CN104697592B - Ultrasonic flow method for synchronously measuring - Google Patents
Ultrasonic flow method for synchronously measuring Download PDFInfo
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- CN104697592B CN104697592B CN201510119793.3A CN201510119793A CN104697592B CN 104697592 B CN104697592 B CN 104697592B CN 201510119793 A CN201510119793 A CN 201510119793A CN 104697592 B CN104697592 B CN 104697592B
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- fluid
- temperature
- ultrasonic
- time difference
- collected
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 238000013480 data collection Methods 0.000 claims abstract 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000000205 computational method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Abstract
The present invention relates to ultrasonic water meter technical field, more particularly to a kind of ultrasonic flow method for synchronously measuring includes the following steps：(A) while ultrasonic wave is acquired along fluid countercurrent current, the time difference Δ t of fair current and fluid temperature (F.T.) T and is stored, wherein Δ ti、TiThe data that ith measurement obtains are indicated respectively；(B) by the response time T of temperature sensorREDivided by step A data collection period t and rounding obtain constant m；(C) according to the collected time difference Δ t of ithi, the i-th+m time collected fluid temperature (F.T.) Ti+mAnd solution of equation obtains the instantaneous velocity V of fluidi；(D) according to the instantaneous velocity V of fluidiCalculate fluid flow.By collected ultrasonic wave along fluid countercurrent current, the time difference Δ t of fair currentiWith corresponding real fluid temperature Ti+mActual flow is obtained as same group of data processing, result can be very accurate, avoids phenomenon devious when synchronous acquisition ultrasonic parameters and actual temperature.
Description
Technical field
The present invention relates to ultrasonic water meter technical field, more particularly to a kind of ultrasonic flow method for synchronously measuring.
Background technology
It is presently used for the ultrasonic calorimeter and water meter of various places, it will be to measured by it when calculating flow
The parameters such as the time difference carry out temperature adjustmemt, and temperature used by current amendment and computational methods is all to measure the same of arrival time difference
When the temperature that measures.In fact, the temperature measured by the platinum resistor temperature measuring sensor of measuring temperature is that there are one stagnant at present
Time (often at 15 seconds or so) afterwards, so the computational methods of current this nonsynchronous temperature adjustmemt are in measured fluid
Temperature when very fast variation occurs, there are errors for the flow calculated, also, in a short time, and temperature becomes
In the case of change is more apparent, error is bigger.
Invention content
The purpose of the present invention is to provide a kind of ultrasonic flow method for synchronously measuring, can avoid leading because of temperature lag
The error of cause improves the accuracy of flow measurement.
Compared with prior art, there are following technique effects by the present invention：By collected ultrasonic wave along fluid countercurrent current, fair current
Time difference Δ tiWith corresponding real fluid temperature Ti+mActual flow, result are obtained as same group of data processing
Can be very accurate, avoid phenomenon devious when synchronous acquisition ultrasonic parameters and actual temperature.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail.
As the preferred embodiment of the present invention, in the step B, the response time T of temperature sensorREIt is collection period t
Integral multiple.If not if integral multiple, the time difference Δ t in step CiWith fluid temperature (F.T.) Ti+mA little error is still remained,
Although the error very little is also still existing, after above-mentioned setting, the presence of this error is avoided, ensures fluid temperature (F.T.)
Ti+mPrecisely acquisition time difference DELTA tiWhen corresponding actual temperature parameter, and when data processing, without taking
It is whole, optimize processing speed.
Claims (1)
1. a kind of ultrasonic flow method for synchronously measuring, includes the following steps：
(A) while ultrasonic wave is acquired along fluid countercurrent current, the time difference Δ t of fair current and fluid temperature (F.T.) T and is stored, wherein Δ ti、
TiThe data that ith measurement obtains are indicated respectively；
(B) by the response time T of temperature sensorREDivided by step A data collection period t and rounding obtain constant m；Temperature
The response time T of sensorREIt is the integral multiple of collection period t；
(C) according to the collected time difference Δ t of ithi, the i-th+m time collected fluid temperature (F.T.) Ti+mAnd in following equations
Solve the instantaneous velocity V of fluidi：Its
In, θ is
The direction of propagation of ultrasonic wave and the flow direction angle of fluid, d are upstream, downstream ultrasonic wave transducer along fluid flowing side
To spacing, Ci+mBe fluid temperature (F.T.) be Ti+mWhen ultrasonic velocity；
(D) according to the instantaneous velocity V of fluidiCalculate fluid flow：Q=ΣiS·ViT, wherein S is the pipe flowed through for fluid
The sectional area in road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119793.3A CN104697592B (en) | 2015-03-18 | 2015-03-18 | Ultrasonic flow method for synchronously measuring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119793.3A CN104697592B (en) | 2015-03-18 | 2015-03-18 | Ultrasonic flow method for synchronously measuring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104697592A CN104697592A (en) | 2015-06-10 |
| CN104697592B true CN104697592B (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510119793.3A Expired - Fee Related CN104697592B (en) | 2015-03-18 | 2015-03-18 | Ultrasonic flow method for synchronously measuring |
Country Status (1)
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949724B (en) * | 2015-07-10 | 2017-11-21 | 安徽水联水务科技有限公司 | The dynamic econometric analysis of supersonic wave metering instrument |
| CN111189501A (en) * | 2020-03-16 | 2020-05-22 | 宁夏隆基宁光仪表股份有限公司 | Flow calculation and correction method for ultrasonic gas meter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808381A (en) * | 2014-03-04 | 2014-05-21 | 华南理工大学 | Temperature influence eliminating method for time difference ultrasonic flowmeter |
| CN103913203A (en) * | 2014-04-14 | 2014-07-09 | 姜跃炜 | Ultrasonic water meter coefficient processing method |
| CN104303023A (en) * | 2012-05-17 | 2015-01-21 | 松下知识产权经营株式会社 | Flow rate measurement device |
-
2015
- 2015-03-18 CN CN201510119793.3A patent/CN104697592B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104303023A (en) * | 2012-05-17 | 2015-01-21 | 松下知识产权经营株式会社 | Flow rate measurement device |
| CN103808381A (en) * | 2014-03-04 | 2014-05-21 | 华南理工大学 | Temperature influence eliminating method for time difference ultrasonic flowmeter |
| CN103913203A (en) * | 2014-04-14 | 2014-07-09 | 姜跃炜 | Ultrasonic water meter coefficient processing method |
Non-Patent Citations (1)
| Title |
|---|
| 基于MSP430的小口径低功耗超声波流量计设计;李忠虎 等;《仪表技术与传感器》;20130831(第11期);第19-21页 * |
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| CN104697592A (en) | 2015-06-10 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 |