Irregular particle three-dimensional shape measuring device and method based on speckle imaging

The device for measuring the three-dimensional morphology of irregular particles based on speckle imaging solves the problem of rapid and non-destructive measurement of the three-dimensional morphology of irregular particles in complex sand and dust environments, and achieves efficient acquisition of three-dimensional morphology and capture of key data. It is applicable to aero-engine erosion research and other fields.

CN121346697APending Publication Date: 2026-01-16XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202511930218.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve rapid, non-destructive measurement of the three-dimensional morphology of irregular particles in complex dust environments, and cannot obtain crucial impact test data, thus limiting the accurate simulation of aero-engine erosion research.

Method used

An irregular particle 3D morphology measurement device based on speckle imaging is adopted, including an irregular particle sand falling device, a laser sheet generation module, a multi-view image acquisition module, and a synchronous control system. Combined with a depth generation network, 3D reconstruction is performed to achieve non-destructive, rapid measurement and key data capture.

Benefits of technology

It achieves efficient acquisition of the three-dimensional morphology of irregular particles, is suitable for large-scale sample statistics, can capture the complex contours and surface details of irregular particles, and simultaneously acquire key impact data, making it applicable to aero-engine erosion research and other fields.

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Abstract

The invention discloses an irregular particle three-dimensional shape measurement device and method based on speckle imaging, and belongs to the field of irregular particle three-dimensional shape measurement, and the irregular particle three-dimensional shape measurement device comprises an irregular particle shakeout device which is used for enabling irregular particles to fall in a sparse free falling body form, and is used for forming lamellar laser vertical to the falling direction of the irregular particles, the laser sheet generating module is used for forming complete speckle distribution on the surfaces of the irregular particles; the laser sheet generating module is used for generating a laser sheet, the multi-view image collecting module is used for collecting speckle distribution on the surfaces of irregular particles in a multi-view mode and forming speckle images, the synchronous control system is used for controlling the laser sheet generating module and the multi-view image collecting module and synchronizing the time of the laser sheet generating module and the multi-view image collecting module, and the three-dimensional reconstruction processing unit is used for obtaining three-dimensional shape data of the irregular particles according to the speckle images. According to the invention, the irregular particles can be rapidly, non-destructively and in-situ measured so as to meet the requirements of aeroengine erosion research on the precision, efficiency and integrity of irregular particle data.
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