch raw
Produce.
In sum, needing badly at present and want a kind of technical scheme, the check system solving existing diaphragm gas meter is not suitable for
Ultrasonic wave gas meter, and calculate again by preliminary survey gas meter, flow meter error and each flow point tolerance and correct the inspection of ultrasonic wave gas meter
Process time is longer, inefficient, the problem not being suitable for batch production.
Summary of the invention
The check system that it is an object of the invention to solve existing gas meter, flow meter is not suitable for ultrasonic wave gas meter, and by just
The checkout procedure time that survey gas meter, flow meter error corrects ultrasonic wave gas meter again is longer, inefficient, is not suitable for batch production
Problem, it is provided that one carries out coefficient correction device and side according to ultrasonic wave gas meter and monitor station at each flow point instantaneous delivery
Method.
To achieve these goals, the technical scheme that the application uses is:
Ultrasonic wave gas flow-meter dot factor correcting unit, including monitor station, described monitor station is provided with gas detecting pipeline,
At least one ultrasonic wave gas meter can be detected on described gas detecting pipeline simultaneously, described monitor station is provided with monitor station control
Module, correction module and monitor station communication module, described ultrasonic wave gas meter is provided with ultrasonic wave gas module of meter control and
Ultrasonic wave gas meter communication module, described monitor station communication module and ultrasonic wave gas meter communication module carry out data interaction.Institute
State the monitor station control module detection gas instantaneous delivery value by gas detecting pipeline, described ultrasonic wave gas module of meter control
Detect the gas instantaneous delivery value by ultrasonic wave gas meter, described monitor station communication module and ultrasonic wave gas meter communication module
Data interaction achieve the data communication of monitor station and ultrasonic wave gas meter, ultrasonic wave gas module of meter control is detected
Gas instantaneous delivery value is transported to monitor station, monitor station two gas instantaneous delivery values are carried out comparing calculation, it is thus achieved that new
Ultrasonic wave gas flow-meter dot factor, it is to avoid just can complete accuracy correction after originally must obtaining measurement point tolerance, can be simultaneously
Many ultrasonic wave gas meters are carried out flow dot factor detection, make flow dot factor trimming process efficiency improve, the time shorten and
It is applicable to batch detection；
By described correction module, ultrasonic wave gas meter communication module is transferred to the gas instantaneous delivery value of monitor station with in real time
Time carries out comparing calculation with gas instantaneous delivery value and the real-time time of the storage of monitor station memory module, obtains new flow point
Coefficient also carries out oneself's coefficient update, it is not necessary to manual operation, process is shorter, corrects more accurate..
As the preferred version of the application, described monitor station is provided with gather real-time time monitor station time module and
The monitor station memory module of storage data.Gas is gathered instantaneous by described monitor station time module record monitor station control module
The real-time time of flow value, described monitor station memory module is by corresponding with real-time time for gas instantaneous delivery value storage.Convenient super
Monitor station and sound wave gas meter, flow meter time unifying, carry out comparing calculation to the gas instantaneous delivery value of synchronization.
As the preferred version of the application, described ultrasonic wave gas meter is provided with ultrasonic wave gas meter time module and deposits
The ultrasonic wave gas meter memory module of storage data.By ultrasonic wave gas meter time module, record ultrasonic wave gas meter gathers gas
The acquisition time of body instantaneous delivery value, and it is acquired time and gas instantaneous delivery value by ultrasonic wave gas meter memory module
Corresponding storage, facilitate monitor station and ultrasonic wave gas meter time unifying, it is right to carry out the gas instantaneous delivery value of synchronization
Than calculating.Gas instantaneous delivery value is transferred to detection by monitor station communication module together with real-time time by ultrasonic wave gas meter
Platform, facilitates monitor station to carry out new coefficient calculations.
As the preferred version of the application, described monitor station communication module and ultrasonic wave gas meter communication module pass through serial ports
Communication mode carries out data interaction.
As the preferred version of the application, described monitor station communication module and ultrasonic wave gas meter communication module by infrared
Line communication mode carries out data interaction.The use of two kinds of communication modes, makes correcting unit be applicable to different communication modes.
Disclosed herein as well is a kind of ultrasonic wave gas flow-meter dot factor bearing calibration,
Comprise the following steps:
Step one, starts monitor station detection function and ultrasonic wave gas meter detection function, and starts monitor station communication module simultaneously
And the data communication function between ultrasonic wave gas meter communication module.
