The real realization of industrial automation requires highly intelligent industrial robots to replace part of human work. Obviously, if intelligent robots are to be a good substitute for human work, the first thing to do is to allow them to “see”. When industrial robots have the ability to observe things, they can judge things very well, so that they can solve some problems intelligently and flexibly.
Therefore, automatic vision inspection machine that can replace the human eye for measurement and judgment is naturally very important. The automatic vision inspection machine can convert the captured target into an image signal through an image pickup device, and send it to a dedicated image processing system. The morphological information of the target is converted into digitized signals based on pixel distribution, brightness, color and other information, and then the image system performs various operations on these signals to extract the characteristics of the target, and then controls the operation of the equipment on the spot according to the results of the discrimination.
With the development of modern industrial automation, automatic vision inspection machine is widely used in various inspections, measurements and parts identification, such as infrared cut-off filter surface defect detection, automobile wheel model identification, magnetic material appearance defect detection, product packaging. The common characteristics of this type of applications, such as barcodes and character recognition, are continuous mass production and very high requirements for appearance quality.
Usually this kind of highly repeatable and intelligent work can only be done by manual inspection. We often see hundreds or even more than a thousand inspection workers performing this process behind the modern assembly lines of some factories. While the factory increases huge labor costs and management costs, it still cannot guarantee a 100% inspection pass rate. With its automatic, objective, non-contact and high-precision features, automatic vision inspection machine can completely replace manual inspection of these single, repetitive procedures. Compared with general image processing systems, machine vision inspection systems emphasize accuracy and speed, as well as reliability in industrial field environments.
With the improvement of economic level, more and more attention is paid to machine vision inspection. It can improve the production capacity of qualified products and scrap low-quality products early in the production process, thereby reducing waste and saving costs. However, the application of visual technology in China began in the 1990s, because the industry itself is an emerging field, coupled with the lack of popularization of automatic vision inspection machine technology, it is also a trend of future development and growth.
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