CN107218983A - A kind of liquid gas height measurement method - Google Patents
A kind of liquid gas height measurement method Download PDFInfo
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- CN107218983A CN107218983A CN201710491305.0A CN201710491305A CN107218983A CN 107218983 A CN107218983 A CN 107218983A CN 201710491305 A CN201710491305 A CN 201710491305A CN 107218983 A CN107218983 A CN 107218983A
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- China
- Prior art keywords
- liquid level
- state
- liquid
- space model
- measuring method
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to a kind of measuring method of liquid gas liquid level, more particularly to a kind of level measuring method of perfusion liquid, including state-space model is set up, and particle collection is generated according to measured data, detect the temperature of liquid gas；Liquid level estimate is obtained according to state-space model, particle collection and temperature computation；Estimate is modified；Circulation said process is until detect last sampled point.Sampled point is taken in present invention circulation, and liquid level change is provided in real time, facilitates staff to control filling speed by liquid level information, practical.
Description
Technical field
The present invention relates to a kind of measuring method of liquid gas liquid level, more particularly to a kind of level gauging side for irrigating liquid
Method.
Background technology
Liquid gas is the gas under high pressure, because its small volume, the easily advantage such as transport are employed extensively in life, by
Carried out in its pouring process under high pressure low temperature, thus can not intuitively detect the liquid level residing for liquid, using suitable
Liquid-level detecting method is very necessary, and common liquid gas liquid-level detecting method be usually it is filling after the completion of detect, it is impossible to
Liquid level change is monitored in pouring process.
The content of the invention
There is provided a kind of liquid gas height measurement method, the party in order to solve above-mentioned the deficiencies in the prior art by the present invention
Method can provide liquid level change in real time in pouring process.
The technical solution used in the present invention is：A kind of liquid gas height measurement method, including set up state space mould
Type, and particle collection is generated according to measured data, detect the temperature of liquid gas；According to state-space model, particle collection and temperature
Degree calculating obtains liquid level estimate；Estimate is modified；Circulation said process is until detect last sampling
Point.
Further, described state-space model includes the liquid level variation model of interference noise and linear variable.
Further, described state-space model is obtained according to state transition equation and systematic observation equation.
Further, described fluid temperature is obtained by sensor detection.
Further, each particle that the particle is concentrated is generated according to liquid level prior probability distribution.
Beneficial effect produced by the present invention：Sampled point is taken in present invention circulation, and liquid level change, convenient work are provided in real time
Personnel control filling speed by liquid level information, practical.
Embodiment
Further details of explanation is done to the present invention with reference to embodiment, it should be appreciated that of the invention
Protection domain do not limited by embodiment.
Embodiment 1：
Liquid gas height measurement method comprises the following steps 1, state sky is set up according to actual measurement data in the present invention
Between model, and carry out particle collection initialization, generation includes one group of particle collection；State-space model in the present invention is made an uproar including interference
The liquid level variation model of sound and linear variable.State-space model is obtained according to state transition equation and systematic observation equation.
Step 2 fills interior fluid temperature value using temperature sensor detection；
Step 3 obtains liquid level estimated value according to state-space model, particle collection and temperature computation, and estimated value is entered
Row amendment obtains exact value, and makeover process is from circulation sampling site method, until the sampled point taken is last point.
Detecting system in the present invention is realized by computer module, can be run after input program, and liquid level is changed
Detection, simple and convenient in real time.
Claims (5)
1. a kind of liquid gas height measurement method, it is characterised in that：Including setting up state-space model, and according to measured number
According to generation particle collection, the temperature of liquid gas is detected；Liquid level is obtained according to state-space model, particle collection and temperature computation
Estimate；Estimate is modified；Circulation said process is until detect last sampled point.
2. measuring method according to claim 1, it is characterised in that：Described state-space model include interference noise and
The liquid level variation model of linear variable.
3. measuring method according to claim 1, it is characterised in that：Described state-space model is according to state transfer side
Journey and systematic observation equation are obtained.
4. measuring method according to claim 1, it is characterised in that：Described fluid temperature is detected by sensor
Arrive.
5. measuring method according to claim 1, it is characterised in that：Each particle that the particle is concentrated is according to liquid level priori
Probability distribution is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491305.0A CN107218983A (en) | 2017-06-23 | 2017-06-23 | A kind of liquid gas height measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491305.0A CN107218983A (en) | 2017-06-23 | 2017-06-23 | A kind of liquid gas height measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107218983A true CN107218983A (en) | 2017-09-29 |
Family
ID=59950312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710491305.0A Pending CN107218983A (en) | 2017-06-23 | 2017-06-23 | A kind of liquid gas height measurement method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107218983A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982242A (en) * | 2020-08-14 | 2020-11-24 | 郑州铁路职业技术学院 | Low-frequency sound wave liquid level estimation method based on two-dimensional dynamic system model |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404108A (en) * | 2016-11-23 | 2017-02-15 | 西南交通大学 | Liquid nitrogen liquid level detection method and device |
-
2017
- 2017-06-23 CN CN201710491305.0A patent/CN107218983A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404108A (en) * | 2016-11-23 | 2017-02-15 | 西南交通大学 | Liquid nitrogen liquid level detection method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982242A (en) * | 2020-08-14 | 2020-11-24 | 郑州铁路职业技术学院 | Low-frequency sound wave liquid level estimation method based on two-dimensional dynamic system model |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170929 |
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| WD01 | Invention patent application deemed withdrawn after publication |