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Multifunctional intelligent type laser speckle interference measuring device and method

A technology of laser speckle and interferometry, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of low intelligence and limited scope of application, achieve a wide range of applications, improve the accuracy of temperature measurement, The effect of eliminating spherical aberration

Active Publication Date: 2013-04-24
SHENYANG NORMAL UNIV
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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:

Method used

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  • Multifunctional intelligent type laser speckle interference measuring device and method
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  • Multifunctional intelligent type laser speckle interference measuring device and method

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Embodiment 1

[0066] An embodiment of the present invention is that a 0.6328um helium-neon laser irradiates a dime metal coin, and the temperature is respectively 20°C, 35°C, and 45°C, and the pressure scale is respectively 0, 5, and 10. The out-of-plane displacement is represented by △L, △L' and △L", respectively.

[0067] In the optical collimation system, the concave and convex surfaces of the negative concave-convex lens 1 and the double-convex lens 2 are coated with a 0.6328um anti-reflection film, and the material is ZF7;

[0068] The positive angle between the beam splitter and the horizontal optical path is 45°, the side close to the optical collimation system is coated with a 0.6328um transflective coating, and the side close to the total reflection mirror is coated with a 0.6328um anti-reflective coating;

[0069] The mirror is a flat mirror, and the side close to the optical path is coated with a 0.6328um high-reflection film;

[0070] In the sample testing system, the fixed pla...

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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 present invention relates to a laser speckle interferometry device for measuring the displacement of an object from the plane and its measurement method, in particular to a multifunctional intelligent variable temperature and variable pressure laser speckle interferometry device and method, which are suitable for use in machinery, civil engineering, water conservancy, electrical appliances , aerospace, weapons industry and biomedicine and many other fields are widely used. 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 full-field non-contact, high sensitivity, and simple structure. Applications. At present, there are reports at home and abroad on the properties of laser speckle measurement objects such as...

Claims

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Application Information

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IPC IPC(8): G01B11/02
Inventor 陈秀艳邓玉福李鑫齐维毅孙雪姜宏杨德龙李银李光汉
Owner SHENYANG NORMAL UNIV
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