On-line fault detection system and method for fluoroplastic thin film

Abstract

The invention relates to a system and a method used for online detecting the defect of a fluoroplastic film, comprising a parallel image sensor device which consists of a plurality of high-resolution line array CCDs so as to obtain line array images, a control device used for the image sensor array, a control device of the line array CCD image sensor arrays is formed by a plurality of industrial control computers and touch screens and can achieve the synchronous control on a plurality of line array CCD cameras, an image transmission and processing device which is connected with the parallel image sensor device, consists of an industrial control local area network consisting of a plurality of industrial control computers and can achieve the parallel data transmission and data processing of a plurality of line array CCD sensors, and an illumination device which is suitable for the characteristics of the movable belt-shaped enwinding materials. The system and the method firstly apply the secondary differential of the pixel point match for the online detection of the fluoroplastic film, and avoid the measurement error caused by film motion. The system and the method can be widely applied to the industries such as avigation, electronics and electrics, chemical engineering, machines, building, textile, food, medical treatment and the like.

Description

technical field [0001] The invention relates to the field of linear image sensing technology and visual matching technology, in particular to an online quality detection system and method based on a linear image sensor array for detecting quality information of moving strip materials. Background technique [0002] Fluoroplastics are more and more widely used in industrial production due to their advantages of high temperature resistance, friction resistance, corrosion resistance, high strength and good insulation. Although compared with other general-purpose plastic materials, fluoroplastics are more expensive and relatively difficult to process, but due to their unique properties, they are indispensable materials for solving many key technologies in military and civilian fields and improving production technology levels, and have been widely used. It is widely used in aviation, aerospace, atomic energy, electronics, electrical, chemical, machinery, construction, textile, fo...

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Problems solved by technology

There are also some patents on fluoroplastic products, of which there are 6 related to tape-shaped winding materials, all of which are about its re-application, and related patents about its quality inspection have not yet been reported.

Patents related to defect detection only retrieved 200510110244 "An Objective Evaluation System for Automatic Cloth Inspection Grade" published by Donghua University in 2006. Its main function is to use DSP modules to realize automatic cloth inspection, and does not involve multi-line array CCD array image fusion and Key technologies for high-precision and high-speed detection such as control systems based on industrial control networks

In addition, in recent years, most of the algorithms for linear array CCD detection are based on grayscale, and no quadratic difference method of pixel point matching has been found for image processing of linear array CCD sensors. This method has the advantages of small amount of calculation and high precision. Features, especially suitable for online quality inspection of moving strip materials

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