Optical fiber grating multi-parameter comprehensive sensing experimental apparatus

Abstract

The present invention is multi-parameter comprehensive fiber grating sensing experiment instrument as one kind of physical and detection technology teaching instrument. The instrument includes measuring unit, sensing unit and fiber coupling link. The sensing unit includes frame, equal-thickness isosceles triangle cantilever beam fixed inside the frame, gravitational pendulum fixed to the bottom of the cantilever beam, two fiber gratings with the same parameters adhered symmetrically on two sides of the cantilever beam, micro displacement meter fixed horizontally to one side of the frame, micro obliquity meter fixed vertically on the other side of the frame and electromagnetic coil fixed inside the bottom of the frame. The instrument may be used in detecting current, obliquity, vibration and displacement, performing various fiber experiment, etc. and is suitable for use in relevant teaching experiments.

Description

technical field [0001] The invention relates to a fiber grating sensing experiment instrument, which belongs to the technical field of teaching experiment instruments for physics, optics, optoelectronics, precision instruments and detection technology. Background technique [0002] At present, the current, vibration, displacement, and tilt angle teaching experiments used in the prior art mostly use certain special instruments and equipment. If you want to carry out teaching experiments or demonstrations on the above-mentioned parameters, you need to purchase multiple different instruments and equipment. Not only increased the expenditure, but also increased the required experimental space. Fiber Bragg Grating Sensing Experimental Instrument is rarely used in teaching experiments. At present, Tianjin Gangdong Science and Technology Development Co., Ltd. has developed a SGQ-1 Fiber Bragg Grating Sensing Experimental Instrument. The instrument consists of a testing unit and a s...

AI Technical Summary

Problems solved by technology

This kind of fiber grating sensing experiment instrument has the following deficiencies: ① The parameters that can be measured are only two kinds of temperature and strain, which are the most basic experimental content. During the experiment, students can only understand the sensing principle of fiber grating itself, and the experiment content is relatively simple and monotonous, which fails to broaden the experimental thinking, cultivate students' creative thinking ability and comprehensive experimental hands-on ability

② The high price of experimental instruments makes it difficult for general colleges and universities to purchase a certain number of experimental instruments at the same time, which affects teaching arrangements and experimental results to a certain extent

③Students cannot independently develop new experimental content based on existing experimental devices

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