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Real-time liquid level measurement and analysis method based on distributed optical fiber liquid level sensor

A technology of liquid level sensor and distributed optical fiber, which is applied in the direction of liquid/fluid solid measurement, measuring device, liquid level indicator, etc., can solve the problem that it is difficult to meet the demand for spatial resolution of liquid level measurement, and improve the measurement accuracy and coverage, fast response, and wide coverage

Active Publication Date: 2021-11-26
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

Therefore, it is difficult to meet the spatial resolution requirements of liquid level measurement only through temperature measurement

Method used

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  • Real-time liquid level measurement and analysis method based on distributed optical fiber liquid level sensor
  • Real-time liquid level measurement and analysis method based on distributed optical fiber liquid level sensor
  • Real-time liquid level measurement and analysis method based on distributed optical fiber liquid level sensor

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments disclosed in the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] Such as figure 1 , in this embodiment, the real-time liquid level measurement and analysis method based on the distributed optical fiber liquid level sensor includes:

[0057] Step 101, acquire the central wavelength and intensity of each measurement point of the distributed optical fiber liquid level sensor.

[0058] In this embodiment, the distributed optical fiber liquid level sensor may specifically refer to: a distributed optical fiber liquid level sensor in which long-period optical fiber gratings are written continuously, and each long-period optical fiber grating adopts an identical writing method. Further, the measurement point may specifically refer to: a long-period fiber grating. Among them, in different environmen...

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Abstract

The invention discloses a real-time liquid level measurement and analysis method based on a distributed optical fiber liquid level sensor. The real-time liquid level measurement and analysis method comprises the steps: obtaining the central wavelength and intensity of each measurement point of the distributed optical fiber liquid level sensor; establishing a synchronous sample capacity database according to the acquired central wavelength and intensity of each measurement point; determining a conversion cumulative number according to the established synchronous sample capacity database; according to the conversion cumulative number, performing judging to obtain a sudden change point; and according to the sudden change point, determining the real-time liquid level of the distributed optical fiber liquid level sensor. The key technical problem of distributed optical fiber liquid level real-time analysis and calculation is solved, and the requirements of liquid level sensing and real-time data output in the future can be met.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, and in particular relates to a real-time liquid level measurement and analysis method based on a distributed optical fiber liquid level sensor. Background technique [0002] Distributed optical fiber liquid level measurement technology uses optical fiber as a sensitive element and transmission channel to measure the light wave parameters of each point on the optical fiber to obtain quasi-distributed liquid level information. It has high sensitivity, large dynamic range, wide frequency range, low power consumption, Long life, corrosion resistance, high and low temperature resistance, anti-electromagnetic interference and other advantages. In liquid propellant storage tanks in flammable, explosive, ultra-low temperature and high-pressure environments, the optical fiber liquid level sensor can realize passive and intrinsically safe liquid level measurement of the sensitive head, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/292
CPCG01F23/292
Inventor 梅影杨潇君马胜利杜瑞白雪菲
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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