Step 2, monitor station control module gathers the gas instantaneous delivery value in gas detecting pipeline, monitor station time mould
Block record gathers the real-time time of gas instantaneous delivery value.
Step 3, ultrasonic wave gas module of meter control gathers the gas instantaneous delivery value by ultrasonic wave gas meter, ultrasonic
Ripple gas meter, flow meter time module record gathers the real-time time of gas instantaneous delivery value.
Step 4, the gas instantaneous delivery value of collection is transferred to real-time time by ultrasonic wave gas meter by communication module
Monitor station.
Step 5, starts the correction module of monitor station, and correction module carries out the time pair of monitor station and ultrasonic wave gas meter
Together, the gas that the gas instantaneous delivery value sent ultrasonic wave gas module of meter control gathers with corresponding monitor station control module
Instantaneous delivery value carries out comparing calculation, obtains new flow dot factor.
Step 6, the flow dot factor that ultrasonic wave gas meter is new updates, stores and apply.
As the preferred version of the application, described step 4 comprises the steps:
During the collection of four a, the monitor station memory module storage gas instantaneous delivery value that collects of monitor station control module and correspondence
Between；When the gas instantaneous delivery value that ultrasonic wave gas meter memory module storage ultrasonic wave gas meter collects is with corresponding collection
Between.
Four b, use ultrasonic wave gas meter communication module in real time or non-real time by gas instantaneous delivery value with relative
The real-time time answered is sent to monitor station.
As the application preferred version, described non-real time can be USB flash disk copy instantaneous delivery value and corresponding collection
Real-time time；Can also be by sending data after the timing of ultrasonic wave gas meter intervalometer.
As the preferred version of the application, when not reaching regulation according to the new calculated accuracy of detection of flow dot factor
Accuracy of detection, steady air current or detection time can be extended, repeat step 2 to step 6, until accuracy of detection meets regulation.
In sum, owing to have employed technique scheme, having of the monitor station flow dot factor correcting unit of the application
Benefit effect is:
1, by the data interaction between ultrasonic wave gas meter communication module and monitor station communication module, it is achieved that ultrasonic wave gas
Table and the data communication of monitor station, be automatically obtained coefficient correction by monitor station correction module, is not required to manual operation, and detection process is relatively
Convenient and swift；
2, many ultrasonic wave gas meters can carry out coefficient correction simultaneously, detection process is easier, and efficiency is higher, it is adaptable in batches
Produce.
3, being arranged on monitor station by correction module, the most existing gas meter, flow meter many dependence battery is powered, straightening die
When block is arranged in gas meter, flow meter, the power consumption of its battery can be increased；On the other hand, the computing capability of monitor station is higher, calculates stream
The speed of amount dot factor is faster；Another further aspect, when correction module is arranged on monitor station, a correction module can be simultaneously
Multiple gas meter, flow meters be corrected work, without for each gas meter, flow meter, special correction module or correction module circuit are set,
Simplify the circuit in gas meter, flow meter or control module.
4, described monitor station communication module and ultrasonic wave gas meter communication module can carry out data interaction by serial ports, also
Data interaction can be carried out by infrared ray, make ultrasonic wave gas flow-meter dot factor correcting unit can use different communication
Mode.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ultrasonic wave gas flow-meter dot factor correcting unit of the application.
Reference
1-monitor station, 11-monitor station control module, 12-monitor station time module, 13-monitor station memory module, 14-monitor station
Communication module, 15-correction module.2-ultrasonic wave gas meter, 21-ultrasonic wave gas module of meter control, during 22-ultrasonic wave gas meter
Between module, 23-ultrasonic wave gas meter memory module, 24-ultrasonic wave gas meter communication module.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and be embodied as
Example, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only in order to explain this
Bright, it is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, monitor station flow dot factor correcting unit, including monitor station 1, described monitor station 1 is provided with gas
Signal piping, described gas detecting pipeline can detect at least one ultrasonic wave gas meter 2 simultaneously, and described monitor station 1 is arranged
There are monitor station control module 11 and monitor station communication module 14, described ultrasonic wave gas meter 2 is provided with ultrasonic wave gas meter control
Molding block 21 and ultrasonic wave gas meter communication module 24, described monitor station control module 11 detects the gas by gas detecting pipeline
Body instantaneous delivery value, described ultrasonic wave gas module of meter control 21 detects the gas instantaneous delivery value by ultrasonic wave gas meter 2,
Described monitor station communication module 14 and ultrasonic wave gas meter communication module 24 carry out data communication, it is achieved that monitor station 1 is with ultrasonic
The data communication of ripple gas meter, flow meter 2, the gas instantaneous delivery value detected by ultrasonic wave gas module of meter control 11 is transported to detection
Platform 1, described monitor station 1 is additionally provided with correction module 15, by the correction module 15 of monitor station 1 by two gas instantaneous delivery values
Carry out comparing calculation, obtain new flow dot factor, be then transported on new correction coefficient to ultrasonic wave gas meter, ultrasonic wave gas
Table carries out oneself's coefficient update, it is not necessary to manual operation, and process is shorter, correct more accurate, it is to avoid necessary acquisition is measured point and missed
After the recovery just can complete accuracy correction, many ultrasonic wave gas meters 2 can be carried out flow dot factor detection simultaneously, make flow dot factor
Trimming process efficiency improves, the time shortens and is applicable to batch detection.
