A quality inspection method and system for hand grenades based on visual recognition

Abstract

The invention discloses a grenade quality detection method and system based on visual recognition. The three-dimensional model of the projectile body of the grenade is reconstructed in the computer through three-dimensional scanning, and the engraved groove formed by each groove line is quickly calculated according to the three-dimensional model of the projectile body. The center of gravity on the circumscribed circle of the groove surface is used to calculate the error angle between its tangent vector and the circumscribed circle tangent vector; when the number of unqualified detection areas in the projectile detection area of ​​all grenades exceeds the tolerance threshold, the grenade is marked The projectile is a substandard product, otherwise it is a qualified product, so that the products with a large error angle are screened out, and the products with a small error angle are screened out to help improve the stability of the projectile structure and reduce the unevenness of the projectile body and the uneven thickness of the projectile. The product leads to the risk of being unqualified and reduces the probability of projectile instability. The invention is applied to the detection of grenade projectile products.

Description

technical field [0001] The invention relates to the technical fields of military equipment production and machine vision, in particular to a visual recognition-based grenade quality detection method and system. Background technique [0002] The early grenades were equipped with steel sleeves outside. After detonation, the explosive force of the internal explosives shattered the steel sleeves to form fragments, resulting in a killing range. The fragments formed by this type of grenade are of different sizes, and their power and safety are not good. ; so the improved type in the later stage is to prefabricate grooves on the outside of the steel sleeve and improve it into a steel plate prefabricated groove body. The fragmentation of the body obtained uniform fragments, that is, prefabricated fragments, which greatly increased the power of the grenade, but the fragments of these grenades were limited, and the number produced was small, and the power was extremely limited. [00...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a visual recognition-based grenade quality detection method and system to solve one or more technical problems in the prior art, at least provide a beneficial option or create conditions

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