CN112833999A - Rapid meter calibration method for ultrasonic water meter - Google Patents
Rapid meter calibration method for ultrasonic water meter Download PDFInfo
- Publication number
- CN112833999A CN112833999A CN202110238443.4A CN202110238443A CN112833999A CN 112833999 A CN112833999 A CN 112833999A CN 202110238443 A CN202110238443 A CN 202110238443A CN 112833999 A CN112833999 A CN 112833999A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- ratio
- water meter
- pulse width
- ultrasonic water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005259 measurement Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a quick meter calibrating method of an ultrasonic water meter, which comprises the following steps: continuously acquiring the forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period; calculating and obtaining multiple groups of forward and reverse time differences in a zero-flow state based on the forward propagation time and the reverse propagation time; obtaining fluctuation intervals of the positive and negative time differences based on the multiple groups of positive and negative time differences; and determining a compensation value for flow metering based on the fluctuation interval of the positive and negative time difference. The invention can be convenient for realizing quick meter calibration.
Description
Technical Field
The invention relates to the technical field of ultrasonic water meters, in particular to a quick meter calibration method of an ultrasonic water meter.
Background
The existing ultrasonic quick response production method based on the time difference algorithm is in a blank state, no particularly suitable method exists for quickly calibrating a meter in the existing checked data, the existing meter calibrating mode basically adopts a mechanical correcting method, errors are corrected after flow tests are carried out for multiple times, and the operation is circulated until the requirements are met. The method is not suitable for the characteristics of the electronic water meter, can not display the characteristics of the electronic water meter, wastes time and increases production cost, and workers can do work only by knowing the product to a certain extent. At present, the invention can save the production cost and also provides a certain guarantee for the rapid development of the electronic watch.
Disclosure of Invention
The invention provides a quick meter calibrating method for an ultrasonic water meter, which can conveniently realize quick meter calibration.
In order to solve the technical problem, the invention provides a quick meter calibration method of an ultrasonic water meter, which comprises the following steps:
continuously acquiring the forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period;
calculating and obtaining multiple groups of forward and reverse time differences in a zero-flow state based on the forward propagation time and the reverse propagation time;
obtaining fluctuation intervals of the positive and negative time differences based on the multiple groups of positive and negative time differences;
and determining a compensation value for flow metering based on the fluctuation interval of the positive and negative time difference.
As a preferable aspect of the foregoing technical solution, the fast meter calibrating method further includes: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range.
As a preferable aspect of the foregoing technical solution, the determining a compensation value for flow rate measurement based on the fluctuation interval of the positive and negative time differences specifically includes: and obtaining a value with more positive and negative time differences within the continuous effective fluctuation interval according to the normal distribution of the positive and negative time differences, and selecting the obtained value with more positive and negative time differences for compensating corresponding flow in subsequent flow calculation.
Preferably, in the above technical solution, the pulse width ratio of the ultrasonic wave is a ratio of a pulse width corresponding to the initial threshold to a pulse width corresponding to the zero point.
As a preferred aspect of the above technical solution, calibrating the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter is within a set range specifically includes: and judging whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range or not, if so, calibrating to be qualified, and if not, adjusting the control value of the ultrasonic waves output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in the set range.
As a preferred aspect of the above technical solution, the determining whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically includes: and obtaining an ultrasonic output curve in a sine wave form based on the ultrasonic waves output by the ultrasonic water meter, determining an initial threshold reference line based on an initial threshold of ultrasonic output, and judging whether the ratio of the pulse width of the ultrasonic output curve corresponding to the initial threshold reference line in each sine period to the pulse width of the ultrasonic output curve corresponding to a zero line in each sine period is in a set range.
Preferably, the adjusting the control value of the ultrasonic wave output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter is within a set range specifically includes: the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range by adjusting an initial threshold value of ultrasonic wave output or adjusting an ultrasonic wave output curve.
