Three-dimensional deformation wireless optical measurement system for engineering structure and measurement method thereof

An optical measurement system and engineering structure technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems that moving objects cannot be photographed, the effectiveness of optical measurement cannot be guaranteed, and flashlights cannot be used, so as to facilitate on-site engineering testing , not easy to carry, avoid the effect of on-site wiring

Inactive Publication Date: 2011-09-07
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0003] The problem to be solved by the present invention is: the measurement of engineering structure and material deformation in the field of optical measurement mechanics is slow, and the moving objects cannot be photographed, and the flashlight cannot be used, so the effectiven...

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  • Three-dimensional deformation wireless optical measurement system for engineering structure and measurement method thereof
  • Three-dimensional deformation wireless optical measurement system for engineering structure and measurement method thereof
  • Three-dimensional deformation wireless optical measurement system for engineering structure and measurement method thereof

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Embodiment Construction

[0029] 1. Implementation of the measurement system

[0030] The information carrier for measuring the amount of deformation is the feature points prepared on the surface to be measured, combined with figure 1 Describe the system implementation of engineering structure (material) deformation measurement process. Such as figure 1 , the system of the present invention comprises a light source 2, three wireless image transmitters 3 and a wireless image receiver 4, the light source 2 irradiates the deformation position 1 of the engineering structure to be measured, and a three-dimensional coordinate system is established centering on the deformation position 1 of the engineering structure, three The wireless image sending end 3 is respectively fixed on the x, y, and z axes of the three-dimensional coordinate system. The wireless image sending end 3 acquires the image of the deformation position 1 of the engineering structure to be measured, and sends it to the wireless image recei...

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Abstract

The invention relates to a three-dimensional deformation wireless optical measurement system for an engineering structure and a measurement method thereof. The system comprises a light source, three wireless image transmitting ends and a wireless image receiving end, wherein the light source irradiates a deformation position to be measured on an engineering structure; a three-dimensional coordinate system is established by taking the deformation position to be measured on the engineering structure as a center; the three wireless image transmitting ends are respectively fixed on axes x, y and z of the three-dimensional coordinate and used for acquiring images of the deformation position to be measured on the engineering structure and transmitting the image to the wireless image receiving end in a wireless way on the basis of ZigBee protocol. In the invention, the deformation position to be measured on the engineering structure is determined on the surface of an engineering structure to be measured, the wireless image transmitting ends are used for acquiring images of the deformation position to be measured before and after deformation and at different times and forming a data file; since the wireless image receiving end calculates deformation by using a sub-pixel displacement measurement algorithm and sends calculation results remotely. The system has the advantages of simple structure, good adaptability and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of deformation measurement of engineering structures, is used for measuring deformation of engineering structures and materials in the field of optical mechanics, and is a wireless optical measurement system for three-dimensional deformation of engineering structures and a measurement method thereof. Background technique [0002] The deformation of the structure or material surface under the action of some reason may be encountered in many engineering fields. In recent years, optical testing technology based on digital image analysis has developed rapidly, such as laser interferometry, digital holography, speckle interferometry, grid line projection technology, etc. Generally, the CCD camera is used to obtain the images of the feature points before and after the deformation of the object or at different deformation moments, and the captured video signal is transmitted to the control computer and forms a data...

Claims

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Application Information

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IPC IPC(8): G01B11/16
Inventor 吴明赞康新
Owner NANJING UNIV OF SCI & TECH
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