Optical fiber grating multi-parameter comprehensive sensing experimental apparatus

Abstract

The utility model relates to an optical fiber grating multi-parameter comprehensive sensing experiment instrument, which belongs to the teaching instrument of physics and detection technology. The instrument includes a measurement unit, a sensing unit and a fiber-optic coupling link. The sensing unit includes a frame, an isosceles triangular cantilever beam of equal thickness encapsulated and fixed on the frame, a gravity pendulum fixed at the bottom of the cantilever beam, and two optical fiber gratings with the same parameters symmetrically pasted on both sides of the cantilever beam, The displacement micrometer head fixed horizontally on one side of the frame, the tilt angle micrometer head vertically fixed on the other side of the frame, and the electromagnetic coil fixed on the inner bottom of the frame. The instrument can realize current, tilt angle, vibration and displacement detection, and can also be expanded to conduct optical fiber light guiding phenomenon experiments, optical fiber bending loss experiments, temperature detection experiments, etc. It is suitable for teaching experiments of physics, optics, optoelectronics, precision instruments and detection technology related majors in colleges and universities. It has the characteristics of simple structure, low cost, convenient operation and easy processing and production.

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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