The monitor station being provided with the monitor station time module 12 and storage data that gather real-time time on described monitor station 1 is deposited
Storage module 13.Record monitor station control module 11 by described monitor station time module 12 and gather the real-time of gas instantaneous delivery value
Time, described monitor station memory module 13, by corresponding with real-time time for gas instantaneous delivery value storage, facilitates monitor station 1 with ultrasonic
The time unifying of ripple gas meter, flow meter 2, is also convenient for monitor station 1 and the gas instantaneous delivery value of synchronization is carried out comparing calculation.
Ultrasonic wave gas meter time module 22 and the ultrasonic wave gas of storage data it is provided with on described ultrasonic wave gas meter 2
Table memory module 23.By ultrasonic wave gas meter time module 22, record ultrasonic wave gas meter 2 gathers gas instantaneous delivery value
Acquisition time, and carry out the storage corresponding with acquisition time of gas instantaneous delivery value by ultrasonic wave gas meter memory module 23,
Be conducive to by ultrasonic wave gas communication module 24 by gas instantaneous delivery value together with real-time time from inspection ultrasonic wave gas meter 2
It is transferred to scaffold tower 1, facilitates monitor station 1 and ultrasonic wave gas meter 2 time unifying, the gas instantaneous delivery value of synchronization is carried out
Comparing calculation.
Described monitor station communication module 14 and ultrasonic wave gas meter communication module 24 carry out data by serial communication mode
Alternately.
Described monitor station communication module 14 and ultrasonic wave gas meter communication module 24 are by infrared communication mode number
According to communication.The use of two kinds of communication modes, makes correcting unit be applicable to different communication modes.
Above example only in order to the present invention is described and and unrestricted technical scheme described in the invention, although this explanation
Book is with reference to the above embodiments to present invention has been detailed description, but the present invention is not limited to above-mentioned specific embodiment party
Formula, the most any modifies to the present invention or equivalent, and all are without departing from the technical scheme of the spirit and scope of invention
And improve, it all should be contained in scope of the presently claimed invention.
Claims (8)
1. ultrasonic wave gas flow-meter dot factor correcting unit, including monitor station, described monitor station is provided with gas detecting tube
Road, described gas detecting pipeline can detect at least one ultrasonic wave gas meter simultaneously, described monitor station is provided with monitor station
Control module, correction module and monitor station communication module, described ultrasonic wave gas meter is provided with ultrasonic wave gas meter and controls mould
Block and ultrasonic wave gas meter communication module, described monitor station communication module and ultrasonic wave gas meter communication module carry out data friendship
Mutually.
2. correcting unit as claimed in claim 1, it is characterised in that: it is provided with the inspection gathering real-time time on described monitor station
Scaffold tower time module and the monitor station memory module of storage data.
3. correcting unit as claimed in claim 2, it is characterised in that: it is provided with ultrasonic wave gas on described ultrasonic wave gas meter
Table time module and the ultrasonic wave gas meter memory module of storage data.
4. correcting unit as claimed in claim 1, it is characterised in that: described monitor station communication module and ultrasonic wave gas meter lead to
Letter module carries out data interaction by serial communication mode.
5. correcting unit as claimed in claim 1, it is characterised in that: described monitor station communication module and ultrasonic wave gas meter lead to
Letter module carries out data interaction by infrared communication mode.