Preferably, in the above technical solution, the set range of the ratio of the pulse width ratio is 50% to 95%, and correspondingly, the calibrating the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter is within the set range specifically includes: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to enable the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to be 50% -95%.
Preferably, before continuously acquiring the forward propagation time of the ultrasonic wave of the ultrasonic water meter in the zero-flow state and the reverse propagation time corresponding to the forward propagation time within the set time period, the fast meter calibration method further includes: and acquiring a control instruction, wherein the control instruction is used for controlling to continuously acquire the forward propagation time of the ultrasonic wave of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period.
Preferably, the control instruction is further configured to control and calibrate a ratio of a pulse width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range.
The invention provides a rapid meter calibration method of an ultrasonic water meter, which continuously obtains the forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero flow state and the reverse propagation time corresponding to the forward propagation time in a set time period, and calculates and obtains a plurality of groups of forward and reverse time differences in the zero flow state based on the forward propagation time and the reverse propagation time; then obtaining fluctuation intervals of the forward and reverse time differences based on the multiple groups of forward and reverse time differences; and finally, determining a compensation value for flow measurement based on the fluctuation interval of the positive and negative time difference, so that the invention can realize the process of quick meter calibration by setting a reasonable compensation value in the fluctuation interval of the positive and negative time difference, and the meter calibration process is simple and convenient.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic flow chart illustrating a method for quickly calibrating an ultrasonic water meter according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of an ultrasonic output curve in an embodiment of the invention;
fig. 3 shows a schematic diagram of an ultrasonic output curve in an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a method for quickly calibrating an ultrasonic water meter, including:
step 100: continuously acquiring the forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period;
step 200: calculating and obtaining multiple groups of forward and reverse time differences in a zero-flow state based on the forward propagation time and the reverse propagation time;
step 300: obtaining fluctuation intervals of the positive and negative time differences based on the multiple groups of positive and negative time differences;
step 400: and determining a compensation value for flow metering based on the fluctuation interval of the positive and negative time difference.
In the method for quickly calibrating an ultrasonic water meter provided by this embodiment, forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero-flow state and reverse propagation time corresponding to the forward propagation time are continuously obtained within a set time period, and a plurality of sets of forward and reverse time differences in the zero-flow state are obtained by calculation based on the forward propagation time and the reverse propagation time; then obtaining fluctuation intervals of the forward and reverse time differences based on the multiple groups of forward and reverse time differences; and finally, determining a compensation value for flow measurement based on the fluctuation interval of the positive and negative time difference, so that the invention can realize the process of quick meter calibration by setting a reasonable compensation value in the fluctuation interval of the positive and negative time difference, and the meter calibration process is simple and convenient.
In a further implementation manner of this embodiment, the fast calibration method further includes: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range.
In this embodiment, the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter needs to be calibrated, so that the calibration accuracy can be further improved.
Specifically, the ultrasonic water meter has positive and negative time differences in a zero-flow state due to installation errors, pipeline machining errors and the like, and errors still possibly occur in the subsequent actual use process due to the positive and negative time differences in the zero-flow state only through setting of a compensation value to correct the zero-flow state, so that errors can be prevented from occurring in the subsequent flow measurement process by calibrating the pulse width ratio of the ultrasonic waves in the embodiment.
In addition, the ultrasonic water meter in this embodiment has two transducers, which are a first transducer and a second transducer, respectively, and in a state where no fluid passes through the ultrasonic water meter, that is, in a state of zero flow, a time from the ultrasonic wave emitted from the first transducer to the reception of the second transducer is a forward propagation time, and a time from the ultrasonic wave emitted from the second transducer to the reception of the first transducer is a reverse propagation time.
In a further implementation manner of this embodiment, the determining a compensation value for flow rate measurement based on the fluctuation interval of the positive and negative time differences specifically includes: and obtaining a value with more positive and negative time differences within the continuous effective fluctuation interval according to the normal distribution of the positive and negative time differences, and selecting the obtained value with more positive and negative time differences for compensating corresponding flow in subsequent flow calculation.
