Fiber Bragg grating array type oil tank liquid level sensing system

A technology of fiber optic Bragg and Bragg grating, which is applied in liquid level indicators, liquid/fluid solid measurement, instruments, etc. It can solve the problems of poor adaptability to oily environment, low measurement accuracy, small measurement range, etc., so as to facilitate maintenance and inspection And the effects of replacement, high measurement accuracy, and low manufacturing cost

Inactive Publication Date: 2021-07-20
WUHAN UNIV OF TECH
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Problems solved by technology

[0004] The present invention provides an optical fiber Bragg grating array type oil tank liquid level sensing system, which solves the problem of complex devices, low measurement accuracy, small measurement range and poor adaptability to oily environment in the optical fiber grating liquid level sensor in the prior art And other issues

Method used

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  • Fiber Bragg grating array type oil tank liquid level sensing system
  • Fiber Bragg grating array type oil tank liquid level sensing system
  • Fiber Bragg grating array type oil tank liquid level sensing system

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Embodiment Construction

[0025] In order to better understand the above technical solution, the above-described technical scheme will be described in detail below in conjunction with the drawings and specific embodiments.

[0026] This embodiment provides a fiber-backer grating array fuel tank liquid level sensor system, including: fiber Bragg grating array tank liquid level sensor and fiber grating demodulator. Among them, the fiber Bragg grating array tank liquid level sensor includes: fiber, Prague grating measurement point, capillary tube; the optical fiber is placed within the capillary tube; several of the Prague grating measuring point is disposed in the optical fiber The measuring point array is formed; the fiber Bragg grating array fuel tank liquid level sensor is accessed into the fiber grating demodulator by the optical fiber.

[0027] The fiber grating demodulator is used to observe the wavelength drift information of all of the Prague grating points, and obtain the liquid level position infor...

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Abstract

The invention belongs to the technical field of optical fiber sensing, and discloses a fiber bragg grating array type oil tank liquid level sensing system which comprises a fiber bragg grating array type oil tank liquid level sensor and a fiber bragg grating demodulator. The optical fiber Bragg grating array type oil tank liquid level sensor comprises an optical fiber, a Bragg grating measuring point and a capillary sleeve. The optical fiber is placed in the capillary sleeve; a plurality of Bragg grating measuring points are arranged on the optical fiber and form a measuring point array; and the fiber bragg grating array type oil tank liquid level sensor is connected to the fiber bragg grating demodulator through an optical fiber. The system can solve the problems that in the prior art, an optical fiber grating liquid level sensor is complex in device, low in measurement precision, small in measurement range, poor in oil contamination environment adaptability and the like, and has the advantages of being high in applicability, high in measurement precision, high in response speed, high in stability, small in dimension and small in size.

Description

Technical field [0001] The present invention belongs to the field of fiber optic sensing technology, and more particularly to a fiber-optic Bragg grating array tank liquid level sensing system. Background technique [0002] At present, fiber optic sensors are widely used in various fields, and have high sensitivity, corrosion resistance, high temperature resistance, anti-electromagnetic interference, good security. In terms of liquid level sensors, traditional capacitive, electromagnetic, and ultrasonic liquid level sensors are discarded, and the fiber grating sensor measures liquid level has become the main direction of current research. [0003] The current fiber grating liquid level sensor still has its own defects, and the problems in the measurement have not been effectively resolved. For example, a plastic fiber level sensor based on optical time domain reflection techniques, the measurement principle is a picosecond pulse visible light emitted by the picosecond laser into ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/292
CPCG01F23/292
Inventor 宋涵郭哲源江涛蔡子健刘向东唐世苒郭秦旭邹海奇李泽萱王照辉
Owner WUHAN UNIV OF TECH
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