6. a ultrasonic wave gas flow-meter dot factor bearing calibration, it is characterised in that comprise the following steps:
Step one, starts monitor station detection function and ultrasonic wave gas meter detection function, and starts monitor station communication module simultaneously
And the data communication function between ultrasonic wave gas meter communication module；
Step 2, monitor station control module gathers the gas instantaneous delivery value in gas detecting pipeline, and monitor station time module is remembered
Record gathers the real-time time of gas instantaneous delivery value；
Step 3, ultrasonic wave gas module of meter control gathers the gas instantaneous delivery value by ultrasonic wave gas meter, and ultrasound wave fires
Gas meter time module record gathers the real-time time of gas instantaneous delivery value；
Step 4, the gas instantaneous delivery value of collection and real-time time are transferred to detection by communication module by ultrasonic wave gas meter
Platform；
Step 5, starts the correction module of monitor station, and correction module carries out the time unifying of monitor station and ultrasonic wave gas meter, right
The gas instantaneous delivery value of monitor station carries out comparing calculation with the gas instantaneous delivery value of corresponding temporal ultrasonic wave gas,
To new ultrasonic wave gas flow-meter dot factor；
Step 6, new flow dot factor is issued ultrasonic wave gas meter by the communication mode selected by monitor station；
Step 7, ultrasonic wave gas meter obtains new flow dot factor, updates, stores and apply.
7. coefficient correction method as claimed in claim 6, it is characterised in that: described step 4 comprises the steps:
During the collection of four a, the monitor station memory module storage gas instantaneous delivery value that collects of monitor station control module and correspondence
Between；When the gas instantaneous delivery value that ultrasonic wave gas meter memory module storage ultrasonic wave gas meter collects is with corresponding collection
Between；
Four b, use ultrasonic wave gas meter communication module in real time or non-real time is by gas instantaneous delivery value and corresponding
Real-time time is sent to monitor station.
8. coefficient correction method as claimed in claim 7, it is characterised in that: described non-real time can be that USB flash disk copies wink
Time flow value and corresponding collection real-time time；Can also be by sending data after the timing of ultrasonic wave gas meter intervalometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621562.7A CN106289459A (en) | 2016-08-02 | 2016-08-02 | Ultrasonic wave gas flow-meter dot factor correcting unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610621562.7A CN106289459A (en) | 2016-08-02 | 2016-08-02 | Ultrasonic wave gas flow-meter dot factor correcting unit and method |
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| CN106289459A true CN106289459A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610621562.7A Pending CN106289459A (en) | 2016-08-02 | 2016-08-02 | Ultrasonic wave gas flow-meter dot factor correcting unit and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827642A (en) * | 2019-03-29 | 2019-05-31 | 宁夏隆基宁光仪表股份有限公司 | A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication |
| CN113654628A (en) * | 2021-10-21 | 2021-11-16 | 浙江正泰仪器仪表有限责任公司 | Correction method and device for ultrasonic instrument |
| CN113884164A (en) * | 2021-12-06 | 2022-01-04 | 成都千嘉科技有限公司 | Self-adaptive calibration method of ultrasonic gas meter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674194A (en) * | 2013-12-31 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Verification system and verification method of electromagnetic flowmeter |
| CN203551051U (en) * | 2013-11-04 | 2014-04-16 | 浙江威星智能仪表股份有限公司 | Error correction device of ultrasonic wave gas meter |
| CN103968919A (en) * | 2013-01-30 | 2014-08-06 | 宁波水科电子科技有限公司 | Equipment and method for metering and automatically calibrating electronic water meter in production process |
-
2016
- 2016-08-02 CN CN201610621562.7A patent/CN106289459A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968919A (en) * | 2013-01-30 | 2014-08-06 | 宁波水科电子科技有限公司 | Equipment and method for metering and automatically calibrating electronic water meter in production process |
| CN203551051U (en) * | 2013-11-04 | 2014-04-16 | 浙江威星智能仪表股份有限公司 | Error correction device of ultrasonic wave gas meter |
| CN103674194A (en) * | 2013-12-31 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Verification system and verification method of electromagnetic flowmeter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827642A (en) * | 2019-03-29 | 2019-05-31 | 宁夏隆基宁光仪表股份有限公司 | A kind of ultrasonic wave gas meter calibration system and method based on WIFI communication |
| CN113654628A (en) * | 2021-10-21 | 2021-11-16 | 浙江正泰仪器仪表有限责任公司 | Correction method and device for ultrasonic instrument |
| CN113884164A (en) * | 2021-12-06 | 2022-01-04 | 成都千嘉科技有限公司 | Self-adaptive calibration method of ultrasonic gas meter |
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Application publication date: 20170104 |
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