The compensation value in the embodiment is simple and convenient to obtain, and the data operation amount can be greatly reduced while the precision is ensured, so that the process of calibrating the meter is improved.
Referring to fig. 2 to fig. 3, in a further implementation manner of the present embodiment, a pulse width ratio of the ultrasonic wave is a ratio of a pulse width corresponding to the initial threshold to a pulse width corresponding to the zero point.
Referring to fig. 2 to fig. 3, in a further implementation manner of the embodiment, calibrating the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically includes: and judging whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range or not, if so, calibrating to be qualified, and if not, adjusting the control value of the ultrasonic waves output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in the set range.
In the embodiment, the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter can be controlled within a set range in the meter calibration process, the meter calibration precision is improved, and errors are prevented from occurring in the subsequent flow measurement process.
Referring to fig. 2 to fig. 3, in a further implementation manner of the embodiment, the determining whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically includes: and obtaining an ultrasonic output curve in a sine wave form based on the ultrasonic waves output by the ultrasonic water meter, determining an initial threshold reference line based on an initial threshold of ultrasonic output, and judging whether the ratio of the pulse width of the ultrasonic output curve corresponding to the initial threshold reference line in each sine period to the pulse width of the ultrasonic output curve corresponding to a zero line in each sine period is in a set range.
As shown in fig. 2 and 3, the ultrasonic output curve is substantially sinusoidal, the ratio of the width occupied by the ultrasonic output curve in each sinusoidal period on the initial threshold reference line to the width occupied by the ultrasonic output curve in the same sinusoidal period on the zero value line is the pulse width ratio, and P in fig. 3 is the width occupied by the ultrasonic output curve on the initial threshold reference line.
Specifically, in this embodiment, parameters of ultrasonic output, particularly parameters such as an initial threshold value, are obtained by calibrating the pulse width ratio, so that ultrasonic output can be performed according to the parameters in a subsequent flow metering process, errors occurring in the subsequent flow metering process can be reduced, and the metering accuracy of the ultrasonic water meter is improved.
In a further implementation manner of this embodiment, adjusting the control value of the ultrasonic wave output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter is in the set range specifically includes: the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range by adjusting an initial threshold value of ultrasonic wave output or adjusting an ultrasonic wave output curve.
In a further implementation manner of this embodiment, the set range of the ratio of the pulse width ratio is 50% to 95%, and correspondingly, the calibrating the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic wave output by the ultrasonic water meter is within the set range specifically includes: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to enable the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to be 50% -95%.
Specifically, the ultrasonic wave with the pulse width ratio ranging from 50% to 95% is the ultrasonic wave in the optimal output state, the ultrasonic wave within the range is more stable in output working state, and the error of the ultrasonic water meter in the flow metering process can be reduced.
In a further implementation manner of this embodiment, before continuously acquiring, within a set time period, a forward propagation time of an ultrasonic wave of the ultrasonic water meter in a zero-flow state and a reverse propagation time corresponding to the forward propagation time, the fast meter calibration method further includes: and acquiring a control instruction, wherein the control instruction is used for controlling to continuously acquire the forward propagation time of the ultrasonic wave of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period.
In a further implementation manner of this embodiment, the control instruction is further configured to control and calibrate the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range.
Still can realize school table process through command control in this embodiment, it can be with establishing the connection through communication protocol between remote platform and the supersound water gauge, can make school table process simple more, convenient, reduces operating personnel's the operation degree of difficulty, in addition, it can also improve the efficiency of school table.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A quick meter calibration method of an ultrasonic water meter is characterized by comprising the following steps:
continuously acquiring the forward propagation time of ultrasonic waves of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period;
calculating and obtaining multiple groups of forward and reverse time differences in a zero-flow state based on the forward propagation time and the reverse propagation time;
obtaining fluctuation intervals of the positive and negative time differences based on the multiple groups of positive and negative time differences;
and determining a compensation value for flow metering based on the fluctuation interval of the positive and negative time difference.
