Why does industrial automation need machine vision?

　　Machine vision technology is becoming more and more mature, and everyone has heard about industrial automation. But, do you really understand machine vision? Why use machine vision in industrial automation?

　　The so-called machine vision refers to the use of machines instead of human eyes for measurement and judgment. The machine vision system refers to converting the ingested target into an image signal through machine vision products, sending it to a dedicated image processing system, and converting it into a digital signal according to pixel distribution, brightness, color and other information; the image system performs various operations on these signals To extract the characteristics of the target, and then control the on-site equipment action according to the result of the discrimination.

　　Why use a machine vision system? There are five main reasons for using a machine vision system in industrial automation:

　　Accuracy: Since the human eye is limited by physical conditions, machines have obvious advantages in terms of accuracy. Even if the human eye relies on a magnifying glass or a microscope to inspect a product, a machine is still more precise because it is capable of accuracy to the thousandth of an inch.

　　Repeatability: The machine can complete the detection work one by one in the same way without getting tired. In contrast, the human eye detects a product subtly differently every time, even if the product is identical.

　　Speed: The machine can inspect products faster. Especially when detecting high-speed moving objects, such as on a production line, the machine can increase production efficiency.

　　Objectivity: There is another fatal flaw in human eye detection, which is the subjectivity brought about by emotions. The detection results will change according to the mood of the workers. However, the machine has no emotions, and the detection results are naturally very impressive and reliable.

　　Cost: Since machines are faster than humans, one automatic inspection machine can undertake the tasks of several people. Moreover, the machine does not need to stop, will not get sick, and can work continuously, so it can greatly improve production efficiency.

　　Because the machine vision system can quickly obtain a large amount of information, and it is easy to automatically process and integrate with design information and processing control information. Therefore, in the modern automated production process, people use the machine vision system widely for working condition monitoring and finished product inspection. and quality control areas.

　　Machine vision is used to replace artificial vision; at the same time, in the process of mass industrial production, the efficiency and accuracy of using artificial vision to detect product quality is low, and the feature of machine vision system is to improve the flexibility and automation of production. In some dangerous working environments that are not suitable for manual work or where artificial vision is difficult to meet the requirements, the use of machine vision inspection methods can greatly improve production efficiency and production automation. Moreover, machine vision is easy to realize information integration, and it is the basic technology to realize computer integrated manufacturing.