Machine vision based micro-sound film concentricity online testing system and testing method

Abstract

The invention relates to a testing method of a machine vision based micro-sound film concentricity online testing system. The machine vision based micro-sound film concentricity online testing system comprises an optical imaging subsystem, a digital image processing subsystem, a motion control subsystem, a sound film eliminating subsystem, an image capture card and a motion control card, wherein signals of the optical imaging subsystem are sent to the image capture card through an interface, and the image capture card captures a frame of sound film gray scale image data and sends the data to the digital image processing subsystem to be processed and judged; a signal output end of the digital image processing subsystem is connected with a signal input end of the motion control card, and a signal port of the motion control card is respectively connected with the motion control subsystem and the sound film eliminating subsystem; and the motion control subsystem and the sound film eliminating subsystem are intensively controlled by the motion control card. The machine vision based micro-sound film concentricity online testing system realizes the precise positioning of sound films and the elimination of unqualified sound films by the motion control card controlling a stepper motor, a servo motor, a sensor, an eliminating device and the like, thereby realizing the high-precision online real-time testing of the sound films.

Description

technical field [0001] The invention is an on-line detection system and detection method for the concentricity of a miniature sound film based on machine vision, which belongs to the innovative technology of the on-line detection system and detection method for the concentricity of a miniature sound film based on machine vision. Background technique [0002] As a global electro-acoustic device production and processing center and a major exporter, my country has become able to independently develop and master all production technologies from electro-acoustic device components to finished products, forming an electro-acoustic device production industrial system and a complete industrial chain. In recent years, while the demand for electro-acoustic devices has been increasing, their performance has been continuously optimized, and new types of electro-acoustic devices (NXT, digital, silicon integration, etc.) have emerged in an endless stream. Miniaturization, thinning, high-f...

AI Technical Summary

Problems solved by technology

This detection method is high in cost, low in efficiency, and labor-intensive

The way of manual labor has seriously affected the work efficiency of sound film detection, which not only wastes labor resources, increases the cost of detection, but also cannot fundamentally guarantee the quality of sound film detection

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