In-situ three-dimensional measurement system and method for inner cavity structure

A three-dimensional measurement, inner cavity technology, applied in the field of optical measurement, can solve the problems of reducing the sensitivity of measurement to environmental vibration, unable to improve measurement accessibility and efficiency, and achieve the effect of solving accessibility.

Active Publication Date: 2021-02-23
SHANGHAI TECH UNIV
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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a system and method for in-situ three-dimensional measurement of the inner cavity structure, which is used to solve the problem that the existing technology cannot improve the measurement reliability in the in-situ three-dimensional measurement of the inner cavity structure. Reachability and efficiency, and reduce measurement sensitivity to environmental vibrations

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  • In-situ three-dimensional measurement system and method for inner cavity structure
  • In-situ three-dimensional measurement system and method for inner cavity structure
  • In-situ three-dimensional measurement system and method for inner cavity structure

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Embodiment Construction

[0038] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...

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Abstract

The invention provides an in-situ three-dimensional measurement system and method for an inner cavity structure. The system comprises a collimation laser light source transmitting device which is usedfor transmitting parallel laser beams; an annular light generating device which is used for generating multiple paths of parallel annular light distributed along the optical axis at equal intervals according to the laser beams so as to generate multiple inner contour optical sections in a to-be-detected inner cavity structure at the same time; and an imaging device which is used for imaging the inner contour optical sections so as to realize three-dimensional measurement of the to-be-detected inner cavity structure. According to the invention, simultaneous scanning and measurement of a plurality of contour sections of an inner cavity structure are realized, and the problems of difficulty, accessibility, sensitivity to environmental vibration, low measurement efficiency and the like of in-situ measurement by conventional three-dimensional scanning equipment are solved.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and relates to a method for measuring an inner cavity structure, in particular to an in-situ three-dimensional measurement system and method for an inner cavity structure. Background technique [0002] At present, there are many kinds of defect detection in various lumen structures. In-situ detection of defects such as fatigue damage, corrosion and cracks in gas pipelines, underground sewage pipelines, various service equipment, such as hydropower, gas turbines, aero engines, artillery rifling, etc., is a key point. Solve the social problems, quickly and conveniently and in-situ to detect the inner contour of such pipelines, and keep abreast of critical dimensions, defect growth, etc., which is very helpful to prevent accidents. In addition, in the automotive industry, aviation industry, ordnance industry and other application fields, the inspection of complex internal contour featur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25G02B27/30
CPCG01B11/25G02B27/30
Inventor 王樾之谢广平翟梓融
Owner SHANGHAI TECH UNIV
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