With the rapid development of society, the future intelligent will be the development direction of manufacturing automation. With the deepening of manufacturing in China, the industrial intelligent robot industry market will show explosive growth, in which, the role of industrial robot "golden eye" is indispensable.
Make manufacturing intelligent
Machine vision is to use machine instead of human eyes to measure and judge. It is not only limited to taking images by computer, but also includes processing and judging information, so as to realize the extension of human vision.
As a branch of machine vision, industrial vision pays more attention to the application of generalized image signal (laser, camera) and automatic control (production line), which has the characteristics of automation and non-contact.
Compared with human eyes, industrial vision has obvious advantages in accuracy, objectivity, repeatability, cost and efficiency.
In the intelligent manufacturing system, the application of machine vision can be summarized into four directions
1、 Dimension measurement
With the continuous improvement of manufacturing technology, the shape design of industrial products, especially large components, is becoming more and more complex. At the same time, due to the volume and weight limitations of large components, it is not easy to move frequently, which brings great trouble to the traditional measurement methods.
Machine vision measurement technology is a non-contact measurement method based on optical imaging, digital image processing and computer graphics. It has a rigorous theoretical basis, wider measurement range, and has higher measurement accuracy and efficiency than the traditional measurement methods.
2、 Object positioning
In the process of industrial robot operation, the initial state of parts and the relative position of robot are not fixed. As a result, there is a gap between the actual position of the workpiece and the ideal processing position, and it is difficult for the robot to process according to the original program.
With the emergence of machine vision technology and more flexible robot arm, this problem has been well solved, which provides power for the rapid development of intelligent manufacturing.
3、 Parts inspection
Part inspection is one of the most important applications of machine vision technology in industrial production. In the process of manufacturing, almost all products are faced with quality inspection.
There are many shortcomings in traditional manual inspection: firstly, the accuracy of manual detection depends on the status and proficiency of workers; secondly, the efficiency of manual operation is relatively low, which can not meet the requirements of mass production inspection; in recent years, the labor cost is also gradually rising.
Therefore, machine vision technology is widely used in product detection. In the manufacturing process, the missing of some steps or processing defects will lead to the loss of parts, as well as holes, stains, scratches and other common surface defects. These problems in industrial production can be solved by visual inspection and algorithm.
4、 Image recognition
In the industrial field, the main applications are bar code reading, two-dimensional code scanning recognition, etc. in the past, NFC tags and other carriers were used for information reading, which required close contact with products.
With the upgrading of industrial cameras and other hardware equipment, the identification such as QR code can be read and recognized from a long distance, and the information carried is more abundant. All product information can be written into the QR code, without the need for online query information.
Zoom camera captures bar code image and other visual information to control product quality.
The demand of intelligent manufacturing is great, and the technology market is developing at the same time
It can be predicted that with the in-depth integration of machine vision and robot, visual robot will occupy an important position in the field of intelligent equipment in the next decade.
At present, China's machine vision industry is in a rapid development stage, which is one of the most active regions in the world.
Thanks to the continuous improvement of supporting infrastructure, the continuous expansion of the overall scale of the manufacturing industry, the continuous improvement of intelligent level and favorable policies, China's machine vision market demand is growing.
According to the data, the scale of China's machine vision market exceeded 10 billion yuan for the first time in 2018. With the improvement of industry technology and wider application fields of products, the machine vision market will further expand in the future. It is estimated that the market size will be nearly 12.5 billion yuan in 2019.
With the advantages of industrial vision in accuracy and repeatability and the continuous improvement of core technology, the downstream application fields of industrial vision are also expanding
In the automotive industry, almost all systems and parts manufacturing processes are profitable;
In the medical device and pharmaceutical industry, the high requirements of product quality also need the participation of machine vision;
In the field of food and beverage, machine vision can help enterprises quickly realize the accurate detection of products, keep up with the speed of production lines, reduce costs and improve efficiency
Intelligent manufacturing is inseparable from machine vision. The automatic detection equipment with "eyes" will provide higher quality and reliable cost and quality assurance for the manufacturing industry in the new era.
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