Multifunctional intelligent type laser speckle interference measuring device and method

Abstract

The invention discloses a multifunctional intelligent type laser speckle interference measuring device and a measuring method. Measurement of out-of-plane displacement of materials such as magnetic conduction and electric conduction materials under different temperature and pressure is achieved through combination of an optical alignment system, a beam splitter, a reflecting mirror, a material testing system, a charge coupled device (CCD) imaging system, temperature sensing technology and single chip technology. The optical alignment system has functions of alignment and spherical aberration elimination, and can ensure high-quality interference imaging. Out-of-plane displacement measuring tests of cylindrical samples, cube-shaped samples, cuboid samples and the like with different materials, shapes and sizes can be achieved by a material frame, and thus application range is wide. Strength of pressing can be judged by quantizing a rotation angle. Temperature of a tested object is improved by an electrical eddy current heating system so as to enable test researches to be free from influence of objective temperature environment. Accuracy of temperature measurement is improved by a temperature sensor and a single chip so that a temperature control system is intelligent. The measuring device has the advantages of being compact in structure, convenient to use, flexible, high in imaging quality, intelligent and the like, and is suitable for being widely used in the fields of machinery, construction, water conservancy, electrical equipment, aerospace, weapon industry, biomedicine and the like.

Description

Technical field: [0001] The invention relates to a laser speckle interferometry device and a measurement method for measuring the out-of-plane displacement of an object, in particular to a multifunctional intelligent temperature-variable and pressure-variable laser speckle interferometry device and method, which are suitable for use in machinery, civil engineering, water conservancy and electrical appliances. It is widely used in many fields such as aerospace, weapon industry and biomedicine. Background technique: [0002] Since the birth of the world's first ruby ​​laser in 1960, various laser technologies have developed extremely rapidly. The technology of measuring the mechanical and thermal properties of objects with laser speckle has been widely used due to its advantages of non-contact in the whole field, high sensitivity and simple structure. Applications. At present, there are reports at home and abroad about the properties of laser speckle measurement objects such ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of the existing technology, such as the low degree of intelligence and the limited scope of application, and to meet the actual needs, the present invention provides a solution: a multi-functional intelligent laser speckle interferometry device, including laser emission device, beam splitter, reflector, and an optical collimation system is also provided between the laser emitter and the beam splitter on the horizontal optical path formed by the laser emitter, beam splitter and reflector; On the optical path perpendicular to the optical path, a sample testing system is provided on the S1 surface facing the beam splitter, and the sample testing system is respectively connected with an eddy current heating system and a temperature display and control system; facing the S2 surface of the beam splitter, A CCD imaging system and a computer display system are arranged in sequence; among them:

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