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Three-dimensional reconstruction based explosive fluidity measuring method

A measurement method and three-dimensional reconstruction technology, which is applied in the directions of measuring devices, 3D image processing, image data processing, etc., can solve the problem of inability to specifically or quantitatively determine the fluidity, affect the production efficiency of the explosive charging process, and affect the efficiency of the packaging process, etc. problem, to achieve fast calculation speed, intuitive measurement results, and speed-up effects

Inactive Publication Date: 2009-11-04
CHANGAN UNIV +1
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Problems solved by technology

Not only that, the fluidity also affects the production efficiency of the charging process in the explosives production process, which in turn affects the efficiency of the packaging process
[0003] For a long time, pyrotechnic professionals have evaluated the fluidity of explosives only by simply distinguishing good from bad based on experience, or by measuring the angle of repose to determine whether the fluidity of explosives is good or bad, so it is impossible to specifically or quantitatively determine the index of fluidity

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  • Three-dimensional reconstruction based explosive fluidity measuring method
  • Three-dimensional reconstruction based explosive fluidity measuring method

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] The main task of the invention is to provide a data analysis and processing method for the explosive fluidity measuring device by means of software, and finally obtain the fluidity characteristic of the explosive. It can be seen that the explosive dynamic data obtained by the explosive fluidity measuring device is the basis and processing object of the present invention. As mentioned in the background art, an important function of the explosive fluidity measuring device is to simulate the drug delivery process of the step-by-step press-packing process, and obtain relevant explosive dynamic data during the simulated drug delivery process through corresponding measures. For this reason, in addition to the step-by-step press-fit simulation unit and computer control unit that can simulate the step-by-step press-fit process, the ex...

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Abstract

The invention discloses a three-dimensional reconstruction based explosive fluidity measuring method, which comprises the following main operation steps: acquiring explosive frame image data shot by three cameras and explosive dynamic mass data weighted by an electronic balance in an explosive fluidity measuring device in real time and synchronously; and performing treatment such as filtering, feature value extraction, stereo matching, 3D reconstruction by a voxel method in sequence on three images in a frame of image at a manually selected sampling moment, obtaining an instantaneous density value of explosive falling into a standard transparent cup at a corresponding moment, performing the treatment on frame images at different moments, obtaining a group of explosive instantaneous density values changing with time, and drawing an explosive fluidity curve according to the group of explosive instantaneous density values. The method makes the explosive fluidity measuring device really realize automatic and objective measurement function on the explosive fluidity, and has the remarkable advantages of strong real-time, quick calculation speed, intuitive measuring results and high precision.

Description

technical field [0001] The invention belongs to the technical field of explosives, and mainly relates to a method for measuring the performance of explosives, in particular to a method for measuring the fluidity of explosives based on three-dimensional reconstruction. Background technique [0002] Fluidity is one of the important physical properties of explosives. Only when the explosive has good fluidity can it be ensured that it can be smoothly pressed into the shell by the press machine. If the fluidity of the explosive is not good, it will not only be difficult to charge the explosive, but also the adhesion to the mold will cause detonation and inaccurate dosage. Therefore, the fluidity of explosives and their mixtures directly affects the production safety and ignition reliability of pyrotechnics. Not only that, the fluidity also affects the production efficiency of the charging process in the explosives production process, which in turn affects the efficiency of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84G06T7/00G06T15/00G06T7/30
Inventor 汪贵平赵省向韩毅王淑萍赵彩霞余志华
Owner CHANGAN UNIV
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