2. The fast method for calibrating a meter according to claim 1, further comprising: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range.
3. The method for fast calibrating a meter according to claim 1, wherein the determining the compensation value for the flow measurement based on the fluctuation interval of the positive and negative time differences specifically comprises: and obtaining a value with more positive and negative time differences within the continuous effective fluctuation interval according to the normal distribution of the positive and negative time differences, and selecting the obtained value with more positive and negative time differences for compensating corresponding flow in subsequent flow calculation.
4. The method according to claim 2, wherein the pulse width ratio of the ultrasonic wave is a ratio of a pulse width corresponding to the initial threshold to a pulse width corresponding to the zero point.
5. The method of claim 2, wherein calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically comprises: and judging whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range or not, if so, calibrating to be qualified, and if not, adjusting the control value of the ultrasonic waves output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in the set range.
6. The method of claim 5, wherein the step of determining whether the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically comprises: and obtaining an ultrasonic output curve in a sine wave form based on the ultrasonic waves output by the ultrasonic water meter, determining an initial threshold reference line based on an initial threshold of ultrasonic output, and judging whether the ratio of the pulse width of the ultrasonic output curve corresponding to the initial threshold reference line in each sine period to the pulse width of the ultrasonic output curve corresponding to a zero line in each sine period is in a set range.
7. The method of claim 5, wherein the adjusting the control value of the ultrasonic waves output by the ultrasonic water meter until the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range specifically comprises: the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter is in a set range by adjusting an initial threshold value of ultrasonic wave output or adjusting an ultrasonic wave output curve.
8. The method for rapidly calibrating a meter according to claim 7, wherein the ratio of the pulse width ratios is set within a range of 50% to 95%, and accordingly, the calibrating of the ratio of the pulse width ratios of the ultrasonic waves output by the ultrasonic water meter so that the ratio of the pulse width ratios of the ultrasonic waves output by the ultrasonic water meter is within the set range specifically comprises: and calibrating the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to enable the ratio of the pulse width ratio of the ultrasonic waves output by the ultrasonic water meter to be 50% -95%.
9. The method of claim 2, wherein before continuously acquiring the forward propagation time of the ultrasonic water meter in the zero-flow state and the reverse propagation time corresponding to the forward propagation time within the set time period, the method further comprises: and acquiring a control instruction, wherein the control instruction is used for controlling to continuously acquire the forward propagation time of the ultrasonic wave of the ultrasonic water meter in a zero-flow state and the reverse propagation time corresponding to the forward propagation time within a set time period.
10. The method of claim 9, wherein the control instructions are further configured to control calibration of the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter such that the ratio of the pulse-to-width ratio of the ultrasonic waves output by the ultrasonic water meter is within a set range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238443.4A CN112833999A (en) | 2021-03-04 | 2021-03-04 | Rapid meter calibration method for ultrasonic water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238443.4A CN112833999A (en) | 2021-03-04 | 2021-03-04 | Rapid meter calibration method for ultrasonic water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112833999A true CN112833999A (en) | 2021-05-25 |
Family
ID=75934500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110238443.4A Pending CN112833999A (en) | 2021-03-04 | 2021-03-04 | Rapid meter calibration method for ultrasonic water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112833999A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172518A (en) * | 2003-12-09 | 2005-06-30 | Murata Mfg Co Ltd | Circuit for arrival time detection of ultrasonic waves in ultrasonic sensor, and ultrasonic flowmeter using the same |
