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Method for measuring height of liquid gas

A technology of liquid gas and measurement method, which is applied in the direction of liquid level indicator for physical variable measurement, etc. It can solve the problems of inability to detect liquid level intuitively and monitor liquid level changes, etc., and achieve a strong practical effect

Inactive Publication Date: 2017-09-29
镇江严彦气体有限公司
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Problems solved by technology

[0002] Liquid gas is a gas under high pressure. It is widely used in daily life due to its small size and easy transportation. Since its filling process is carried out under high pressure and low temperature, it is impossible to intuitively detect the liquid level of the liquid. A suitable liquid level detection method is very necessary, and the common liquid gas liquid level detection method is usually detected after the filling is completed, and it is impossible to monitor the liquid level change during the filling process

Method used

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Embodiment 1

[0012] The method for measuring the height of liquid gas in the present invention includes the following steps 1. Establish a state space model according to the actual measurement data, and carry out particle set initialization to generate a group of particle sets; the state space model in the present invention includes liquid of interference noise and linear variables bit change model. The state-space model is obtained from state transition equations and system observation equations.

[0013] Step 2: Use a temperature sensor to detect the temperature value of the liquid in the tank;

[0014] Step 3 calculates the estimated value of the liquid level height based on the state space model, particle set and temperature, and corrects the estimated value to obtain an accurate value. The correction process adopts the circular sampling method until the sampling point taken is the last point.

[0015] The detection systems in the present invention are all realized by computer modules...

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Abstract

The invention relates to a method for measuring the liquid level of liquid gas, in particular to a method for measuring the liquid level of filled liquid. The method comprises the following steps: establishing a state space model; generating a particle set according to measured data; detecting the temperature of the liquid gas; calculating a liquid height estimated value according to the state space model, the particle set and the temperature; correcting the estimated value; and circulating the process until the final sampling point is detected. The sampling points are collected circularly, change of the liquid level is provided in real time, the filling speed can be controlled by workers conveniently through liquid level information, and the practicality is high.

Description

technical field [0001] The invention relates to a method for measuring the liquid level of liquid gas, in particular to a method for measuring the liquid level of filling liquid. Background technique [0002] Liquid gas is a gas under high pressure. It is widely used in daily life due to its small size and easy transportation. Since its filling process is carried out under high pressure and low temperature, it is impossible to intuitively detect the liquid level of the liquid. Appropriate liquid level detection methods are very necessary, and common liquid gas liquid level detection methods are usually detected after filling, and cannot monitor liquid level changes during the filling process. Contents of the invention [0003] In order to solve the shortcomings of the above-mentioned prior art, the present invention provides a liquid gas height measurement method, which can provide real-time liquid level changes during the filling process. [0004] The technical solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/22
CPCG01F23/22
Inventor 周玉洁周宏峰
Owner 镇江严彦气体有限公司
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