High-pressure gas cylinder inner surface defect detection system based on machine vision

Abstract

The invention relates to the field of high-pressure gas cylinder on-line detection systems for industries such as fire protection, medical treatment and automobiles, in particular to a high-pressure gas cylinder inner surface defect on-line detection system based on machine vision. The problems that imaging is difficult due to the small radial size of the gas cylinder and area-array camera imagingdistortion is caused by the arc-shaped surface are solved. The system comprises an image acquisition unit, a control processing unit, a rotating unit, a triggering unit and a translation unit. The image acquisition unit is connected with the control processing unit, the control processing unit is respectively connected with the rotating unit and the translation unit, the rotating unit is connected with the triggering unit, the triggering unit is connected with the image acquisition unit, and the image acquisition unit is installed on the translation unit.

Description

technical field [0001] The invention relates to the field of on-line detection systems for high-pressure gas cylinders used in industries such as fire protection, medical treatment and automobiles, and in particular to an on-line detection system for inner surface defects of high-pressure gas cylinders based on machine vision. Background technique [0002] High-pressure gas cylinder is a kind of pressure-bearing equipment. The medium generally has inflammable, explosive, poisonous, strong corrosive, etc., and because of the characteristics of movement, repeated loading, unfixed operating personnel and changing use environment, it makes it There are major hidden dangers in terms of safety. Once the quality of gas cylinders is unqualified, it will cause a huge threat to people's lives and property. [0003] At present, the detection methods of high-pressure gas cylinders used by gas cylinder manufacturers, quality inspection departments and some research institutions include: ...

AI Technical Summary

Problems solved by technology

The limitation of this detection method is that the detection accuracy is limited by the emissivity and reflection distance, etc., and the safety protection of the operator always exists when the pulse heat source is used in practical applications.

[0007] Acoustic emission detection method, the disadvantage of this detection method is that it is difficult to adjust the coupling between the sensor and the measured object, and the measured object must be in a stress state. In addition, the acoustic emission detection equipment is expensive, and the training cost for the detection personnel is also relatively high

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