| US20070186680A1 (en) * | 2004-05-22 | 2007-08-16 | Tobias Lang | Determination of a reception time of an ultrasonic signal by means of pulse shape detection |
| CN105841762A (en) * | 2016-03-17 | 2016-08-10 | 广州周立功单片机科技有限公司 | Supersonic wave water meter flow metering method and system |
| CN105890685A (en) * | 2016-06-28 | 2016-08-24 | 电子科技大学 | Ultrasonic flow measuring device based on accumulated phase difference |
| CN107655552A (en) * | 2017-11-14 | 2018-02-02 | 南京林洋电力科技有限公司 | A kind of Ultrasonic water meter flow velocity modification method based on the non-measured section of propagation time difference and drift error |
| KR101899409B1 (en) * | 2018-02-14 | 2018-10-29 | 주식회사 케이디 | Ultrasonic wave water meter for convergence and integration having temperature compensation algorithm |
-
2021
- 2021-03-04 CN CN202110238443.4A patent/CN112833999A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172518A (en) * | 2003-12-09 | 2005-06-30 | Murata Mfg Co Ltd | Circuit for arrival time detection of ultrasonic waves in ultrasonic sensor, and ultrasonic flowmeter using the same |
| US20070186680A1 (en) * | 2004-05-22 | 2007-08-16 | Tobias Lang | Determination of a reception time of an ultrasonic signal by means of pulse shape detection |
| CN105841762A (en) * | 2016-03-17 | 2016-08-10 | 广州周立功单片机科技有限公司 | Supersonic wave water meter flow metering method and system |
| CN105890685A (en) * | 2016-06-28 | 2016-08-24 | 电子科技大学 | Ultrasonic flow measuring device based on accumulated phase difference |
| CN107655552A (en) * | 2017-11-14 | 2018-02-02 | 南京林洋电力科技有限公司 | A kind of Ultrasonic water meter flow velocity modification method based on the non-measured section of propagation time difference and drift error |
| KR101899409B1 (en) * | 2018-02-14 | 2018-10-29 | 주식회사 케이디 | Ultrasonic wave water meter for convergence and integration having temperature compensation algorithm |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101846572B (en) | Method for decreasing basic error of pressure sensor | |
| CN107655552B (en) | A kind of Ultrasonic water meter flow velocity modification method for propagating the time difference and drift error based on non-measured section | |
| CN110081864A (en) | A kind of water-depth measurement aggregate delay correcting method for taking water depth value into account | |
| CN104390680B (en) | Transit time ultrasonic ripple heat quantity flow error correcting method | |
| CN101196394A (en) | Optimized least square appraisement method for roundness of minor segment circular arc | |
| CN111024986B (en) | Ultrasonic anemorumbometer data calibration method, device and equipment and storage medium | |
| CN102879061A (en) | Water gauge error correction method based on fitted equation | |
| CN112833999A (en) | Rapid meter calibration method for ultrasonic water meter | |
| CN104930991B (en) | Displacement monitoring method and system for monitoring displacement based on carrier phase | |
| KR102055055B1 (en) | Electronic Flow Meter and The Measurement Error Correcting Methode | |
| CN114894276A (en) | Water meter online calibration method and system | |
| CN104142299A (en) | Pressure compensation method of infrared methane sensor | |
| CN116182969A (en) | Quick correction method for error of ultrasonic gas meter | |
| CN113884164B (en) | Self-adaptive calibration method of ultrasonic gas meter | |
| CN112967825B (en) | Reactivity measurement method based on correction signal uncertainty analysis | |
| CN105675074A (en) | Liquid flow measuring method, device and system | |
| CN114485863A (en) | Flow error correction method, system, computer and medium for ultrasonic water meter | |
| CN109635421B (en) | Weibull model-based dynamic optimization method for detection period of general pressure gauge | |
| CN107796492B (en) | Online calibration method for ultrasonic gas meter | |
| CN110130421B (en) | Foundation pit deformation monitoring method and system | |
| CN104964696A (en) | Total station electronic tacheometer automatic wireless remote control and calibration device and method | |
| CN116147724B (en) | Metering method suitable for ultrasonic water meter | |
| CN114563019B (en) | Single-beam time delay calibration method | |
| CN113192659B (en) | Nuclear reactor reactivity measurement method based on primary neutron signal average sampling | |
| CN116147741B (en) | NB-IoT based ultrasonic water meter flow calibration method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |